Biology:Bigelow's ray
| Bigelow's ray | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Superorder: | Batoidea |
| Order: | Rajiformes |
| Family: | Rajidae |
| Genus: | Rajella |
| Species: | R. bigelowi
|
| Binomial name | |
| Rajella bigelowi (Stehmann, 1978)
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| Synonyms[2] | |
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Bigelow's ray (Rajella bigelowi), also called the chocolate skate or Bigelow's skate,[3] is a species of skate in the family Rajidae.[4][5][6] It is named in honour of the oceanographer Henry Bryant Bigelow.[7]
Distribution
Bigelow's ray lives on continental slopes and deepwater rises around the edges of the Atlantic Ocean. It has been recorded at 367–4,156 m (1,204–13,635 ft), mostly below 1,500 m (4,900 ft).[8][9]
Description
Like all rays, Bigelow's ray has a flattened body with broad, wing-like pectoral fins. The body is sub-rhomboid. It is dark on the dorsal surface, with the outer edges of the disc and pelvic fins shading to a slightly darker colour.[4]
Its maximum length is 55 cm (1.80 ft).[10]
Behaviour
Bigelow's ray feeds on small benthic crustaceans.[11]
Life cycle
Bigelow's ray is oviparous. The eggs are oblong capsules with stiff pointed horns at the corners; they are deposited in sandy or muddy flats.[12]
It is parasitised by Ditrachybothridium macrocephalum (tapeworms of the order Diphyllidea).[10]
See also
References
- ↑ Orlov, A. (December 1, 2008). "IUCN Red List of Threatened Species: Rajella bigelowi". IUCN Red List of Threatened Species. https://www.iucnredlist.org/en.
- ↑ "WoRMS - World Register of Marine Species - Rajella bigelowi (Stehmann, 1978)". http://www.marinespecies.org/aphia.php?p=taxdetails&id=105893.
- ↑ Hamlett, William C. (May 21, 1999). Sharks, Skates, and Rays: The Biology of Elasmobranch Fishes. JHU Press. ISBN 9780801860485. https://books.google.com/books?id=ON-sPP5rowwC&dq=%22Rajella+bigelowi%22&pg=PA492.
- ↑ 4.0 4.1 Government of Canada, Fisheries and Oceans Canada (December 19, 2016). "Chocolate or Bigelow's Skate (Rajella bigelowi)". https://www.dfo-mpo.gc.ca/species-especes/profiles-profils/chocolatebigelowskate-raiebigelow-eng.html.
- ↑ Priede, Imants G. (August 10, 2017). Deep-Sea Fishes: Biology, Diversity, Ecology and Fisheries. Cambridge University Press. ISBN 9781316033456. https://books.google.com/books?id=fBcwDwAAQBAJ&dq=%22Rajella+bigelowi%22&pg=PA154.
- ↑ Coad, Brian W.; Reist, James D. (January 1, 2018). Marine Fishes of Arctic Canada. University of Toronto Press. ISBN 9781442647107. https://books.google.com/books?id=cu9ADwAAQBAJ&dq=%22bigelowi%22&pg=PA197.
- ↑ Watkins, Michael; Beolens, Bo (January 30, 2015). Sharks: An Eponym Dictionary. Pelagic Publishing Ltd. ISBN 9781784270377. https://books.google.com/books?id=tLvlBgAAQBAJ&dq=%22Rajella+bigelowi%22&pg=PA210.
- ↑ Carrier, Jeffrey C.; Musick, John A.; Heithaus, Michael R. (March 9, 2010). Sharks and Their Relatives II: Biodiversity, Adaptive Physiology, and Conservation. CRC Press. ISBN 9781420080483. https://books.google.com/books?id=VioW40mAljUC&dq=%22Rajella+bigelowi%22&pg=PA102.
- ↑ "Shorefishes - The Fishes - Species". https://biogeodb.stri.si.edu/caribbean/en/thefishes/species/5665.
- ↑ 10.0 10.1 "WoRMS - World Register of Marine Species - Rajella bigelowi (Stehmann, 1978)". http://www.marinespecies.org/aphia.php?p=taxdetails&id=105893#attributes.
- ↑ Last, Peter; Naylor, Gavin; Séret, Bernard; White, William; Stehmann, Matthias; Carvalho, Marcelo de (December 1, 2016). Rays of the World. Csiro Publishing. ISBN 9780643109155. https://books.google.com/books?id=n82sDQAAQBAJ&dq=%22Rajella+bigelowi%22&pg=PT1545.
- ↑ "Rajella bigelowi, Bigelow's ray". https://www.fishbase.se/summary/8936.
External links
Wikidata ☰ Q944732 entry
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