Relación entre la temperatura de incubación y la asimetría del carapacho de neonatos de Lepidochelys olivacea incubados en el Área de Usos Múltiples Hawaii (AUMH), Santa Rosa, Guatemala.

María Renee  Contreras-Mérida; B. Alejandra  Morales-Mérida

doi:10.54495/Rev.Cientifica.v30i1.18

Authors

María Renee Contreras-Mérida Escuela de Biología, Facultad de Ciencias Químicas y Farmacia; Universidad de San Carlos de Guatemala
B. Alejandra Morales-Mérida Laboratoire Écologie, Systématique, Évolution, Université Paris-Sud, AgroParisTech, CNRS, Université Paris Saclay, France; Escuela de Biología, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, https://orcid.org/0000-0001-6724-9028

DOI:

https://doi.org/10.54495/Rev.Cientifica.v30i1.18

Keywords:

Sea Turtles, developmental instability, temperature, embryonic development, incubation

Abstract

Sea turtle embryos are susceptible to environmental disturbances, which result in abnormalities in their phenotype. One of the main parameters for measuring these disturbances is the asymmetry in the carapaces, which can be obtained through the Developmental Instability Index (DIx). Temperature plays an important role, influencing not only the future survival of hatchlings in extreme temperatures (high or low), but also specific attributes, such as sex determination, or it can even be the cause of the increase in the number of dermal appendages (shields) on the dorsal part of the carapace. This aimed to evaluate the relationship between incubation temperature and carapace asymmetry of Lepidochelys olivacea hatchlings incubated in relocated conditions in the Hawaii Multiple Use Area turtle rookery in Santa Rosa, Guatemala. To achieve this, the nesting conditions selected by the nesting females were replicated in relocated nests, using thermosensitive devices to measure the temperature during the incubation period. rough the calculation of DIx in 210 hatchlings, and using Kendall and Jockheere-Terpstra correlation tests, it was obtained that hatchlings present greater asymmetry in values of extreme temperatures, for both, high (Kendall: p<.05, tau = .232 ; JT p<.05, JT=2891) and low (Kendall: p<.05, tau= -.211 ; JT p<.05, JT=5005); as well as in high ranges of variation (Kendall: p<.05, tau= .231 ; JT p<.05, JT=6619), during the embryonic
development period.

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