Raja polystigma Regan, 1923
Speckled ray
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Raja polystigma AquaMaps Data sources: GBIF OBIS |
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Raja polystigma
图片提供人 Ilkyaz, A.T.
照片 | 谷歌图片
图片提供人 Ilkyaz, A.T.
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Regan.
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Regan.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
海洋 居于水底的; 深度上下限 100 - 400 m (Ref. 3167). 亞熱帶的
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Northeast Atlantic: known only from the western Mediterranean, more common along the African coasts.
東北大西洋: 已知只來自地中海西部了, 更普遍沿著非洲海岸。
東北大西洋: 已知只來自地中海西部了, 更普遍沿著非洲海岸。
大小 / 重量 / 年龄
Found mainly on soft bottoms (Ref. 3167). Feed mainly on crustaceans and bony fishes depending on the sex, size and also partly with the season (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). About 20-62 eggs are laid by an individual in a year (Ref. 41314).
主要发现在软质底部了。 (参考文献 3167) 主要捕食依据性别、大小而定的甲壳动物与硬骨鱼类以及部分以季节.(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) 大约 20-62个卵在一年中被一个个体生产。 (参考文献 41314)
主要发现在软质底部了。 (参考文献 3167) 主要捕食依据性别、大小而定的甲壳动物与硬骨鱼类以及部分以季节.(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) 大约 20-62个卵在一年中被一个个体生产。 (参考文献 41314)
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Ripe females occurring mostly in the winter and deposit 20 to 62 egg-cases per year depending on size (Ref. 3167). Distinct pairing with embrace. Y oung may tend to follow large objects, such as their mother (Ref. 205).東北大西洋: 已知只來自地中海西部了, 更普遍沿著非洲海岸。
主要参考文献
上传您的参考资料 | 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)
CITES
Not Evaluated
对人类的威胁
无害处的
人类利用
渔业: 商业性
FAO - Publication: search | FishSource |
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基于模型的估算
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系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00282 (0.00175 - 0.00455), b=3.31 (3.18 - 3.44), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
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营养阶层 (参考文献 69278) |
3.3 ±0.5 se; based on diet studies. |
| Generation time | 10.0 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
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回复力 (参考文献 120179) |
低的, 最小族群倍增时间4.5 - 14 年 (Fec=20). |
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渔业脆弱性 (Ref. 59153) |
High vulnerability (62 of 100). 🛈 |
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价格分类 (Ref. 80766) |
Medium. |
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营养素 (Ref. 124155) |
Calcium = 26 [5, 122] mg/100g; Iron = 0.79 [0.21, 2.33] mg/100g; Protein = 18.2 [15.0, 21.1] %; Omega3 = 0.685 [0.212, 2.513] g/100g; Selenium = 24.4 [7.4, 76.1] μg/100g; VitaminA = 12.2 [4.4, 33.6] μg/100g; Zinc = 0.721 [0.352, 1.314] mg/100g (wet weight); |