title: Genetic network and breeding patterns of a sicklefin lemon shark (Negaprion acutidens) population in the Society Islands, French Polynesia.
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.
authors: LabEx CORAIL - USR 3278 CNRS-EPHE, Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE), Papetoai, Moorea, French Polynesia. johann.mourier@gmail.com
authors: Johann
authors: J
authors: Mourier
authors: Nicolas
authors: N
authors: Buray
authors: Jennifer K
authors: JK
authors: Schultz
authors: Eric
authors: E
authors: Clua
authors: Serge
authors: S
authors: Planes
mesh_terms: D000818:Animals; D001947:Breeding; D005260:Female; D053263:Gene Regulatory Networks; D005828:Genetics, Population; D007178:Inbreeding; D008297:Male; D018895:Microsatellite Repeats; D011110:Polymorphism, Genetic; D011114:Polynesia; D012098:Reproduction; D012726:Sexual Behavior, Animal; D012754:Sharks / Q000235:genetics*
references: Mol Ecol. 2008 Jul;17(14):3337-51
references: 18564083
references: Mol Ecol. 2009 Aug;18(16):3500-7
references: 19659480
references: Conserv Biol. 2012 Jun;26(3):493-503
references: 22536842
references: J Fish Biol. 2012 Apr;80(5):1844-69
references: 22497409
references: J Hered. 2011 Nov-Dec;102(6):643-52
references: 21926063
references: Mol Ecol. 2013 Feb;22(4):1158-70
references: 23278953
references: Mol Ecol. 1998 May;7(5):639-55
references: 9633105
references: J Fish Biol. 2013 Mar;82(3):979-93
references: 23464555
references: Bioinformatics. 2012 Oct 1;28(19):2537-9
references: 22820204
references: Proc Biol Sci. 2010 Sep 7;277(1694):2667-73
references: 20392729
references: Mol Ecol Resour. 2008 Nov;8(6):1263-6
references: 21586016
references: Science. 2003 Jan 17;299(5605):389-92
references: 12532016
references: Behav Ecol Sociobiol. 2007;62(1):15-27
references: 32214613
references: Trends Ecol Evol. 1996 May;11(5):201-6
references: 21237809
references: Adv Mar Biol. 2009;56:275-363
references: 19895977
references: Science. 2007 Mar 30;315(5820):1846-50
references: 17395829
references: Mol Ecol. 2012 Apr;21(7):1727-40
references: 22335253
references: PLoS One. 2013 Apr 09;8(4):e61067
references: 23585872
references: J Hered. 2011 Jan-Feb;102(1):88-93
references: 20650933
references: Mol Ecol. 2013 Jan;22(1):201-14
references: 23130666
references: Science. 2002 May 3;296(5569):904-7
references: 11988573
references: Proc Biol Sci. 2002 Aug 22;269(1501):1655-61
references: 12204125
references: Conserv Biol. 2013 Feb;27(1):197-209
references: 23110546
references: Evolution. 2004 Oct;58(10):2332-42
references: 15562694
references: Mol Ecol Resour. 2010 May;10(3):551-5
references: 21565056
references: Mol Ecol. 2012 Feb;21(3):562-71
references: 22145620
references: Mol Ecol. 2008 Feb;17(3):783-95
references: 18194167
references: Mol Ecol. 2008 Dec;17(24):5336-48
references: 19121001
references: Proc Biol Sci. 1999 Nov 22;266(1435):2261-7
references: 10629976
references: Curr Biol. 2006 Dec 5;16(23):2314-9
references: 17141612