INVESTIGADORES
GAMARRA LUQUES Carlos Diego
congresos y reuniones científicas
Título:
Putative symbiotic elements during post-hatching development of the midgut gland (MGG) in Pomacea canaliculata.
Autor/es:
KOCH E, VEGA IA, ALBRECHT EA, GAMARRA-LUQUES C, CASTRO-VÁZQUEZ A
Lugar:
San Luis
Reunión:
Congreso; XIX Reunión Anual de la Sociedad de Biología de Cuyo.; 2001
Institución organizadora:
Saciedad de Biología de Cuyo
Resumen:
Putative symbiotic elements during posthatching
development of the midgut gland
(MGG) in Pomacea canaliculata
Koch E, Vega IA, Albrecht EA, Gamarra-Luques C, Castro-Vazquez
A. Lab. of Physiology, IHEM, UNCuyo-CONICET, C. de Correo 33,
5500 Mendoza. E-mail: acv@fmed2.uncu.edu.aracv@fmed2.uncu.edu.ar
Koch E, Vega IA, Albrecht EA, Gamarra-Luques C, Castro-Vazquez
A. Lab. of Physiology, IHEM, UNCuyo-CONICET, C. de Correo 33,
5500 Mendoza. E-mail: acv@fmed2.uncu.edu.aracv@fmed2.uncu.edu.ar
Pomacea canaliculata
Koch E, Vega IA, Albrecht EA, Gamarra-Luques C, Castro-Vazquez
A. Lab. of Physiology, IHEM, UNCuyo-CONICET, C. de Correo 33,
5500 Mendoza. E-mail: acv@fmed2.uncu.edu.aracv@fmed2.uncu.edu.ar
Koch E, Vega IA, Albrecht EA, Gamarra-Luques C, Castro-Vazquez
A. Lab. of Physiology, IHEM, UNCuyo-CONICET, C. de Correo 33,
5500 Mendoza. E-mail: acv@fmed2.uncu.edu.aracv@fmed2.uncu.edu.ar
Several lines of evidence have suggested the
symbiotic nature of intracellular corpuscles in the
MGG of adult snails. Pre- and post-hatching
development of the MGG was studied in search of
the origin of these corpuscles. Before hatching, the
MGG originates as an albumen- filled pouch, lined
by a flattened unicellular epithelium. A layer of
columnar cells, intermingled with clear pyramidal
cells, eventually develops at one side of the pouch.
The columnar cells incorporate albumen globules
by endocytosis. Later, alveoli fo rmed by both cell
types develop at one side of the pouch, between the
epithelium lining the albumen core and the external,
flattened epithelium. Symbiotic type C corpuscles
can be already found within alveolar cylindrical
cells 3-5 days post-hatching.