EFFECT OF PARENTAL SEX AND BREED ON PHENOTYPICAL EXPRESSION (COLOURATION) IN PROGENY OF POECILIA RETICULATA (GUPPY) FOR ORNAMENTAL PURPOSE
Olayimika, S. O.* and S. L. Lamai
Department of Water Resources, Aquaculture and Fisheries
School of Agriculture and Agricultural Technology
Federal University of Technology, Minna, Nigeria
*e-mail: horseford2000@yahoo.com

Journal of Applied Agricultural Research 2010, 2: 11-19
ISSN 2006-7496
© Agricultural Research Council of Nigeria, 2010
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ABSTRACT

The effect of parental sex and sex combination ratio on breeding and progeny colourations of Poecilia reticulata (Guppy) was studied. Two breeds of P. reticulata, i.e. exotic and wild, were crossed in 60cm x 30cm x 30cm aquaria as indicated; male: female – exotic x exotic, exotic x wild, wild x exotic and wild x wild. The progeny of each cross was observed for various colours in form of patches, pattern and spots. There were significant differences in the number of colors observed in male and female progeny of the crosses. It was observed that the female progeny of male wild X female exotic produced the highest (P<0.05) colourations while male progenies of exotic X exotic crosses produced the highest (P<0.05) number of colours among the female and male offspring, respectively. It was also found that the females were not having the brilliant distinct colours experiential in male. Also, 1 : 3 and wild (male) x exotic (female) produced the highest (P>0.05) number of progeny. It was therefore concluded that the breed of the male parent influenced phenotypic expression in the progeny while sex combination ratio and breed of parents did not influence the number of progeny.

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