Patterns and persistence of larval retention and connectivity in a marine fish metapopulation

Handle URI:
http://hdl.handle.net/10754/566011
Title:
Patterns and persistence of larval retention and connectivity in a marine fish metapopulation
Authors:
Saenz Agudelo, Pablo; Jones, Geoffrey P.; Thorrold, Simon R.; Planes, Serge
Abstract:
Connectivity, the demographic linking of local populations through the dispersal of individuals, is one of the most poorly understood processes in population dynamics, yet has profound implications for conservation and harvest strategies. For marine species with pelagic larvae, direct estimation of connectivity remains logistically challenging and has mostly been limited to single snapshots in time. Here, we document seasonal and interannual patterns of larval dispersal in a metapopulation of the coral reef fish Amphiprion polymnus. A 3-year record of larval trajectories within and among nine discrete local populations from an area of approximately 35 km was established by determining the natal origin of settled juveniles through DNA parentage analysis. We found that spatial patterns of both self-recruitment and connectivity were remarkably consistent over time, with a low level of self-recruitment at the scale of individual sites. Connectivity among sites was common and multidirectional in all years and was not significantly influenced by seasonal variability of predominant surface current directions. However, approximately 75% of the sampled juveniles could not be assigned to parents within the study area, indicating high levels of immigrations from sources outside the study area. The data support predictions that the magnitude and temporal stability of larval connectivity decreases significantly with increasing distance between subpopulations, but increases with the size of subpopulations. Given the considerable effort needed to directly measure larval exchange, the consistent patterns suggest snapshot parentage analyses can provide useful dispersal estimates to inform spatial management decisions. © 2012 Blackwell Publishing Ltd.
KAUST Department:
Red Sea Research Center (RSRC)
Publisher:
Wiley-Blackwell
Journal:
Molecular Ecology
Issue Date:
14-Aug-2012
DOI:
10.1111/j.1365-294X.2012.05726.x
PubMed ID:
22891716
Type:
Article
ISSN:
09621083
Sponsors:
We thank Chris McKelliget, Vanessa Messmer, Juan David Arango, Jennifer Smith, Agnes Rouchon and the Motupore Island Research Centre staff for assistance in the field. Nuria Raventos assisted with otolith analyses. The ARC Centre of Excellence for Coral Reef Studies, the National Science Foundation (OCE 0424688), the Coral Reef Initiatives for the Pacific (CRISP), the TOTAL Foundation, Populations Fractionees et Insulares (PPF EPHE) and the Connectivity Working Group of the global University of Queensland-World Bank-Global Environmental Facility project, Coral Reef Target Research and Capacity Building for Management provided financial support. Special thanks to Motupore Island Research Centre, Dik Knight and Loloata Island Resort for logistic support.
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorSaenz Agudelo, Pabloen
dc.contributor.authorJones, Geoffrey P.en
dc.contributor.authorThorrold, Simon R.en
dc.contributor.authorPlanes, Sergeen
dc.date.accessioned2015-08-12T08:59:19Zen
dc.date.available2015-08-12T08:59:19Zen
dc.date.issued2012-08-14en
dc.identifier.issn09621083en
dc.identifier.pmid22891716en
dc.identifier.doi10.1111/j.1365-294X.2012.05726.xen
dc.identifier.urihttp://hdl.handle.net/10754/566011en
dc.description.abstractConnectivity, the demographic linking of local populations through the dispersal of individuals, is one of the most poorly understood processes in population dynamics, yet has profound implications for conservation and harvest strategies. For marine species with pelagic larvae, direct estimation of connectivity remains logistically challenging and has mostly been limited to single snapshots in time. Here, we document seasonal and interannual patterns of larval dispersal in a metapopulation of the coral reef fish Amphiprion polymnus. A 3-year record of larval trajectories within and among nine discrete local populations from an area of approximately 35 km was established by determining the natal origin of settled juveniles through DNA parentage analysis. We found that spatial patterns of both self-recruitment and connectivity were remarkably consistent over time, with a low level of self-recruitment at the scale of individual sites. Connectivity among sites was common and multidirectional in all years and was not significantly influenced by seasonal variability of predominant surface current directions. However, approximately 75% of the sampled juveniles could not be assigned to parents within the study area, indicating high levels of immigrations from sources outside the study area. The data support predictions that the magnitude and temporal stability of larval connectivity decreases significantly with increasing distance between subpopulations, but increases with the size of subpopulations. Given the considerable effort needed to directly measure larval exchange, the consistent patterns suggest snapshot parentage analyses can provide useful dispersal estimates to inform spatial management decisions. © 2012 Blackwell Publishing Ltd.en
dc.description.sponsorshipWe thank Chris McKelliget, Vanessa Messmer, Juan David Arango, Jennifer Smith, Agnes Rouchon and the Motupore Island Research Centre staff for assistance in the field. Nuria Raventos assisted with otolith analyses. The ARC Centre of Excellence for Coral Reef Studies, the National Science Foundation (OCE 0424688), the Coral Reef Initiatives for the Pacific (CRISP), the TOTAL Foundation, Populations Fractionees et Insulares (PPF EPHE) and the Connectivity Working Group of the global University of Queensland-World Bank-Global Environmental Facility project, Coral Reef Target Research and Capacity Building for Management provided financial support. Special thanks to Motupore Island Research Centre, Dik Knight and Loloata Island Resort for logistic support.en
dc.publisherWiley-Blackwellen
dc.subjectAmphiprion polymnusen
dc.subjectconnectivityen
dc.subjectlarval dispersalen
dc.subjectmicrosatellitesen
dc.subjectparentage analysisen
dc.subjecttemporal seriesen
dc.titlePatterns and persistence of larval retention and connectivity in a marine fish metapopulationen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalMolecular Ecologyen
dc.relation.referencesSaenz-Agudelo, P., Jones, G. P., Thorrold, S. R., & Planes, S. (2012). Data from: Patterns and persistence of larval retention and connectivity in a marine fish metapopulation (Version 1) [Data set]. Dryad Digital Repository. https://doi.org/10.5061/dryad.cq700en
dc.relation.referencesDOI:10.5061/DRYAD.CQ700en
dc.relation.referencesHANDLE:http://hdl.handle.net/10754/624178en
kaust.authorSaenz Agudelo, Pabloen

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