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The Halomonhystera disjuncta population is homogeneous across the Håkon Mosby mud volcano (Barents Sea) but is genetically differentiated from its shallow-water relativesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 сентября 2014 г.
- Авторы: Van_Campenhout J., Derycke S., Tchesunov A., Portnova D., Vanreusel A.
- Журнал: Journal of Zoological Systematics and Evolutionary Research
- Том: 52
- Номер: 3
- Год издания: 2014
- Издательство: Blackwell Publishing Inc.
- Местоположение издательства: United Kingdom
- Первая страница: 203
- Последняя страница: 216
- DOI: 10.1111/jzs.12054
- Аннотация: The deep sea is known to have a high biodiversity and a characteristic bathyal fauna. Earlier evidence suggested that at least part of this ecosystem was invaded by shallow-water species followed by radiation leading to endemic deep-sea lineages with a genetic and/or morphological similarity to their shallow-water counterparts. The nematode Halomonhystera disjuncta has been reported from shallow-water habitats and the deep sea (Håkon Mosby mud volcano(HMMV)), but the morphological features and the phylogenetic relationships between deep-sea and shallow-water representatives remain largely unknown. Furthermore, nothing is known about the population genetic structure within the HMMV. This study is the first integrative approach in which the morphology and phylogenetic relationships between a deep-sea and shallow-water free-living nematode species is investigated. To elucidate the phylogenetic relations, we analyzed the mitochondrial gene Cytochrome oxidase c subunit I (COI) and three nuclear ribosomal genes (Internal Transcribed Spacer region (ITS), 18S and the D2D3 region of 28S). Our results show that the deep-sea nematode is an endemic lineage compared to the shallow-water representatives with different morphometric features. COI genetic divergence between the deep-sea and shallow-water ranges between 20.8% and 24.1%. Taking these findings into account we conclude that the deep-sea form is a new species. AMOVA further showed strong genetic structuring within the HMMV, suggesting that in the deep sea dispersal can be limited between geographical close populations.
- Добавил в систему: Чесунов Алексей Валерьевич