عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq304245996
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Ecology and performance of stocked brook trout (Salvelinus fontinalis) in two Maine ponds
نام عام مواد
[Thesis]
نام نخستين پديدآور
C. F. Hartleb
نام ساير پديدآوران
J. R. Moring
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
The University of Maine
تاریخ نشرو بخش و غیره
1996
مشخصات ظاهری
نام خاص و کميت اثر
210
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
The University of Maine
امتياز متن
1996
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Performance by stocked brook trout (Salvelinus fontinalis) differs with respect to the native species present in the community into which the trout are placed. Understanding the dietary and habitat requirements of the native species, and how the brook trout alter the ecosystem, can lead to better trout management. I investigated diet composition and prey abundance and location in order to determine the foraging habitat and dietary overlap of non-salmonid species in two Maine ponds that received hatchery-reared brook trout. Golden shiners (Notemigonus crysoleucus) and chain pickerel (Esox niger) had specialized diets, feeding on plants/algae and other fish, respectively. Yellow perch (Perca flavescens) and pumpkinseeds (Lepomis gibbosus) had broad diets, but coexisted because of abundant prey and habitat partitioning. Stocked brook trout growth and survival were poor in one pond because of unsuitable temperature and oxygen conditions. Brook trout were restricted to foraging in epipelagic water, which altered the foraging patterns of yellow perch. The diet of brook trout stocked in the other pond did not overlap with any other species and brook trout occupied foraging habitat that was underutilized by the fish community. Introduced brook trout did not seem to affect the interactions of the native species, and the brook trout appeared to fill a niche where suitable temperature, oxygen and prey allowed continued survival. In the final section of this study, I developed a bioenergetics model based on a synthesis of studies on the energetics of brook trout and other salmonids. Temperatures that exceeded optimal conditions for brook trout decreased growth and survival. Lowest maintenance rations were required by brook trout at 13C and by smaller-sized trout. Food limitations and interspecific competition affected larger brook trout less than smaller-sized fry. No differences were observed in the survival and growth of fall-fingerling and spring-yearling brook trout and either size could be stocked when conditions are sub-optimal.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Aquaculture
موضوع مستند نشده
Biological sciences
موضوع مستند نشده
Ecology
موضوع مستند نشده
Fish production
موضوع مستند نشده
Freshwater ecology
موضوع مستند نشده
Zoology
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
C. F. Hartleb
مستند نام اشخاص تاييد نشده
J. R. Moring
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
