GENETIC RELATIONSHIPS BETWEEN STRAINS OF AEDES (STEGOMYIA) AEGYPTI (L.) | BIONATURE

The current research includes information on hybridization and chromosomal analysis of two strains of Aedes (Stegomyia) aegypti, one from Pondicherry (PD) and the other from Pune (PN). Mating compatibility tests using reciprocal crosses, backcrosses, and F2's revealed no reproductive barriers between these two strains; percent egg hatches and sex-ratios in all crosses were normal. Two strains have identical somatic karyotypes, with three homomorphic pairs (2n = 6) of chromosomes. Within strains and interstrain hybrids, meiotic analysis revealed significant asynapsis at metaphase-Istages, indicating the presence of floating inversion polymorphism. The mean chiasmata frequency of the PD and PN strains was 3.350.126 and 3.780.096, respectively, while interstrain hybrids had frequencies ranging from 3330.091 to 3.38-0.123. The two strains of Aedes aegypti looked to be genetically quite similar based on these findings, and so represent conspecific populations of the taxon.

Please see the link :- https://globalpresshub.com/index.php/BN/article/view/271