You can sponsor this page

Hemitrygon akajei (Müller & Henle, 1841)

Whip stingray
Add your observation in Fish Watcher
Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hemitrygon akajei   AquaMaps   Data sources: GBIF OBIS
Upload your photos and videos
Pictures | Google image
Image of Hemitrygon akajei (Whip stingray)
Hemitrygon akajei
Picture by CAFS


Japan country information

Common names: Aka ei, Aka-ei
Occurrence: native
Salinity: marine
Abundance: scarce (very unlikely) | Ref: Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998
Importance: minor commercial | Ref: FAO, 1994
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Reported from around Japan (Ref. 11230). Ranges from central Honshu southward. Also Ref. 637.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ja.html
National Fisheries Authority: http://www.maff.go.jp/eindex.html
Occurrences: Occurrences Point map
Main Ref: Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
National Database:

Common names from other countries

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

Lớp phụ Cá sụn (cá mập và cá đuối) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Dasyatinae
Etymology:   More on authors: Müller & Henle.

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

Biển; Thuộc về nước lợ gần đáy; Ở đại duơng, biển (Ref. 51243); Mức độ sâu 10 - 50 m (Ref. 114953).   Subtropical; 43°N - 23°N (Ref. 114953)

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Northwest Pacific: central China to northern Japan.

Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm 44.0  range ? - ? cm
Max length : 200 cm TL con đực/không giới tính; (Ref. 637); common length : 100.0 cm TL con đực/không giới tính; (Ref. 637); Khối lượng cực đại được công bố: 10.7 kg (Ref. 40637)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Disc rhomboid, anterior margin straight, posterior margin convex. Snout triangular and slightly produced. dorsal keel present on tail. Adults with small spines on disc and posterior part of tail. Brown dorsally and some with orangish pectoral fin margins, in front of eyes, behind spiracles, on the sides of the tail just anterior to the sting. Ventrum orangish red.

Sinh học     Tự điển (thí dụ epibenthic)

Found in coral reefs and estuarine areas, on sand and mud bottoms (Ref. 12951, 11230). Feeds on small fishes and crustaceans (Ref. 9840). Ovoviviparous with litters of only 1 pup (Ref. 114953) while earlier estimates indicated production of up to 10 in a litter (Ref. 12951). Caught occasionally by bottom trawl fisheries operating inshore. Utilized for its meat but of limited value due to its small size (Ref.58048). Served in 'miso' soup, hard boiled with seasonings, or for 'kamaboko' material (Ref. 637).

Life cycle and mating behavior Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối : McEachran, John | Người cộng tác

Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)

IUCN Red List Status (Ref. 130435)

  Near Threatened (NT) (A2bd); Date assessed: 27 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Venomous (Ref. 637)




Human uses

Các nghề cá: Tính thương mại; Bể nuôi cá: Tính thương mại
FAO(Các nghề cá: Sản xuất; publication : search) | FishSource | Biển chung quanh ta

Thêm thông tin

Trophic ecology
Các loại thức ăn
Diet compositions
Food consumptions
Food rations
Các động vật ăn mồi
Ecology
Sinh thái học
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Sự tái sinh sản
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Ấu trùng
Sự biến động ấu trùng
Anatomy
Gill areas
Não bộ
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Dạng bơi
Swimming speeds
Visual pigment(s)
Âm thanh của cá
Diseases / Parasites
Toxicities (LC50s)
Genetics
Di truyền
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Các tổng quan nuôi trồng thủy sản
Các giống
Ciguatera cases
Stamps, coins, misc.

Các công cụ

Special reports

Download XML

Các nguồn internet

Estimates based on models

Preferred temperature (Ref. 115969): 21.4 - 29, mean 28.1 (based on 510 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00265 - 0.01571), b=3.06 (2.86 - 3.26), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  3.8   ±0.58 se; based on food items.
Thích nghi nhanh (Ref. 120179):  thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (K=0.1; Fec=1).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
Climate Vulnerability (Ref. 125649):  Very high vulnerability (87 of 100).
Price category (Ref. 80766):   Medium.