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dc.contributor.authorPritchett, Marc S.
dc.date.accessioned2017-06-19T22:42:56Z
dc.date.available2017-06-19T22:42:56Z
dc.date.issued1990-05
dc.identifier.urihttp://hdl.handle.net/11122/7668
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 1990en_US
dc.description.abstractVertical distributions of larval fishes were examined in Auke Bay, Alaska using an opening/closing 1.0 m² Tucker trawl horizontally towed, at six depths, every four hours for 24 hours. In daytime, larval fishes concentrated at 5-10 m depths, coincident with highest prey densities. At night, osmerids ascended to the surface, walleye pollock and northern smoothtongue descended, whereas other species simply dispersed. A significant relationship existed between larval walleye pollock length and depth distribution with larger larvae migrating further than smaller larvae. Yolk-sac larvae were randomly distributed vertically. Larval walleye pollock are daytime feeders, primarily on copepod nauplii. Larval pollock approximately 7.0 - 7.5 mm standard length expand their diet to include copepodites.en_US
dc.language.isoen_USen_US
dc.titleIchthyoplankton vertical distribution and vertical migration in Auke Bay, Alaskaen_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.contributor.chairHaldorson, Lewis J.
dc.contributor.committeeShirley, Thomas C.
dc.contributor.committeeFagen, Robert
dc.contributor.committeeMcDowell, Peter
refterms.dateFOA2020-01-25T02:04:19Z


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