Grazing intensity negatively affects the maintenance of Gentiana pneumonanthe and the survival of Phengaris alcon egg-laying

Moschetti, Maïly; Besnard, Aurélien; Couturier, Thibaut; Fonderflick, Jocelyn

doi:10.1007/s10841-020-00220-8

Cited by 7 publications

(2 citation statements)

References 28 publications

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“…There are three possible reasons for this result: illegal digging (Japanese Ministry of Environment, 2020), grazing by sika deer (Takatsuki, 1990(Takatsuki, , 2009Tsujino & Yumoto, 2004), and a habitat area reduction by the uplift of forest and vegetation lines by warming (Japanese Ministry of the Environment, 2017). The high intensity of grazing by mammalian herbivores negatively affected the maintenance of population in the congener of G. yakushimensis (Moschetti et al, 2020). The high density of the sika deer in Yakushima Island (Tsujino & Yumoto, 2004) might lead to the decrease in population size.…”

Section: Resultsmentioning

confidence: 99%

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Ishii

Hirota

Tsunamoto

et al. 2022

Plant Species Biology

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Rare or endangered species largely contributing to global biodiversity are essential components of ecosystems. Because genetic diversity depends not only on apparent population size but also demographic processes, the conservation priority of endangered species based on population genetics needs to be assessed by comparison with common congeners and demographic events. In this study, we performed population genetic analysis for Gentiana yakushimensis Makino, a rare and endangered plant species with an isolated distribution on Yakushima Island, Japan. We performed comparison of genetic diversity with the congener (Gentiana triflora Pall. var. japonica [Kusn.] H.Hara), demographic inference, and bottleneck test based on genome‐wide single nucleotide polymorphisms. The result was that G. yakushimensis had an extremely low genetic diversity level and a high inbreeding coefficient level compared with those of the congener. The population of G. yakushimensis was estimated to experience an expansion during the Last Glacial Maximum and a recent bottleneck by the demographic inference and the bottleneck test. Therefore, the low level of genetic diversity of this species might have resulted from the impact of the recent bottleneck and the long‐term maintenance of a small population size. Due to the long lifespan of the genus Gentiana, the current level of genetic diversity probably does not reflect a large part of recent demographic events, which requires long‐term monitoring of changes in genetic diversity to identify the time lag between the reduction in apparent population size and genetic diversity as a future outlook.

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Section: Resultsmentioning

confidence: 99%

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Ishii

Hirota

Tsunamoto

et al. 2022

Plant Species Biology

View full text Add to dashboard Cite

show abstract

“…There are three possible reasons for this result: illegal digging (Japanese Ministry of Environment, 2020), grazing by sika deer (Takatsuki, 1990(Takatsuki, , 2009Tsujino & Yumoto, 2004), and a habitat area reduction by the uplift of forest and vegetation lines by warming (Japanese Ministry of the Environment, 2017). The high intensity of grazing by mammalian herbivores negatively affected the maintenance of population in the congener of G. yakushimensis (Moschetti, Besnard, Couturier, & Fonderflick, 2020). The high density of the sika deer in Yakushima Island (Tsujino & Yumoto, 2004) might lead to the decrease in population size.…”

Section: Discussionmentioning

confidence: 99%

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Ishii

Hirota

Tsunamoto

et al. 2022

Preprint

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Rare or endangered species largely contributing to global biodiversity are essential components of ecosystems. Because genetic diversity depends not only on apparent population size but also demographic processes, the conservation priority of endangered species based on population genetics needs to be assessed by comparison with common congeners and demographic events. In this study, we performed population genetic analysis for Gentiana yakushimensis, a rare and endangered plant species with an isolated distribution on Yakushima Island, Japan. We also compared genetic diversity with the congener (Gentiana triflora) and demographic inferences based on genome-wide single nucleotide polymorphisms. The result was that G. yakushimensis had an extremely low genetic diversity level and a high inbreeding coefficient level compared to those of the congener. The population of G. yakushimensis was estimated to experience gentle expansion during the Holocene and a bottleneck over the past several decades by demographic inference. Therefore, the low level of genetic diversity of this species might have resulted from the impact of the recent bottleneck and the long-term maintenance of a small population size. Due to the long lifespan of the genus Gentiana, the current level of genetic diversity probably does not reflect a large part of recent demographic events, which requires long-term monitoring of changes in genetic diversity to identify the time lag between the reduction in apparent population size and genetic diversity as a future outlook.

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Can cattle grazing benefit grassland butterflies?

Bussan

2022

J Insect Conserv

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Grazing intensity negatively affects the maintenance of Gentiana pneumonanthe and the survival of Phengaris alcon egg-laying

Cited by 7 publications

References 28 publications

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Extremely low level of genetic diversity in Gentiana yakushimensis, an endangered species in Yakushima Island, Japan

Can cattle grazing benefit grassland butterflies?

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