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Phylogeography of lethal male fighting in a social spider mite

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 amon...

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Autores principales: Sato, Yukie, Tsuda, Yoshiaki, Sakamoto, Hironori, Egas, Martijn, Gotoh, Tetsuo, Saito, Yutaka, Zhang, Yan‐Xuan, Lin, Jian‐Zhen, Chao, Jung‐Tai, Mochizuki, Atsushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6392385/
https://www.ncbi.nlm.nih.gov/pubmed/30847058
http://dx.doi.org/10.1002/ece3.4770
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author Sato, Yukie
Tsuda, Yoshiaki
Sakamoto, Hironori
Egas, Martijn
Gotoh, Tetsuo
Saito, Yutaka
Zhang, Yan‐Xuan
Lin, Jian‐Zhen
Chao, Jung‐Tai
Mochizuki, Atsushi
author_facet Sato, Yukie
Tsuda, Yoshiaki
Sakamoto, Hironori
Egas, Martijn
Gotoh, Tetsuo
Saito, Yutaka
Zhang, Yan‐Xuan
Lin, Jian‐Zhen
Chao, Jung‐Tai
Mochizuki, Atsushi
author_sort Sato, Yukie
collection PubMed
description 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 (20,000–40,000 years BP), and subsequently, the HG form was split from the ML form at the end of or after the last glacial period (5,494–10,988 years 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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spelling pubmed-63923852019-03-07 Phylogeography of lethal male fighting in a social spider mite Sato, Yukie Tsuda, Yoshiaki Sakamoto, Hironori Egas, Martijn Gotoh, Tetsuo Saito, Yutaka Zhang, Yan‐Xuan Lin, Jian‐Zhen Chao, Jung‐Tai Mochizuki, Atsushi Ecol Evol Original Research 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 (20,000–40,000 years BP), and subsequently, the HG form was split from the ML form at the end of or after the last glacial period (5,494–10,988 years 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. John Wiley and Sons Inc. 2019-01-24 /pmc/articles/PMC6392385/ /pubmed/30847058 http://dx.doi.org/10.1002/ece3.4770 Text en © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Sato, Yukie
Tsuda, Yoshiaki
Sakamoto, Hironori
Egas, Martijn
Gotoh, Tetsuo
Saito, Yutaka
Zhang, Yan‐Xuan
Lin, Jian‐Zhen
Chao, Jung‐Tai
Mochizuki, Atsushi
Phylogeography of lethal male fighting in a social spider mite
title Phylogeography of lethal male fighting in a social spider mite
title_full Phylogeography of lethal male fighting in a social spider mite
title_fullStr Phylogeography of lethal male fighting in a social spider mite
title_full_unstemmed Phylogeography of lethal male fighting in a social spider mite
title_short Phylogeography of lethal male fighting in a social spider mite
title_sort phylogeography of lethal male fighting in a social spider mite
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6392385/
https://www.ncbi.nlm.nih.gov/pubmed/30847058
http://dx.doi.org/10.1002/ece3.4770
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