Habitat selection, distribution, and abundance of Parastrachia japonensis (Hemiptera: Cydnidae) and its host tree
Habitat selection, distribution, and abundance of Parastrachia japonensis (Hemiptera: Cydnidae) and its host tree
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Parastrachia japonensis（半翅目：Cydnidae）及其寄主树的栖息地选择、分布和丰度
DOI：
10.1093/aesa/88.4.456
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发表时间：
1995
影响因子：
2.3
通讯作者：
S. Tojo
中科院分区：
文献类型：
--
作者：
Lisa Filippi;S. Nomakuchi;S. Tojo
群居盾叶甲及其寄主乔木的分布和丰度。(Rosidae：Santales)，在日本佐贺的天然次生林Hinokuma山县公园进行了调查。日本大小蜂和寄主树的亚群分布在研究地点，每个亚群在10米内至少有1棵结果寄主树。亚群的昆虫从15只到10,000只不等。此外，我们还确定了日本对虾用来区分栖息地的环境属性，以及这些特征是如何影响其丰度的。资源可获得性、周围灌木(聚集)、遮荫、凋落物的数量和质量(用于筑巢)以及坡地面积(雨季用于排水)都是决定日本对虾生境适宜性的显著因素。其中，与丰度有关的唯一最具决定性的属性是累积的粮食资源可获得性。此外，在筑巢过程中重要的两个属性，特别是叶片凋落物质量和坡度，也直接影响到日本对虾的丰度。显然，在累积资源可获得性也很丰富的地区，一致的环境条件，特别是良好的环境条件，有利于形成大的亚种群。这些发现有助于解释为什么日本对虾的栖息地如此严格地局限于这里调查的各种早期森林类型。
Distribution and abundance of the gregarious shield bug, Parastrachia japonensis Scott, and its host tree, Schoepfia jasminodora Sieb et Zucc. (Rosidae: Santales), were investigated at Hinokuma Mountain Prefectural Park, a natural secondary forest in Saga, Japan. Subpopulations of P japonensis and host trees were scattered throughout the study site, and each subpopulation invariably had at least 1 fruit-bearing host tree within 10 m. Subpopulations ranged from just 15 to > 10,000 insects. In addition, we determined the environmental attributes used by P. japonensis to discriminate habitat and how those characters influence its abundance. Resource availability, surrounding bush (for aggregating), dark shade, leaf litter quantity and quality (for nesting), and a sloping area (for drainage during rainy season) were all prominent factors in determining habitat suitability to P. japonensis . Among these, the single most determinant attribute with regard to abundance was the cumulative food resource availability. Further, 2 attributes that are important during nesting, specifically, leaf litter quality and slope, also directly affected abundance of P. japonensis . Apparently, consistent, particularly good environmental conditions in an area where the cumulative resource availability is also abundant favor formation of large subpopulations. The findings help explain why the habitat of P. japonensis is so strictly limited to the type of diverse, early stage forest investigated here.