INVESTIGADORES
PIÑA Carlos Ignacio
congresos y reuniones científicas
Título:
THE EFFECTS OF HYPOXIA ON OXYGEN CONSUMPTION OF BROAD-SNOUTED CAIMAN EGGS
Autor/es:
BONED, M.J. ; IUNGMAN, J.; IMHOF, 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