Chimaera opalescens Luchetti, Iglésias & Sellos 2011
Opal chimaera
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Chimaera opalescens
Picture by Iglesias, S.P.
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Picture by Iglesias, S.P.
分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
全頭亜鋼 (chimaeras) > Chimaeriformes (Chimaeras) > Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Chimaera: Latin, chimaera = marine monster, 1634 (Ref. 45335); opalescens: Name from the Latin opalus (opal), refers to the characteristic iridescent colouration of the fresh specimens, resembling the nacreous colours of the semi-precious stone opal.
Etymology: Chimaera: Latin, chimaera = marine monster, 1634 (Ref. 45335); opalescens: Name from the Latin opalus (opal), refers to the characteristic iridescent colouration of the fresh specimens, resembling the nacreous colours of the semi-precious stone opal.
Environment: milieu / climate zone / depth range / distribution range 生態学
; 海 深海魚; 深さの範囲 900 - 1400 m (Ref. 87424). Temperate; 57°N - 48°N, 6°W - 11°W
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Northeast Atlantic, along the slope to the west of the British Isles and France (Ref. 87424).
サイズ / 重さ / 年齢
Maturity: Lm ? range ? - ? cm
Max length : 96.8 cm TL オス/雌雄の選別がない; (Ref. 87424); 109.8 cm TL (female)
Max length : 96.8 cm TL オス/雌雄の選別がない; (Ref. 87424); 109.8 cm TL (female)
簡単な記述 形態学 | 形態計測学
Chimaera opalescens can be distinguished from its congeners by the following combination of characters: body evenly coloured, iridescent, varying from beige to tan in adults and bronzish in juveniles; unpaired fins brown to purple, uniformly coloured or with pale or whitish edges; iris black; claspers tripartite divided for one third of their length, not extending beyond the pelvic fins in adults; dorsal spine equal or shorter than first dorsal fin; ventral caudal lobe equal or deeper than the dorsal caudal lobe. Comparison of DNA sequences of the CO1 gene with those of related species supported C. opalescens as a distinct species (Ref. 87424).
Life cycle and mating behavior 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
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Luchetti, E.A., S.P. Iglésias and D.Y. Sellos, 2011. Chimaera opalescens n. sp., a new chimaeroid (Chondrichthyes: Holocephali) from the north-eastern Atlantic Ocean. J. Fish Biol. 79(2):399-417. (Ref. 87424)
人間に対する脅威
Harmless
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Estimates based on models
Preferred temperature (Ref. 115969): 7 - 9, mean 8.3 °C (based on 6 cells).
Phylogenetic diversity index (Ref. 82805): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00126 - 0.00759), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278): 3.7 ±0.6 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 (Preliminary K or Fecundity.).
弱み (Ref. 59153): High vulnerability (59 of 100) .