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Perciformes/Notothenioidei (Icefishes) >
Nototheniidae (Cod icefishes) > Pleuragrammatinae
Etymology: Pleuragramma: Greek, pleura = side, ribe + Greek, gramma = letter, signal (Ref. 45335); antarcticum: Named after the region in which this is common (Ref. 11892).
More on author: Boulenger.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 pelagic-oceanic; 深さの範囲 0 - 1000 m (Ref. 127764). Polar; ? - 2°C (Ref. 6390); 60°S - 78°S, 180°W - 180°E
Southern Ocean: Antarctic Peninsula, South Shetland, Elephant, South Orkney islands, Weddell, Bellingshausen, Ross and Davis seas, Oates, Adélie, Wilhelm and other coasts of East Antarctica to Prydz Bay.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ?, range 13 - ? cm
Max length : 26.6 cm TL オス/雌雄の選別がない; (Ref. 124149); common length : 15.0 cm TL オス/雌雄の選別がない; (Ref. 2121); 最大公表体重: 200.00 g (Ref. 6390); 最大記録サイズ: 20 年 (Ref. 5216)
背面の脊椎 (合計) : 6 - 8; 背鰭 (合計) : 35 - 38; 肛門の骨: 0; 臀鰭: 36 - 39; 脊つい: 52 - 56. Pre-opercular-mandibular canal pores 9 (rarely 10), with 3 (rarely 4) on the mandible. Infraorbital canal with 4+2 pores; lateral line organs (neuromasts) present exposed region between the canal segments, the normal number probably being 4 (rarely 5), but some or all are often missing. Supraorbital canal with 3+1 pores (a second, more posterior pore rarely present in postero-dorsal section); between these 2 supraorbital canal segments is a trough divided by 3 low transverse ridges into 4 shallow depressions; on each ridge is a neuromasts organ. Temporal canal with 1+4 pores; between the 2 segment lies a single exposed neuromast. Supratemporal canal with 1+1 pores; no traces of neuromasts were found in the intervening regions.
Color: In life, pink with a silvery hue, the dorsal surface slightly darker. All fins pale, with clear hyaline membranes. The body becomes silvery with a darker dorsum only after death (Ref. 28937).
Body shape (shape guide): fusiform / normal; Cross section: oval.
Regarded as the only truly pelagic fish in Antarctic waters (Ref. 6390). Larvae and postlarvae occur between 0 to 135 m; juveniles 50 to 400 and adults below 400 m (Ref. 5179). Postlarvae feed mainly on eggs and larvae of copepods; juveniles mainly on copepods, but take also eggs and larvae of euphausiids, polychaetes and chaetognaths (Ref. 5179). Larger items are ingested with increase in size (Ref. 5179). Larval pelagic phase is long (Ref. 28916).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Mature females may spawn for the first time from around 7-9 years of age (Ref. 71843).
Dewitt, H.H., P.C. Heemstra and O. Gon, 1990. Nototheniidae. p. 279-331. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5179)
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: 少数商業の
用具
特記事項
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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) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00355 (0.00226 - 0.00557), b=3.22 (3.09 - 3.35), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245). |
栄養段階 (参照 69278) |
3.2 ±0.3 se; based on diet studies. |
回復力 (参照 120179) |
低い, 4.5年~14年の倍増期間の最小個体群 (K=0.14; tm=3-4; tmax=20; Fec=4,000). |
漁業の脆弱性 (Ref. 59153) |
Moderate to high vulnerability (52 of 100). 🛈 |
気候脆弱性 (Ref. 125649) |
High vulnerability (60 of 100). 🛈 |
価格帯 (Ref. 80766) |
High.
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栄養素 (Ref. 124155) |
Calcium = 31.8 [16.5, 72.3] mg/100g; Iron = 0.582 [0.268, 1.204] mg/100g; Protein = 16.1 [12.9, 19.0] %; Omega3 = 0.425 [0.227, 0.796] g/100g; Selenium = 11.9 [4.3, 26.7] μg/100g; VitaminA = 30.7 [6.6, 152.8] μg/100g; Zinc = 0.593 [0.386, 0.926] mg/100g (wet weight); based on nutrient studies. |