IMBECU   20882
INSTITUTO DE MEDICINA Y BIOLOGIA EXPERIMENTAL DE CUYO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Effect of extreme environmental conditions on corticosterone levels and immunological indices in juvenile broad-snouted caiman
Autor/es:
SIROSKI A; MARÍA V. PARACHÚ MARCÓ; PIETROBON E; GRACIELA A. JAHN; MOLEON S.
Lugar:
santa fe
Reunión:
Congreso; Working Meeting of the Crocodile Specialist Group (CSG/SSC/IUCN),; 2018
Institución organizadora:
universidad nacional del litoral
Resumen:
crocodilians. In the wild, crocodilians face numerous stressors such as climatic factors,toxicant exposure, and infection. Exposure to stressors may affect the physiologicalprocesses of crocodilians, with consequences on its fitness and survival. Weexperimentally investigated the effect of a 4-week exposure to environmental challenges(food restriction, water restriction and high temperature) on growth, immunologicalinvestment and corticosterone levels of juvenile Caiman latirostris. White blood cellscounts, natural antibody (NAb) levels and complement system activity were evaluatedto characterize the influence of those treatments on the immune system. We founddeprivation of food resulted in reduction in growth and body condition, whereas hightemperature had a beneficial effect on the variables measured. Individuals exposed toheat treatment (37 1°C) grew more, and obtained better body condition, higher NAblevels, and significantly lower corticosterone levels relative to caimans in all othergroups. Food restricted caimans also illustrated higher NAb levels. Our findings suggestthat C. latirostris juveniles are able to tolerate environmental stressors and they are evenfavored by high temperatures