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Conservation and diversity of the crayfishes of the genus Fallicambarus Hobbs, 1969 (Decapoda, Cambaridae), with an emphasis on the status of Fallicambarus fodiens (Cottle, 1863) in Canada

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The crayfish genus Fallicambarus Hobbs, 1969 contains 16 species. All of these are semi-terrestrial burrowers found in the eastern half of North America. A total of 75% of the Fallicambarus species is currently endangered, threatened, or vulnerable, and these therefore, require special attention from a conservation standpoint. The most widely distributed species of this genus, Fallicambarus fodiens (Cottle, 1863), is also vulnerable in certain parts of its overall range. The information available about these little-known crayfishes is reviewed in order to raise awareness about the distribution, ecology, and status of these species, and to assist potential conservation efforts. Detailed information is presented about the current status of Fallicambarus fodiens in Canada. Habitat destruction and degradation associated with the loss of wetlands are the main threats to the species of Fallicambarus in general, and to Fallicambarus fodiens populations in Ontario in particular. The introduction of non-native crayfishes is not expected, though, to have any major impact on the F. fodiens populations in Ontario at this time. Le genre d'écrevisse Fallicambarus Hobbs, 1969 comprend 16 espèces. Toutes creusent des terriers semi-terrestres et vivent dans la moitié orientale de l'Amérique du Nord. Un total de 75% des espèces de Fallicambarus sont actuellement en danger, menacées, ou vulnérables et demandent donc une attention particulière du point de vue de leur conservation. L'espèce la plus largement répartie de ce genre, Fallicambarus fodiens (Cottle, 1863), est également vulnérable dans certains parties de son aire de répartition. L'information disponible sur ces écrevisses peu connues est revue de façon à prendre conscience de la répartition, de l'écologie et du statut de ces espèces, et d'apporter une aide à d'éventuelles initiatives de conservation. Une information détaillée est présentée sur le statut actuel de Fallicambarus fodiens au Canada. La destruction de l'habitat et la dégradation associée à la disparition des zones humides sont les principales menaces portant sur les espèces de Fallicambarus en général, et sur les populations de Fallicambarus fodiens d'Ontario en particulier. L'introduction d'écrevisses non-indigènes ne semble pas, cependant, avoir en ce moment un impact majeur sur les populations de Fallicambarus fodiens en Ontario.

Affiliations: 1: Environmental and Health Studies Programme, Department of Multidisciplinary Studies, Glendon College, York University, 2275 Bayview Avenue, Toronto, Ontario M4N 3M6, Canada


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