Hypanus marianae, Brazilian large-eyed stingray

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Hypanus marianae (Gomes, Rosa & Gadig, 2000)

Brazilian large-eyed stingray
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Hypanus marianae   AquaMaps   Data sources: GBIF OBIS
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Image of Hypanus marianae (Brazilian large-eyed stingray)
Hypanus marianae
Picture by Sazima, I.

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, ) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Dasyatinae
Etymology: marianae: Named for Mariana R. Oliveria, daughter of Otto B.F. Gadig..

Environment: milieu / climate zone / depth range / distribution range 生態学

底生の; 深さの範囲 2 - 15 m (Ref. 36974). Tropical; 0°S - 19°S, 38°W - 45°W (Ref. 36974)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Southwest Atlantic: along the northeastern Brazilian coast, from the state of Maranhão to southern Bahia.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm WD オス/雌雄の選別がない; (Ref. 36974)

簡単な記述 形態学 | 形態計測学

This medium-sized species of Dasyatis is distinguished by the following characters: horizontal diameter of eye nearly equal to interorbital width and spiracle length; its tail is relatively short, less than two times disk width, distally filiform, with dorsal and ventral finfolds, ending approximately on same vertical line; height of dorsal finfold 1.5-2 in height of ventral finfold; the dorsal surface of disc is yellowish brown, with dark blotch between spiracles and two pairs of dark scapular and precaudal blotches; margins of disc and pelvic fins are blue dorsally; the ventral surface of disc white, with two symmetrical pairs of dark markings in adults (Ref. 36974).

生物学     用語集 (例 epibenthic)

Apparently associated with coral or sandstone reefs of the northeastern Brazilian continental shelf. Two female specimens were collected from the stomach of Rachycentron canadum (Ref. 36974). Juveniles also occurred in sandy beaches and estuaries. Ovoviviparous (Ref. 50449).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

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). A gravid female aborted one fully formed embryo (Ref. 36974).

主な参考文献 Upload your references | 参考文献 | コーディネーター : McEachran, John | 協力者

Gomes, U.L., R.S. Rosa and O.B.F. Gadig, 2000. Dasyatis marianae sp. n.: a new species of stingray (Chondrichthyes: Dasyatidae) from the southwestern Atlantic. Copeia 2000(2):510-515. (Ref. 36974)

IUCNのレッドリストの状況は (Ref. 130435)

  絶滅危惧 (EN) (A2cd); Date assessed: 01 July 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Preferred temperature (Ref. 123201): 27 - 27.9, mean 27.4 °C (based on 44 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00715 - 0.01930), b=3.10 (2.96 - 3.24), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  3.5   ±0.5 se; based on size and trophs of closest relatives
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=2).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).