Caracterización hematológica de Astronotus ocellatus (Cichliformes: Cichlidae)
نویسندگان
چکیده
منابع مشابه
Oscars, Astronotus ocellatus, have a dietary requirement for vitamin C.
We found that vitamin C is an essential nutrient for an Amazonian ornamental fish, the oscar (Astronotus ocellatus). This was demonstrated by the absence of L-gulonolactone oxidase activity, the enzyme responsible for the biosynthesis of vitamin C, in liver or kidney of oscars and by a feeding trial in which oscars without vitamin C dietary supplementation developed clinical deficiency signs. F...
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Resumen. Aplicamos conceptos de la geometría fractal (GF) y procesamiento digital de imágenes (PDI) para caracterizar imágenes médicas de angioresonancia magnética cerebral (ARM) de pacientes normales y otros que presentan la patología de disminución del calibre arterial, con reducción de la luz interior de arterias. La caracterización de imágenes ARM permite obtener conocimiento para desarroll...
متن کاملInteractions between hypoxia tolerance and food deprivation in Amazonian oscars, Astronotus ocellatus.
Oscars are often subjected to a combination of low levels of oxygen and fasting during nest-guarding on Amazonian floodplains. We questioned whether this anorexia would aggravate the osmo-respiratory compromise. We compared fed and fasted oscars (10-14 days) in both normoxia and hypoxia (10-20 Torr, 4 h). Routine oxygen consumption rates (O2) were increased by 75% in fasted fish, reflecting beh...
متن کاملSelectivity in regeneration of the oculomotor nerve in the cichlid fish, Astronotus ocellatus.
IT has long been considered a general rule for nerve regeneration that the reinnervation of skeletal muscle is nonselective. Regenerating nerve fibers are supposed to reconnect with one skeletal muscle as readily as another according to studies covering a wide range of vertebrates (Weiss, 1937; Weiss & Taylor, 1944; Weiss & Hoag, 1946; Bernstein & Guth, 1961; Guth, 1961, 1962, 1963). Similarly,...
متن کاملThe Naturally Occurring Accommodative Response of the Oscar, Astronotus ocellatus, to Visual Stimuli
Observation of the naturally-occurring accommodative response of a highly visual teleost species provides the opportunity to study its stimulus-response accuracy. A video recording system, linked to a computer digitizing program, was used to measure accommodative changes in lens position in the oscar, Astronotus ocellatus, in response to known food stimuli. The largest lens deviations occurred ...
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ژورنال
عنوان ژورنال: Revista de Investigaciones Veterinarias del Perú
سال: 2020
ISSN: 1682-3419,1609-9117
DOI: 10.15381/rivep.v31i2.17827