Wodzicki: Ecology of the Polynesian Rat
نویسنده
چکیده
Extensive trapping shows that the Polynesian rat (Rattus e. ¤X1l/alls (Peale) is the only rodent present in the Tokelau Islands and that it is responsible for damage to .-;oconuts. Green coconuts 5-25 em. long are gnawed on the palms and subsequently fall to the ground and disintegrate. Damage was assessed by counting damaged and undamaged nuts in quadrats on various islets of the Nukunonu and Atafu atolls. The numbers of rats on these islets were assessed by using the capture-mark-recapture method. It was found that mature, untended and overgto\vn islets showed severe damage but had a low rat population. On the other hand. equally mature but relatively wcll.tended groves carried a much heavier rat population but showed no damage to coconuts.
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تاریخ انتشار 2004