First genealogy for a wild marine fish population reveals multigenerational philopatry

Salles, Océane C., Pujol, Benoit, Maynard, Jeffrey A., Almany, Glenn R., Berumen, Michael L., Jones, Geoffrey P., Saenz-agudelo, Pablo, Srinivasan, Maya, Thorrold, Simon R., and Planes, Serge (2016) First genealogy for a wild marine fish population reveals multigenerational philopatry. Proceedings of the National Academy of Sciences of the United States of America, 113 (46). pp. 13245-13250.

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Abstract

Natal philopatry, the return of individuals to their natal area for reproduction, has advantages and disadvantages for animal populations. Natal philopatry may generate local genetic adaptation, but it may also increase the probability of inbreeding that can compromise persistence. Although natal philopatry is well documented in anadromous fishes, marine fish may also return to their birth site to spawn. How philopatry shapes wild fish populations is, however, unclear because it requires constructing multigenerational pedigrees that are currently lacking for marine fishes. Here we present the first multigenerational pedigree for a marine fish population by repeatedly genotyping all individuals in a population of the orange clownfish (Amphiprion percula) at Kimbe Island (Papua New Guinea) during a 10-y period. Based on 2927 individuals, our pedigree analysis revealed that longitudinal philopatry was recurrent over five generations. Progeny tended to settle close to their parents, with related individuals often sharing the same colony. However, successful inbreeding was rare, and genetic diversity remained high, suggesting occasional inbreeding does not impair local population persistence. Local reproductive success was dependent on the habitat larvae settled into, rather than the habitat they came from. Our study suggests that longitudinal philopatry can influence both population replenishment and local adaptation of marine fishes. Resolving multigenerational pedigrees during a relatively short period, as we present here, provides a framework for assessing the ability of marine populations to persist and adapt to accelerating climate change.

Item ID: 47088
Item Type: Article (Refereed Research - C1)
Keywords: Amphiprion percula, self-recruitment, multigenerational pedigree, inbreeding, parental effects
ISSN: 1091-6490
Funders: Laboratoire d 'Excellence, CORAIL, Coral Reef Initiatives for the Pacific, Global Environment Facility (GEF), National Science Foundation, ARC Centre of Excellence for Coral Reef Studies, Nature Conservancy, Total Foundation, James Cook University, King Abdullah University of Science and Technology (KAUST), Woods Hole Oceanographic Institution
Date Deposited: 11 Jan 2017 07:37
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 100%
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