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Flexible use of patch marks in an insect predator: effect of sex, hunger state, and patch quality OAK
Nakashima, Yoshitaka; Teshiba, Mayumi; Hirose, Yoshimi; 仲島, 義貴.
1. Patch marks that allow the subsequent avoidance of marked areas may be used by small animals to increase foraging efficiency. This study is the first to demonstrate the presence of a patch-marking system in insect predators. Furthermore, the marking system is found only in females, and factors such as hunger state and patch quality play a key role in determining whether a female will re-investigate a self-marked patch. 2. Females of the insect predator Orius sauteri avoided areas where the female itself had searched previously but did not avoid areas searched by conspecific females when deprived of prey for 24 h. There was no evidence that males use such a patch-marking system, indicating the presence of a sex difference in patch-mark use. 3. Females...
Palavras-chave: Anthocoridae; Foraging efficiency; Patch mark; Patch time; Physiological state; Prey availability; Sex difference.
Ano: 2002 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/805
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