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Evidence For A Relation Between A White Perch Young-Of-The-Year Index And Indices Of Later Life Stages
Mosca, Thomas C. Austin, Herbert M. Plotner, David M.
Mosca, Thomas C.
Austin, Herbert M.
Plotner, David M.
Abstract
Juvenile indices are employed in fisheries management to predict the future abundance of harvestable adults. Frequently, regulations on the utilization of the resource, and a lack of fishery independent abundance data, make verification of the prediction accuracy impossible. In the case of white perch in Virginia, this is not so. Using the weighting system developed for a Chesapeake Bay-wide index of juvenile striped bass abundance based on summertime beach seine data collected in nursery ground waters, we developed a similar index for white perch in the Virginia portion of the Bay. Regressions against Virginia Institute of Marine Science otter trawl survey indices (taken in deep, mesohaline water during winter months) for young-of-the-year (r 2 = 0.719, p = 0.001) and age 1+ (r 2 = 0.666, p = 0.001) white perch were significant and positive. These results lend support for the continued use of juvenile indices for finfish management.
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1995
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Chesapeake Research Consortium
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crc149_MOSCA.pdf
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VIMS Books and Book Chapters, Watersheds -- Chesapeake Bay Region (Md. and Va.) -- Congresses, Sustainable development -- Experimental areas -- Chesapeake Bay Region (Md. and Va.) -- Congresses
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Virginia Institute of Marine Science