نتایج جستجو برای: indian halibut psettodes erumei
تعداد نتایج: 69199 فیلتر نتایج به سال:
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The problem of determining when larvae should be offered food is particularly difficult in a Ž . species such as Atlantic halibut that has a long yolk-sac period 280–320 degree days, dd . In order to help determine at what age Atlantic halibut larvae are able to digest food, we compared the activities of key digestive enzymes in four yolk-sac stages at an age interval that has been recommended ...
To minimize negative effects of competition, predators must divide resources along one or more niche dimensions. Trophic separation is a principal method resource partitioning in marine environments and often assessed by quantifying diets fishes with similar lengths. Taxonomic differences allometric growth, however, suggest that the degree gape limitation at given body size varies among species...
چکیده این پژوهش برای بررسیزیتودهو فراوانی طولی ذخایر کفزیان در پاییز و تابستان 1379 در آبهای دریای عمان محدوده استان سیستان و بلوچستان برای تخمین ذخایر 3 گونه حسون (کریشو) (Saurid tumbil)، کفشک تیزدندان (Psettodes erumei) و زمینکن خالباله (Grammoplites suppositus) به روش مساحت جاروب شده به اجرا در آمد. محدوده اجرای پروژه از منطقه میدانی ...
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