Md. Mukhlesur Rahman Khan
Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
Ann Cleveland
Department of Biological Science, Northern Arizona University, USA
Md. Fazlul Awal Mollah
Department of Fisheries Biology and Genetics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
ABSTRACT
Profound differences were detected in many characters between F1 hybrids and their parents. Among the 17 morphometric characters, dorsal fin length and anal fin length of fishes were significantly shorter (PDFL = 0.03, PAFL = 0.01) in the F1 hybrids than in their maternal parent. Other 15 morphometric characters were significantly longer in the F1 hybrids than in their maternal parent. Among 7 meristic characters, for branchiostegal rays, dorsal fin rays and anal fin rays, all groups were differed significantly (P<0.05) from one another with the F1 hybrid being intermediate in count for each character. The F1 hybrids resembled C. gariepinus in three morphometric characters relating to the skull head length - (HL), PHL = 0.99; head width- (HW), PHW = 0.92; snout length-SNL, PSNL = 0.67). So, F1 hybrid demonstrated paternal inheritance. The occipital structure of hybrids was an intermediate form of the parents, which might represents phenotypic plasticity, or genetic factors might have influenced the developmental structure. All of these characters considered the F1 hybrid an intermediate form which can be confirmed by the study of genetic characters.
PDF References Citation
How to cite this article
Md. Mukhlesur Rahman Khan, Ann Cleveland and Md. Fazlul Awal Mollah, 2002. A Comparative Study of Morphology Between F1 Hybrid Magur (Clarias) and their Parents. Journal of Biological Sciences, 2: 699-702.
DOI: 10.3923/jbs.2002.699.702
URL: https://scialert.net/abstract/?doi=jbs.2002.699.702
DOI: 10.3923/jbs.2002.699.702
URL: https://scialert.net/abstract/?doi=jbs.2002.699.702
REFERENCES
- Khan, M.M.R., M.F.A. Mollah and G.U. Ahmed, 2000. Mass production of hybrid magur and its culture potential in Bangladesh. Aquacult. Res., 31: 467-472.
CrossRef - Kruskal, W.H. and W.A. Wallis, 1952. Use of ranks in one-criterion variance analysis. J. Am. Stat. Assoc., 47: 583-621.
CrossRefDirect Link - Legendre, M., G.G. Teugels, C. Cauty and B. Jalabert, 1992. A comparative study on morphology, growth rate and reproduction of Clarias gariepinus (Burchell, 1822), Heteropneustes longifilis Valencinnes, 1840 and their reciprocal hybrids (Pisces, Clariidae). J. Fish. Biol., 40: 59-79.
Direct Link - Schreck, C.B. and P.B. Moyle, 1990. Methods for Fish Biology. 1st Edn., American Fisheries Society, United States, Pages: 704.
CrossRefDirect Link - Teugels, G.G., 1984. The nomenclature of African Clarias species used in aquaculture. Aquacultural, 38: 373-374.
CrossRefDirect Link - Verreth, J., E.H. Eding, G.R.M. Rao, F. Huskens and H. Segner, 1993. A review of feeding practices, growth and nutritional physiology in larvae of the catfishes Clarias gariepinus and Clarias batrachus. J. World Aquac. Soc., 24: 135-144.
CrossRef