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A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific

Title
A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific
Authors
Roterman, Christopher NicolaiLee, Won-KyungLiu, XinmingLin, RongchengLi, XinzhengWon, Yong-Jin
Ewha Authors
원용진
SCOPUS Author ID
원용진scopus
Issue Date
2018
Journal Title
PLOS ONE
ISSN
1932-6203JCR Link
Citation
PLOS ONE vol. 13, no. 3
Publisher
PUBLIC LIBRARY SCIENCE
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
The recent discovery of two new species of kiwaid squat lobsters on hydrothermal vents in the Pacific Ocean and in the Pacific sector of the Southern Ocean has prompted a re-analysis of Kiwaid biogeographical history. Using a larger alignment with more fossil calibrated nodes than previously, we consider the precise relationship between Kiwaidae, Chirostylidae and Eumunididae within Chirostyloidea (Decapoda: Anomura) to be still unresolved at present. Additionally, the placement of both new species within a new "Bristly" clade along with the seep-associated Kiwa puravida is most parsimoniously interpreted as supporting a vent origin for the family, rather than a seep-to-vent progression. Fossil-calibrated divergence analysis indicates an origin for the clade around the Eocene-Oligocene boundary in the eastern Pacific similar to 33-38 Ma, coincident with a lowering of bottom temperatures and increased ventilation in the Pacific deep sea. Likewise, the mid-Miocene (similar to 10-16 Ma) rapid radiation of the new Bristly clade also coincides with a similar cooling event in the tropical East Pacific. The distribution, diversity, tree topology and divergence timing of Kiwaidae in the East Pacific is most consistent with a pattern of extinctions, recolonisations and radiations along fast-spreading ridges in this region and may have been punctuated by large-scale fluctuations in deep-water ventilation and temperature during the Cenozoic; further affecting the viability of Kiwaidae populations along portions of mid-ocean ridge.
DOI
10.1371/journal.pone.0194696
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자연과학대학 > 생명과학전공 > Journal papers
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