Long-term Dynamics of Phytophagous Lady Beetle Po pula tions under Different Clima te Conditions in Sumatra and Java, Indonesia
Long-term Dynamics of Phytophagous Lady Beetle Po pula tions under Different Clima te Conditions in Sumatra and Java, Indonesia
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印度尼西亚苏门答腊岛和爪哇岛不同气候条件下植食性瓢虫种群的长期动态
DOI：
10.3759/tropics.10.427
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发表时间：
2008
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通讯作者：
Koji Nakamura
中科院分区：
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作者：
Koji Nakamura
自1990年以来，我们研究了食草瓢虫Epilachna vigintioctopunctata、E. enneasticta和Epilachna sp. 3（aff.（鞘翅目：姬小蜂亚科），分布于印度尼西亚的巴塘、苏卡拉米（西苏门答腊）、博戈尔（西爪哇）和普尔沃达迪（东爪哇）。这些地点的气候条件明显不同，例如，巴塘属于典型的热带雨林气候，没有明显的干湿季节交替，而普尔沃达迪的旱季长达6-7个月。我们每隔3-7天进行一次普查，包括连续9年的甲虫标记重捕和生命表的构建，以澄清种群丰度和死亡率的季节性变化。在大多数种群中，成虫数量变化很大，每隔6-12个月就会出现高峰。它们的增加或减少是渐进的，在3-5个月内进行。即使在巴塘、苏卡拉米和博戈尔降雨量充足的条件下，产卵强度、随后的未成熟阶段的数量以及成虫羽化也经常在固定的时间间隔内显示出离散的高峰。这些“世代周期”在人口增长阶段尤为明显。降雨量的季节变化与甲虫种群数量的季节变化之间没有简单的关系。并讨论了1994年和1997-1998年厄尔尼诺引起的严重干旱对东亚飞蝗种群的影响，以及相邻研究点种群变化趋势的同步程度。
Since 1990 we have studied population dynamics of the phytophagous lady beetles, Epilachna vigintioctopunctata, E. enneasticta and Epilachna sp. 3 (aff. emarginata), (Coleoptera: Epilachninae) in Padang, Sukarami (West Sumatra), Bogor (West Java) and Purwodadi (East Java), Indonesia. These sites have distinctly different climate conditions, e.g. Padang has a typical tropical rainforest climate without a clear alternation of wet and dry seasons, while Purwodadi has a strong dry season of 6-7 months. We have conducted censuses at 3-7 day intervals, including mark-recapture of beetles and construction of life tables for up to 9 consecutive years in order to clarify the seasonal change in abundance and mortality of the populations. In most populations the adult number changed greatly with the formation of high peaks from time to time at intervals of 6-12 months. Their increase or decrease was gradual, progressing over 3-5 months. Even under conditions with sufficient amount of rainfall in Padang, Sukarami and Bogor, oviposition intensity, number of the following immature stages and, as a result, adult emergence frequently showed discrete peaks at a fixed interval. These "generation cycles" were especially clear during the phase of population increase. There was no simple relationship between the seasonal change in rainfall and that of the beetle populations. We also discussed the impacts of the strong droughts in 1994 and 1997-1998 caused by EI Niiio, and the degree of synchronization in the trends of the populations among the adjacent study sites.
Nakamura, K. 等人：“爪哇地区降雨量的区域差异和季节性，特别是茂物”热带地区。
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影响因子：
1.4
作者：
Nakagawa, M;Tanaka, K;Seng, LH
通讯作者：
Seng, LH
Inoue,T.：“不可预测变化的热带环境中动物的种群动态。”
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