Genetic network and breeding patterns of a sicklefin lemon shark (Negaprion acutidens) population in the Society Islands, French Polynesia

Johann Mourier*, Nicolas Buray, Jennifer K. Schultz, Eric Clua, Serge Planes

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)
8 Downloads (Pure)

Abstract

Human pressures have put many top predator populations at risk of extinction. Recent years have seen alarming declines in sharks worldwide, while their resilience remains poorly understood. Studying the ecology of small populations of marine predators is a priority to better understand their ability to withstand anthropogenic and environmental stressors. In the present study, we monitored a naturally small island population of 40 adult sicklefin lemon sharks in Moorea, French Polynesia over 5 years. We reconstructed the genetic relationships among individuals and determined the population's mating system. The genetic network illustrates that all individuals, except one, are interconnected at least through one first order genetic relationship. While this species developed a clear inbreeding avoidance strategy involving dispersal and migration, the small population size, low number of breeders, and the fragmented environment characterizing these tropical islands, limits its complete effectiveness.

Original languageEnglish
Article numbere73899
Pages (from-to)1-11
Number of pages11
JournalPLoS ONE
Volume8
Issue number8
DOIs
Publication statusPublished - 13 Aug 2013

Bibliographical note

Copyright the Author(s) 2013. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Fingerprint

Dive into the research topics of 'Genetic network and breeding patterns of a sicklefin lemon shark (Negaprion acutidens) population in the Society Islands, French Polynesia'. Together they form a unique fingerprint.

Cite this