Results 191 to 200 of about 3,988 (204)
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Effect of copper on blood coagulation of Oreochromis mossambicus (Cichlidae)
Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology, 1995The effect of copper on the blood coagulation in freshwater fish, Oreochromis mossambicus was investigated. These fish were exposed to sublethal copper concentrations over short-term (96 hr) and long-term (4 wk) periods, at 29 +/- 1 degree C (summer) and 19 +/- 1 degree C (winter), in experimental flow-through systems.
H.H. Du Preez +2 more
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Effect of thyroid hormones on hatching in the tilapia, Oreochromis mossambicus
General and Comparative Endocrinology, 1991Incubation of fertilized eggs of Oreochromis mossambicus in media containing varying doses of T3, T4, and phenylthiocarbamide (PTC) indicated that the thyroid hormones delayed hatching, while the antithyroid drug accelerated it. Denuded eggs were also incubated in the above media and the media were assayed at various time intervals for hatching enzyme.
Reddy, P.K., Lam, T.J.
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Role of Cortisol in Hypoosmoregulation in Larvae of the Tilapia (Oreochromis mossambicus)
General and Comparative Endocrinology, 1993The 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 ...
Su-Mei Wu, Pung-Pung Hwang
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Effects of temperature on the deformity and sex differentiation of tilapia,Oreochromis mossambicus
Journal of Experimental Zoology, 2000The 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
Li-Hsueh Wang, Ching-Lin Tsai
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Aquaculture, 2005
Abstract Tilapias are important candidate species for brackish water aquaculture and are increasingly cultured in coastal ponds including in polyculture with shrimp, thus creating a demand for tilapia genotypes well suited to elevated salinities. The Nile tilapia Oreochromis niloticus dominates freshwater tilapia culture and has been the subject of
Mair, Graham Charles, Kamal, Abu
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Abstract Tilapias are important candidate species for brackish water aquaculture and are increasingly cultured in coastal ponds including in polyculture with shrimp, thus creating a demand for tilapia genotypes well suited to elevated salinities. The Nile tilapia Oreochromis niloticus dominates freshwater tilapia culture and has been the subject of
Mair, Graham Charles, Kamal, Abu
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Production of all-female sterile-triploid Oreochromis mossambicus
Aquaculture, 1990All-female triploids were produced by heat shocking 2.5-min-old eggs which had been fertilized with sperm from a masculinized female (XX-♂). Induction of triploidy was confirmed using the estimates of red blood cell (RBC) nuclear volume. Ovaries of the control diploids were packed with oocytes, while those of triploids contained only one or two poorly ...
Kulandaiappan Varadaraj, T. J. Pandian
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Structure of the Tilapia (Oreochromis mossambicus) Prolactin I Gene
DNA and Cell Biology, 1992The tilapia (Oreochromis mossambicus) prolactin-I (PRL-I) gene has been cloned and sequenced. Its transcript (3,677 bases long) begins with a guanine and is organized in five exons and four introns like the other known prolactin genes. Analysis of the 1,555-bp 5'-flanking region suggests that pituitary-specific expression of the gene could be regulated
A. C. Poncelet +5 more
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Effects of mercury on serotonin concentration in the brain of tilapia, Oreochromis mossambicus
Neuroscience Letters, 1995In order to know the effect of mercury pollution on the serotonergic system of fish, serotonin concentrations in a discrete brain region of tilapia, Oreochromis mossambicus, were examined. Serotonin concentration was measured using a high performance liquid chromatography system with electrochemical detector.
Li-Hsueh Wang +2 more
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Diel variations in the selected serum immune parameters in Oreochromis mossambicus
Fish & Shellfish Immunology, 2011Almost all metabolic processes in an organism alternate through high and low activity phases with a regular periodicity of nearly 24h. These daily/diel variations are governed by factors such as light, weather conditions, availability of food or predator activity.
C. Binuramesh, R. Dinakaran Michael
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Toxicity of Chlorpyrifos to the Fish Oreochromis mossambicus
Bulletin of Environmental Contamination and Toxicology, 2003J. V. Rao +4 more
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