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1 April 2012 First Record of Mercenaria mercenaria (Bivalvia: Veneridae) and Ensis directus (Bivalvia: Pharidae) on Bay of Biscay, Iberian Peninsula
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Abstract

We present the first record of two nonnative Bivalvia species originally from North America, Mercenaria mercenaria and Ensis directus, in the waters of the Iberian Peninsula (southwest of the Bay of Biscay). This constitutes the southernmost distribution for these species in the northeast Atlantic to date. We provide notes on the relative abundance, depth range, and substrate preferences of the species in their new habitat. The bivalve E. directus has became the dominant Ensis species along the Cantabric sandy shores it has colonized.

Andrés Arias and Nuria Anadón "First Record of Mercenaria mercenaria (Bivalvia: Veneridae) and Ensis directus (Bivalvia: Pharidae) on Bay of Biscay, Iberian Peninsula," Journal of Shellfish Research 31(1), 57-60, (1 April 2012). https://doi.org/10.2983/035.031.0107
Published: 1 April 2012
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