Home / Content / The Impact of Temperature-Dependent Sex Determination on the Population Dynamics of Green Sea Turtles (Chelonia mydas)

The Impact of Temperature-Dependent Sex Determination on the Population Dynamics of Green Sea Turtles (Chelonia mydas)

Abstract:


The sex of the turtles is determined by the incubation temperature of the eggs during the mid-trimester of development. In Green sea turtles (Chelonia mydas), recent studies show that sex ratios are changing, producing a female-biased sex ratio within the population. We developed a novel continuous model to analyze the dynamics of the green sea turtle population long-term. We determine the safe operating space for the proportion of eggs that become male at which the population of Green sea turtle can exist without going to extinction. When the proportion of male eggs leaves this range the overall population of turtles collapses. Additionally, we examined how temperature changes affect the sex ratios of the Green sea turtle population.

 

Year: 2019

Authors

Candy Herrera - Yachay Tech University

Evelyn Guerra - California State Polytechnic University 

Victoria Penalver - University of Hawaii

Andrea Rosas - California State University, Fullerton

Yingying Wei - University of Shanghai for Science and Technology

Jack Pringle - Arizona State University 

Baltazar Espinoza - Arizona State University

Baojun Song - Montclair State University 

PDF icon turtle.pdf