Biology:Glebocarcinus oregonensis
| Glebocarcinus oregonensis | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | |
| Order: | |
| Infraorder: | |
| Family: | |
| Genus: | |
| Species: | G. oregonensis
|
| Binomial name | |
| Glebocarcinus oregonensis (Dana, 1852) [1]
| |
| Synonyms [1] | |
| |
Glebocarcinus oregonensis, commonly known as the pygmy rock crab, is a species of crab found on the Pacific coast of North America.
Description
It is usually red/brown but this may vary; their legs have many setae (hairs). The carapace reaches a width of about 5 centimetres (2 in), and is widest at the 7th or 8th lateral tooth.[2] The chelipeds are black at the tip, and the dactylus of the cheliped has no spiny ridges; the dorsal surface is covered with small tubercles (rounded projections), and males have larger chelipeds than females.[3]
Ecology
Glebocarcinus oregonensis is found mostly in crevices, holes (dead barnacles) and under rocks.[3] They can live in depths of up to 1,400 feet (430 m).[2] They are nocturnal feeders, feeding mostly on small barnacles, snails, bivalves, worms, green algae and Pacific oysters.[3] Predators include Pacific cod, river otters and red rock crab.[3]
Breeding occurs during the summer, and the Puget Sound females carry eggs from November to May.[3] It is not unusual to find harems consisting of one male with as many as seven females.[3] Males may carry females that are molting and continue until their new shell hardens, for mating occurs after females molt.[3]
References
- ↑ 1.0 1.1 Peter K. L. Ng; Danièle Guinot; Peter J. F. Davie (2008). "Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world". Raffles Bulletin of Zoology 17: 1–286. Archived from the original on 2011-06-06. https://web.archive.org/web/20110606061453/http://rmbr.nus.edu.sg/rbz/biblio/s17/s17rbz.pdf.
- ↑ 2.0 2.1 Mary Jo Adams (December 5, 2005). "Cancer oregonensis (Pygmy rock crab)". Intertidal Organisms EZ-ID Guides. Washington State University Extension - Island County. http://www.beachwatchers.wsu.edu/ezidweb/animals/Canceroregonensis.htm. Retrieved February 3, 2010.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Dave Cowles (2005). "Glebocarcinus oregonensis (Dana), Schweitzer and Feldmann, 2000)". Walla Walla University. http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Arthropoda/Crustacea/Malacostraca/Eumalacostraca/Eucarida/Decapoda/Brachyura/Family_Cancridae/Cancer_oregonensis.html. Retrieved February 3, 2010.
Further reading
- Eugene N. Kozloff; Linda H. Price (1996). Marine invertebrates of the Pacific Northwest. University of Washington Press. ISBN 978-0-295-97562-7.
Wikidata ☰ Q5567456 entry
 |  |
