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Okamejei heemstrai

Okamejei heemstrai (lat.) Is a species of cartilaginous fish of the rhombic family of rays of the order of stingrays. They live in the western Indian Ocean . They are found at a depth of up to 500 m. Their large, flattened pectoral fins form a rhombic disk. The maximum recorded length is 51.5 cm. Eggs are laid. They are not the target fishing target [1] [2] [3] .

Okamejei heemstrai
Scientific classification
Domain:Eukaryotes
Kingdom:Animals
Kingdom :Eumetazoi
No rank :Bilateral symmetrical
No rank :Secondary
Type of:Chordate
Subtype :Vertebrates
Infratype :Maxillary
Group :Fish
Grade:Cartilaginous fish
Subclass :Euselemia
Infraclass :Gill
Squadron :Ramps
Squad:Stingrays
Family:Rhombus ramps
Subfamily :Rajinae
Gender:Okamejei
View:Okamejei heemstrai
International scientific name

Okamejei heemstrai ( McEachran & Fechhelm , 1982)

Synonyms
  • Raja _heemstrai McEachran & Fechhelm, 1982
Security status
Status none DD.svg en:Data Deficient
Not enough data
IUCN Data Deficient : 161421

Content

  • 1 Taxonomy
  • 2 Area
  • 3 Description
  • 4 Biology
  • 5 Human interaction
  • 6 notes
  • 7 References

Taxonomy

The species was first scientifically described in 1982 as Raja heemstrai [4] . The species is named after the ichthyologist Philip Himstra. Known only for a few individuals caught in the waters of East Africa [2] .

Range

These bathydemersal ramps live in the western Indian Ocean off the coast of Kenya , Mozambique and Tanzania . They are found at a depth of 200-500 m [2] .

Description

The wide and flat pectoral fins of these rays form a rhombus disk. On the ventral side of the disc are 5 gill slits, nostrils and mouth. On the thin tail there are lateral folds. These skates have 2 reduced dorsal fins and a reduced caudal fin [1] . The maximum recorded length is 51.5 cm [3] .

Biology

These stingrays lay eggs enclosed in a rigid horn capsule with protrusions at the ends. Embryos feed exclusively on yolk [3] .

Human Interaction

These skates are not subject to targeted fishing. The data for the assessment of the conservation status of the species by the International Union for Conservation of Nature are insufficient [2] .

Notes

  1. ↑ 1 2 Froese, Rainer, and Daniel Pauly, eds. Family Rajidae - Skates (Neopr.) . FishBase
  2. ↑ 1 2 3 4 Okamejei heemstrai (English) . The IUCN Red List of Threatened Species .
  3. ↑ 1 2 3 Okamejei heemstrai (English) in the FishBase database.
  4. ↑ McEachran JD & Fechhelm JD A new species of skate from the western Indian Ocean, with comments on the status of Raja ( Okamejei ) ( Elasmobranchii: Rajiformes ) // Proceedings of the Biological Society of Washington. - 1982. - Vol. 95, No. (3) . - P. 440-450.

Links

  • View Okamejei heemstrai (English) in the World Register of Marine Species .
Source - https://ru.wikipedia.org/w/index.php?title=Okamejei_heemstrai&oldid=81695733


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