CICYTTP   12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
THE EFFECTS OF HYPOXIA ON OXYGEN CONSUMPTION OF BROAD-SNOUTED CAIMAN EGGS
Autor/es:
BONED, M.J. ; IUNGMAN, J.; IMHOH, A.; PIÑA, C.I.
Lugar:
Manaos
Reunión:
Congreso; 20th Working Meeting of the Crocodile Specialista Group (CSG/SSC/IUCN); 2010
Institución organizadora:
CSG/SSC/UICN
Resumen:
Embryonic
ability to tolerate hypoxia is oxygen- and temperature-dependent, and can be
assessed by measuring oxygen consumption. To investigate developmental
responses to hypoxia, we incubated Caiman latirostris
eggs at two different temperatures (31ºC, 100% female-producing temperature,
and 33ºC, 100% male-producing temperature) and at two O2 concentrations
(12% and 21%). Oxygen
consumption was measured at embryonic stages (22 and 24) incubated at 31°C and
33°C temperatures. Closed-respirometer
was used to measure the consumption oxygen. We found the same O2 consumption at
stage 22, but at stage 24 consumption at 33°C was higher than at 31C, also it
seems to be a lower consumption under hypoxia that at normal O2
level at this temperature. Absence of differences at 31°C in our results
support the hypothesis that hypoxia interacts with incubation temperature