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Effects of a Fixed-Crest Weir on Brown Shrimp Penaeus aztecus Growth, Mortality, and Emigration in a Louisiana Coastal Marsh

1989; Wiley; Volume: 9; Issue: 4 Linguagem: Inglês

10.1577/1548-8675(1989)009 2.3.co;2

1548-8675

E. Eric Knudsen, Ronald F. Paille, Barton D. Rogers, William H. Herke, James P. Geaghan,

Marine and fisheries research

North American Journal of Fisheries ManagementVolume 9, Issue 4 p. 411-419 Article Effects of a Fixed-Crest Weir on Brown Shrimp Penaeus aztecus Growth, Mortality, and Emigration in a Louisiana Coastal Marsh E. Eric Knudsen, E. Eric Knudsen Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA Present address: U.S. Fish and Wildlife Service, Fishcries Assistance Office, 2625 Parkmont Lane, Olympia, Washington 98502, USA.Search for more papers by this authorRonald F. Paille, Ronald F. Paille Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA Present address: U.S. Fish and Wildlife Service, Fish and Wildlife Enhancement Office 825 Kaliste Saloom, Suite 102, Lafayette, Louisiana 70508, USA.Search for more papers by this authorBarton D. Rogers, Barton D. Rogers Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA The unit is jointly supported by the U.S. Fish and Wildlife Service, the Louisiana State University Agricultural Center, the Louisiana Department of Wildlife and Fisheries, and the Wildlife Management Institute.Search for more papers by this authorWilliam H. Herke, William H. Herke Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA The unit is jointly supported by the U.S. Fish and Wildlife Service, the Louisiana State University Agricultural Center, the Louisiana Department of Wildlife and Fisheries, and the Wildlife Management Institute.Search for more papers by this authorJames P. Geaghan, James P. Geaghan Department of Experimental Statistics, Louisiana State University, Baton Rouge, Louisiana, 70803 USASearch for more papers by this author E. Eric Knudsen, E. Eric Knudsen Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA Present address: U.S. Fish and Wildlife Service, Fishcries Assistance Office, 2625 Parkmont Lane, Olympia, Washington 98502, USA.Search for more papers by this authorRonald F. Paille, Ronald F. Paille Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA Present address: U.S. Fish and Wildlife Service, Fish and Wildlife Enhancement Office 825 Kaliste Saloom, Suite 102, Lafayette, Louisiana 70508, USA.Search for more papers by this authorBarton D. Rogers, Barton D. Rogers Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA The unit is jointly supported by the U.S. Fish and Wildlife Service, the Louisiana State University Agricultural Center, the Louisiana Department of Wildlife and Fisheries, and the Wildlife Management Institute.Search for more papers by this authorWilliam H. Herke, William H. Herke Louisiana Cooperative Fish and Wildlife Research Unit, School of Forestry, Wildlife and Fisheries, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, 70803 USA The unit is jointly supported by the U.S. Fish and Wildlife Service, the Louisiana State University Agricultural Center, the Louisiana Department of Wildlife and Fisheries, and the Wildlife Management Institute.Search for more papers by this authorJames P. Geaghan, James P. Geaghan Department of Experimental Statistics, Louisiana State University, Baton Rouge, Louisiana, 70803 USASearch for more papers by this author First published: Fall 1989 https://doi.org/10.1577/1548-8675(1989)009 2.3.CO;2Citations: 11 AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract We investigated the effects of water-control weirs on growth, emigration, and mortality of brown shrimp. Juvenile brown shrimp were captured, marked, and released in two shallowwater marsh ponds. One pond had a weir at its only exit. All surviving marked brown shrimp were recaptured as they emigrated from each pond. Shrimp remained in the weired pond 12–18 d longer after marking than in the unweired pond. Growth of brown shrimp was best described by quadratic functions and was significantly faster in the weired pond than in the unweired one although differences in growth may have been confounded by delayed emigration from the weired pond. Estimated monthly instantaneous mortality of juvenile brown shrimp, from marking to recapture, ranged from 0.550 to 1.582 in the weired pond and 0.877 to 1.270 in the unweired pond and apparently varied between years. Even though brown shrimp remained in the weired pond longer, peaks in emigration from both ponds coincided with new and full moons. Mean total lengths of marked brown shrimp at emigration ranged from 83 to 106 mm for the weired pond and from 66 to 84 mm for the unweired pond. Size of shrimp at emigration and time of emigration varied between years. Although brown shrimp emigrating from the weired pond were larger than those from the unweired pond, probably due to faster growth and delayed emigration, conclusions from concurrent research were that total biomass of brown shrimp emigrating from the unweired pond was more than double the biomass from the weired pond. Citing Literature Volume9, Issue4Fall 1989Pages 411-419 RelatedInformation