Population-Structure of Spotted Sea-Trout Inhabiting the Texas Gulf-Coast - An Allozymic Perspective

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dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorKing TLen_US
dc.contributor.authorPate HOen_US
dc.contributor.otherTransactions of the American Fisheries Societyen_US
dc.date.accessioned2010-02-15T17:17:39Z
dc.date.available2010-02-15T17:17:39Z
dc.date.issued1992 Noven_US
dc.degreeen_US
dc.description746-756en_US
dc.description-otheren_US
dc.description.abstractSpotted seatrout Cynoscion nebulosus (N = 674) from 12 geographic populations along the Texas and northern Mexico Gulf coasts were surveyed to determine population structure as indicated by the distribution of electrophoretically detectable allelic variants. The percentage of polymorphic loci among 44 putative gene loci averaged 15.5% and ranged from 13.6 to 15.9%. The percentage of heterozygous loci per individual (H) for all loci averaged 1.6% and ranged from 1.2% in East Matagorda Bay to 2.3% in Rio Soto La Marina. A cline existed in the frequency of the sAAT-2*80 allele (for aspartate aminotransferase) (0.9-17.1%) and in average individual heterozygosity with respect to degrees north latitude and west longitude. Heterogeneity tests indicated allele counts at the sAAT-2* locus were distributed heterogeneously among the 12 localities. Subpopulation differentiation was low (F(ST) = 0.012), and quantitative (N(e)m) and qualitative estimators suggested high gene flow throughout this study area. The correlogram of mean spatial autocorrelation coefficients of allele frequencies indicated response surfaces with short-distance, positive autocorrelation coupled with long-distance negative correlation. This finding conforms well to the spatial patterns expected under an ''isolation-by-distance'' population model. This study did not provide evidence of independent subpopulations (stocks) of spotted seatrout within Galveston Bay, as previously had been suggested, or among Texas bays, as had been suggested for Florida bays. A westerly directed, nearshore egg and larval transport system moving along the series of closely spaced bay systems may facilitate spotted seatrout gene exchange between Texas bay populations. Enzyme systems coded by rare alleles were identified and could prove useful as genetic markers in a spotted seatrout stocking programen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23520
dc.latitudeen_US
dc.locationen_US
dc.longitudeen_US
dc.notesTimes Cited: 6ArticleEnglishKING, T. LTEXAS PK & WILDLIFE DEPT HC 2,PERRY R BASS MARINE FISHERIES RES STN,BOX 385,PALACIOS,TX 77465Cited References Count: 45KR6225410 GROSVENOR LANE SUITE 110, BETHESDA, MD 20814-2199BETHESDAen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries51173.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectSPATIAL AUTOCORRELATIONen_US
dc.subjectNATURAL-POPULATIONSen_US
dc.subjectFREQUENCIESen_US
dc.subjectDISTANCEen_US
dc.subjectBIOLOGYen_US
dc.titlePopulation-Structure of Spotted Sea-Trout Inhabiting the Texas Gulf-Coast - An Allozymic Perspectiveen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue121(6)en_US

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