Six-year population dynamics of seven passalid species in a humid tropical rainforest in Borneo

IF 0.7 4区 农林科学 Q4 ENTOMOLOGY Entomological Science Pub Date : 2021-10-06 DOI:10.1111/ens.12490
Hiroto Ueno, Kunio Araya, Paulus Meleng, Clement Het Kaliang, Shoko Sakai, Keiko Kishimoto-Yamada, Masahiro Kon, Takao Itioka, Akiko Satake
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引用次数: 1

Abstract

Phenology of insect abundance in less seasonal tropical regions is well recognized. Even in Bornean tropical forests in Malaysia, where there is no distinct dry season, there are insect species that behave as if their environments were highly seasonal. How such seasonal dynamics are shaped and what factors determine the seasonality remains largely unresolved. To elucidate the mechanisms underlying population dynamics in relatively stable tropical environments, we classified monthly samples collected with light traps at Lambir Hills National Park, Malaysia, and generated long-term time-series data for the family Passalidae (Coleoptera: Scarabaeoidea), which spend nearly their entire life cycle within or beneath decayed wood. Analyses of our data (20 species and 768 individuals) revealed that there were clear abundance peaks in April and October at the community level. We analyzed the data together with climate data using a nonlinear time-series analysis called convergent cross mapping. The causal relationship between adult population dynamics of the dominant species (Leptaulax planus) and temperature was detected, which shows that the population dynamics of L. planus are driven by cool temperatures approximately 1 month before emergence. Our study indicates that even in perpetually wet tropical rainforests in Southeast Asia, insect population dynamics respond to climatic factors and show seasonal population dynamics.

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婆罗洲潮湿热带雨林中七种帕萨利德物种的六年种群动态
在季节性较低的热带地区,昆虫丰度的表型是公认的。即使在马来西亚的婆罗洲热带森林中,那里没有明显的旱季,也有一些昆虫物种表现得好像它们的环境是高度季节性的。这种季节性动态是如何形成的,以及是什么因素决定了季节性,在很大程度上仍未解决。为了阐明相对稳定的热带环境中种群动态的潜在机制,我们对在马来西亚兰比尔山国家公园用光阱收集的月度样本进行了分类,并生成了帕萨里科(鞘翅目:Scarabaeoidea)的长期时间序列数据,该科几乎整个生命周期都在腐朽的木材中或下面度过。对我们的数据(20个物种和768个个体)的分析表明,在群落水平上,4月和10月出现了明显的丰度峰值。我们使用称为收敛交叉映射的非线性时间序列分析将数据与气候数据一起分析。通过对优势种扁钩虫(Leptolax planus)成虫种群动态与温度之间的因果关系的研究,表明扁钩虫的种群动态是由低温驱动的 出现前一个月。我们的研究表明,即使在东南亚永久潮湿的热带雨林中,昆虫种群动态也会对气候因素做出反应,并表现出季节性种群动态。
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来源期刊
Entomological Science
Entomological Science 生物-昆虫学
CiteScore
2.00
自引率
11.10%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Entomological Science is the official English language journal of the Entomological Society of Japan. The Journal publishes original research papers and reviews from any entomological discipline or from directly allied field in ecology, behavioral biology, physiology, biochemistry, development, genetics, systematics, morphology, evolution and general entomology. Papers of applied entomology will be considered for publication if they significantly advance in the field of entomological science in the opinion of the Editors and Editorial Board.
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