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M R Rajasekarasetty

Publications and source records attributed to M R Rajasekarasetty.

5 recordsLinked to original sources
PubMed1978

Contributions to the karyology of Euconcocephalus incertus and Allodapia aliena (Tettigoniidae, Orthoptera.

The chromosome complement of two species of Indian Tettigoniids, namely, Euconcocephalus incertus (2n male = 20A + XX) and Allodapia aliena (2n female = 28A + XX) have been reported for the first time. The former species has two pairs of metacentric and two pairs of submetacentric autosomes, and a pair of metacentric sex chromosomes, whereas in the latter species all the chromosomes are telocentric and the sex chromosomes are very long. The probable occurrence of centric fusions, translocations and inversions during the karyotypic evolution of these grasshoppers is discussed.

Animals↗
PubMed1977

Chromosomal repatterning in Acrididae.

Studies on the chromosomes of the acridid grasshoppers Acrida turrita, Poekilocerus pictus and Chrotogonus oxypterus have led the authors to surmise that structural re-arrangements must have played a major role in chromosomal repatterning and karyotypic evolution. Moreover, the telocentricity noticed in the Cryptosacci was evident in the Chasmosacci without the presence of the metacentric chromosomes to account for the reduction in the chromosome number. Possible trends in the evolution are discussed.

Animals↗