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2 documents found tagged mass death [X]
  • Title
    Effect of heat wave on the Indian Flying Fox Pteropus giganteus (Mammalia: Chiroptera: Pteropodidae) population from Purulia District of West Bengal, India
    Type
    Journal Article
    Description
    The present study was undertaken to examine the effect of heat wave on the behavior and population count of Indian Flying Fox Pteropus giganteus from a roosting colony occupying a Tamarind tree Tamarindus indica at Simla Village of Purulia District of West Bengal, India during the period from March 2010 to July 2010.  A total population comprising 250 individuals, recorded in March 2010, came down to 80 by June 2010.  Information obtained from local villagers affirmed that the roosting bat colony from the present study location was a century old and had no apparent conflicts with villagers; moreover, it was protected with reverence.  However, soaring day temperatures (with a maximum of up to 480C, recorded during May and June 2010) alongside drought were the major threats that the population faced and mass die-offs caused the population to decline during the hotter months.  Continuous fanning and belly-soaking were common behavioural features recorded during the summer months.  However, death rate due to hyperthermia and dehydration was uncommonly high. 
    Attribution
    Dey Somenath, Roy Utpal Singha, Chattopadhyay Sanjib (2015). Journal of Threatened Taxa 3(7) pp. 7029-7033; doi:10.11609/jott.1905.7029-7033
  • Title
    Weather-induced mass deaths of the Common House Swift Apus affinis in Thengumarahada Village of the Nilgiris, southern India
    Type
    Journal Article
    Description
    Weather influences all living organisms, especially wild animals. In the case of birds, inclement weather conditions may affect them during migration and feeding that could cause mass mortality in the same species or many related species. This paper describes an incidence of mass deaths of the Common House Swift Apus affinis at Thengumarahada Village of Nilgiris, Tamil Nadu, southern India during February 2008. The samples of the dead birds were sent for toxicological and bacteriological examination at Southern Regional Disease Diagnostic Laboratory, Bangalore. Spot post mortems were also conducted by forest veterinarians. Results of the diagnostic analysis revealed that mass mortality might be due to extreme weather conditions leading to acute dehydration, shock and death. The postmortem reports say that the crop and the gastro intestinal tract (GI) were found empty in all the cases, suggesting starvation. We thus conclude that unseasonal heavy rains and non availability of food could have led to hypothermia and starvation of birds over a long period resulting in mass mortality.
    Attribution
    Ramakrishnan B., Sivasubramanian G., Ramkumar K., Ramasubramanian S. (2013). Journal of Threatened Taxa 17(5) pp. 5273-5276; doi:10.11609/JoTT.o3405.5273-6