Pacifastacus fortis - Earth.com
pacifastacus fortis
12-22-2016

Pacifastacus fortis

Pacifastacus fortis NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — Pacifastacus fortis ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world. Pacifastacus fortis (known as the Shasta crayfish or placid crayfish) is an endangered crayfish species endemic to Shasta County, California, where it is found only in isolated spots on the Pit River and Fall River Mills . P. fortis is thick and stocky, with relatively heavy chelae.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video. The signal crayfish is native to North America west of the Rocky Mountains, including the Canadian province of British Columbia, and the U.S. states of Washington, Oregon, and Idaho. It was introduced to California in 1912 into the San Lorenzo River watershed and from there rapidly spread throughout the state. The only native crayfish remaining in California is the Shasta crayfish, of Shasta County, California(Pacifastacus fortis), where efforts are being made to create a barrier to signal crayfish invasion.

Detailed information
Full Name: Shasta crayfish (Pacifastacus fortis)
Where found: Wherever found
Critical Habitat:N/A
Species Group:Crustaceans
Current listing status
Status Date Listed Lead Region Where Listed
Endangered 09/30/1988 California/Nevada Region (Region 8) Wherever found
  • States/US Territories in which the Shasta crayfish, Wherever found is known to or is believed to occur: California
  • US Counties in which the Shasta crayfish, Wherever found is known to or is believed to occur: View All
Recovery
No critical habitat rules have been published for the Shasta crayfish.
Date
Title
Plan Action Status
Plan Status
08/28/1998 Recovery Plan for the Shasta Crayfish (Pacifastacus fortis) View Implementation Progress Final
Date
Title
Plan Action Status
Plan Status
08/28/1998 Recovery Plan for the Shasta Crayfish (Pacifastacus fortis) View Implementation Progress Final
Date
Citation Page
Title
Document Type
04/01/2013 78 FR 19510 19514 Initiation of 5-Year Reviews of 56 Species in California and Nevada; request for information
  • Notice 5-year Review, Initiation
05/21/2010 75 FR 28636 28642 Initiation of 5-Year Reviews of 34 Species in California and Nevada; Availability of 96 Completed 5-Year Reviews in California and Nevada
  • Notice 5-year Review, Completion
03/05/2008 73 FR 11945 11950 Initiation of 5-Year Reviews of 58 Species in California and Nevada; Availability of Completed 5-Year Reviews in California, Nevada and Southern Oregon
  • Notice 5-year Review, Initiation
Date
Title
08/17/2009 Shasta Crayfish 5-Year Review
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