Raja straeleni, Spotted skate : fisheries, gamefish

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Raja straeleni Poll, 1951

Spotted skate
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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 straeleni   AquaMaps   Data sources: GBIF OBIS
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Image of Raja straeleni (Spotted skate)
Raja straeleni
Picture by Zsilavecz, G.

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) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335);  straeleni: Named after V. Van Straelen, director of IRSNB, Belgium (Ref. 377).  More on author: Poll.

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

; 海 底生の; 海洋回遊性; 深さの範囲 80 - 800 m (Ref. 11284), usually 100 - 300 m (Ref. 26999).   Tropical; 15°N - 30°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: Rio de Oro, Western Sahara to South Africa.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL オス/雌雄の選別がない; (Ref. 26999); 67.0 cm TL (female); 最大公表体重: 1.4 kg (Ref. 377); 最大公表体重: 1.4 kg

簡単な記述 形態学 | 形態計測学

A black-spotted skate with a blunt, angular snout, a long, stout tail, and a broad angular disc; strong thorns on upper surface of disc and tail at all stages, sometimes on underside in large individuals (Ref. 5578). Brown to grey dorsally, with small to large black spots, whorls and blotches; many with gold and black, traversely oblong eyespot on each pectoral base; white ventrally with no dark pores (Ref. 5578). Juveniles have no dark spots above (Ref. 2708).

生物学     用語集 (例 epibenthic)

Found in shallow enclosed bays and on the slope (Ref. 5578). Feeds on invertebrates, bony fishes and fish offal. Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Caught by shore and ski-boat anglers and by hake trawlers. Pectoral fins sold as 'skate wings' (Ref. 5578). Undergoes regular migration, towards the coast during the warm season and towards deep waters in winter (Ref. 5377).

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).

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. 123251)

  欠足データ (DD) ; Date assessed: 05 September 2003

CITES (Ref. 123416)

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 - Publication: search | FishSource |

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
BRUVS
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
Nutrients
Mass conversion
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シガテラ(食中毒の名前)
速度
泳ぐ 型式
カマ
Otoliths

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Estimates based on models

Preferred temperature (Ref. 115969): 10.2 - 15.7, mean 12.3 °C (based on 76 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00288 (0.00131 - 0.00635), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.0   ±0.62 se; based on food items.
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 vulnerability (45 of 100) .
価格帯 (Ref. 80766):   Medium.