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Phylogeography of lethal male fighting in a social spider mite

文献类型： 外文期刊

作者： Sato, Yukie 1 ; Tsuda, Yoshiaki 1 ; Sakamoto, Hironori 3 ; Egas, Martijn 5 ; Gotoh, Tetsuo 3 ; Saito, Yutaka 7 ; Zhang 1 ;

作者机构： 1.Univ Tsukuba, Mt Sci Ctr, Sugadaira Res Stn, Ueda, Nagano, Japan

2.Natl Agr & Food Res Org, Inst Agroenvironm Sci, Tsukuba, Ibaraki, Japan

3.Ibaraki Univ, Lab Appl Entomol & Zool, Fac Agr, Ami, Ibaraki, Japan

4.Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan

5.Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Amsterdam, Netherlands

6.Ryutsu Keizai Univ, Fac Econ, Ryugasaki, Ibaraki, Japan

7.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou, Fujian, Peoples R China

8.Hokkaido Univ, Res Fac Agr, Kita Ku, Sapporo, Hokkaido, Japan

9.Taiwan Forestry Res Inst, Div Forest Protect, Taipei, Taiwan

关键词： contest behavior; geographic variation; haplodiploidy; phylogeography; spider mite; the Japanese archipelago

期刊名称：ECOLOGY AND EVOLUTION （ 影响因子：2.912； 五年影响因子：3.271 ）

ISSN： 2045-7758

年卷期： 2019 年 9 卷 4 期

页码：

收录情况： SCI

摘要： When males fight for access to females, such conflict rarely escalates into lethal fight because the risks and costs involved, that is, severe injury or death, are too high. The social spider mite, Stigmaeopsis miscanthi, does exhibit lethal male fights, and this male-male aggressiveness varies among populations. To understand the evolution of lethal fighting, we investigated aggressiveness in 42 populations and phylogenetic relationships in 47 populations along the Japanese archipelago. By analysis of the male weapon morph, a proxy for aggressiveness, we confirmed the existence of a mildly aggressive (ML) form, besides the low aggression (LW) and high aggression (HG) forms reported earlier. To evaluate demographic history of these three forms, we employed the approximate Bayesian computation approach using mtCOI sequences and taking into consideration the postlast glacial expansion history of the host plant, Miscanthus sinensis. As results, hierarchical split models are more likely to explain the observed genetic pattern than admixture models, and the ML form in the subtropical region was considered the ancestral group. The inferred demographic history was consistent with the one reconstructed for the host plant in a previous study. The LW form was split from the ML form during the last glacial period (20,000-40,000years BP), and subsequently, the HG form was split from the ML form at the end of or after the last glacial period (5,494-10,988years BP). The results also suggest that the mite invaded Japan more than once, resulting in the present parapatric distribution of LW and HG forms in eastern Japan.

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