Provisioned Parastrachia japonensis (Hemiptera: Cydnidae) nymphs gain access to food and protection from predators
Provisioned Parastrachia japonensis (Hemiptera: Cydnidae) nymphs gain access to food and protection from predators
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提供的日本 Parastrachia japonensis（半翅目：Cydnidae）若虫获得食物并免受捕食者的侵害
DOI：
10.1006/anbe.2000.1526
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发表时间：
2000
期刊：
影响因子：
2.5
通讯作者：
S. Tojo
中科院分区：
文献类型：
--
作者：
L. Filippi;M. Hironaka;S. Nomakuchi;S. Tojo
雌性盾虫Parastrachia japonensis斯科特逐步提供若虫含有巢的寄主树，Schoepfia jasminodora（Olicaceae：Rosidae：Santales）的核果。大多数的巢是5-15米，从主机树，距离被认为是一个主要的动力发生在这个物种的供应。然而，供应的功能并没有得到很好的理解。我们进行了两个实地实验，以确定是否提供营养重要性，以及它是否提供保护，防止捕食。发展的显着延迟，他们的生存是低的，在没有规定，即使当巢内的地面核果下降，显然是因为质量差的大多数核果。因此，雌性日本松（一种单胎物种）选择性地提供优质核果对于幼若虫获得足够的食物来发育是必要的。此外，即使没有一个女性出席，在巢核果显着降低了早期死亡率在捕食者的存在。版权所有2000动物行为研究协会。
Females of the shield bug Parastrachia japonensis Scott progressively provision nymph-containing nests with drupes of the host tree, Schoepfia jasminodora (Olicaceae: Rosidae: Santales). The majority of nests are 5-15 m from the host tree, a distance thought to have been a major impetus for the occurrence of provisioning in this species. However, the function of provisioning is not well understood. We carried out two field experiments to determine whether provisioning is nutritionally important and whether it affords protection against predation. Development of nymphs was significantly delayed and their survival was low in the absence of provisioning, even when nests were within the area of ground on to which the drupes fell, apparently because of the poor quality of the majority of the drupes. Selective provisioning of good-quality drupes by female P. japonensis, a semelparous species, was thus necessary for young nymphs to obtain enough food for their development. Furthermore, even without a female in attendance, having drupes in the nest significantly reduced early mortality in the presence of a predator. Copyright 2000 The Association for the Study of Animal Behaviour.