Stocking effectiveness assessment and marking techniques in marine stock enhancement
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چکیده
منابع مشابه
Restocking and stock enhancement of marine invertebrate fisheries.
Follow up what we will offer in this article about restocking and stock enhancement of marine invertebrate fisheries. You know really that this book is coming as the best seller book today. So, when you are really a good reader or you're fans of the author, it does will be funny if you don't have this book. It means that you have to get this book. For you who are starting to learn about somethi...
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Lake Wcrbcllin (804 ha. 18 m mean depth). a mesotrophic lake in north-eastem Germany yielded between <] and 14 tons (1.2 and 17.4 kg/ha) of vendace during the] 970's and 1980"'.;. For the last 20 years. the lake has been stocked annually with 0.5 3.3 million eleutheroembryos (620 4100 per ha) in early spring. but the population is presumably self-sustaining. The contribution of stocking to comm...
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Several methods are available for marking adult salamanders and anurans (see Ferner 1979). The type of system used depends on the size and natural history of the target organism as well as time and resources. Some marking methods require special equipment, training, or permits from state or national wildlife agencies. Marks can be permanent, temporary, datespecific, or individual-specific. Long...
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Parentage analysis, employing five hypervariable microsatellite markers, was used to follow spawning patterns of red drum Sciaenops ocellatus broodfish in two spawning tanks through most of a calendar year in a marine fish hatchery dedicated to stock enhancement. Five of six dams and all four sires spawned at least once during the year. Variation in dam and sire spawning incidence and in number...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 2006
ISSN: 0021-5392,1349-998X
DOI: 10.2331/suisan.72.450