You can sponsor this page

Brycinus nurse (Rüppell, 1832)

Nurse tetra
Upload your 写真 and ビデオ
Pictures | グーグルの画像
Image of Brycinus nurse (Nurse tetra)
Brycinus nurse
Picture by KMFRI

分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

条鰭類 > Characiformes (Characins) > Alestidae (African tetras)
Etymology: Brycinus: Greek, ebrykon, brykomai = to bite, to gnaw (Ref. 45335);  nurse: rüppellii.  More on author: Rüppell.

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 外洋の; pH range: 6.0 - 7.8; dH range: ? - 30; potamodromous (Ref. 51243).   Tropical; 23°C - 27°C (Ref. 2060)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Africa: widely distributed in West Africa (Ref. 2880, 81279). In Lower Guinea present in Cross and Mémé rivers (Ref. 80279). Also in Chad basin (Ref. 367, 81279) and Nile River (Ref. 28714, 31439, 58460) up to Lake Albert (Ref. 4903, 42019).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 8.9, range 22 - ? cm
Max length : 25.0 cm TL オス/雌雄の選別がない; (Ref. 3799); 最大公表体重: 200.00 g (Ref. 3799)

簡単な記述 形態学 | 形態計測学

肛門の骨 0; 臀鰭: 13 - 18. Diagnosis: fronto-parietal fontanel absent in adults, sometimes pore-like in juveniles, disappearing with growth; dorsal fin origin at about same level as pelvic fin insertion; sexual dimorphism affecting anal fin shape; 24-34 lateral line scales; 5.5 scales between lateral line and dorsal fin; 10-15 anal fin branched rays; 14-20 gill rakers on lower limb of first gill arch; 8 teeth in outer premaxillary row (Ref. 2880, 80290, 81279). Snout short, more than 3x head length; head length/snout length 3.6-4.3; 10-11.5 predorsal scales; flanks without lateral band; adults medium-sized (Ref. 80290).

生物学     用語集 (例 epibenthic)

Inhabits rivers, lakes, irrigation canals and fringing vegetation; feeds on zooplankton, Caridina, insects, snails and vegetation (Ref. 28714). Dwarf populations are described in lake basins: Lake Turkana, B. n. nana Pellegrin, 1935 and Lake Chad, B. n. dageti Blache and Miton, 1960 (see Ref. 2880).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

Paugy, D. and S.A. Schaefer, 2007. Alestidae. p. 347-411. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) Poissons d'eaux douces et saumâtres de basse Guinée, ouest de l'Afrique centrale/The fresh and brackish water fishes of Lower Guinea, west-central Africa. Vol. 1. Coll. Faune et Flore tropicales 42. Istitut de recherche pour le développement, Paris, France, Muséum nationale d'histoire naturelle, Paris, France and Musée royale de l'Afrique centrale, Tervuren, Belgique. 800 p. (Ref. 80290)

IUCNのレッドリストの状況は (Ref. 120744)

  絶滅危惧 (EN) (B1ab(ii,iii)+2ab(ii,iii)); Date assessed: 15 October 2006

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: 少数商業の; 水族館・水槽: 商業
FAO(Publication : search) | FishSource |

より多くの情報

共通名の
類義語
代謝
捕食動物
生態毒性
繁殖
成熟
放精
卵の集合体
生産力

卵の開発
参考文献
水産養殖
水産養殖の紹介
緊張
遺伝子の
対立遺伝子頻度
遺伝
病気
行列
Mass conversion
協力者
画像
Stamps, Coins Misc.

シガテラ(食中毒の名前)
速度
泳ぐ 型式
カマ
Otoliths

視覚

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

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01318 (0.00851 - 0.02041), b=2.96 (2.84 - 3.08), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  2.5   ±0.2 se; Based on diet studies.
回復力 (Ref. 120179):  高い, 15か月以下の倍増期間の最小個体群 (K=0.41-0.92; tm=1; Fec < 1,000).
弱み (Ref. 59153):  Low to moderate vulnerability (29 of 100) .
価格帯 (Ref. 80766):   Unknown.