Neoraja stehmanni, African pygmy skate

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Neoraja stehmanni (Hulley, 1972)

African pygmy skate
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Neoraja stehmanni   AquaMaps   Data sources: GBIF OBIS
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Image of Neoraja stehmanni (African pygmy skate)
No image available for this species;
drawing shows typical species in Rajidae.

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: Neoraja: Greek, neos = new + Latin, raja = fish, Raja sp. (Ref. 45335).

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

; 海洋 深海底的; 深度上下限 102 - 1025 m (Ref. 5578). 深水域; 29°S - 40°S

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

Southeast Atlantic: off the Orange River mouth to south of the Agulhas Bank, South Africa.
東南大西洋: 外海的對南非的 Agulhas 邊坡南方的橘河嘴。

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 37.6 cm TL 雄鱼/尚未辨别雌雄; (Ref. 106604)

简单描述 型态特徵 | 形态测量图

A dwarf softnose skate with a bluntly pointed snout and very large close-set eyes; tail longer than body in adult; pectoral disc angular with rounded corners, and anterior edges more undulated in adult male than in female; large thorns around eyes, on shoulders, and in interrupted single row from back to dorsal fins (Ref. 5578). Brownish-grey above, with 6-7 crossbars on tail; underside pale with dark brown areas along the front and rear edges of disc, on snout and on underside of tail (Ref. 5578).
一个矮小的软鼻 鱼具有一个顿尖的吻与非常大的靠拢在一起眼; 尾部较长超过身体在成鱼中; 胸盘有角的与圆角 , 与前缘在雄性成鱼中较波浪状超过母鱼; 眼的周围大刺, 在肩上, 而且形成中断的一列从背部到背鳍.(参考文献 5578) 背面灰褐色的, 在尾部上有 6-7 交叉的条纹; 下面灰白的有深褐色的在吻与尾巴下上,区域沿着体盘的前面与后缘.(参考文献 5578)

生物学特性     字汇 (例如 epibenthic)

Found on the upper slope (Ref. 5578). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Probably taken by hake trawlers (Ref. 5578).

栖息于上层斜坡了。 (参考文献 5578) 卵生的.(参考文献 50449) 卵在贝壳上有像触角一样的突出。 (参考文献 205) 可能被鳕鱼底拖网捕获。 (参考文献 5578)

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).東南大西洋: 外海的對南非的 Agulhas 邊坡南方的橘河嘴。

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. 125652)

  最不相关 (LC) ; Date assessed: 24 April 2018

CITES

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 |

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生态毒物学
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孕卵数

卵的发育
年龄范围
成长
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形态测量图
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Otoliths
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眼睛色素

工具

特别资料

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网络资源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因组, 核苷酸 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | 动物学的记录

Estimates based on models

Preferred temperature (Ref. 115969): 6.1 - 12.1, mean 10.8 °C (based on 9 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00143 - 0.00636), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245).
营养阶层 (Ref. 69278):  3.7   ±0.6 se; based on size and trophs of closest relatives
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (28 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .