分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Irolita: From Irolita, a princess in love with prince Parcinus. The beauty of the princess was worthly the world´s admiration. Mythology.
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 50 - 200 m (Ref. 6871). Temperate; 29°S - 36°S, 113°E - 136°E (Ref. 114953)
Eastern Indian Ocean: south-western Australia.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 46 - ? cm
Max length : 52.0 cm TL オス/雌雄の選別がない; (Ref. 6871)
Occur over soft bottoms of the continental shelf (Ref. 7300, 75154). 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 5.1-7.6 cm long and 3.2-3.8 cm wide (Ref. 41308). Males reaches maturity at ca. 46 cm TL. Occassionally caught as bycatch and typically discarded (Ref. 114953).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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).
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)
Human uses
用具
特記事項
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 15 - 18.5, mean 16.6 °C (based on 27 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00273 - 0.01106), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (41 of 100).
