Preliminary Evaluation of the Scale Method for Describing Age and Growth of Spotted Seatrout (Cynoscion nebulosus) in the Matagorda Bay System, Texas

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dc.call-noSPEC COLL GBAY ACC#10337
dc.creatorColura, Robert L.
dc.creatorPorter, Catherine W.
dc.creatorMaciorowski, Anthony F.
dc.date.accessioned2010-07-20T20:57:30Z
dc.date.available2010-07-20T20:57:30Z
dc.date.issued1984
dc.description18 pages; available for download at the link below.en
dc.description.abstractInconsistent literature and inadequate methods validation data prompted a pilot study to evaluate the use of scales to estimate age and growth of spotted seatrout (Cynoscion nebulosus) in Matagorda Bay, Texas. Scale impressions were read with 80 percent agreement between examiners on the first reading. Time of annulus formation appeared prolonged, but too few data were available to conclude whether this was characteristic or the result of marginal increment variability and small sample sizes. Preliminary growth estimates indicated females were significantly larger than males through age IV. Comparison of Matagorda Bay back calculated lengths with averaged values obtained in Florida investigations indicated age I males and females through age IV were 16 to 20 percent longer, although < 10 percent differential growth was evident for remaining age groups. The scale method has the potential to reliably estimate spotted seatrout age and growth, but conclusive demonstration that annuli are formed once per year is necessary before it can be incorporated into Texas management plans.en
dc.identifier.otherAccession # 10337
dc.identifier.urihttp://hdl.handle.net/1969.3/26831
dc.language.isoen_USen
dc.locationGBIC Special Collection
dc.publisherTexas Parks and Wildlife Department, Coastal Fisheries Branchen
dc.relation.ispartofseriesManagement Data Series Number;57
dc.subjectspotted seatrouten
dc.subjectCynoscion nebulosusen
dc.subjectMatagorda Bay, Texasen
dc.subjectage determinationen
dc.titlePreliminary Evaluation of the Scale Method for Describing Age and Growth of Spotted Seatrout (Cynoscion nebulosus) in the Matagorda Bay System, Texasen
dc.typeTechnical Reporten

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