رکورد قبلیرکورد بعدی

" Mathematical foundations of computer networking "


Document Type : AL
Record Number : 942836
Doc. No : LA5h17r962
Language of Document : English
Main Entry : Dolbeer, Richard A.; Fiedler, Lynwood A.; Rasheed, Hussain
Title & Author : Management of fruit bat and rat populations in the Maldive Islands, Indian Ocean [Article]\ Dolbeer, Richard A.; Fiedler, Lynwood A.; Rasheed, Hussain
Title of Periodical : Proceedings of the Vertebrate Pest Conference
Volume/ Issue Number : 13
Date : 1988
Abstract : The introduced black rat (Rattus rattus) and the endemic giant fruit bat (Pteropus giganteus ariel) are serious depredators of coconuts and fruits, respectively, in the Maldives. Differences in reproductive rate between rats (high) and bats (low) must be considered in implementing control programs. We estimate a rat population can fully recover from an island-wide reduction of 90% in less than 6 months. In contrast, a bat population may require 6 years to recover from a 90% reduction. Crown-baiting of coconut palms with anticoagulant rodenticides is effective in reducing rat damage, but villagers have been-reluctant to adopt recommended baiting programs, allowing rat populations to quickly recover. We substantially reduced bat populations on islands (e.g., from 2.1 bats/ha to 0.7 bats/ha) after a few nights of mist netting and recommend this procedure for managing bat populations. Bat populations should not be reduced below 0.25 bats/ha on islands in the Maldives.
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