Mustelus ravidus is a deep-sea species of cartilaginous fish of the genus common marten sharks of the family marten sharks of the order Karhariniformes . Endemic to the north coast of Australia . Propagated, presumably, by live birth . The maximum fixed length is 101 cm. There is no danger to humans. It does not have commercial value.
| Mustelus ravidus |
| Scientific classification |
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| No rank : | Bilateral symmetrical |
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| International scientific name |
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Mustelus ravidus ( WT White & Last , 2006) |
| Area |
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| Security status |
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Least ConcernedIUCN 3.1 Least Concern : 63165 |
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Content
The species was first scientifically described in 2006 [1] . Typical specimens : adult male and adult female 66.2 and 72.8 cm long, caught in 1982 in the Dampier Archipelago ; immature male 56.7 cm long, adult males 67.2 and 67.7 cm long and female 78.8 cm long, caught in 1982 at Port Hedland [2] .
Mustelus ravidus live on the northwestern coast of Australia from Perth ( Western Australia ) to Darwin ( Northern Territory ) [3] at a depth of 100 to 300 m.
Mustelus ravidus has a rather elongated spindle-shaped body. The muzzle is pointed. The mouth is small, in the form of an arch. Large oval eyes are elongated horizontally. Dorsal fins large, shifted back. Males have long pterigopodia, which make up 10% of the body length. There are 77 upper and 73 lower dentitions in the mouth. Color is gray or taupe. The belly is light. The tip and the posterior edge of the first dorsal fin are lightly marked, and the tips of the second dorsal and caudal fin are painted in dark color. At the upper edge of the caudal fin there is a ventral notch [1] [3] .
Mustelus ravidus breed, presumably, by live birth. Males reach puberty at a length of 83 cm, which corresponds to the age of 6 years. This species of sharks can breed up to 18-24 years.
The diet consists mainly of bottom crustaceans , in addition, these sharks eat small bony fish [1] [3] .
The view is not dangerous to humans. By- catch is caught in commercial fishing nets. Most of the range of these sharks is located in areas where there are strict restrictions on fishing or not at all. The International Union for Conservation of Nature has assigned this species the status of Least Concern. [four]
- β 1 2 3 White, WT and Last, PR 2006. Description of two new species of smooth-hounds, Mustelus widodoi and M. ravidus (Carcharhiniformes: Triakidae) from the western central Pacific. Cybium 30 (3): 235-246.
- β http://shark-references.com (unopened) . Date of treatment November 2, 2012. Archived December 29, 2012.
- β 1 2 3 Last, PR and Stevens, JD 1994. Sharks and Rays of Australia. CSIRO, Australia.
- β McAuley, RB 2011. Mustelus ravidus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 02 November 2012.
