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8 documents found tagged insects [X]
  • Title
    A case study of butterfly road kills from Anaikatty Hills, Western Ghats, Tamil Nadu, India
    Type
    Journal Article
    Description
     Anaikatty Hills of the Western Ghats in Tamil Nadu witness the annual spectacle of mass movement of lakhs of butterflies.  The present paper examines the impact of vehicular traffic on this ‘butterfly migration’ through a survey of butterfly mortality along a road stretch in Anaikatty Hills.  A high rate of mortality due to road traffic was observed during the mass movement of butterflies.  One-hundred-and-thirty-five butterfly road kills belonging to three families, nine genera and 12 species were recorded during the study.  The proportion of nymphalid butterflies among the road kills (70%) was very high compared to their respective share in the background population (39%), indicating a higher road mortality risk for nymphalids.  The conservation significance of the road traffic impact on butterfly assemblage and management options are discussed. 
    Attribution
    Sony R. K., Arun P. R. (2015). Journal of Threatened Taxa 14(7) pp. 8154-8158; doi:10.11609/jott.1743.7.14.8154-8158
  • Title
    Roost and diet selection by Southern Spotted Owlet Athene brama brama (Temminck, 1821) in the Cauvery Delta of Nagapattinam District, southern India
    Type
    Journal Article
    Description
    The Spotted Owlet Athene brama is the commonest among the 62 species of owls of India and also a widely distributed bio-control agent of agricultural pests in India. We studied the roost site selection and diet composition of the Southern Spotted Owlet A.b. brama in the Cauvery Delta in southern India during 2007-08. The roost selection evaluated based on roost site characteristics observed from 22 roost sites revealed that the owlets preferred to roost closer to human habitation than in agricultural fields, with all the roosts found among trees. Albizia saman (Rain Tree) was the most commonly used roost tree species. Tree species with 20-30 m height and 1-3 m gbh were most preferred for roosting due to the presence of a greater number of branches. Roost species and size class selection appeared to depend on availability of suitable locations with better protection from weather and concealment to avoid disturbance from humans and other birds. Diet composition examined through analysis of 55 regurgitated pellets revealed that undigested food items from insects constituted the bulk of the owls diet (57%) followed by mammals (rodents) (24.4%), reptiles (7.8%) and birds (7.3%). However, it is argued that mammals in the form of digestible parts could have contributed more to the diet of the owlet than any other taxa. Higher consumption of rodents and insects is discussed in the light of reducing agricultural pests; adequate roosting sites (mature trees) and creating awareness among the local community about the role of Spotted Owlets will improve their population and help control agricultural pests more effectively.
    Attribution
    Vanitha V., Kumar C., Thiyagesan K. (2014). Journal of Threatened Taxa 6(6) pp. 5845-5850; doi:10.11609/JoTT.o3805.5845-50
  • Title
    Comparison of insect biodiversity between organic and conventional plantations in Kodagu, Karnataka, India
    Type
    Journal Article
    Description
    We undertook a comparative analysis of ground insects and fruit eating butterflies on 29 different plantations in Kodagu District of Karnataka which is one of the rich biodiversity zones of the Western Ghats. These included organic and conventional coffee and cardamom plantations using different levels of chemical fertilizers and pesticides. A total number of 457 ground insect species were collected using pit-fall traps which included 92 species of ants and 123 species of beetles, among other insect taxa that we measured. Similarly, 25 species of butterflies belonging to the family Nymphalidae were collected using bait traps. We found a clear negative effect on the ground insect species diversity (Shannon index) and evenness (Shannon evenness index) in pesticide treated plantations as compared to the organic plantations. A similar negative effect was observed for butterfly diversity in plantations using pesticides. Our results corroborate the value of organic plantations in supporting higher levels of biodiversity.
    Attribution
    Mone S., Kusha K.M., Jathanna D., Ali M., Goel A. (2014). Journal of Threatened Taxa 9(6) pp. 6186-6194; doi:10.11609/JoTT.o3778.6186-94
  • Title
    The butterfly community of an urban wetland system - a case study of Oussudu Bird Sanctuary, Puducherry, India
    Type
    Journal Article
    Description
    In a study on the butterfly community of the Oussudu (Ousteri) Bird Sanctuary and its environs at Puducherry, a total of 63 butterfly species belonging to 47 genera under five families were recorded which included two endemics and three Schedule I species. Nymphalidae was the most diverse and abundant butterfly family of the area followed by Pieridae. The paper also discusses the abundance and species assemblage pattern in the local butterfly fauna along with their legal/protection status and distribution patterns in the study area.
    Attribution
    Murugesan M., Arun P.R., Prusty B.A.K. (2013). Journal of Threatened Taxa 12(5) pp. 4672-4678; doi:10.11609/JoTT.o3056.4672-8
  • Title
    Strategic planning for invertebrate species conservation - how effective is it?
    Type
    Journal Article
    Description
    Activities for invertebrate conservation range from single species programmes to those spanning habitats or landscapes, but at any scale are often largely isolated and not integrated effectively with other efforts. Problems of promoting invertebrate conservation and synergies by effective cooperation are discussed. The rationale of species-level conservation is outlined briefly, with suggestions of how some of the apparent limitations of this approach may be countered in ways that benefit a greater variety of invertebrate life. This essay is intended to promote debate on some of the complex issues involved, and implies the need for careful and well-considered integration of individual conservation tactics into enhanced strategies to increase the benefits from the very limited resources devoted to invertebrate conservation.
    Attribution
    New T.R. (2011). Journal of Threatened Taxa 9(3) pp. 2033-2044; doi:10.11609/JoTT.o2850.2033-44
  • Title
    An insight into the ethnozoology of Panch Pargana area of Jharkand, India
    Type
    Journal Article
    Description
    Panch Pargana area of Jharkhand stretches from the southeastern of Ranchi District to some parts of the districts of West Singhbhum, Saraikela and borders of West Bengal. The ethnic groups residing in this area include the Munda, Oraon, Bedia and Santhal. Many insects, molluscs, fishes etc. and their products are used by certain sections of these people for therapy and prophylaxis, individually or combined with some herbs. In this study specimens of such medically useful animals have been collected after surveying remote tribal areas and ‘village markets’ called ‘hats’. Personal views of Vaidyas, Pahans, knowledgeable elderly persons and patients who have been cured were documented through questionnaire. More than eight such ethnozoological examples, seven combinants, herbs hosting insects, and a fungus have been identified in the present study.
    Attribution
    Kumari B., Kumar S. (2009). Journal of Threatened Taxa 8(1) pp. 441-443; doi:10.11609/JoTT.o1717.441-3
  • Title
    Aquatic Insects for Monitoring Freshwater Ecosystems-A Methodology Manual
    Type
    Report
    Description
    A methodology manual for biomonitoring of freshwater ecosystems.
  • Title
    Aquatic Insects of India-A Field Guide
    Type
    Report
    Description
    Field guide to common aquatic macroinvertebrates useful for biomonitoring.