Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery

Nathan K. Truelove; Stephen J. Box; Karl A. Aiken; A Blythe‐Mallett; Erik M. Boman; Catherine J. Booker; Tamsen T. Byfield; Courtney E. Cox; Martha H. Davis; Gabriel A. Delgado; Bob A. Glazer; Sarah M. Griffiths; K Kitson‐Walters; Andy S. Kough; Enríquez R Pérez; Richard F. Preziosi; Marcia E. Roy; I Segura‐García; Mona K. Webber; Allan W. Stoner

doi:10.1111/ddi.12626

Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery

Nathan K. Truelove^*, Stephen J. Box, Karl A. Aiken, A Blythe‐Mallett, Erik M. Boman, Catherine J. Booker, Tamsen T. Byfield, Courtney E. Cox, Martha H. Davis, Gabriel A. Delgado, Bob A. Glazer, Sarah M. Griffiths, K Kitson‐Walters, Andy S. Kough, Enríquez R Pérez, Richard F. Preziosi, Marcia E. Roy, I Segura‐García, Mona K. Webber, Allan W. Stoner

^*Corresponding author for this work

School of Biological and Marine Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

AbstractAimA detailed understanding of spatial genetic structure (SGS) and the factors driving contemporary patterns of gene flow and genetic diversity are fundamental for developing conservation and management plans for marine fisheries. We performed a detailed study of SGS and genetic diversity throughout the overharvested queen conch (Lobatus gigas) fishery. Caribbean countries were presented as major populations to examine transboundary patterns of population differentiation.LocationNineteen locations in the greater Caribbean from Anguilla, the Bahamas, Belize, Caribbean Netherlands, Honduras, Jamaica, Mexico, Turks and Caicos, and the USA.MethodsWe genotyped 643 individuals with nine microsatellites. Population genetic and multivariate analyses characterized SGS. We tested the alternate hypotheses: (1) SGS is randomly distributed in space or (2) pairwise genetic structure among sites is correlated with oceanic distance (IBOD).ResultsOur study found that L. gigas does not form a single panmictic population in the greater Caribbean. Significant levels of genetic differentiation were identified between Caribbean countries (FCT = 0.011; p = .0001), within Caribbean countries (FSC = 0.003; p = .001), and among sites irrespective of geographic location (FST = 0.013; p = .0001). Gene flow across the greater Caribbean was constrained by oceanic distance (p = .0009; Mantel r = .40), which acted to isolate local populations.Main conclusionsGene flow over the spatial scale of the entire Caribbean basin is constrained by oceanic distance, which may impede the natural recovery of overfished L. gigas populations. Our results suggest a careful blend of local and international management will be required to ensure long‐term sustainability for the species.

Original language	English
Pages (from-to)	1292-1300
Number of pages	0
Journal	Diversity and Distributions
Volume	23
Issue number	11
Early online date	18 Sept 2017
DOIs	https://doi.org/10.1111/ddi.12626
Publication status	Published - Nov 2017

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10.1111/ddi.12626

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Truelove, N. K., Box, S. J., Aiken, K. A., Blythe‐Mallett, A., Boman, E. M., Booker, C. J., Byfield, T. T., Cox, C. E., Davis, M. H., Delgado, G. A., Glazer, B. A., Griffiths, S. M., Kitson‐Walters, K., Kough, A. S., Pérez, E. R., Preziosi, R. F., Roy, M. E., Segura‐García, I., Webber, M. K., & Stoner, A. W. (2017). Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery. Diversity and Distributions, 23(11), 1292-1300. https://doi.org/10.1111/ddi.12626

@article{79d9d8d8e5a64470a031613638d02b7f,

title = "Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery",

abstract = "AbstractAimA detailed understanding of spatial genetic structure (SGS) and the factors driving contemporary patterns of gene flow and genetic diversity are fundamental for developing conservation and management plans for marine fisheries. We performed a detailed study of SGS and genetic diversity throughout the overharvested queen conch (Lobatus gigas) fishery. Caribbean countries were presented as major populations to examine transboundary patterns of population differentiation.LocationNineteen locations in the greater Caribbean from Anguilla, the Bahamas, Belize, Caribbean Netherlands, Honduras, Jamaica, Mexico, Turks and Caicos, and the USA.MethodsWe genotyped 643 individuals with nine microsatellites. Population genetic and multivariate analyses characterized SGS. We tested the alternate hypotheses: (1) SGS is randomly distributed in space or (2) pairwise genetic structure among sites is correlated with oceanic distance (IBOD).ResultsOur study found that L. gigas does not form a single panmictic population in the greater Caribbean. Significant levels of genetic differentiation were identified between Caribbean countries (FCT = 0.011; p = .0001), within Caribbean countries (FSC = 0.003; p = .001), and among sites irrespective of geographic location (FST = 0.013; p = .0001). Gene flow across the greater Caribbean was constrained by oceanic distance (p = .0009; Mantel r = .40), which acted to isolate local populations.Main conclusionsGene flow over the spatial scale of the entire Caribbean basin is constrained by oceanic distance, which may impede the natural recovery of overfished L. gigas populations. Our results suggest a careful blend of local and international management will be required to ensure long‐term sustainability for the species.",

