首页> 美国政府科技报告 >Identification of larval pacific lampreys (Lampetra tridentata), river lampreys(L. ayresi) and western brook lampreys (L. richardsoni) and thermal requirements of early life history stages of lampreys : annual report 2000
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Identification of larval pacific lampreys (Lampetra tridentata), river lampreys(L. ayresi) and western brook lampreys (L. richardsoni) and thermal requirements of early life history stages of lampreys : annual report 2000

机译:(负于ayresi)幼虫太平洋七鳃鳗(七鳃鳗三齿),河七鳃鳗和西部溪七鳃鳗(L. richardsoni)和七鳃鳗的早期生命阶段的散热要求的鉴定:2000年年度报告

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摘要

Pacific lampreys (Lampetra tridentata) in the Columbia River Basin (CRB) arebelieved to have declined to only a remnant of their population prior to human development, and actions are currently being considered for their recovery (Close et al. 1995). Identifying biological factors that may limit lamprey production in the CRB is critical for their recovery, and while some biological information for this and sympatric species the western brook lamprey (L. richardsoni) and the river lamprey (L. ayresi) is available from studies in Canada (Pletcher 1963, Beamish 1980, Richards 1980, Beamish and Levings 1991), little is known about the biology of lampreys in the CRB.

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