Leucoraja garmani (lat.) - a type of cartilaginous fish of the family of rhombic rays of the order of the sloped . They live in the subtropical waters of the northwestern and centralwestern Atlantic between 44 ° C. sh. and 24 ° c. sh. and between 81 ° h. d. and 69 ° h. They are found at a depth of up to 530 m. Their large, flattened pectoral fins form a diamond shaped disk with a pointed snout. Maximum recorded length is 57 cm. Lay eggs. Not subject to target fishing [1] [2] [3] .
| Leucoraja garmani |
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| Scientific classification |
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| No rank : | Bilateral symmetric |
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| International Scientific Name |
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Leucoraja garmani ( Whitley , 1939) |
| Synonyms |
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- Raja garmani Whitley, 1939
- Raja ackleyi ornata Garman, 1881
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| Security status |
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Least concernIUCN 3.1 Least Concern : 161419 |
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Content
The species was first scientifically described in 1939 as Raja garmani [4] . The lectotype is an immature male 17 cm long, caught off the coast of South Carolina ( ) at a depth of 260 m [5] . The species is named after ichthyologist Samuel Garman .
These oceanic reef ridges live off the east coast of the United States ( Connecticut , Delaware , Florida , Georgia , Maryland , Massachusetts , New Jersey, North and South Carolina, and Virginia. They occur at a depth of 33–530 m, mostly between 74 and 274 m at temperatures 5.3—15 ° C. They prefer a sandy and muddy bottom [2] .
Wide and flat pectoral fins of these rays form a rhombic disk with rounded edges and slightly protruding snout tip. On the ventral side of the disc are 5 gill slits, nostrils and mouth. On the thin tail there are lateral folds. These rays have 2 reduced dorsal fins and a reduced tail fin [1] . Rows of spines run along the back and sides of the tail. The tail is longer than the disc. The dorsal surface is covered with a pattern of dark rosettes on a pale brown background and numerous dark and light specks. Ventral surface white or pale yellow [3] .
The maximum recorded length is 57 cm [2] , and the width of the disk is 26 cm [3] .
These rays lay eggs enclosed in a hard horn capsule with outgrowths at the ends. The length of the capsule without antennae is 3.7–5.4 cm, and the width is 2.6–3.0 cm. The embryos feed exclusively on yolk . Young skates tend to follow large objects that resemble their mother. The diet consists mainly of decapod crustaceans , and also includes scuds , polychaete , squid and fish [3] . Males and females reach sexual maturity to the north of Cape Hatteras with a length of 33.5–43.9 cm, and to the south - 25.0–31.4 cm [2] .
These stingrays are not targeted. Caught as by- catch . Meat is eaten. The market comes in fresh and salted form [3] . The International Union for Conservation of Nature has granted the species the status of “Causes the least concern” [2] .
- ↑ 1 2 Froese, Rainer, and Daniel Pauly, eds. Family Rajidae - Skates (Unsolved) . FishBase.
- ↑ 1 2 3 4 5 Leucoraja garmani (English) . The IUCN Red List of Threatened Species .
- ↑ 1 2 3 4 5 Leucoraja garmani (Eng.) In the FishBase database.
- ↑ Whitley GP Taxonomic notes on sharks and rays // Australian Zoologist. - 1939. - Vol. 9, no. (3) . - P. 227-262, fig. 18, pl. 20-22.
- ↑ Leucoraja garmani (Neopr.) . shark-references.com. The appeal date is September 8, 2016.
