• Ranjan Advani

      Articles written in Proceedings – Animal Sciences

    • Seasonal fluctuations in the diet composition ofRhinopoma hardwickei in the Rajasthan desert

      Ranjan Advani

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      The small mouse-tailed bat,Rhinopoma hardwickei, collected from various districts of Rajasthan, is primarily an insectivorous species. Orthoptera, Dictyoptera, Lepidoptera, Hymenoptera, Coleoptera and Diptera are preferred in all main four seasons in varying amounts, while Isoptera are consumed in all but the winter season. Occurrence of ground dwelling insects, caterpillars, spiders and water beetles in the stomachs of bats have been discussed in the light of behavioural adaptations of this species. Presence of fur of same bat species in stomachs coincides with its breeding season. Presence of various polyphagous insect pest species of crops in feeding menu of bats shows that this species plays an important role in biological management of harmful insects.

    • Patterns of rodent pest infestation in relation to rainfed and irrigated crop systems in Rajasthan

      Ranjan Advani

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      A field study on the relationship between rodent fauna and crop ecosystem of the Indian Desert and its two main systems was undertaken in 5 villages and 7 dhanis near Jodhpur. Out of twelve rodent species,Meriones hurrianae had a highest relative abundance followed byTatera indica indica, andRattus meltada pallidior. Rodent fauna in the winter irrigated crops and fields was more diversified (11 species) than rainfed summer crops and fields (10 species).M. hurrianae was a predominant species in rainfed crop fields while,T. indica along withM. hurrianae was a codominant species in irrigated winter crops.Rattus gleadowi andVandeleuria oleracea from summer crop fields andMus cervicolor phillipsi in irrigated crop fields, were altogether absent. Relative abundance ofFunambulus pennanti,R. meltada, Mus booduga, Golunda ellioti gujerati andT. indica increased from rainfed to irrigated crop systems, whereas, reverse trend was witnessed forRattus rattus rufescens, M. hurrianae and twoGerbillus spp. (nanus andgleadowi). Occurrence patterns of different rodent species in the crop ecosystem of Indian desert as a whole and in irrigated and rainfed crop systems in particular have been critically discussed keeping in view their ecological, physiological, behavioural and biological patterns.

    • Body weights, sex ratio and population structure of the Western ghat squirrel,Funamhulus tristriatus

      Ranjan Advani A Sujatha

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      Studies were made on 516 specimens of Western ghat squirrel,Funambulus tristriatus collected from cocoa—coconut cropping systems in Western ghat biome of South India. Sex ratios, body weights and age structure factors ofF. Tristriatus are compared with sciurid species in India and other countries.

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