Please use this identifier to cite or link to this item: https://doi.org/10.1371/journal.pone.0037976
Title: Evidence for female-biased dispersal in the protandrous hermaphroditic Asian seabass, Lates calcarifer
Authors: Yue G.H. 
Xia J.H.
Liu F. 
Lin G. 
Keywords: article
body size
DNA marker
female
genetic variability
genotype
hermaphroditic species
inbreeding
intraspecific competition
Lates calcarifer
male
mark recapture
mate choice
mating system
microsatellite marker
nonhuman
nucleotide sequence
Perciformes
population differentiation
population dispersal
population genetic structure
population movement pattern
sex difference
analysis of variance
animal
bass
demography
genetic variability
genetics
hermaphroditic species
physiology
population genetics
population migration
sea
Southeast Asia
microsatellite DNA
Analysis of Variance
Animal Migration
Animals
Asia, Southeastern
Bass
Body Size
Demography
Female
Genetic Variation
Genetics, Population
Genotype
Hermaphroditic Organisms
Male
Microsatellite Repeats
Oceans and Seas
Sex Factors
Issue Date: 2012
Publisher: Public Library of Science
Citation: Yue G.H., Xia J.H., Liu F., Lin G. (2012). Evidence for female-biased dispersal in the protandrous hermaphroditic Asian seabass, Lates calcarifer. PLoS ONE 7 (6) : e37976. ScholarBank@NUS Repository. https://doi.org/10.1371/journal.pone.0037976
Abstract: Movement of individuals influences individual reproductive success, fitness, genetic diversity and relationships among individuals within populations and gene exchange among populations. Competition between males or females for mating opportunities and/or local resources predicts a female bias in taxa with monogamous mating systems and a male-biased dispersal in polygynous species. In birds and mammals, the patterns of dispersal between sexes are well explored, while dispersal patterns in protandrous hermaphroditic fish species have not been studied. We collected 549 adult individuals of Asian seabass (Lates calcarifer) from four locations in the South China Sea. To assess the difference in patterns of dispersal between sexes, we genotyped all individuals with 18 microsatellites. Significant genetic differentiation was detected among and within sampling locations. The parameters of population structure (F ST), relatedness (r) and the mean assignment index (mAIC), in combination with data on tagging-recapture, supplied strong evidences for female-biased dispersal in the Asian seabass. This result contradicts our initial hypothesis of no sex difference in dispersal. We suggest that inbreeding avoidance of females, female mate choice under the condition of low mate competition among males, and male resource competition create a female-biased dispersal. The bigger body size of females may be a cause of the female-biased movement. Studies of dispersal using data from DNA markers and tagging-recapture in hermaphroditic fish species could enhance our understanding of patterns of dispersal in fish. © 2012 Yue et al.
Source Title: PLoS ONE
URI: https://scholarbank.nus.edu.sg/handle/10635/165571
ISSN: 19326203
DOI: 10.1371/journal.pone.0037976
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