INVESTIGADORES
CREMONTE Florencia
artículos
Título:
Steganoderma (Steganoderma) valchetensis n. sp. (Digenea: Zoogonidae) from the relict fish Gymnocharacinus bergi (Osteichthyes: Characidae) in Argentina
Autor/es:
A ETCHEGOIN, JORGE; FLORENCIA CREMONTE; ESCALANTE, ALICIA H
Revista:
SYSTEMATIC PARASITOLOGY
Editorial:
SPRINGER
Referencias:
Año: 2002 vol. 51 p. 149 - 153
ISSN:
0165-5752
Resumen:
A new species of Steganoderma (Steganoderma) (Digenea: Zoogonidae) was found in the digestive tract of the southernmost distributed, endemic and scale-less characid, Gymnocharacinus bergi, inhabiting thermal headwaters of the Valcheta Creek in northern Patagonia, Argentina. Steganoderma valchetensis n. sp. is included in the subgenus Steganoderma because of having a sessile ventral sucker and caeca reaching to testes. This new species can be distinguished from other species of this genus on the basis of body length, sucker ratio, length of cirrus sac, morphology of seminal vesicle and gonads, and location of vitelline follicles and genital pore. Taxonomic status of species of the genus Steganoderma parasitising freshwater fishes from Patagonia, in southern Argentina and Chile, is also discussed.
