Intake screens for sampling fish populations. The size-selectivity problem.

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dc.acquisition-srcen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorMargraf, F.J.en_US
dc.contributor.authorChase, D.M.en_US
dc.contributor.authorStrawn, K.en_US
dc.contributor.otherNorth American Journal of Fisheries Managementen_US
dc.date.accessioned2010-02-15T17:02:48Z
dc.date.available2010-02-15T17:02:48Z
dc.date.issued1985en_US
dc.degreeen_US
dc.descriptionp. 210-213.en_US
dc.description-otheren_US
dc.description.abstractThe size selectivity of the intake screen at the P.H. Robinson generating station on Galveston Bay, Texas [USA] was compared with that of a 3-m otter trawl hauled in the intake waters. A means of predicting size selectivity of the intake screens was evaluated for brown shrimp (Penaeus aztecus), white shrimp (P. setiferus), gulf menhaden (Brevoortia patronus), bay anchovy (Anchoa mitchilli), sand seatrout (Cynoscion arenarius) and Atlantic croaker (Micropogonias undulatus). The trawl generally caught smaller individuals than the intake screens, with the relative frequency of catch by size gradually increasing to a peak at an intermediate length of a species, then decreasing as its length increased. Conversely, the relative frequency of collection at the intake screens increased abruptly at a predictable threshold length. Above this threshold, catches decreased gradually, presumably because larger individuals were both less abundant and less susceptible to capture than smaller ones. Intake screens are a practical means of sampling fish populations and provide data that are as useful as trawl data for most fishery analyses.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeGalveston Bayen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/21307
dc.latitudeen_US
dc.locationNOT AVAILABLE IN-HOUSE.en_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries351.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectpopulation characteristicsen_US
dc.subjectpower plantsen_US
dc.subjecttrawl netsen_US
dc.subjectPenaeus aztecusen_US
dc.subjectPenaeus setiferusen_US
dc.subjectBrevoortia patronusen_US
dc.subjectgulf menhadenen_US
dc.subjectwhite shrimpen_US
dc.subjectbrown shrimpen_US
dc.titleIntake screens for sampling fish populations. The size-selectivity problem.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue5(2a)en_US

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