Radiographic studies on morphological anomalies in artificially spawned Heterobranchus longifilis Valenciennes, 1840 F1 generation
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چکیده
منابع مشابه
Daily activity rhythms of the African catfish Heterobranchus longifilis (Clariidae) in an experimental enclosure
The swimming, air-gaping, and agonistic behaviours of Heterobranchus longifilis (318 ± 67 mm) were examined while fish were in a fasted state under 12L:12D and variable group size (2, 5, 10 and 15 fish) in a 1000L aquarium. Fish exhibited a predominantly nocturnal activity pattern independent of group size. A diurnal peak of activity occurred, however, at the usual feeding time. A reduction in ...
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در سال های اخیر به دلیل افزایش دمای متوسط کره زمین، بشر به دنبال روش های جایگزین برای تامین توان الکتریکی مورد نیاز خود بوده و همچنین در اکثر نقاط جهان سوزاندن سوخت های فسیلی در نیروگاه های حرارتی به عنوان مهم ترین روش تولید توان الکتریکی مطرح بوده است. به دلیل توجه به مسایل زیست محیطی، استفاده از منابع انرژی تجدید پذیر در سال های اخیر شدت یافته است. نیروگاه های بادی به عنوان یک منبع تولید توان...
15 صفحه اولFISH BYCATCH OF THE LAULAO CATFISH Brachyplatystoma vaillantii (VALENCIENNES, 1840) TRAWL FISHERY IN THE AMAZON ESTUARY
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In the present study we aimed to compare the feeding ecology of Hypostomus punctatus from a coastal stream from Southeast Brazil with data previously published for the same study site before environmental changes. Feeding preferences were assessed through a sample of 138 specimens (67 from the dry and 71 from the rainy season) using the Index of Alimentary Importance (IAi). We registered five d...
متن کاملResponse of Genetically Improved Heterobranchus Longifilis Juveniles to Different Diets Containing Beniseed Meal and Extruded Soybean Meal
Three isoproteic 35% crude protein diets were formulated with same basal ingredients and ranging levels of extruded soybean, beniseed and yellow maize meals and fed at 5% body weight to groups of genetically improved Heterobranchus longifilis juveniles of mean weight 79.57± 0.365g in nine out door concrete tanks each measuring 2x2x1m. The tanks were filled to 2/3 of their holding capacity with ...
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ژورنال
عنوان ژورنال: Sokoto Journal of Veterinary Sciences
سال: 1970
ISSN: 1595-093X,1595-093X
DOI: 10.4314/sokjvs.v13i1.2