Population genetic structure and evolution of Batesian mimicry in Papilio polytes from the Ryukyu Islands, Japan, analyzed by genotyping‐by‐sequencing

資料種別:
論文(リポジトリ)
責任表示:
Sato, Yukuto ; Tsurui-Sato, Kaori ; Katoh, Mitsuho ; Kimura, Ryosuke ; Tatsuta, Haruki ; Tsuji, Kazuki
言語:
英語
出版情報:
Wiley, 2020-12-24
著者名:
Sato, Yukuto
Tsurui-Sato, Kaori
Katoh, Mitsuho
Kimura, Ryosuke
Tatsuta, Haruki
Tsuji, Kazuki
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掲載情報:
Ecology and Evolution
ISSN:
2045-7758  CiNii Articles  Webcat Plus  JAIRO
バージョン:
publisher
概要:
Batesian mimicry is a striking example of Darwinian evolution, in which a mimetic species resembles toxic or unpalatable model species, thereby receiving protection from predators. In some species exhibiting Batesian mimicry, nonmimetic ind ividuals coexist as polymorphism in the same population despite the benefits of mimicry. In a previous study, we proposed that the abundance of mimics is limited by that of the models, leading to polymorphic Batesian mimicry in the swallowtail butterfly, Papilio polytes, on the Ryukyu Islands in Japan. We found that their mimic ratios (MRs), which varied among the Islands, were explained by the model abundance of each habitat, rather than isolation by distance or phylogenetic constraint based on the mitochondrial DNA (mtDNA) analysis. In the present study, this possibility was reexamined based on hundreds of nuclear single nucleotide polymorphisms (SNPs) of 93 P. polytes individuals from five Islands of the Ryukyus. We found that the population genetic and phylogenetic structures of P. polytes largely corresponded to the geographic arrangement of the habitat Islands, and the genetic distances among island populations show significant correlation with the geographic distances, which was not evident by the mtDNA‐based analysis. A partial Mantel test controlling for the present SNP‐based genetic distances revealed that the MRs of P. polytes were strongly correlated with the model abundance of each island, implying that negative frequency‐dependent selection interacting with model species shaped and maintained the mimetic polymorphism. Taken together, our results support the possibility that predation pressure, not isolation by distance or other neutral factors, is a major driving force of evolution of the Batesian mimicry in P. polytes from the Ryukyus. 続きを見る
URL:
http://hdl.handle.net/20.500.12000/47605
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