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Raja brachyura Lafont, 1871

Blonde ray
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Native range | All suitable habitat | Point map | Year 2100
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Raja brachyura   AquaMaps   Data sources: GBIF OBIS
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Image of Raja brachyura (Blonde ray)
Raja brachyura
Picture by Bergmann, M.

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates) > Rajinae
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range 生态学

; 海洋 居于水底的; 深度上下限 10 - 380 m (Ref. 6808).   溫帶; 60°N - 21°N, 18°W - 24°E

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

Eastern Atlantic: Shetland Islands to Morocco, Rio de Oro (Western Sahara), and Madeira.
東大西洋: 雪特蘭群島到摩洛哥,里奧德奧羅 (西撒哈拉) 與馬得拉群島。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm 90.2, range 60 - ? cm
Max length : 120 cm TL 雄鱼/尚未辨别雌雄; (Ref. 41333); 125.0 cm TL (female); 最大体重: 14.3 kg (Ref. 40637)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 0; 臀棘 0; 臀鳍软条: 0. Upper surface wholly prickly, except in juveniles; underside only prickly along front margins of disc; orbital thorns separate; a regular median row of 40-45 thorns in juveniles and adult females, interrupted on back in males; 60-90 tooth rows; upper surface ochre, with numerous small dark spots to margins of disc, underside white (Ref. 3167).
上表皮长满刺又除了稚鱼; 下面只有多刺的沿着体盘的前缘; 眼窝的刺分开; 40-45 的一般中央列在稚鱼与雌性成鱼中的刺,在雄性中中断背面; 60-90个齿列; 上表皮黄土色, 有很多的对体盘边缘的小深色的斑点, 腹面白色的.(参考文献 3167)

生物学特性     字汇 (例如 epibenthic)

Found on sand and sand-rock bottoms (Ref. 6808). Feed on all kinds of benthic animals (Ref. 3167). 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 10.0-14.3 cm long and 5.8-9.0 cm wide (Ref. 41250). About 40-90 eggs are laid per individual every year (Ref. 41250).

栖息于沙子与砂岩底了。 (参考文献 6808) 捕食各种的底栖动物。 (参考文献 3167) 卵生的。 明显的成对出现。 幼鱼可能倾向跟随大的个体, 例如他们的母亲.(参考文献 205) 卵为长方形鞘囊具有僵硬的触角沈积在沙滩或泥滩的角落.(参考文献 205) 卵鞘是 10.0-14.3 公分长与 5.8-9.0 公分宽的.(参考文献 41250) 大约 40-90个卵生产每个别的每年.(参考文献 41250)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Spawning mainly from February to August with at least 30 egg-cases laid (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).東大西洋: 雪特蘭群島到摩洛哥,里奧德奧羅 (西撒哈拉) 與馬得拉群島。

主要参考文献 Upload your references | 参考文献 | 合作者 : McEachran, John | 合作者

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)

世界自然保护联盟红皮书 (Ref. 120744)

  临近濒危 (NT) ; Date assessed: 01 December 2008

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

渔业: 低经济; 游钓鱼种: 是的
FAO(渔业: 产生; publication : search) | FishSource | 周边海洋

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俗名
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生态毒物学
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孕卵数

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 7.1 - 16.2, mean 10.3 (based on 462 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00144 - 0.00348), b=3.27 (3.15 - 3.39), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.8   ±0.61 se; Based on food items.
回复力 (Ref. 69278):  低的, 最小族群倍增时间4.5 - 14 年 (K=0.12-0.19; tmax=15; Fec=40).
Prior r = 0.20, 95% CL = 0.11 - 0.36, Based on 1 stock assessment.
脆弱性 (Ref. 59153):  High to very high vulnerability (65 of 100) .
价格分类 (Ref. 80766):   Medium.