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Issue: Vol. 4444 No. 4: 11 Jul. 2018
Type: Article
Published: 2018-07-11
DOI: 10.11646/zootaxa.4444.4.9
Page range: 491–500
Abstract views: 77
PDF downloaded: 4

New records of Synallactes  virgulasolida Massin & Hendrickx, 2010 (Echinodermata: Holothuroidea) from the eastern Pacific

Postgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, Mazatlán Sinaloa, 82000, México
Laboratorio de Invertebrados Bentónicos, Unidad Académica Mazatlán Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, P.O. Box 811, Mazatlán Sinaloa, 82000, México
Echinodermata Holothuroidea Synallactes deep water oxygen minimum zone western Mexico

Abstract

Specimens of the sea cucumber Synallactes virgulasolida were obtained during sampling operations off western Mexico. Based on a total of 190 specimens and on additional records available in the Scripps Institution of Oceanography collections, new geographical (southern California to Chile) and bathymetric (712‒1300 m) distributions are provided. SEM photographs of ossicles are provided for the first time for this species. New ecological data associated with the presence of this species are also provided: 4.17‒5.81 °C, 0.15‒0.48 ml O2/l, and in 34.40‒34.48 ups. The species occurs in a wide variety of sediments with an organic carbon content of 17.93‒52.02 mg/g (1.79–5.20 % of organic matter) and is occasionally very dense (up to 170.32 orgs/ha). All Mexican records correspond to a bathymetric fringe located below the Oxygen Minimum Zone, thus indicating that S. virgulasolida is able to tolerate hypoxic conditions.

 

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