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Crinitostella laguardai, new genus and species of wood-dwelling deep-sea sea-star (Asteroidea: Caymanostellidae) from the Gulf of Mexico

Published online by Cambridge University Press:  30 June 2021

Carolina Martin-Cao-Romero ,
Francisco Alonso Solís-Marín  and
Guadalupe Bribiesca-Contreras Open the ORCID record for Guadalupe Bribiesca-Contreras [Opens in a new window]
Carolina Martin-Cao-Romero
Affiliation:
Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mexico City, Mexico
Francisco Alonso Solís-Marín
Affiliation:
Laboratorio de Sistemática y Ecología de Equinodermos, Colección Nacional de Equinodermos “Dra. Ma. E. Caso Muñoz”, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Universitario s/n, Mexico City, 04510, Mexico
Guadalupe Bribiesca-Contreras*
Affiliation:
Natural History Museum, London, UK
*
Author for correspondence: Guadalupe Bribiesca-Contreras, E-mail: l.bribiesca-contreras@nhm.ac.uk
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Abstract

The Caymanostellidae is a family of rarely encountered wood-dwelling deep-sea sea-stars, with only six species, in two genera, described to date. During the COBERPES 5 expedition on board the RV ‘Justo Sierra’, off Tabasco, Gulf of Mexico in 2013, 12 specimens were recovered from a single piece of sunken wood. Herein we describe a new genus and species of caymanostellid, Crinitostella laguardai gen. nov., sp. nov. This species represents the shallowest known caymanostellid (418–427 m depth), and the first known occurrence of the Caymanostellidae from the Gulf of Mexico. The family Caymanostellidae displays affinities with several groups, such as Asterinidae and Korethrasteridae, making it difficult to infer its phylogenetic position evidenced by the myriad of contrasting phylogenetic hypotheses proposed. In an attempt to shed some light on the phylogenetic relationships of the family, sequences of nuclear and mitochondrial DNA of the new species were generated and combined with published data. As previously suggested, caymanostellids seem to be part of valvatacean polytomy rather than velatids.

Keywords

AsteroideaCaymanostellidaedeep-seaGulf of MexicoValvatidaVelatidawood-dwelling
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 101 , Issue 3 , May 2021 , pp. 591 - 597
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom

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Footnotes

*

Both authors contributed equally to the work.

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