Cultural inheritance as a mechanism for population sex-ratio bias in reptiles. Snover, W. Journal of Experimental Biology.
Methods of estimating natural temperature dependent sex determination ppt viewer in Newport News ratios of sea turtles from incubation temperatures and laboratory data. Consequently, long-term monitoring of nesting sites was recommended so that potential future changes to primary hatchling sex ratios could be measured [ 1920 ] and necessary mitigation measures implemented in a timely manner.
Harvey, Christine Janis, and John Heiser. However, considering the inherent intra- and inter-annual variation in hatchling sex ratios, the uncertainty associated with hatchling sex ratio estimation i. Mihnovets, M.
In the case of ectotherms, whose survival and reproduction are strongly dependent upon thermal conditions, climate change could have serious consequences.
Female-biased sex ratio of juvenile loggerhead sea turtles in Georgia. Sexual differentiation in hatchling loggerheads incubated at different controlled temperatures. The scope of the model for other reptiles, however, requires further research.
Environmental sex determination in reptiles: ecology, evolution, and experimental design. However, given other environmental factors that can influence incubation temperatures e. In this Page.
Supporting Information. Temperature dependent sex determination and climate change. Freedberg S, Wade MJ. The NMFS does not approve, recommend, or endorse any product or material mentioned in this publication. Sea turtle populations are currently imperiled due to a number of anthropogenic threats including habitat alteration and loss, pollution, and incidental capture in fisheries [ 59 ].
Although other environmental influences can have similar effects, temperature is the most wide-spread factor that alters aromatase activity and sex determination.