Results 131 to 140 of about 26,869 (164)

Role of Cortisol in Hypoosmoregulation in Larvae of the Tilapia (Oreochromis mossambicus)

General and Comparative Endocrinology, 1993
The total cortisol content in tilapia was 55 pg immediately following fertilization, then decreased abruptly and maintained a lower level of 10-20 pg until hatching; after hatching the cortisol content increased to 50 pg by the 7th day. Fertilized eggs were incubated in either 32% saltwater or fresh water and sampled at various developmental stages ...
P P, Hwang, S M, Wu
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Basolateral glucose transport by intestine of teleost, Oreochromis mossambicus

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1987
Transport characteristics of D-glucose by isolated basolateral membrane vesicles of the teleost fish, Oreochromis mossambicus, were measured. Specific activity of the vesicle Na-K-adenosinetriphosphatase was increased 11-fold, whereas specific activities of brush-border and organelle membrane enzymes were enriched only 0.3- to 0.8-fold.
S J, Reshkin, G A, Ahearn
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Androgen levels and energy metabolism in Oreochromis mossambicus

Journal of Fish Biology, 2004
Two studies were conducted to test the relationship between androgens and routine metabolism in the Mozambique tilapia Oreochromis mossambicus. In the first study, endogenous levels of plasma levels of androgens and oxygen consumption rate were measured.
Ros, A. F. H., Becker, K., Canario, Adelino V. M., Oliveira, R. F.   +3 more
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Feminization of Oreochromis mossambicus by the administration of diethylstilbestrol

Aquaculture, 1989
Abstract Gonadally undifferentiated Oreochromis mossambicus fry were given different doses of diethylstilbestrol (DES) orally for 11 or 15 days and reared for 70 days. All-female populations were produced at doses >100 μg DES/g diet in both treatments. Mortality increased at higher doses (>500 μg/g). The hormone treatment significantly ( P >0.0005)
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Temperature sensitivity of skeletal ontogeny in Oreochromis mossambicus

Journal of Fish Biology, 2004
Sensitivity of skeletal ontogenesis to temperature was assessed in Mozambican tilapia Oreochromis mossambicus and culture temperature manipulations (22, 27 and 32° C) were used to establish if age or length gave the most suitable metric for standardization.
Campinho, Marco António, Moutou, K. A., Power, Deborah   +2 more
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Induction of sex reversal in Oreochromis mossambicus by diethylstilbestrol

Journal of Applied Ichthyology, 1990
Summary The efficacy of the synthetic estrogen, diethylstilbestrol (DES), for sex-reversal in the Java tilapia, Oreochromis mossambicus was investigated. Fry of 8–10 mm total length were fed diets containing 25, 50 and 100 ppm of DES for 30 days in plastic pools; this was followed by 45–65 days rearing in fertilized cement cisterns where hormone ...
N. Basavaraja, M. C. Nandeesha, T.J. Varghese, P. Keshavanath, G. K. Srikanth   +4 more
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Effects of temperature on the deformity and sex differentiation of tilapia,Oreochromis mossambicus

Journal of Experimental Zoology, 2000
The effects of temperature on the deformity and sex differentiation of tilapia, Oreochromis mossambicus, were investigated. Zero- (the hatching day), 5-, and 10-day-old tilapia were respectively divided into 4 groups that were reared at 20, 24, 28, and 32 degrees C for 5 days. Percentages of deformity were significantly increased when tilapia were kept
L H, Wang, C L, Tsai
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Toxic Effects of Paclobutrazol in Oreochromis mossambicus Fingerlings

Pesticide Research Journal, 2018
A static renewal bioassay of fungicide paclobutrazol (PBZ) against fingerlings of tilapia, Oreochromis mossambicus exposed for 96 h showed LC50 of 11.80 mgL-1. Physiological investigation of Tilapia exposed to two sub-lethal concentrations of PBZ [1/10th (1.18 mg L-1) and 1/5th of LC50 (2.36 mg L-1)] for 28 d revealed that the oxygen consumption rate ...
Mayuri N. Ghane, Harish B. Dhamagaye, Shashikant J. Meshram, Aksah Salunkhe   +3 more
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Involvement of galanin in reproduction of male tilapia, Oreochromis mossambicus

Fish Physiology and Biochemistry
Galanin(GAL) is recognised for its involvement in various physiological, behavioural, and neuroendocrine functions in vertebrates. Yet, the impact of this peptide on spermatogenesis in fish remains understudied. In this investigation, the administration of 5 µg of GAL receptor agonist (GAL-A) to the tilapia Oreochromis mossambicus did not significantly
Ashwini, Biradar, C B, Ganesh
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Toxicity of Chlorpyrifos to the Fish Oreochromis mossambicus

Bulletin of Environmental Contamination and Toxicology, 2003
J V, Rao, C H S, Rani, P, Kavitha, R N, Rao, S S, Madhavendra   +4 more
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