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A roadmap for multiple paternity research with sea turtles.

Patricia L M Lee1, Graeme C Hays1

  • 1School of Life and Environmental Sciences, Deakin University, Geelong, VIC, Australia.

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|September 22, 2024
PubMed
Summary
This summary is machine-generated.

Multiple paternity is common in sea turtles, with up to ten fathers per clutch. Studies on multiple paternity may inform conservation efforts amid climate change concerns for male sea turtle production.

Keywords:
Conservation managementclimate changefeminisation of populationsmate encounter ratemultiple paternitypolyandrysex ratios

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Area of Science:

  • Marine Biology
  • Conservation Genetics
  • Reproductive Ecology

Background:

  • Multiple paternity, where a single clutch of eggs has offspring from multiple fathers, is well-documented across various animal taxa.
  • Sea turtles exhibit high rates of multiple paternity, with some populations showing over 90% of clutches sired by multiple males, reaching up to ten fathers per clutch.

Purpose of the Study:

  • To investigate the adaptive significance of multiple paternity in sea turtles.
  • To explore the potential role of multiple paternity studies in informing conservation strategies for sea turtle populations facing climate change-induced sex ratio biases.

Main Methods:

  • Review of existing literature on multiple paternity in sea turtles.
  • Analysis of how environmental factors, particularly climate warming, may influence multiple paternity rates and sea turtle sex ratios.

Main Results:

  • The adaptive significance of multiple paternity in sea turtles remains unclear, often overshadowed by environmental influences.
  • Climate warming poses a significant threat, potentially leading to feminization of sea turtle populations due to temperature-dependent sex determination.

Conclusions:

  • Multiple paternity studies are crucial for understanding sea turtle reproductive strategies.
  • Declining multiple paternity rates may signal a scarcity of breeding males, indicating a need for management intervention to ensure male hatchling production in warming climates.