Chesapeake Bay Introduced Species Database


Myosotella myosotis

Common name(s):
salt marsh snail
Myosotella myosotis is a small brown salt marsh snail, native to Europe (British Isles, Mediterranean, etc.), that is sometimes called the mouse-ear marsh snail. It has been introduced into several locations including the East Coast of North America from Nova Scotia to the West Indies, the US west coast from Washington to California, South Africa, Australia, and New Zealand. Introduction of this snail could have occurred by several means including, dry ballast (rocks and dirt used for weight on old sailing vessels), the oyster trade, and discarded packing material. Once these snails have been introduced to a new location their local range expansion is limited, thus their distribution remains spotty for years after introduction. These snails were first reported in Chesapeake Bay in 1900 in St. Leonard?s Creek, a Patuxent River tributary. But over the years they have shown up in several other locations including Fisherman's Island (Northampton Co), VA, at the mouth of the Bay, Norfolk, VA marshes, Crisfield, MD, and the Little Annemessex River in Maryland. Along the Atlantic Coast they have been reported in Chincoteague, Watt's Bay, Willis Wharf, and Hog Island Bay, VA. No negative impacts have been reported.
Image courtesy of Auguste Le Roux.

References:

Allen, J. Frances (1954) Notes on the gastropods collected in the vicinity of Crisfield, Maryland, The Nautilus 67: 92-94
 
Berman, Jody; Carlton, James T. (1991) Marine invasion processes: Interactions between native and introduced marsh snails, Journal of Experimental Marine Biology and Ecology 150: 267-281
 
Carlton, James T. (1992) Introduced marine and estuarine mollusks of North America: An end-of-the-20th-century perspective., Journal of Shellfish Research 11: 489-505
 
Hubbard, J. W.; Smith, Sanderson (1865) Catalogue of the Mollusca of Staten Island, N. Y., Annals of the Lyceum of Natural History in New York 8: 2-5
 
Johnson, Charles W. (1915) Fauna of New England. 13. List of the Mollusca, Occasional Papers of the Boston Society of Natural History 7: 1-223
 
Johnson, Charles W. (1934) List of marine mollusca of the Atlantic coast from Labrador to Texas, Proceedings of the Boston Society of Natural History 40: 1-204
 
Martins, Antonio M. (1996) Anatomy and systematics of the Western Atlantic Ellobiidae (Gastropoda, Pulmonata)., Malacologia 37: 163-332
 
Meyer, von Karl Otto (1955) Naturgeschichte der Standschnecke Ovatella myosotis (Draparanaud), Archiv fur Molluskenkunde 84: 1-43
 
Morrison, J. P. E. (1963) Cecina from the state of Washington, Nautilus 76: 150-151
 
Perkins, George H. (1869) Molluscan fauna of New Haven. A critical review of all the marine, fresh water and land Mollusca of the region, with descriptions of many of the living animals and of two new species. Part I. Cephalopoda and Gasteropda, Proceedings of the Boston Society of Natural History 13: 109-136
 
Perkins, George H. (1869) Molluscan fauna of New Haven. A critical review of all the marine, fresh water and land Mollusca of the region, with descriptions of many of the living animals and of two new species. Part I. Cephalopoda and Gasteropda, Proceedings of the Boston Society of Natural History 13: 109-136
 
Phorson, J. E. (1990) Some observations on juveniles and growth series of Leucophytia bidentata (Montagu 1808) and Ovatella myosotis (Draparnaud 1801)., Conchologist's Newsletter : 366-370
 
Pilsbry, H. A. (1900) Notices of new American snails, The Nautilus 14: 40
 
Ruthensteiner, Bernhard (1991) Development of Ovatella (Myosotella) myosotis (Pulmonata, Ellobiidae)., Proccedings of the International Malacological Congress 10: 45-46
 
Seelemann, Ursula (1968) Zur Uberwindung der biologischen grenze meer-land durch mollusken, Oecologia 1: 130-154
 
Smith, Sanderson; Prime, Temple (1870) Report on the Mollusca of Long Island, N. Y., and of its dependencies, Annals of the Lyceum of Natural History 9: 377-407
 
Wass, Melvin L. (1972) A checklist of the biota of lower Chesapeake Bay, Special Scientific Report, Virginia Institute of Marine Science 65: 1-290
 


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