R V Krishnamoorthy
Articles written in Proceedings – Animal Sciences
Volume 87 Issue 3 March 1978 pp 17-22
Volume 87 Issue 3 March 1978 pp 23-25
Distribution pattern of 6 genera of earthworms in Bangalore has shown that one species was found dominant in a given locality. Causal factors for such niche differentiation might be seen in the nature of available organic matter in the area. However, the population density of the species is not at all related to the organic matter of the soil.
Volume 88 Issue 5 October 1979 pp 329-337
Coelomocytes and haemocytes of 5 local species of earthworms were studied. The structure of different cells is the same in different species. The total and differential account of the haemocytes showed some species specificity.
Volume 88 Issue 5 October 1979 pp 377-383
Geotactic responses of male freshwater field crab,
Volume 88 Issue 6 December 1979 pp 391-396
The influence of different concentrations of SevinR (1-naphthyl-
Volume 88 Issue 6 December 1979 pp 397-409
Variations in fat content, glycogen and calorific values for meat content were studied in
Volume 89 Issue 4 July 1980 pp 351-357
Intra- and interspecific bisexual encounters between
Volume 91 Issue 3 May 1982 pp 317-322
Non-aggressive social behaviour rhythms of
Volume 92 Issue 3 May 1983 pp 185-191
The aggressive behaviour rhythm of
Volume 92 Issue 4 July 1983 pp 277-284
Male adult paddy field crabs (
Volume 95 Issue 3 June 1986 pp 341-351
Biochemical analyses and auxin and cytokinin bioassays were performed to test the biological activity of wormcasts. Both cellulose paper pulp and soil casts of
Volume 97 Issue 4 July 1988 pp 355-362
Woodlands in karnataka differ with respect to earthworm species and their densities.
Volume 98 Issue 6 November 1989 pp 431-445
Forty one sites in mango gardens located in different districts of southern Karnataka were selected for the study during September 1984. Rate of surface cast production, earthworm density and species composition of each site were recorded and compared in relation to the soil moisture, pH, temperature, organic matter and soil type of each site. Only 19 out of the 41 sites examined showed surface casting. Rate of surface cast production is dependent on soil, pH, temperature, soil type and organic matter content. The bulk density of the soil established a direct linear correlation, and the field capacity of soil, a perfect U-shaped (parabolic) relationship with the rate of surface cast production. Sandy loams had greater species diversity as well as population density than the clays. Worms were not found in heavy sands and acid soils. Positive correlations were obtained between organic matter and species diversity or density; other factors were poorly correlated. A positive correlation between the cast output and the relaxed length of the worm was obtained. It is discussed that the field capacity and bulk density of soils are the determining factors for variations in surface cast production.
Volume 99 Issue 6 November 1990 pp 509-518
The casts of earthworms contain greater amounts of extractable inorganic phosphate than underlying soils. Casts contain higher phosphatase activity than that occurs in undigested soil, which increases the inorganic phosphorus released by mineralization. Of the 4 species compared,