分類 / 名前
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) >
Carcharhiniformes (Ground sharks) >
Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus) (See ETYFish); iterum: Name 'iterum' from the Latin adverb meaning 'again, a second time, or once more', in allusion to the discovery of a new species of Apristurus.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 深海魚; 深さの範囲 540 - 560 m (Ref. 138162). Subtropical
Western Central Pacific: Australia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 53.7 cm TL (female)
簡単な記述
検索表 | 形態学 | 形態計測学
This species is distinguished from its congeners by the following set of characters: head moderately long and broad, head length 22.4% TL, interorbital space 7.0% TL; snout moderately long, pre-oral length 9.3% TL, preorbital length 9.5% TL; mouth very wide, its width 10.7% TL; pelvic-anal space 3.4% TL; anal fin large, base length 17.7% TL, posterior margin 12.5% TL; prepectoral length relatively long, 21.9% TL; labial furrows long, not confined to mouth corners, uppers longer than lowers (3.9 vs. 2.3% TL); enlarged denticles absent on upper or lower caudal fin; 35 monospondylous centra; 35 precaudal-diplospondylous vertebrae; precaudal centra 70; females mature by 537 mm TL; and egg case small (49.4-67.6 mm long), with 10-14 weakly T-shaped ridges on dorsal and ventral surfaces (Ref. 138162)
Body shape (shape guide): elongated.
Facultative air-breathing
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
White, W.T., H.L. O'Neill and S.A. Jayasinghe, 2025. Apristurus iterum, a new shark discovered based on egg case morphology and sequence data obtained from a formalin-fixed specimen. J Fish Biol. 1-17. (Ref. 138162)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 興味がない
用具
特記事項
XMLをダウンロードして下さい
インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00172 - 0.00698), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, １５か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Moderate vulnerability (41 of 100).
🛈
