Age, growth, and maturation of Lolliguncula brevis (Cephalopoda : Loliginidae) in the northwestern Gulf of Mexico with a comparison of length-frequency versus statolith age analysis

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dc.acquisition-srcDownloaded from-Web of Scienceen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorJackson GDen_US
dc.contributor.authorForsythe JWen_US
dc.contributor.authorHixon RFen_US
dc.contributor.authorHanlon RTen_US
dc.contributor.otherCanadian Journal of Fisheries and Aquatic Sciencesen_US
dc.date.accessioned2010-02-15T17:17:20Z
dc.date.available2010-02-15T17:17:20Z
dc.date.issued1997 Decen_US
dc.degreeen_US
dc.description2907-2919en_US
dc.description-otheren_US
dc.description.abstractOver 2000 individuals of Lolliguncula brevis were collected from 1975 to 1979 in the northern Gulf of Mexico off the Texas coast; their growth and reproductive biology were analyzed by traditional fisheries methods (ELEFAN analysis of the length-frequency data). From 1994 to 1996, 112 squid were captured in Galveston Bay, near Galveston Island, Texas, and their age and growth determined by statolith increment analysis. The results were strikingly different between the two approaches. Length-frequency analysis of growth overestimated life span by a factor of three to seven times. Statolith increment counts, verified by laboratory growth validation experiments, indicate that this species is very short-lived, in the order of 100-200 days depending on temperature. A slight increase in temperature during the early stage of development can greatly shorten the life span. This study provides evidence that increased temperature during a squid's early growth period could markedly accelerate growth. Mature individuals occurred throughout the year, although there were many more mature males collected than females. Gonad growth and maturation in L. brevis appear to be associated more with size than with individual age. There is now compelling evidence that length-frequency analysis should be abandoned as a technique for determining squid growthen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/23477
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dc.locationen_US
dc.longitudeen_US
dc.notesTimes Cited: 25ArticleEnglishJackson, G. DJames Cook Univ N Queensland, Dept Marine Biol, Townsville, Qld 4811, AustraliaCited References Count: 64ZC037RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADAOTTAWAen_US
dc.placeen_US
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dc.relation.ispartofseries51123.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectCOD GADUS-MORHUAen_US
dc.subjectLOLIGO-VULGARISen_US
dc.subjectIDIOSEPIUS-PYGMAEUSen_US
dc.subjectSTOCK STRUCTUREen_US
dc.subjectEUROPEAN SQUIDen_US
dc.subjectFINNED SQUIDen_US
dc.subjectLIFE-HISTORYen_US
dc.subjectTEMPERATUREen_US
dc.subjectEURYHALINEen_US
dc.subjectMOLLUSCAen_US
dc.titleAge, growth, and maturation of Lolliguncula brevis (Cephalopoda : Loliginidae) in the northwestern Gulf of Mexico with a comparison of length-frequency versus statolith age analysisen_US
dc.typeJournalen_US
dc.universityen_US
dc.vol-issue54(12)en_US

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