INVESTIGADORES
FLORES veronica Roxana
artículos
Título:
Catatropis hatcheri n. sp. (Digenea: Notocotylidae) from Heleobia hatcheri (Prosobranchia: Hydroobiidae) and notes on its life-cycle in Patagonia, Argentina.
Autor/es:
FLORES, V. R.; BRUGNI, N.
Revista:
SYSTEMATIC PARASITOLOGY
Editorial:
Kluwer Academic Publisher
Referencias:
Lugar: London; Año: 2006 vol. 63 p. 111 - 118
ISSN:
0165-5752
Resumen:
A new species of Catatropis Oghner, 1905 from a freshwater Neotropical prosobranch snail, Heleobia
hatcheri (Hydrobiidae), is described. Naturally infected snails were collected from Nahuel Huapý´ Lake in
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
hatcheri (Hydrobiidae), is described. Naturally infected snails were collected from Nahuel Huapý´ Lake in
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
hatcheri (Hydrobiidae), is described. Naturally infected snails were collected from Nahuel Huapý´ Lake in
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
hatcheri (Hydrobiidae), is described. Naturally infected snails were collected from Nahuel Huapý´ Lake in
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
Catatropis Oghner, 1905 from a freshwater Neotropical prosobranch snail, Heleobia
hatcheri (Hydrobiidae), is described. Naturally infected snails were collected from Nahuel Huapý´ Lake in
Andean Patagonia. The characteristics of the larval stages are also presented. Experimental adults were
recovered from the distal region of the intestinal caeca of chicks and ducklings and natural adults from a
wild duck Anas platyrhynchos. Adults of Catatropis hatcheri n. sp. can be distinguished from all other
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline
field of 1,2581,544 (1,396), vitelline follicles reach back to the anterior border of the testes with some
follicles extending slightly lateral to them, only external testicular margin lobed and genital pore in median
line just posterior to the intestinal bifurcation. In addition, the eggs have one filament on each pole, the
rediae contain one or two mature cercariae, and the cercariae are tri-oculate, with a long tail and encyst in
the environment.
species of the genus in having 1012 (11) ventral glands in each lateral row, the cirrus-sac extending back to
between the first third and the middle of the body, the metraterm shorter than the cirrus-sac, a previtelline