Aetobatus flagellum, Longheaded eagle ray : fisheries

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Aetobatus flagellum (Bloch & Schneider 1801)

Longheaded eagle ray
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Aetobatus flagellum   AquaMaps   Data sources: GBIF OBIS
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Image of Aetobatus flagellum (Longheaded eagle ray)
Aetobatus flagellum
Picture by Khan, M.M.

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

板鰓亜鋼(サメとエイ類) (sharks and rays) > Myliobatiformes (Stingrays) > Aetobatidae (Pacific eagle rays)
Etymology: Aetobatus: Greek, aetos = eagle + Greek, batis, batidos = a ray (Raja sp.) (Ref. 45335).  More on authors: Bloch & Schneider.

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

; 海; 汽水性の 底生の漂泳性; 両側回遊性 (Ref. 51243).   Tropical

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

Indo-West: Persian Gulf to Borneo (patchy distribution).

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 72.0 cm WD オス/雌雄の選別がない; (Ref. 4440); 最大公表体重: 13.9 kg (Ref. 40637)

簡単な記述 形態学 | 形態計測学

This species is characterized by the following: dorsal without spots or rings; long rostral lobe (longest in adult males) and narrowly pointed; disc very broad and short, its length 55-70% WD; pectoral fins weakly falcate and joining head at eye level, separate from rostral lobe; posterior margins moderately concave, rear tips free and broadly rounded; spiracles large, dorsolateral and visible in dorsal view; mouth ventral, its width narrower than preoral length; nasal curtain large, deeply notched centrally and with a curtain-like fringe; teeth plate-like in a single row, the upper teeth transverse, lower chevron-shaped; disc entirely smooth, no denticles or thorns; tail elongate, whip-like, ca. 1.2-2.8 times WD when undamaged; dorsal-fin small and raked back, apex broadly rounded, free rear tip short with origin behind pelvic-fin insertions; caudal stings 1 or 2, longest greater than preoral length. Colour uniform brownish or greenish brown, mostly white ventrally, pectoral tips and posterior margins of disc mostly pale brownish (Ref. 114953).

生物学     用語集 (例 epibenthic)

Inhabits inshore waters (Ref. 9862). Often found in brackish waters (Ref. 4832). Ovoviviparous (Ref. 50449). Caught occasionally by bottom trawl and inshore demersal gillnet fisheries off Jakarta. Utilized for its meat, but of limited value due to its rarity and small size (Ref.58048).

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).

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

McEachran, J.D. and B. Séret, 1990. Myliobatididae. p. 67-70. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4440)

IUCNのレッドリストの状況は (Ref. 123251)

  絶滅危惧 (EN) (A2d+3d+4d); Date assessed: 31 January 2006

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 少数商業の
FAO(Publication : search) | FishSource |

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インターネットの情報源

Estimates based on models

Preferred temperature (Ref. 115969): 24.2 - 29.2, mean 28.2 °C (based on 1688 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
栄養段階 (Ref. 69278):  3.6   ±0.5 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  低い, 4.5年~14年の倍増期間の最小個体群 (Fec assumed to be <100).
弱み (Ref. 59153):  High to very high vulnerability (71 of 100) .
価格帯 (Ref. 80766):   Medium.