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A Comparative Study of Morphology Between F1 Hybrid Magur (Clarias) and their Parents

Md. Mukhlesur Rahman Khan , Ann Cleveland and Md. Fazlul Awal Mollah

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.

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  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


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