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Raja miraletus Linnaeus, 1758

Brown 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.
Raja miraletus   AquaMaps   Data sources: GBIF OBIS
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Image of Raja miraletus (Brown ray)
Raja miraletus
Picture by Furlan, B.

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) > Rajiformes (Skates and rays) > Rajidae (Skates) > Rajinae
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).  More on author: Linnaeus.

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

; 海; 汽水性の 底生の; 深さの範囲 17 - 462 m (Ref. 56504), usually 50 - 150 m (Ref. 27121).   Subtropical; 44°N - 35°S

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

Eastern Atlantic: northern Portugal and throughout the Mediterranean to Madeira and South Africa. Reported from the Canary Islands (Ref. 3167) but occurrence needs verification (Ref. 6808). Also in southwestern part of the Indian Ocean.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 44 - ? cm
Max length : 63.0 cm TL オス/雌雄の選別がない; (Ref. 39256); 59.7 cm TL (female); common length : 35.0 cm TL オス/雌雄の選別がない; (Ref. 2683)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 0; 肛門の骨 0; 臀鰭: 0. Snout short and bluntly pointed; disc angular (Ref. 5578). Upper surface prickly only in young, nearly smooth in adults, underside smooth (Ref. 3167). Upper surface ochre to reddish-brown with scattered dark spots, underside white (Ref. 3167); two bright blue eyespots centered on the pectoral bases (Ref. 5578); may have a small dark spot on tip of snout (Ref. 2708).

生物学     用語集 (例 epibenthic)

Found over soft bottoms of the shelf and the uppermost slope (Ref. 5578). Depth range from 17-300 m, and up to depth of 462 m in the eastern Ionian Sea (Ref. 56504). Feed on all kinds of benthic animals, also on fish offal (Ref. 5578). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 4.2-4.6 cm long and 2.7-2.9 cm wide (Ref. 41250). About 40-72 eggs are lain by an individual in a year (Ref. 41250). Caught by ski-boat anglers (Ref. 5578).

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

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). With egg-cases laid from spring to summer (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).

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

McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)

IUCNのレッドリストの状況は (Ref. 120744)

  軽度懸念 (LC) ; Date assessed: 05 September 2003

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 商業; ゲームフィッシュ: はい
FAO(水産業: 代謝; publication : search) | FishSource | 私達の周りの海

より多くの情報

共通名の
類義語
代謝
捕食動物
生態毒性
繁殖
成熟
放精
卵の集合体
生産力

卵の開発
Age/Size
成長
体長-重さ
Length-length
体長組成
形態計測学
形態学
幼生
幼生の動力
補充
豊度
参考文献
水産養殖
水産養殖の紹介
緊張
遺伝子の
対立遺伝子頻度
遺伝
病気
行列
Mass conversion
協力者
画像
Stamps, Coins Misc.

シガテラ(食中毒の名前)
速度
泳ぐ 型式
カマ
Otoliths

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インターネットの情報源

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Estimates based on models

Preferred temperature (Ref. 115969): 13.1 - 25.6, mean 17.6 (based on 383 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00214 (0.00174 - 0.00263), b=3.24 (3.19 - 3.29), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (Ref. 69278):  3.7   ±0.6 se; Based on diet studies.
Generation time: 5.7 ( na - na) years. Estimated as median LN(3)/K based on 1 growth studies.
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):  Moderate to high vulnerability (51 of 100) .
価格帯 (Ref. 80766):   Medium.