Hunger, partial consumption of prey and prey size preference in a carabid beetle
Hunger, partial consumption of prey and prey size preference in a carabid beetle
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步甲甲虫的饥饿、部分猎物消耗和猎物大小偏好
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
D. Werf
中科院分区：
文献类型：
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作者：
G. Ernsting;D. Werf
摘要。以不同大小类别的春尾Orchesella cincta （L.）为猎物，研究了雌性斑鼻蝽（Notiophilus biguttatus F.）对猎物的部分摄食和猎物大小的偏好。进食猎物的时间与猎物的大小不成比例地增加，这主要是由于饱食的结果。在捕食猎物的过程中，捕食者的摄食率会降低，部分原因是随着进食时间的推移，猎物的回报会逐渐减少。猎物的收益递减导致部分消费的假设被驳斥了。甲虫的部分消耗是由于肠道限制；它的出现取决于猎物的大小。4个大小等级的猎物的平均重量接近平均捕获间隔和饥饿估计的预期重量。猎物的选择取决于食物匮乏的程度。讨论了甲虫对猎物的部分消耗、对猎物大小的偏好和猎物的盈利能力与饥饿的关系。
ABSTRACT. 1 Partial consumption of prey and prey size preference were studied in females of the carabid Notiophilus biguttatus F., using different size‐classes of the springtail Orchesella cincta (L.) as prey. 2 Time to ingest a prey increases disproportionately with prey size, mainly as a consequence of satiation. 3 During consumption of a prey the predator's rate of ingestion decreases, partly because of diminishing returns from the prey over feeding time. 4 The hypothesis that the diminishing returns from the prey induce partial consumption was refuted. 5 Partial consumption in the beetle is due to gut limitation; its occurrence depends on prey size. 6 Average weight of prey remains in four prey size classes were close to weights expected from average intercatch intervals and estimates of hunger. 7 Prey choice depends on level of food deprivation. 8 Partial consumption of prey, prey size preference and profitability of prey in relation to hunger of the beetle are discussed.