Amblyraja georgiana (Norman, 1938)

Antarctic starry skate
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Amblyraja georgiana   AquaMaps   Data sources: GBIF OBIS
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Image of Amblyraja georgiana (Antarctic starry skate)
Amblyraja georgiana
Picture by Reyes, P.

分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Etymology: Amblyraja: Greek, amblys = darkness + Latin, raja, -ae = ray (Raja sp.) (Ref. 45335).  More on author: Norman.

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

; 海 深海魚; 深さの範囲 20 - 350 m (Ref. 58839).   Deep-water; 45°S - 74°S, 120°W - 53°E (Ref. 114953)

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

Southeast Pacific: Chile (Ref. 27540). Southern Ocean: around South Georgia Island and on the ridge westward towards Black Rocks. Occasionally seen on the Scotia Ridge.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 115 cm TL オス/雌雄の選別がない; (Ref. 114953)

生物学     用語集 (例 epibenthic)

Found on continental and insular shelves, as well as upper slopes. Feeds mainly on small benthic invertebrates (Ref. 114953). Oviparous (Ref. 205). Reaches maturity at 80-90 cm TL; birth size at ca. 20 cm TL (Ref. 114953). 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 capsule measures 116.5 mm long and 80.0 mm wide (Ref. 41249). Utilized as fishmeal and possibly not utilized for human consumption due to extreme roughness of its squamation (Ref. 5159).

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). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs have horn-like projections on the shell (Ref. 205).

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. 119314)

  欠足データ (DD) ; Date assessed: 06 September 2004

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 食糧水産
FAO(水産業: 代謝; publication : search) | FishSource | 私達の周りの海

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シガテラ(食中毒の名前)
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インターネットの情報源

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Estimates of some properties based on models

Preferred temperature (Ref. 115969): -1.4 - 0.5, mean -0.6 (based on 28 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5010   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00562 (0.00272 - 0.01163), b=3.12 (2.93 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.2   ±0.3 se; Based on size and trophs of closest relatives
回復力 (Ref. 69278):  低い, 4.5年~14年の倍増期間の最小個体群 (Assuming tm>5).
弱み (Ref. 59153):  High vulnerability (65 of 100) .
価格帯 (Ref. 80766):   High.