Effects of temperature and salinity on thermal death in postlarval brown shrimp, Penaeus aztecus.

dc.acquisition-srcen_US
dc.call-noAcc# 1475en_US
dc.contract-noen_US
dc.contributor.authorWiesepape, L.M.en_US
dc.contributor.authorAldrich, D.V.en_US
dc.contributor.authorStrawn,K.en_US
dc.contributor.otherPhysiological Zoologyen_US
dc.date.accessioned2010-02-15T16:50:31Z
dc.date.available2010-02-15T16:50:31Z
dc.date.issued1972en_US
dc.degreeen_US
dc.descriptionp. 22-33.en_US
dc.description-otheren_US
dc.description.abstractPostlarval brown shrimp acclimated at three temperatures (24.0, 29.0, and 34.0 C) were exposed to nine lethal temperatures for each acclimation temperature (36.0-37.6 C, 38.0-39.6 C, 38.6-40.2 C). Postlarval brown shrimp acclimated at the nine possible combinations of three acclimation temperatures (24.0, 29.0 , and 34.0 C) and three acclimation salinities (%5, 15%, and 25%) were tested for thermal resistance time at three test salinities ( 5%, 15%, and 25%) for each of two lethal high temperatures. Resistance time increased with increasing acclimation temperatures and decreased with increasing lethal temperature. Longer resistance times occurred at the higher test salinity (25%) than at the other two salinities. The lower acclimation salinity (5%) proved to be a better preparation for resisting lethally high temperatures, at all three test salinities, than either of the other two acclimation salinities. These results provide evidence of a new relationship between environmental salinity and the temperature tolerance of an estuarine organism. A reduction in the amount of work necessary for osmoregulation at 25% as compared with the two lower test salinities is thought to explain the higher thermal resistance at higher test salinities. Improved thermal resistance at all test salinities after acclimation at 5% is considered to be an adaption allowing the postlarvae to resist high temperatures when they are in low-salinity bays.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeNorthwestern Gulf of Mexicoen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/19232
dc.latitudeen_US
dc.locationGBIC Collection file roomen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries1475.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectbrown shrimpen_US
dc.subjectPenaeus aztecusen_US
dc.subjectjuvenilesen_US
dc.subjecttemperature effectsen_US
dc.subjectsalinity effectsen_US
dc.subjecttemperature toleranceen_US
dc.titleEffects of temperature and salinity on thermal death in postlarval brown shrimp, Penaeus aztecus.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue45(1)en_US
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