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The stoat (Mustela erminea), also known as the Eurasian ermine or ermine, is a species of mustelid native to Eurasia and the northern regions of North America. Because of its wide circumpolar distribution , it is listed as Least Concern on the IUCN Red List . [ 1 ]
Skulls of a long-tailed weasel (top), a stoat (bottom left) and least weasel (bottom right), as illustrated in Merriam's Synopsis of the Weasels of North America. The long-tailed weasel is the product of a process begun 5–7 million years ago, when northern forests were replaced by open grassland, thus prompting an explosive evolution of small, burrowing rodents.
Southwestern stoat or New Mexico ermine M. r. muricus. Bangs, 1899 The smallest subspecies of richardsonii. [2] The southwestern extremity of the species' American range (Nevada, Utah, Colorado and other states) leptus (Merriam, 1903) Olympic stoat M. r. olympica. Hall, 1945 The Olympic Peninsula, Washington: Richardson's stoat M. r. richardsonii
The federal Endangered Species Act was enacted on Dec. 28, 1973. Fifty years later, Pa. wildlife experts discuss the successes and challenges.
This list of mammals in Pennsylvania consists of 66 species currently believed to occur wild in the state. This excludes feral domesticated species such as feral cats and dogs . Several species recently lived wild in Pennsylvania, but are now extirpated (locally, but not globally, extinct).
The majority of the species were considered endangered in the 1970s and 1980s when they “were in very low numbers or likely already extinct at the time of listing,” the release said.
Population sizes are largely unknown, though two species, the sea mink and Japanese otter, were hunted to extinction in 1894 and 1979, respectively, and several other species are endangered. Some species have been domesticated, e.g. the ferret and some populations of the South American tayra. Mustelidae is one of the oldest families in ...
This is a list of reptiles of Pennsylvania as listed by the Pennsylvania Fish and Boat Commission. [1] As of 2024, there are 38 native reptiles in Pennsylvania. The species are listed as in the PFBC list, with the exception of introduced species, which are derived from other sources. Notes on ranges provided by Pennsylvania Amphibian & Reptile ...