• S Keshava Bhat

      Articles written in Proceedings – Animal Sciences

    • Population of the Western Ghats squirrel,Funambulus tristriatus Waterhouse in South India

      S Keshava Bhat D N Mathew

      More Details Abstract Fulltext PDF

      A population of the Western Ghats squirrel,Funamhulus tristriatus Waterhouse, was studied for some group attributes. The density ranged between 2 and 4 individuals/ha, the pattern being irregular. The rate of persistence was very low and nearly 83 % of the squirrels marked and released disappeared from the population within 12 months. The sex ratio significantly favoured males. Males were heavier than females, but the difference was not statistically significant.

    • Population structure and breeding season inRattus rattus wroughtoni Hinton

      S Keshava Bhat A Sujatha R Advani A S Sukumaran

      More Details Abstract Fulltext PDF

      Observations were made from July 1982 to June 1985 on certain aspects of the population ecology ofRattus rattus wroughtoni Hinton. Altogether 2639 specimens of rats were collected. The male to female ratio was 0·87:1·0. Male rats were significantly heavier and bigger than the females. Pregnant female rats were encountered throughout the year with two peaks, one during early summer (February–March) and the other during monsoon (July–August). The incidence of pregnancy was lowest in May when the day temperature was maximum. The litter size ranged from 1–8. The pre-implantation loss was 0·75 ovum per female.

  •  

© 2021-2022 Indian Academy of Sciences, Bengaluru.