Results 101 to 110 of about 717 (146)

Resistance of the African (Clarias gariepinus) and the Asian catfish (Clarias batrachus) to channel catfish virus

Aquaculture, 1988
Abstract Resistance of Dutch stocks of African (Clarias gariepinus) and Asian catfish (Clarias batrachus) to channel catfish virus (CCV) was tested. Replicate groups of catfish larvae were challenged by immersion in water containing 105, 104 and 103 TCID50 (50% tissue culture infective dose endpoint)/ml of CCV.
Boon, J.H., McDowell, T., Hedrick, R.P.
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Semen collection in catfish species, with particular emphasis on the African catfish.

CABI Reviews, 2003
Abstract This minireview describes the current knowledge on semen collection in captive male catfish. It is well known that when some catfish species, such as the African catfish ( Clarias gariepinus and Heterobranchus longifilis ), channel catfish ( Ictalurus punctatus
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Stress in African catfish (Clarias gariepinus) following overland transportation

Fish Physiology and Biochemistry, 2013
Of the many stressors in aquaculture, transportation of fish has remained poorly studied. The objective of this study was therefore to assess the effects of a (simulated) commercial transportation on stress physiology of market-size African catfish (Clarias gariepinus). Catfish weighing approximately 1.25 kg were returned to the farm after 3 h of truck-
Manuel, R., Boerrigter, J., Roques, J., van der Heul, J.W., van den Bos, R., Flik, G., van de Vis, J.W.   +6 more
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Growth, feed utilization and survival of African catfish,

Journal of Aquatic Sciences, 2001
African Catfish, Clarias gariepinus fingerlings (mean weight 3.76 ± 0.13 g) were reared at 9 salinity levels 0.042, 0.3, 0.5, 1.0, 5.0, 10.0, 15.0, 20.0, and 25.0 mgl-1 over a period of 20 weeks. At the end of 20 weeks period the mean weight gain, 15.56 g, (428.7%) of fish reared in 0.042 mg-1 was significantly (P > 0.05) higher than those recorded in ...
ODO, G. E., INYANG, N. M.
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Salinity influence on the early stages of the African catfish

Aquaculture International, 1998
Experiments were conducted to determine the effect of various incubation salinities on the hatching and survival of eggs and hatched fry respectively of the African catfish (Clarias gariepinus). The optimal salinity for the hatching of the eggs ranged from 0–5‰. Above 5‰, hatching was significantly low and no hatching occurred at 8‰ incubation salinity.
A.J. Gbulubo, E.S. Erondu
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North African Catfish Clarias gariepinus (Burchell)

2017
Fast expansion of aquaculture in China largely relies on the introduction and use of non-native species. However, the introduction and use of non-native species may have negative impacts on local ecosystems and societies. Clarias gariepinus has been widely farmed in China after introduced in 1980 from Africa.
Dangen Gu, Yinchang Hu, Hui Wei, Yunjie Zhu, Xidong Mu, Du Luo, Meng Xu, Yexin Yang   +7 more
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Testosterone Accelerates the Development of the Catfish GnRH System in the Brain of Immature African Catfish (Clarias gariepinus)

General and Comparative Endocrinology, 1998
The effects of two endogenous steroids on the maturation of the catfish GnRH and the chicken GnRH-II system in the African catfish were investigated. Immature fish (2 weeks of age, which is before sexual differentiation; thus male and female genotypes present) were fed with food pellets containing either testosterone (T), 11beta-hydroxyandrostenedione (
E A, Dubois, M A, Florijn, M A, Zandbergen, J, Peute, H J, Goos   +4 more
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PERFORMANCE OF LOCALLY FORMULATED FEEDS FOR REARING OF AFRICAN CATFISH IN TANZANIA

2014
Fisheries is an important food production sub-sector, providing almost 20% of the world’s protein supply; however, the trend in fish production from capture fisheries has reached its limits due to overfishing. A study wasconducted to evaluate the performance of two locally formulated feeds as possible replacements for an imported costly commercial feed
Musiba, Mj, Ngupula, GW, Kashindye, BB, Elison, M, Shoko, AP, Ndikumana, J, Zziwa, E, Katunzi, EFB   +7 more
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Basic steps in the production of the African catfish seed

2021
A typical production cycle for African catfish farming begins with a selection of fingerlings or juvenile fish of good quality for brood stock development. Fish are selected from a family or grow out stock basing on records of the origin,age, strain and performance history of the parents or from the wild in this brochure, we explain the basic steps and
Ondhoro, C.C., Mwanja, T.M.
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Phylogeography of the African catfish,Chrysichthys maurus(Valenciennes, 1839)

African Journal of Aquatic Science, 2003
Polymorphism at 19 allozyme loci was studied in 227 individuals of the catfish, Chrysichthys maurus (Valenciennes, 1839), collected from ten populations representing nine different river basins in west Africa. Eleven of the loci studied were polymorphic.
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