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[2] [3] From 2018 to 2019, 19 wolves were released at Isle Royale in hopes of bringing stability to the ecosystem, and as of 2020, there are estimated to be 14 wolves remaining on the island. [4] The relationship between wolves and moose on Isle Royale has been the subject of the longest predator-prey research study, begun in 1958. [5]
Isle Royale National Park is a national park of the United States consisting of Isle Royale, along with more than 400 small adjacent islands and the surrounding waters of Lake Superior, in Michigan. Isle Royale is 45 mi (72 km) long and 9 mi (14 km) wide, with an area of 206.73 sq mi (535.4 km 2 ), making it the fourth-largest lake island in ...
Gray wolves are thriving at Isle Royale National Park five years after authorities began a last-ditch attempt to prevent the species from dying out on the Lake Superior island chain, scientists ...
This instance may simply be termed genetic pollution instead of being referred to genetic rescue. Rescue may also only be a short-term solution, as shown by the case of the Isle Royale Wolves. In that case, genetic rescue of the wolves resulted in a large initial increase in population fitness followed by a large decline in subsequent years. [10]
A small isolated highly inbred population of gray wolves in Isle Royale National Park, Michigan, USA, was considered in 2019 to be at imminent risk of extinction. [22] This gray wolf population had been experiencing severe inbreeding depression primarily due to the homozygous expression of strongly deleterious recessive mutations.
Jul. 12—Isle Royale's revived wolf population appears to be doing well, with several new pups born over the last two years, while the island's overpopulated moose herd continues to crash.
TRAVERSE CITY, Mich. (AP) — Moose are thriving at Isle Royale National Park, but the trees on which they feast are paying a heavy price, scientists reported Tuesday.
Population fragmentation causes inbreeding depression, which leads to a decrease in genetic variability in the species involved. [4] This decreases the fitness of the population for several reasons. First, inbreeding forces competition with relatives, which decreases the evolutionary fitness of the species. [ 4 ]