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Petrolisthes cabrilloi

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Petrolisthes cabrilloi
Cabrillo Porcelain Crab imported from iNaturalist photo 125330099 on 19 March 2024.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Anomura
Family: Porcellanidae
Genus: Petrolisthes
Species:
P. cabrilloi
Binomial name
Petrolisthes cabrilloi
S.A. Glassell, 1945

Petrolisthes cabrilloi, also known as the Cabrillo porcelain crab, is a species of porcelain crab. [1] Native to the Pacific coast of North America, it was first described to science by Steve Glassell in 1945 [2] [3] [4] from crabs collected in Anaheim Landing, California. [2] Its range is believed to be from Morro Bay to Baja California. [5] It is more common than its close cousin Petrolisthes cinctipes in waters south of Point Conception. [5]

Description

The Cabrillo porcelain crab is a smooth porcelain crab with a dull orange carapace that is marked by small spots. [2] These spots have some pubescence in them, with the carapace noticeably hairier in juveniles. [2] The chelipeds, commonly called pincers or claws, are large, about three times the width of the carapace. [2] Each cheliped is flattened and has a carpus ("wrist") that is about twice as long than it is wide, [2] without strong tubercles or teeth adorning it. [6] P. cabrilloi is the most similar in appearance to P. cinctipes, [2] and is often found under the same rocks, [7] but only P. cabrilloi has pubescent, setose ambulatory legs, a carpus length twice that of the width, and juvenile carapace pubescence. [2]

P. cabrilloi has the longest cheliped tufts of any Petrolisthes species in California. [7] While Petrolisthes species are primarily filter feeders, these tufts can be used to capture food particles while scraping it from environmental surfaces. [7] P. cabrilloi likewise differs from other Petrolisthes species by its higher tolerance for sand and turbid water, [2] but is also often found with other Petrolisthes species in the rocky intertidal zone. [7]

References

  1. ↑ "Petrolisthes cabrilloi (Cabrillo Porcelain Crab)". iNaturalist. Retrieved 2024-03-18.
  2. 1 2 3 4 5 6 7 8 9 Glassell, S.A. (1945). "Four new species of North American crabs of the genus Petrolisthes". Journal of the Washington Academy of Sciences. 35 (7): 223–229.
  3. ↑ DecaNet eds. (2024). DecaNet. Petrolisthes cabrilloi Glassell, 1945. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=431840 on 2024-03-19
  4. ↑ van de Hoek, Robert Jan (December 28, 2009). "Steve Glassell". naturespeace.org. Retrieved 2024-03-19.
  5. 1 2 Hiebert, T.C. (2015). "Petrolisthes cinctipes: The flat porcelain crab" (PDF). Oregon Institute of Marine Biology (oimb.uoregon.edu). Retrieved 2024-03-18.
  6. ↑ Haig, Janet, Hopkins, T S, Scanland, Thomas Boyd (1970). "The Shallow Water Anomuran Crab Fauna Of Southwestern Baja-California Mexico". Transactions of the San Diego Society of Natural History. 16. The Society: 13--31. doi:10.5962/bhl.part.15453.
  7. 1 2 3 4 Gabaldon, D. J. (1979-01-01). "Observation of a possible alternative mode of feeding in a porcellanid crab (Petrolisthes cabrilloi Glassell, 1945) (Decapoda, Anomura)". Crustaceana. 36 (1): 110–112.
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