BioOne.org will be down briefly for maintenance on 17 December 2024 between 18:00-22:00 Pacific Time US. We apologize for any inconvenience.
How to translate text using browser tools
1 February 2011 Crayfish Fauna of Southeastern Pennsylvania: Distributions, Ecology, and Changes Over the Last Century
David A. Lieb, Raymond W. Bouchard, Robert F. Carline
Author Affiliations +
Abstract

We describe the current distributions and relative abundances of southeastern Pennsylvania's crayfish; changes in the region's crayfish fauna over the last century; and, where pertinent, the relationship of the current fauna to site-specific characteristics, basin-wide attributes, and exotic crayfish. The crayfish fauna currently inhabiting the region bears little resemblance to the historical assemblage. Whereas historical surveys yielded Orconectes limosus and Cambarus bartonii, both native species, recent collections produced eight species including five exotics. Many areas occupied by exotic Orconectes no longer support O. limosus. Cambarus bartonii was found in a number of invaded systems, but was typically a minor component of the crayfish community and may not be able to persist in those systems indefinitely. The distribution of Cambarus (Puncticambarus) sp., an undescribed member of the Cambarus acuminatus complex, was extremely limited, with populations only found in four streams, all of which are threatened by urbanization and exotic crayfish. Exotic species collections include the first published records for Procambarus clarkii in Pennsylvania and extend the ranges of Orconectes virilis and Orconectes obscurus in the state by > 150 km. These results indicate the need for conservation and management initiatives aimed at preserving the native crayfish that remain in southeastern Pennsylvania.

David A. Lieb, Raymond W. Bouchard, and Robert F. Carline "Crayfish Fauna of Southeastern Pennsylvania: Distributions, Ecology, and Changes Over the Last Century," Journal of Crustacean Biology 31(1), 166-178, (1 February 2011). https://doi.org/10.1651/10-3287.1
Received: 5 January 2010; Accepted: 1 April 2010; Published: 1 February 2011
JOURNAL ARTICLE
13 PAGES

This article is only available to subscribers.
It is not available for individual sale.
+ SAVE TO MY LIBRARY

KEYWORDS
Cambarus acuminatus complex
Cambarus bartonii
conservation
exotic species
Orconectes limosus
Orconectes obscurus
Orconectes rusticus
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top