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| Syncaris pacifica | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Caridea |
| Family: | Atyidae |
| Genus: | Syncaris |
| Species: | S. pacifica
|
| Binomial name | |
| Syncaris pacifica (Holmes, 1895)
| |
| Synonyms[4] | |
|
Miersia pacifica Holmes, 1895 | |
Syncaris pacifica is an endangered species of freshwater shrimp in the family Atyidae that occurs only in a limited range within the northern San Francisco Bay Area, California, USA. Specifically, this species occurs only in 17 stream segments within Sonoma, Napa and Marin Counties. This species is often translucent to transparent, with both sexes capable of considerable coloration altering, as a sophisticated form of camouflage.[5] This decapod is commonly known as California freshwater shrimp, and is the only extant decapod shrimp in California that occurs in non-saline waters (its congener Syncaris pasadenae from the basin of the Los Angeles River is extinct).[6][7]
S. pacifica is one of only four members of the family Atyidae in North America.[7] Genetic studies have been conducted to compare specimens of Syncaris pacifica from various drainages, with the results showing a variety of well-defined genetic variations within these populations.[8] The species has a superficial appearance to its better known marine relatives, and may attain a body length of about 5 centimetres (2.0 in).[citation needed]
- ^ De Grave, S.; Rogers, C. (2013). "Syncaris pacifica". IUCN Red List of Threatened Species. 2013: e.T21249A2774672. doi:10.2305/IUCN.UK.2013-1.RLTS.T21249A2774672.en. Retrieved 19 November 2021.
- ^ "California freshwater shrimp (Syncaris pacifica)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 29 April 2023.
- ^ 53 FR 43884
- ^ "Syncaris pacifica (Holmes, 1895)". WoRMS. World Register of Marine Species. 2023. Retrieved 18 August 2023.
- ^ "Species account for California freshwater shrimp, Syncaris pacifica". United States Fish and Wildlife Service Office, Sacramento Division. Archived from the original on April 1, 2007.
- ^ Cite error: The named reference
:0was invoked but never defined (see the help page). - ^ a b Hedgpeth, Joel W. (1968). "The atyid shrimp of the genus Syncaris in California". Internationale Revue der gesamten Hydrobiologie und Hydrographie (in German). 53 (4): 511–524. doi:10.1002/iroh.19680530402.
- ^ Kevin J. Roe. "Systematics, evolution, & conservation: North American atyid shrimp".