Effect of nesting environment on incubation temperature and hatching success of Morelet's crocodile (Crocodylus moreletii) in an urban lake of Southeastern Mexico

Journal of Thermal Biology
Marco A López-LunaJudith A Rangel-Mendoza

Abstract

Incubation temperature is an important aspect in terms of biological performance among crocodiles, and several controlled experiments have demonstrated a significant relationship between incubation temperature, success in hatching and survival of hatchlings. However, a few studies have tested these relationships in the wild. The objective of this study was to determine the relationship of nest characteristics and environment (hatch year, nest basal area and height, clutch size, distance to shore line, and vegetation cover), to incubation temperature and hatching success among Morelet's crocodile (Crocodylus moreletii). The study was carried out during the nesting seasons of Morelet's crocodile, from 2007 to 2009 in the Laguna de Las Ilusiones, an urban lake located in Villahermosa, Tabasco, Mexico. We physically characterized 18 nests and inserted a temperature data logger in each nest chamber. At the end of the nesting season and prior to hatching, we recovered the crocodile eggs and data loggers and calculated hatching success, under laboratory conditions. We related the environmental variables of the nest with the mean and fluctuation (standard deviation) of nest temperature, using linear models. We also related the environm...Continue Reading

References

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Citations

Apr 30, 2019·Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology·Melina S SimonciniFelix B Cruz
Jul 10, 2019·The Journal of Animal Ecology·Edgar J GonzálezJosé Alberto Gallardo-Cruz
Feb 29, 2020·PeerJ·Stephanie K DrumhellerFrank J Mazzotti
Feb 28, 2021·Scientific Reports·Gaurav VashisthaDavid Kothamasi
Aug 24, 2021·Journal of Thermal Biology·René Barragán LaraEmilio Martínez Ramírez

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