کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9450203 | 1306740 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Deepwater Spawning by Lake Trout (Salvelinus namaycush) in Keuka Lake, New York
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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چکیده انگلیسی
Egg deposition in deep water by a self-sustaining lake trout population is reported for Keuka Lake, one of the Finger Lakes of New York. Deep water spawning may be a critically important component to the restoration of lake trout in the Great Lakes. In 2002, spawning occurred on or about December 6 at a water temperature of 6.7°C at depths ranging from 24.6 to 27.7 m, with an average egg abundance of 1,318 eggs·mâ2. The population, presumably the native strain, spawned on a steep slope (30-40°) on small shale substrate with little interstitial space. Abundance of egg predators was low and limited to slimy sculpins (6.9 sculpins·mâ2). Early mortality syndrome (EMS), associated with an alewife diet-mediated thiamine deficiency in parents, was detected in larvae reared from the wild-caught eggs, but was of insufficient magnitude to eliminate natural reproduction in Keuka Lake.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Great Lakes Research - Volume 31, Issue 1, 2005, Pages 1-10
Journal: Journal of Great Lakes Research - Volume 31, Issue 1, 2005, Pages 1-10
نویسندگان
John Fitzsimons, Georgina Fodor, Bill Williston, Henk Don, Bruce Gray, Mike Benner, Todd Breedon, Dave Gilroy,