COSEWIC assessment and status report on the on the unisexual Ambystoma, Ambystoma laterale (small-mouthed salamander−dependent population (Ambystoma laterale - texanum), Jefferson salamander−dependent...: CW69-14/730-2016E-PDF

“[The small-mouthed Salamander dependent population] exist only on one isolated island in Canada (Pelee Island in Lake Erie) and depend on an endangered sperm donor species, Small-mouthed Salamander (Ambystoma texanum), for recruitment. The salamander faces numerous threats that make its continued existence precarious. These include predation and habitat modification by introduced wild turkeys, drainage activities that can cause premature drying of breeding ponds, road mortality during seasonal migrations, urban development, and recreational activities. [The Jefferson Salamander dependent population] occupy restricted areas within populated and highly modified areas of Ontario and depend on an endangered sperm donor species, Jefferson Salamander (Ambystoma jeffersonianum), for recruitment. The salamander faces numerous threats from human activities, leading to habitat loss and fragmentation, making its continued existence precarious. [The Blue-spotted Salamander dependent population] depend on a sperm-donor species, Blue-spotted Salamander (Ambystoma laterale), that has an extensive distribution in Canada. It is found from Nova Scotia to Manitoba and from the Great Lakes to James Bay and Northern Quebec. Unisexuals that depend on this species have been identified in sites across this range and likely exist in many other sites that have not been subjected to genetic analyses. While declines have been observed and are expected for the Blue-spotted Salamander and unisexuals that depend on it in southwestern Ontario, threats are localized and expected to have little effect on the entire Canadian population"--Reasons for designation, p. iii.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.818548&sl=0

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