K G Sivaramakrishnan
Articles written in Proceedings – Animal Sciences
Volume 94 Issue 3 June 1985 pp 351-357
Behavioural strategies of emergence, swarming, mating and oviposition in mayflies are reviewed in the light of available literature.
Volume 96 Issue 3 May 1987 pp 305-309
The relative importance of organic detritus and algae in promoting the growth and fecundity of some species of Baetidae is assessed on the basis of the nutritional differences among them. Taking into consideration the ephemeral aspect of adult life, an understanding of the relative importance of such substances as carbohydrate, protein and lipid in relation to their growth and fecundity is also examined.
Volume 96 Issue 5 September 1987 pp 637-646
Previous work on the importance of egg ultrastructure to the taxonomic and phylogenetic studies of Ephemeroptera with special emphasis on the two schistonotan families, Leptophlebiidae and Heptageniidae is reviewed. The chorionic sculpturings, the types of micropyles and attachment structures of the eggs of south Indian mayfly species belonging to 8 genera of Leptophlebiidae and 3 genera of Heptageniidae have been studied through scanning electron microscope.
The present study confirms the earlier observations that the Leptophlebiidae are most certainly of enough distant relationship with the Heptageniidae to warrent inclusion in separate superfamilies viz Leptophlebioidea and Baetoidea. Whereas the structural modifications on the eggs are significant in contributing to the taxonomy of both the families at the generic level, submicroscopic examinations of chorionic structures provide data for the separation of different species and species complexes in Leptophlebiidae.
Volume 99 Issue 3 May 1990 pp 267-276
Problems of systematics and speciation in the context of recent advances in the field of insect-plant interaction are highlighted with reference to the comparative study of speciation in relation to the population structure and genetic architecture of living organisms. The role of insect-plant interaction in the biosystematic study of some aquatic weevils, aphids and archid pollinators are also discussed besides sympatric speciation in some phytophagous insects.