Adaptive and non‐adaptive causes of radiation: Is adaptation a harsh mistress of diversity?

Matsubayashi, Kei W.; Yamaguchi, Ryo

doi:10.1002/1438-390x.12120

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Evolutionary process has traditionally been a focus of Population Ecology, so it is our pleasure to feature studies about speciation processes. Please visit the Preface, which summarizes the structure of the featured papers (Matsubayashi & Yamaguchi, 2022a).…”

Section: Special Featuresmentioning

confidence: 99%

Population Ecology 2023 Editorial

Yamauchi

2022

Population Ecology

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Section: Special Featuresmentioning

confidence: 99%

Population Ecology 2023 Editorial

Yamauchi

2022

Population Ecology

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“…The ‘home vs. away’ criterion is interpreted as whether the local insect population shows higher fitness on its natal host than on non‐natal hosts. If the two criteria are satisfied simultaneously among multiple populations, the development of local adaptation can be regarded as the establishment of reciprocal ‘immigrant inviability’, a type of reproductive barrier which is defined as restriction of gene flow resulting from the higher mortality of immigrants from other habitats (Nosil et al., 2005b; Harrison et al., 2021; Matsubayashi & Yamaguchi, 2022), under allopatric conditions. The local adaptation in host‐use ability, such as physiological traits, can cryptically promote positive correlation between the host preference and assortative mating on the host plant as the establishment of ‘habitat isolation’, as a different type of reproductive barrier.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric local adaptation to host plants (Cirsium spp.) by the phytophagous ladybird beetle Henosepilachna niponica and its implications

Nakasone,

Matsubayashi,

Fujiyama

2023

Entomologia Exp Applicata

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Divergent host specialization by phytophagous insects is often detected as local adaptation and is thought to have played an important role in their diversification even within an ecological specialist. The phytophagous ladybird beetle Henosepilachna niponica Lewis (Coleoptera: Coccinellidae) predominantly depends on thistles (Cirsium spp., Asteraceae). The distribution of H. niponica occupies multiple areas dominated by different thistle species. This implies the possibility of the occurrence of host‐associated divergent specialization of H. niponica. In this study, we investigated the pattern of host‐use ability of three allopatric H. niponica populations (Aomori, Iwate, and Yamagata) on three thistle species – Cirsium alpicola Nakai, Cirsium nipponicum (Maxim.) Makino, and Cirsium tonense Nakai – under laboratory conditions. The results displayed asymmetric local adaptation by the beetles. The adults and larvae of the Aomori population showed sufficient acceptance and performance on C. nipponicum and C. tonense, the hosts of the Iwate and Yamagata populations, respectively. On the other hand, the Iwate and Yamagata populations fed small amounts of and performed poorly on C. alpicola, the host of the Aomori population. In contrast, the adults from all the populations clearly preferred feeding on C. nipponicum or C. tonense to C. alpicola. We concluded that the small but significant population differentiation and asymmetric local adaptation by beetles to congeneric host plant species could be a sign of the earliest stage of population divergence by divergent natural selection, given that these divergences will act as ‘immigrant inviability’ and ‘habitat isolation’ at least asymmetrically when these populations come into contact.

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Adaptive and non‐adaptive causes of radiation: Is adaptation a harsh mistress of diversity?

Cited by 2 publications

References 8 publications

Population Ecology 2023 Editorial

Population Ecology 2023 Editorial

Asymmetric local adaptation to host plants (Cirsium spp.) by the phytophagous ladybird beetle Henosepilachna niponica and its implications

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