Common names from other countries
分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Issue
Species complex include Gymnura lessae and
Gymnura sereti; distribution of and both species were included for Gymnura micrura. Distribution will be corrected.
Environment: milieu / climate zone / depth range / distribution range
生態学
海; 汽水性の 底生の; 深さの範囲 ? - 55 m (Ref. 27549). Deep-water
Southwestern Atlantic: Venezuela, including Trinidad and Tobago, to Brazil (Rio de Janeiro).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 35.0, range 34 - 50 cm
Max length : 137 cm WD オス/雌雄の選別がない; (Ref. 4439); common length : 90.0 cm WD オス/雌雄の選別がない; (Ref. 5217); 最大公表体重: 0.00 g
Broad, diamond-shaped ray with a very short tail lacking a dorsal spine (Ref. 26938). Snout protruding. Front edges of disk concave. Tail with low dorsal and ventral finfolds and 3 - 4 dark crossbars (Ref. 7251). Upper surface gray, brown, light green or purple with round spots. Lower surface white (Ref. 6902).
Prefers neritic waters of the continental shelf and
usually found on soft bottoms. May enter brackish
estuaries or hyper-saline lagoons (Ref. 5217). Feeds on
fish and shrimps (Ref. 28587); other crustaceans and clams
(Ref. 27549). Ovoviviparous (Ref. 50449). Generally
marketed salted (Ref. 5217).
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).
Yokota, L. and M.R. de Carvalho, 2017. Taxonomic and morphological revision of butterfly rays of Gymnura micrura (Bloch & Schneider, 1801) species complex, with the description of two new species (Myliobatiformes: Gymnuridae). Zootaxa 4332(1):1-74. (Ref. 116399)
CITES (Ref. 128078)
Not Evaluated
Human uses
水産業: 少数商業の
用具
特記事項
XMLをダウンロードして下さい
インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
115969): 21.8 - 27.9, mean 25 (based on 544 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00312 - 0.00843), b=3.10 (2.95 - 3.25), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (Ref.
69278): 3.6 ±0.53 se; based on food items.
回復力 (Ref.
120179): 非常に低い, １４年以上の倍増期間の最小個体群 (Fec=3).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (51 of 100).
