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Bagrus docmak
画像によって de Vos, L.
画像 | 切手、コイン、その他 | グーグルの画像
画像によって de Vos, L.
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
> Siluriformes (Catfishes) > Bagridae (Bagrid catfishes)
Etymology: Bagrus: Mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp.) (Ref. 45335).
Etymology: Bagrus: Mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp.) (Ref. 45335).
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
; 新鮮な水 底生の漂泳性; pH range: 6.5 - 8.2; dH range: ? - 30; 深さの範囲 0 - 80 m (Ref. 34291), usually 0 - 70 m (Ref. 34291). Tropical; 21°C - 25°C (Ref. 2060)
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Africa: widely distributed throughout Tchad, Niger, Volta, Senegal (Ref. 57125), Mono, Oueme, Cross and Sanaga Rivers, as well as the Rift Valley Lakes Edward, George, Albert, Victoria and Tanganyika (Ref. 81641), but not Lake Kivu (Ref. 46152). Widely distributed in Nile system (Ref. 28714, 31439, 58460). In the Lukuga River (Lake Tanganyika outflow), known up to the Kisimba-Kilia rapids (Ref. 93587).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 22.7, range 20 - 25.9 cm
Max length : 127 cm TL オス/雌雄の選別がない; (Ref. 42492); common length : 62.0 cm TL オス/雌雄の選別がない; (Ref. 11248); 最大公表体重: 35.0 kg (Ref. 4537); 最大記録サイズ: 5 年 (Ref. 11248)
Max length : 127 cm TL オス/雌雄の選別がない; (Ref. 42492); common length : 62.0 cm TL オス/雌雄の選別がない; (Ref. 11248); 最大公表体重: 35.0 kg (Ref. 4537); 最大記録サイズ: 5 年 (Ref. 11248)
簡単な記述 検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 1; 背鰭 (合計) : 8 - 11; 肛門の骨: 0; 臀鰭: 11 - 14; 脊つい: 46 - 49. Diagnosis: head depressed (Ref. 43434), broad, about 1.3-1.6 times as long as wide (Ref. 28714, 30488, 57125), squarish when viewed from above (Ref. 28714), without rough texture (Ref. 3034). Head width measured at base of preopercle 58.9-71.8% head length; 12-16 gill rakers on first gill arch (Ref. 81641). Body slightly elongated, 5-6 times longer than deep (Ref. 7324, 57125, 81641). Four pairs of barbels (Ref. 34290). Premaxillary tooth plate 5-7 times longer than wide, a little shorter than and about as broad as the band of vomerine teeth (Ref. 2988). Premaxillary toothplate width less than 2.5 times in head length (Ref. 57125). Occipital process 3-5 times longer than wide (Ref. 57125, 81641). Predorsal length 2.4-2.7 times in standard length; 9-10 branched dorsal fin rays, not or only slightly filamentous (Ref. 57125, 81641). Long adipose dorsal fin present (Ref. 34290). Standard length/caudal peduncle length 2.4-2.7 (Ref. 57125). Upper lobe of caudal fin often with a short filament (Ref. 7324, 57125, 81641).
Body shape (shape guide): fusiform / normal; Cross section: circular.
Body shape (shape guide): fusiform / normal; Cross section: circular.
Inhabit lakes, swamps and rivers (Ref. 31256). Widespread in both shallow and deep water (Ref. 34291). Probably associated with rocky bottoms/coarse substrates (Ref. 27490). Mostly active during the night and the twilight hours (Ref. 2060). Juveniles may frequent exposed rocky shores (Ref. 12526). Feed on insects, crustaceans, molluscs and fish; some debris and vegetable matter may also be ingested (Ref. 28714). Moderately important as a food species in Lake Victoria, but becoming rare with the appearance of Nile perch (Ref. 4967). Catches decreased strongly in Lake Victoria after the Lates upsurge (Ref. 34291). Predation by Lates and competition with Lates (for haplochromines) may have played a role in the decline (Ref. 34291). A notably recovery in waters between 3m and 6m depth in Lake Victoria has been reported (Ref. 51900). Second most important food species in Lake Edward, Congo (Ref. 13302).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Distinct pairing (Ref. 205).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター | 協力者
Risch, L.M., 1992. Bagridae. p. 395-431. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres d'Afrique de l'Ouest. Tome 2. Coll. Faune Tropicale N° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren, Belgique and O.R.S.T.O.M., Paris, France. (Ref. 7324)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 商業; ゲームフィッシュ: はい
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用具
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特記事項
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インターネットの情報源
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モデルに基づく推定値
|
系統多様性指数 (参照 82804) |
PD50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.01023 (0.00793 - 0.01321), b=2.95 (2.88 - 3.02), in cm total length, based on LWR estimates for this species (Ref. 93245). |
|
栄養段階 (参照 69278) |
4.1 ±0.95 se; based on food items. |
|
回復力 (参照 120179) |
手段, １．４年～４．４年の倍増期間の最小個体群 (tm-2-3; tmax=5; K=0.06-0.35; Fec=2,000-774,000). |
|
漁業の脆弱性 (Ref. 59153) |
High vulnerability (57 of 100). 🛈 |
|
価格帯 (Ref. 80766) |
Unknown. |
|
栄養素 (Ref. 124155) |
Calcium = 31.3 [14.9, 70.7] mg/100g; Iron = 0.908 [0.503, 1.791] mg/100g; Protein = 16.8 [15.5, 18.2] %; Omega3 = 0.389 [0.125, 1.148] g/100g; Selenium = 116 [42, 289] μg/100g; VitaminA = 45.1 [12.5, 160.7] μg/100g; Zinc = 1.18 [0.76, 1.82] mg/100g (wet weight); |