Chesapeake Science

, Volume 6, Issue 1, pp 38–42

Maryland records of the gastropod,Littorina littorea, with a discussion of factors controlling its southern distribution

  • Harry W. Wells

DOI: 10.2307/1350621

Cite this article as:
Wells, H.W. Chesapeake Science (1965) 6: 38. doi:10.2307/1350621


The common periwinkle,Littorina littorea, is reported from Ocean City, Maryland, and its southern spread is reviewed. A southward flowing longshore current has assisted its southward spread. The southern limit of this species is correlated with water mean isothern of 21°C in the warmest month on both sides of the Atlantic. This limit may be expected to fluctuate with yearly variations in coastal water temperatures.

Copyright information

© Estuarine Research Federation 1965

Authors and Affiliations

  • Harry W. Wells
    • 1
  1. 1.Department of Biological SciencesFlorida State UniversityTallahassee