Results 261 to 270 of about 70,249 (274)
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Energy metabolism in Oreochromis niloticus
Aquaculture, 1989A series of experiments was carried out to study the energy metabolism of Oreochromis niloticus. During starvation the energy loss of the fish was 25 kJ kg−0.8 d−1 (54 kJ kg−1 d−1). Maintenance requirement for energy amounted to 57 kJ ME kg−0.8 d−1 (116 kJ ME kg−1 d−1). Apparent utilization of metabolizable energy (ME) below maintenance requirement was
K. Meyer-Burgdorff +2 more
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Treatment trails of saprolegniosis in Oreochromis niloticus
Alexandria Journal of Veterinary Sciences, 2017This study was performed to compare between different methods of Saprolegnia treatment hydrogen peroxide H2O2, potassium permanganate KMnO4 and biological treatment non pathogenic bacterial strain Aeromonas hydrophila (NPAH). 120 Oreochromis niloticus were randomly collected and investigated for Saprolegnia fungal infection and infection rate were 10%,
A. Abdel–Hakim +2 more
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Innervation of testes in the tilapia Oreochromis niloticus
Aquaculture, 1995Abstract The innervation of the testes of Oreochromis niloticus was examined immunohistochemically and ultrastructurally. Many thick nerve bundles, which penetrate the testes via the mesorchium, are distributed in the wall surrounding the efferent duct. The neurons appear to terminate at the surface of smooth muscle cells in the efferent duct wall.
Masaru Nakamura, Yoshitaka Nagahama
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Effects of Prolactins on the Chromatophores of the Tilapia, Oreochromis niloticus
General and Comparative Endocrinology, 1993Using isolated scales and split-fin preparations of the tilapia Oreochromis niloticus, the effects of a pair of prolactins of the tilapia Oreochromis mossambicus (tPRL177 and tPRL188) and of ovine prolactin (oPRL) on chromatophores were studied in vitro. These peptides caused melanosome aggregation and dispersion of xanthosomes, especially in the split
Mihoko Makino +3 more
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The biology of Oreochromis niloticus in a polluted canal.
Ecotoxicology (London, England), 2003In the present investigation, length-weight relationship, condition factor, age, growth, mortality, gonadosomatic index (GSI) and fecundity of tilapias (Bolti in Arabic): Oreochromis niloticus, from Shanawan drainage canal (SDC), Al-Minufiya Province, Egypt, were studied.
Mohammad M.N. Authman +2 more
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Gene transfer in tilapia (Oreochromis niloticus)
Aquaculture, 1988Abstract The microinjection of the human growth hormone gene into the germinal disc and the development of 90-day live transgenic tilapia are reported. Three different spawns, treated 10 min, 21–24 h or 40–43 h after spawning, were used. For microinjection a linear 4.0 kb EcoRI-DNA fragment containing the mouse metallothionein-I promoter (mMT-I ...
Gabriele Hörstgen-Schwark +3 more
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Mercury exposure in the freshwater tilapia Oreochromis niloticus
Environmental Pollution, 2010Mercury (Hg) can be strongly accumulated and biomagnified along aquatic food chain, but the exposure pathway remains little studied. In this study, we quantified the uptake and elimination of both inorganic mercury [as Hg(II)] and methylmercury (as MeHg) in an important farmed freshwater fish, the tilapia Oreochromis niloticus, using (203)Hg ...
Wang, Rui +2 more
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Focusing on the functional characterization of the anserinase from Oreochromis niloticus
International Journal of Biological Macromolecules, 2019Carnosine, anserine and homocarnosine are the three most representative compounds of the histidine dipeptides family, widely distributed in mammals in different amounts depending on the species and the tissue considered. Histidine dipeptides are mainly degraded by two different carnosinase homologues: a highly specific metal-ion dependent carnosinase ...
Pirone L +4 more
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Nile Tilapia Oreochromis niloticus (L.)
2017Nile tilapia Oreochromis niloticus (L.) is one of the most widely cultured and most widespread invasive fish species globally. It was the most common alien fish species in South China where it has successfully established populations in the major rivers, and became the dominant species in many sites.
Yexin Yang +7 more
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Evaluation of etoxazole toxicity in the liver of Oreochromis niloticus
Pesticide Biochemistry and Physiology, 2004Abstract The effects of etoxazole were evaluated in freshwater fish Oreochromis niloticus from five different sublethal etoxazole concentrations in order to study the biochemical response, photometrically. No changes were observed in the activities of antioxidant enzymes such as superoxide dismutase (SOD, EC 1.15.1.1), catalase (CAT, EC 1.11.1.6 ...
Sevgiler Y., Oruç E.Ö., Üner N.
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