author = "Truelove, {Nathan K.} and Box, {Stephen J.} and Aiken, {Karl A.} and A Blythe‐Mallett and Boman, {Erik M.} and Booker, {Catherine J.} and Byfield, {Tamsen T.} and Cox, {Courtney E.} and Davis, {Martha H.} and Delgado, {Gabriel A.} and Glazer, {Bob A.} and Griffiths, {Sarah M.} and K Kitson‐Walters and Kough, {Andy S.} and P{\'e}rez, {Enr{\'i}quez R} and Preziosi, {Richard F.} and Roy, {Marcia E.} and I Segura‐Garc{\'i}a and Webber, {Mona K.} and Stoner, {Allan W.}",

year = "2017",

month = nov,

doi = "10.1111/ddi.12626",

language = "English",

volume = "23",

pages = "1292--1300",

journal = "Diversity and Distributions",

issn = "1366-9516",

publisher = "Wiley-Blackwell Publishing Ltd",

number = "11",

}

Truelove, NK, Box, SJ, Aiken, KA, Blythe‐Mallett, A, Boman, EM, Booker, CJ, Byfield, TT, Cox, CE, Davis, MH, Delgado, GA, Glazer, BA, Griffiths, SM, Kitson‐Walters, K, Kough, AS, Pérez, ER, Preziosi, RF, Roy, ME, Segura‐García, I, Webber, MK & Stoner, AW 2017, 'Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery', Diversity and Distributions, vol. 23, no. 11, pp. 1292-1300. https://doi.org/10.1111/ddi.12626

TY - JOUR

T1 - Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery

AU - Truelove, Nathan K.

AU - Box, Stephen J.

AU - Aiken, Karl A.

AU - Blythe‐Mallett, A

AU - Boman, Erik M.

AU - Booker, Catherine J.

AU - Byfield, Tamsen T.

AU - Cox, Courtney E.

AU - Davis, Martha H.

AU - Delgado, Gabriel A.

AU - Glazer, Bob A.

AU - Griffiths, Sarah M.

AU - Kitson‐Walters, K

AU - Kough, Andy S.

AU - Pérez, Enríquez R

AU - Preziosi, Richard F.

AU - Roy, Marcia E.

AU - Segura‐García, I

AU - Webber, Mona K.

AU - Stoner, Allan W.

PY - 2017/11

Y1 - 2017/11

N2 - AbstractAimA detailed understanding of spatial genetic structure (SGS) and the factors driving contemporary patterns of gene flow and genetic diversity are fundamental for developing conservation and management plans for marine fisheries. We performed a detailed study of SGS and genetic diversity throughout the overharvested queen conch (Lobatus gigas) fishery. Caribbean countries were presented as major populations to examine transboundary patterns of population differentiation.LocationNineteen locations in the greater Caribbean from Anguilla, the Bahamas, Belize, Caribbean Netherlands, Honduras, Jamaica, Mexico, Turks and Caicos, and the USA.MethodsWe genotyped 643 individuals with nine microsatellites. Population genetic and multivariate analyses characterized SGS. We tested the alternate hypotheses: (1) SGS is randomly distributed in space or (2) pairwise genetic structure among sites is correlated with oceanic distance (IBOD).ResultsOur study found that L. gigas does not form a single panmictic population in the greater Caribbean. Significant levels of genetic differentiation were identified between Caribbean countries (FCT = 0.011; p = .0001), within Caribbean countries (FSC = 0.003; p = .001), and among sites irrespective of geographic location (FST = 0.013; p = .0001). Gene flow across the greater Caribbean was constrained by oceanic distance (p = .0009; Mantel r = .40), which acted to isolate local populations.Main conclusionsGene flow over the spatial scale of the entire Caribbean basin is constrained by oceanic distance, which may impede the natural recovery of overfished L. gigas populations. Our results suggest a careful blend of local and international management will be required to ensure long‐term sustainability for the species.

AB - AbstractAimA detailed understanding of spatial genetic structure (SGS) and the factors driving contemporary patterns of gene flow and genetic diversity are fundamental for developing conservation and management plans for marine fisheries. We performed a detailed study of SGS and genetic diversity throughout the overharvested queen conch (Lobatus gigas) fishery. Caribbean countries were presented as major populations to examine transboundary patterns of population differentiation.LocationNineteen locations in the greater Caribbean from Anguilla, the Bahamas, Belize, Caribbean Netherlands, Honduras, Jamaica, Mexico, Turks and Caicos, and the USA.MethodsWe genotyped 643 individuals with nine microsatellites. Population genetic and multivariate analyses characterized SGS. We tested the alternate hypotheses: (1) SGS is randomly distributed in space or (2) pairwise genetic structure among sites is correlated with oceanic distance (IBOD).ResultsOur study found that L. gigas does not form a single panmictic population in the greater Caribbean. Significant levels of genetic differentiation were identified between Caribbean countries (FCT = 0.011; p = .0001), within Caribbean countries (FSC = 0.003; p = .001), and among sites irrespective of geographic location (FST = 0.013; p = .0001). Gene flow across the greater Caribbean was constrained by oceanic distance (p = .0009; Mantel r = .40), which acted to isolate local populations.Main conclusionsGene flow over the spatial scale of the entire Caribbean basin is constrained by oceanic distance, which may impede the natural recovery of overfished L. gigas populations. Our results suggest a careful blend of local and international management will be required to ensure long‐term sustainability for the species.

U2 - 10.1111/ddi.12626

DO - 10.1111/ddi.12626

M3 - Article

SN - 1366-9516

VL - 23

SP - 1292

EP - 1300

JO - Diversity and Distributions

JF - Diversity and Distributions

IS - 11

ER -

Isolation by oceanic distance and spatial genetic structure in an overharvested international fishery

Abstract

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