Genomic changes in speciation of the family Chironomidae, Diptera
Journal Title: Journal of BioScience and Biotechnology - Year 2015, Vol 4, Issue 1
Abstract
The mode of speciation adopted by a species or group of related species of animals (insects) is clearly determined to a certain extent by the architecture of their genetic system. Chromosome rearrangements, the localization and appearance of the heterochromatin as well as the reproductive relations in sympatric, allopathric speciation and intrograssion process of different species of Chironomidae family are considered. A high chromosome polymorphism and changes in the constitutive heterochromatin are shown as predominant mechanism in the phyletic evolution of some species. Based on an analysis of inversions in different chromosome arms, a chromosome evolution in the "plumosus" group (genus Chironomus) is traced. It was found that the floating inversions in an initial standard karyotype became fixed in a derived karyotype and underlined that the heterochromatin is a dynamic element in the speciation of family Chironomidae. In addition, hybridization tests revealed that pre - and postmating isolating mechanisms were operating in process of formation in different sibling species. It is concluded that the species with overlapping ranges are characterized by more complex chromosome changes, while in species with allopatric speciation there are less chromosome rearrangements. In this case, the distance between the populations is a very important factor as well.
Authors and Affiliations
MICHAILOVA MICHAILOVA
Keywords
Related Articles
- EP ID EP137523
- DOI -
- Views 97
- Downloads 0
Interaction of Some Antisickling Agents with Human Erythrocytes Calcium Pump
Sickle cell disease is a red blood cells disorder, which affects millions of people in the world. One of its clinical manifestations is cation fluxes. Although the antisickling potentials of hydroxyurea (HU), Cajanus caj...
Enhanced heterologous gene expression in diploid cells of methylotrophic yeast Hansenula (Ogataea) polymorpha
The expression of bacterial gusA gene encoding for E. coli enzyme β-glucuronidase in haploid and diploid cells of methylotrophic yeast Hansenula (Ogataea) polymorpha was studied. Haploid strains were transformed wi...
Effect of natural bioflavonoid on in vitro ruminal microbiota activity in sheep rumen liquor
A pure bioflavonoid (rutin) was extracted from Eucalyptus globulus leaves and identified by Thin Layer Chromatography using purified flavonoids moieties as a control. The purified flavonoid was used in in vitro gas produ...
Biodiversity of woody species in large-leaved lime sits in Noshahr forests (Iran)
Species diversity is one of the most important indices used for evaluating the sustainability of forest. This study aims to characterize the large-leaved lime stand and to identify and compare the tree species dive...
Antiviral activity of sukomycin against Potato Virus Y and Tomato Mosaic Virus
Potato Virus Y (PVY) and Tomato Mosaic Virus (ToMV) are one of the most important plant viruses that strongly influence the quality and quantity of vegetable production and cause substantial losses to farmers. The most c...