Diversity, distribution and intrinsic extinction vulnerability of exploited marine bivalves

Shan Huang (), Stewart M. Edie, Katie S. Collins, Nicholas M. A. Crouch, Kaustuv Roy and David Jablonski
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Shan Huang: University of Birmingham, Edgbaston
Stewart M. Edie: Smithsonian Institution
Katie S. Collins: The Natural History Museum
Nicholas M. A. Crouch: University of Chicago
Kaustuv Roy: University of California San Diego
David Jablonski: University of Chicago

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract Marine bivalves are important components of ecosystems and exploited by humans for food across the world, but the intrinsic vulnerability of exploited bivalve species to global changes is poorly known. Here, we expand the list of shallow-marine bivalves known to be exploited worldwide, with 720 exploited bivalve species added beyond the 81 in the United Nations FAO Production Database, and investigate their diversity, distribution and extinction vulnerability using a metric based on ecological traits and evolutionary history. The added species shift the richness hotspot of exploited species from the northeast Atlantic to the west Pacific, with 55% of bivalve families being exploited, concentrated mostly in two major clades but all major body plans. We find that exploited species tend to be larger in size, occur in shallower waters, and have larger geographic and thermal ranges—the last two traits are known to confer extinction-resistance in marine bivalves. However, exploited bivalve species in certain regions such as the tropical east Atlantic and the temperate northeast and southeast Pacific, are among those with high intrinsic vulnerability and are a large fraction of regional faunal diversity. Our results pinpoint regional faunas and specific taxa of likely concern for management and conservation.

Date: 2023
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DOI: 10.1038/s41467-023-40053-y

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