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Ischadium recurvum
Image courtesy of the World Register of Marine Species (creative commons CC-BY-NC-SA license), original source Natural History Museum Rotterdam.
Ischadium recurvum
Taxonomic Group: Mollusks-Bivalves
Common name: HOOKED MUSSEL


Ischadium recurvum is commonly known as the Hooked Mussel. It was first described from the Mississippi River near New Orleans and its native range extends throughout the Gulf of Mexico to the Chesapeake Bay and possibly the Delaware Bay. An introduced population is established in Rhode Island. Larvae of I. recurvum settle on a variety of hard substrates, including oysters, wood, and rocks and they can tolerate an extremely wide range of temperatures and salinities. In their native range, they can foul oysters causing the oysters to grow in a misshapen form, or compete with oyster spat for space.

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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