Pleurolucina from the western Atlantic and eastern Pacific Oceans: a new intertidal species from Curacao with unusual shell microstructure (Mollusca, Bivalvia, Lucinidae)

Type Article
Date 2016
Language English
Author(s) Glover Emily A.1, Taylor John D.1
Affiliation(s) 1 : Nat Hist Museum, Dept Life Sci, London SW7 5BD, England.
Source Zookeys (1313-2989) (Pensoft Publ), 2016 , N. 620 , P. 1-19
DOI 10.3897/zookeys.620.9569
WOS© Times Cited 4
Keyword(s) Bacterial symbionts, Caribbean, conchiolin layers, defensive adaptation, Lucinidae, Pleurolucina

A new shallow water species of the lucinid bivalve Pleurolucina is described from Curacao in the southern Caribbean Sea and compared with known species of the genus from the western Atlantic and eastern Pacific Oceans. Although confused with the Floridian species P. leucocyma, it is most similar to the eastern Pacific P. undata. As in all studied lucinids, the new species possesses symbiotic bacteria housed in the ctenidia. The shell microstructure is unusual with repeated and intercalated conchiolin layers that have sublayers of 'tulip-shaped' calcareous spherules. Predatory drillings by naticid gastropods frequently terminate at the conchiolin layers.

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