M C Muralirangan
Articles written in Proceedings – Animal Sciences
Volume 87 Issue 12 December 1978 pp 371-375
Variation in the ovariole number appears significant in providing indices between the total body length of the females and the number of ovarioles. Studies on the post embryonic development of ovaries in acridids being very much restricted, an attempt has been made to correlate the changes in weight of the ovary during post embryonic development, with the stage of development, as well as to establish the correlation coefficient between the weight of the ovary and length of the ovarioles, in
Volume 94 Issue 3 June 1985 pp 283-294
Though acridids are generally polyphagous, they are not indiscriminate feeders as is observed, on the basis of extensive studies on several species of grasshoppers like
In this context, consideration is being given to, (a) physical factors of the host plant such as the thickness of the leaf lamina, the presence of trichomes, the position of the leaf blade, the general colour pattern and the effect of blinding, (b) morphological correlates of the insect such as mandibular modifications in relation to the host, its changes during post-embryonic development and their role in the shift of the host, the foregut armature and its influence on host selection, (c) the influence of chemicals like silica, phagostimulants and deterrents of the hosts on the insect feeding behaviour and (d) the role of sensory structures of the insect in the detection and discrimination of the host.
In addition to the discussion on the general pattern of feeding, the factors responsible for the initiation, continuation and termination of feeding are also analysed.