Breeding evidence of the vulnerable Swinhoe's Rail (Coturnicops exquisitus) in Japan

Senzaki, Masayuki; Kitazawa, Munehiro; Sadakuni, Toshio; Takahashi, Masao

doi:10.1676/19-45

Cited by 1 publication

(6 citation statements)

References 13 publications

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“…Taylor & Sharpe, 2020). Almost all of the presently recognized breeding areas were re-discovered recently following the first description of its vocalizations (Wulf et al, 2017), including the Amur region and Lake Baikal in Russia (Anisimova et al, 2019; Heim et al, 2019) and some northern regions of Japan, namely Aomori (Miya et al, 2005) and Hokkaido (Senzaki et al, 2020) (Fig. 1a).…”

Section: Methodsmentioning

confidence: 99%

“…Despite its highly cryptic lifestyle inhabiting inaccessible wet meadows (B. Taylor & Sharpe, 2020), we developed our original sampling strategies (Heim et al, 2019; Senzaki et al, 2020) and collected feather, buccal swab or blood samples successfully covering the entire extent of the known breeding area, Amur (n = 6) and Baikal (n = 1) for continental Russia, Kushiro (n = 12) and Tomakomai (n = 8) for Hokkaido Island, and Aomori (n = 4) for Honshu Island (Fig. 1a, Table S1).…”

Section: Methodsmentioning

confidence: 99%

“…While breeding evidence is lacking for its previously known breeding ranges on the continent (Fig. 1a, dark gray areas) (Heim et al 2019), the presently recognized breeding areas were re-discovered recently, including the Amur region (Heim et al 2019) and Lake Baikal (Anisimova et al 2019) in Russia and some regions of Japan, namely Aomori (Miya et al 2005) and Hokkaido (Senzaki et al 2020) (Fig. 1a).…”

Section: Methodsmentioning

confidence: 99%

“…This benefits from utilizing a large dataset from eBird (https://ebird.org/) from North American countries, while this is based on an assumption of niche conservatism that the two sister species retain the environment niche of their common ancestor. We justify this assumption because they show strong similarities in morphology and breeding ecology and have been treated as a single species until recently (Senzaki et al 2020; Taylor and Sharpe 2020). Fossils of their ancestral species in North America occurring 5.5 Mya also resembled the present Yellow Rail (Bickart and Chandler 1990), suggesting that the ecology of this species group has been probably evolutionary stable.…”

Section: Methodsmentioning

confidence: 99%

“…The Swinhoe's Rail is poorly studied, and almost all of the presently recognized breeding areas were re-discovered recently, including the Amur region [27] and Lake Baikal [28] in Russia and some regions of Japan, namely Aomori [29] and Hokkaido [30] (Fig. 1a).…”

Section: Field Samplingmentioning

confidence: 99%

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Phylogenomics reveals an island as a genetic reservoir of a continental population

Aoki,

Senzaki,

Ando

et al. 2023

Preprint

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AimIslands can become sources of continental biodiversity through reverse colonization. This is contradicted by the classic view of islands as sinks, because microevolution predicts difficulties in continental colonization by small island populations that are genetically depauperate. We fill this gap by examining historical demography that contributed to genetic variation of a continental population after reverse colonization. We exploit a rail species that likely evolved through reverse colonization, challenging the expectation that rails are the representatives of “end-of-colonization” on islands.LocationContinental East Asia (Russian Far East), Japanese ArchipelagoTaxaSwinhoe’s Rail (Coturnicops exquisitus)MethodsTo confirm reverse colonization, therein a continental population is derived from an island lineage, we reconstruct a complex phylogenetic relationship considering gene flow and introgression. We apply multiple methods using both high-throughput sequencing and mitochondrial datasets. We reconstruct a comprehensive demographic history of the species based on historical trajectory inference by Stairway Plot 2, fastsimcoal2 demographic modeling, and species distribution modeling. We assess genetic variation of the continental population and the key demographic process underlying them.ResultsThe continental population is inferred as a derived group within an island lineage, supporting reverse colonization. Demographic reconstruction suggests a significant population size decline through reverse colonization, with intraspecific gene flow from the island population. Introgression from an American sister species into the continental population is supported, which may be responsible for the unexpectedly high genetic variation observed.Main conclusionsUsing phylogenomics, we reconstruct reverse colonization associated with a complex history of population size changes and gene flow. Introgression, particularly, plays a pivotal role in rapidly restoring advantageous genetic variation for persistence and expansion on the continent post-reverse colonization. In theory, introgression assists adaptive radiation and diversification. Thus, our findings facilitate an understanding of the processes that islands contribute to global biodiversity, thereby bridging a gap between micro- and macroevolution.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Field Samplingmentioning

confidence: 99%

See 3 more Smart Citations

Phylogenomics reveals an island as a genetic reservoir of a continental population

Aoki,

Senzaki,

Ando

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Breeding evidence of the vulnerable Swinhoe's Rail (Coturnicops exquisitus) in Japan

Cited by 1 publication

References 13 publications

Phylogenomics reveals an island as a genetic reservoir of a continental population

Phylogenomics reveals an island as a genetic reservoir of a continental population

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