none none 20764324 20764332 Freshwater Crayfish Freshwater Crayfish Recent Range Records of Crayfish (Faxonius) From Far North Ontario, Canada Jane Devlin David V. Beresford 28 1 63 2023 full_text 10.5869/fc.2023.v28-1.63 20764324 20764332 Freshwater Crayfish Freshwater Crayfish An Update of the Classification, Status, and Distribution of Canadian Freshwater Crayfishes Premek Hamr 26 2 119 2021 full_text 10.5869/fc.2021.v26-2.119 20764324 20764332 Freshwater Crayfish Freshwater Crayfish The Life History of the Rusty Crayfish (Faxonius rusticus) in a Small Southern Ontario Stream Premek Hamr Noah Verhoeff 27 1 17 2022 full_text 10.5869/fc.2022.v27-1.17 FRESHWATER CRAYFISH: The Crayfishes of Manitoulin Island
Issue Cover image

You need to login to your IAA account in order to access jounral PDFs.
Member Login

Freshwater Crayfish 20(1): 87-91 (2014)


Download: PDF (1.71 Mb)

The Crayfishes of Manitoulin Island

Hamr P, Hamr J and Hoel M  e-mail link

Published Online: 12/31/2014


The distribution of crayfish species found on Manitoulin Island in Lake Huron, Ontario, Canada was documented. Major water bodies on the island were surveyed in 2007, and again in 2012 and 2013. The island is geographically unique, as it is considered a refugium, similar geologically to regions located in more southern Ontario. Overall, fifty one sites were sampled on the main island, as well as smaller adjacent islands and the mainland. Orconectes propinquus, Orconectes virlis and Cambarus bartonii are the three native species found on the island. Cambarus bartonii was recorded at one site only, O. virilis occurred at twenty three localities, while O. propinquus was recorded at thirty two locations. The latter two species were in sympatry at fifteen of the locations. The introduced Orconectes rusticus occurred at eight localities, of which one was shared with O. propinquus. Orconectes immunis, Cambarus robustus and Fallicambarus fodiens, which occur in other parts of Ontario, were not found on the island. The significance of the overall distribution is discussed in terms of past surveys, as well as the present and future impacts of the introduced O. rusticus in model scenarios of existing and potential spread in southern Ontario and Quebec.

Supplemental Documents

CrossRef Logo

Cited By

0 Citations:

How to Cite

Hamr P, Hamr J and Hoel M. (2014). The Crayfishes of Manitoulin Island. Freshwater Crayfish 20(1):87-91. doi: 10.5869/fc.2014.v20-1.87



Author Information

Premek  Hamr,* Science, Upper Canada College, , , , . E-mail:

Josef  Hamr, School of Renewable Energy and Environmental Studies, Cambrian College, 1400 Barrydowne Road, Sudbury, , Ontario,, CanadaP3A 3V8. E-mail:

Mark  Hoel, Geography, Upper Canada College, 200 Lonsdale rd., Toronto,, Ontario, CanadaM4V 1W6. E-mail:

Corresponding Author indicated by an *.


Publication History

   Manuscript Submitted: 4/23/2014

   Manuscript Accepted: 7/3/2014

   Published Online: 12/31/2014

   Published in Print: 12/31/2014



Funding Information

No specific funding statement is available for this article.






Member Login

Forgot Your Password?

Recover PW

Enter the e-mail address you used to
create your IAA account.
Return to Login
Back to Top