Evaluation of 1463-m trammel and 4-square gill nets for estimating finfish abundance in Texas bays.

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dc.acquisition-srcen_US
dc.call-noQL628.T4 M377 GBAYen_US
dc.call-noQL628.T4 M377en_US
dc.contract-noen_US
dc.contributor.authorMatlock, G.C.en_US
dc.contributor.authorWeaver, J.E.en_US
dc.contributor.authorMcEachron, L.W.en_US
dc.contributor.authorDailey, J.A.en_US
dc.contributor.authorHammerschmidt, P.C.en_US
dc.contributor.authorHegen, H.E.en_US
dc.contributor.authorHarrington, R.A.en_US
dc.contributor.authorStokes, G.M.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T16:56:30Z
dc.date.available2010-02-15T16:56:30Z
dc.date.issued1978en_US
dc.degreeen_US
dc.description87 pgs.en_US
dc.description-otheren_US
dc.description.abstractA 1463-m trammel net was compared with a 366-m trammel net and evaluated as a fish population sampling device in the nearshore habitat of Texas estuaries. Four separate 2.32-ha squares were delimited by monofilament nylon gill nets, each of a different size stretched mesh (7.6, 10.2, 12.7 and 15.2 cm); these nets were evaluated as fish population sampling devices in the open-water habitats of Texas estuaries. Neither the 1463-m trammel net nor the 4-square gill nets were acceptable for estimating adult finfish populations because of the lack of personnel, time, finance and number of available sampling sites required as well as possible equipment damage, adverse weather effects and sample size constraints. The 1463-m trammel net mean catches of black drum, Atlantic stingray, sea catfish and of 15 fish species combined were significantly different in each bay system. Galveston Bay system yielded the largest catches of black drum and sea catfish; San Antonio Bay system yielded the largest catches of Atlantic stingray. The mean catches of the remaining 12 individual species were not significantly different in each bay system. The greatest numbers of red drum, black drum, southern flounder and sea catfish were caught with 4-square gill nets in the Corpus Christi Bay system. Only lower Laguna Madre exceeded Corpus Christi Bay in catches of spotted seatrout. Generally, 4-square gill net catches of each species varied widely between bays. The mean catch rates of fish in the 1463-m and 366-m trammel nets were statistically similar, but the number of species caught with the long net was about twice that caught with the short net. The personnel, time, finance, net damage and sampling site constraints involved in the use of the long net did not apply to the short net. Tagged-fish recovery rates for all species with both gear types were generally low (<20%), perhaps because of lack of fish movement or of different behavioural responses by tagged and untagged fish.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeGalveston Bayen_US
dc.geo-codeSan Antonio Bayen_US
dc.geo-codeCorpus Christi Bayen_US
dc.geo-codeLaguna Madreen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/20236
dc.latitudeen_US
dc.locationGalveston Bay Collection; TAMUG circulating collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeAustin, TXen_US
dc.publisherTexas Parks and Wildlife Department, Coastal Fisheries Branchen_US
dc.relation.ispartofseries2453.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesPWD Report 3000-55en_US
dc.subjectfinfish fisheriesen_US
dc.subjectblack drumen_US
dc.subjectAtlantic stingrayen_US
dc.subjectsea catfishen_US
dc.subjectspotted seatrouten_US
dc.subjectabundanceen_US
dc.subjectentangling netsen_US
dc.subjecttaggingen_US
dc.titleEvaluation of 1463-m trammel and 4-square gill nets for estimating finfish abundance in Texas bays.en_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issueen_US

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