Raja polystigma, Speckled ray

Raja polystigma Regan, 1923

Speckled ray
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Raja polystigma   AquaMaps   Data sources: GBIF OBIS
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Raja polystigma
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分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | 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.

Environment: milieu / climate zone / depth range / distribution range 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 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 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。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 3167)

生物学特性     字汇 (例如 epibenthic)

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)

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). 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 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. 123251)

  最不相关 (LC) ; Date assessed: 17 December 2014

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的





人类利用

FAO - Publication: search | FishSource |

更多信息

俗名
同种异名
新陈代谢
捕食者
生态毒物学
繁殖
成熟度
产卵场
产卵群集
孕卵数

卵的发育
年龄范围
成长
体长-体重
体长-体长
体长-频率
形态测量图
型态特徵
仔鱼
稚鱼动力学
入添量
丰度
BRUVS
参考文献
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养殖信息
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遗传学
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遗传率
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合作者
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速度
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鳃区
Otoliths
脑重体重比
眼睛色素

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Estimates based on models

Preferred temperature (Ref. 115969): 13.1 - 15.1, mean 14 °C (based on 40 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00170 (0.00095 - 0.00303), b=3.28 (3.13 - 3.43), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
营养阶层 (Ref. 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.
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (Fec=20).
脆弱性 (Ref. 59153):  High vulnerability (62 of 100) .
Nutrients (Ref. 124155):  Calcium = 40.9 [6.3, 141.4] mg/100g ; Iron = 0.94 [0.25, 2.38] mg/100g ; Protein = 17.4 [14.4, 20.0] % ; Omega3 = 0.638 [0.235, 1.810] g/100g ; Selenium = 22.7 [6.5, 67.0] μg/100g ; VitaminA = 13.5 [5.0, 35.1] μg/100g ; Zinc = 0.695 [0.341, 1.567] mg/100g (wet weight);