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Articles by Mumtaz Jabeen
Total Records ( 2 ) for Mumtaz Jabeen
  Mumtaz Jabeen and Mohammad Afzal
  Transferrin (TF) in vertebrates makes a reliable genetic marker system demonstrating extensive polymorphism and heterogeneity at the TF locus in fish species also. The present investigation was conducted on two Indian fish species viz., Channa punctatus and Channa gachua; to explore the quantitative expression of transferrins, where for the evaluation densitometric analysis of electrophoretically separated serum TF phenotypes was done. Distinct two peaks for heterozygous TF and single peak for homozygous TF was observed in densitographs. There was noticeable incidence of higher densitometric volumes of heterozygous TFs in comparison with the homozygous TFs in both the fish species. Statistically, considering the Percent Coefficient of Variation (%CoV) of the densitometric data, a small range of ~1.17-3.72% was calculated within each TF phenotype in both the populations whereas 17.79 and 24.33% of total divergence was accounted in C. punctatus and C. gachua, respectively. Further, the resulting significant value (p<0.05) after z-score analysis deduced that irrespective of variations TF phenotypes are expressed quantitatively as per the body requirement when the samples are randomly and normally distributed. This study demonstrates some species-specific electrophoretic and densitometric pattern of TFs and represents a promising and simple biochemical tool for discerning the closely related species.
  Riaz Ahmad , Rakesh B. Pandey , S. Hasan Arif , Nikhat Nabi , Mumtaz Jabeen and Absar-ul Hasnain
  SDS-PAGE profiles of soluble eye lens nuclei proteins of walking catfish, Clarias batrachus (Linn.) revealed the existence of eight distinct polymorphs along the western region of Uttar Pradesh, India. On the basis of their molecular weights (Mr) and isoelectric points (pI), the polypeptides were identified as β- and γ-crystallins. The crystallins characteristically focused between pI values of 5.2 to 8.7 and had molecular weights of 19 to 34 kDa. Statistical analysis of polymorphs within random catches indicated a latitudinal pattern of fish distribution. We propose that the observed distribution pattern is the consequence of limited terrestrial migration of C. batrachus. Nocturnal migration to nearby water bodies is its outstanding characteristic as an air-breathing and walking silurid, specifically during rainy season. Population substructure is genetically recognizable into three zones: upper, central and lower; out of which the latter two are most inhabited. F-value according to ANOVA was 1.095 indicating that at different locations, polymorphs existed in differing frequencies (p = 0.375). Present results thus suggest that with the exception of the flood-prone locations, selection pressures which have limited the output of this threatened catfish have not disturbed the homogeneity of population structure in the investigated region.
 
 
 
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