نتایج جستجو برای: astronotus ocellatus
تعداد نتایج: 516 فیلتر نتایج به سال:
Nota sobre a identificação dos sexos do Apaiari, Astronotus ocellatus (Cuvier): (Pisces - Cichlidae)
We tested the effect of social isolation on the aggressiveness of an Amazonian fish: Astronotus ocellatus. Ten juvenile fishes were transferred from a group aquarium (60 x 60 x 40 cm) containing 15 individuals (without distinguishing sex) to an isolation aquarium (50 x 40 x 40 cm). Aggressiveness was tested by means of attacks on and displays toward the mirror image. The behavior was video-reco...
At Chapel Hill, Chapel Hill, North Carolina; Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Sistemas Locales de Atención Integral a la Salud, León (SILAIS-León), Leon, Nicaragua; Hospital Escuela Oscar Danilo Rosales Argüello (HEODRA), León, Nicaragua, Leon, Nicaragua; Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill...
JOHN D. MCVAY*, OSCAR FLORES-VILLELA and BRYAN CARSTENS Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA Facultad de Ciencias, Museo de Zoologia, Universidad Nacional Autonoma de Mexico, Circuito Extrior de CU, Mexico, DF, 04510, Mexico Department of Evolution, Ecology and Organismal Biology, The Ohio State University, 318 W. 12th Avenue, Columbus, OH, ...
The Naturally Occurring Accommodative Response of the Oscar, Astronotus ocellatus, to Visual Stimuli
Early-life exposure to mild stressors can assist animals in coping with more stressful events later life. This study was aimed at investigating how early stress and dietary lipid contents affect growth, hematology, blood biochemistry, immunological responses, antioxidant system, liver enzymes, responses of oscar (Astronotus ocellatus) ( ...
Fish eosinophilic granular cells are found in the connective tissues of structures associated with external environment. These similar to mammalian mast terms structural and functional characteristics. The cytoplasmic granules these give different staining reactions depending on fixative type. This study aimed determine properties densities Oscar fish (Astronotus ocellatus Agassiz, 1831) intest...
مطالعه ی حاضر به منظور سنجش تأثیر سطوح مختلف مکمل اسیدی فایر بر کارایی تغذیه و برخی از پارامترهای خونی و ایمنی ماهی اسکار تایگر (astronotus ocellatus) اجرا شد. تعداد 96 قطعه بچه ماهی اسکار با میانگین وزنی 33/1± 08/7 گرم در چهار تیمار شامل سطوح 0، 2، 4 و 8 گرم در کیلوگرم مکمل اسیدی فایر بایوترونیک (شرکتbiomin®- اتریش) در جیره به مدت 8 هفته تغذیه شدند. در پایان دوره ی تغذیه، زیست سنجی و نمونه ...
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