کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4398104 | 1305925 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Predator-free enclosures improve post-release survival of stocked common snook
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
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چکیده انگلیسی
Hatchery-reared fish may not be behaviorally competent in the wild, thus increasing mortality rates of fishes stocked into natural environments. The goal of this study was to determine whether in situ acclimation at release sites can increase survival of juvenile hatchery-reared common snook (Centropomus undecimalis), a catadromous fish, stocked into an estuary in Sarasota, Florida. Juvenile snook (76-251Â mm fork length) were tagged with coded-wire tags and released in four locations distributed along a salinity gradient of North Creek estuary. Three replicate releases were performed at each location. Overall, 1935 snook were acclimated in enclosures for 3Â d, then, released simultaneously with 1925 non-acclimated snook (non caged snook transported direct from the laboratory and stocked into the creek). For recaptures of snook at large for 3Â d or more, mean recapture rates of experimental release groups were significantly different (multiway ANOVA testing recapture rates by acclimation treatment, release site, and interactions, PÂ =Â 0.001). Specifically, mean recapture rates of acclimated groups were 1.92 higher than those for non-acclimated groups (PÂ =Â 0.002); hatchery snook recaptured from two of the four release sites represented 70% of total recaptures (PÂ =Â 0.001); interactions between acclimation treatment and release site were not significant (PÂ =Â 0.71). Site fidelity was approximately 60% regardless of acclimation condition, and did not significantly influence recapture rates. Thus, in situ acclimation has potential to significantly improve both post-release survival and information gained in stocking programs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Experimental Marine Biology and Ecology - Volume 335, Issue 2, 8 August 2006, Pages 302-311
Journal: Journal of Experimental Marine Biology and Ecology - Volume 335, Issue 2, 8 August 2006, Pages 302-311
نویسندگان
Nathan P. Brennan, Meaghan C. Darcy, Kenneth M. Leber,