SEASONAL-CHANGES IN POPULATIONS OF 3 SYMPATRIC ISOPODS IN A HONG-KONG FOREST
SEASONAL-CHANGES IN POPULATIONS OF 3 SYMPATRIC ISOPODS IN A HONG-KONG FOREST
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DOI：
10.1111/j.1469-7998.1991.tb06030.x
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发表时间：
1991-07-01
影响因子：
2
通讯作者：
LAM, PKS
中科院分区：
文献类型：
--
作者：
MA, HHT;DUDGEON, D;LAM, PKS
关于热带等足类动物种群动态的一般数据，特别是那些栖息在森林中的数据，是稀缺的。 因此，1985年3月至1986年12月期间，在香港一个混交林的两个相邻地点研究了三种同域等足类，Burmoniscus ocellatus（Philosciidae），Formosillo raffaelei和Orodillo maculatus（Armadillidae）的种群动态。 等足类种群密度随物种、地点和季节而变化，平均密度在100-150 m-2之间。 Burmoniscus ocellatus和F. raffaelei每年有一个招募高峰，而O.斑点有两个。 本研究的结果表明，气温是解释种群密度季节性变化的主要因素，而降雨量则有两至三周的时滞，这取决于所研究的物种。 其中，拉氏台绵蚜和O.斑点蜱感染立克次氏体。 本文还讨论了病原菌和其他生物因素对香港等足类动物种群动态的可能影响。
Data on the population dynamics of tropical isopods in general, and those inhabiting forests in particular, are scarce. Consequently, the population dynamics of three sympatric isopods, Burmoniscus ocellatus (Philosciidae), Formosillo raffaelei and Orodillo maculatus (Armadillidae), were studied at two neighbouring sites in a mixed forest in Hong Kong between March 1985 and December 1986. Isopod population densities varied with the species, site and season, with mean densities ranging from 100-150 m-2. Burmoniscus ocellatus and F. raffaelei had a single recruitment peak per year, while O. maculatus had two. Results of the present study revealed that air temperature was the main factor explaining seasonal variations in population density, while rainfall exerted its effect with a two- to three-week time-lag, depending on the species studied. Approximately 20% of Formosillo raffaelei and O. maculatus sampled were found infected by Rickettsiella bacteria. The possible influence of pathogens, and other biotic factors, on the dynamics of the Hong Kong isopod populations was discussed.