Substrate selection by demersal calanoid copepods in shallow waters of Galveston Bay, Texas.

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dc.acquisition-srcen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorBrown, E.K.en_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T16:57:10Z
dc.date.available2010-02-15T16:57:10Z
dc.date.issued1986en_US
dc.degreeen_US
dc.description77 p., Thesisen_US
dc.description-otheren_US
dc.description.abstractNatural substrate selection during the day by demersal calanoid copepods in Galveston Bay was examined with a suction sampler. Copepods were most abundant on silty-sand areas and sand flats compared with oysters. This substrate selection was more marked for males than for females and for juveniles compared to adults. Plankton tows at night over the different substrates provided density estimates of copepod populations which paralleled daytime densities. Pseudodiaptomus coronatus was the dominant species in the benthic samples and was most abundant on the silty-sand substrate fringing the oyster reef. A manipulative field experiment using containers filled with known substrates showed more P. coronatus present on oyster shell hash and clay than on sand. In laboratory studies on substrate selection by P. coronatus, clay and sand substrates were selected over oyster shell and the glass control. Differences in results of the various methods may be attributed to predator abundance and/or substrate coloration. Acartia tonsa and Paracalanus crassirostris exhibited demersal tendencies but showed no consistent substrate preferences. Pseudocyclops sp. was found almost exclusively on the oyster shell in the substrate container. Pigmented calanoid copepods that are larger (P. coronatus) and slower (Pseudocyclops sp.) possibly utilize different substrates as an adaptive strategy against predation pressure.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/1969.3/20355
dc.latitudeen_US
dc.locationNOT AVAILABLE IN-HOUSE.en_US
dc.longitudeen_US
dc.notesen_US
dc.placeCollege Station, Texasen_US
dc.publisherTexas A&M University.en_US
dc.relation.ispartofseries2563.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectmarine crustaceansen_US
dc.subjectcopepodsen_US
dc.subjectsubstrataen_US
dc.subjectPseudodiaptomus coronatusen_US
dc.subjectAcartia tonsaen_US
dc.subjectParacalanus crassirostrisen_US
dc.subjectsubstrate preferencesen_US
dc.titleSubstrate selection by demersal calanoid copepods in shallow waters of Galveston Bay, Texas.en_US
dc.typeBooken_US
dc.universityen_US
dc.vol-issueen_US

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Galveston Bay Bibliography
GBIC Abstracts (full text not available through Jack K. Williams Library)