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Tilapia guinasana Trewavas, 1936

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

条鰭類 > Perciformes (Perch-likes) > Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Tilapia: Bechuana, African native thiape = fish (Ref. 45335).  More on author: Trewavas.

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

; 新鮮な水 底生の漂泳性; pH range: 7.0 - 7.8; dH range: ? - 15.   Tropical; 22°C - 26°C (Ref. 2059); 19°S - 21°S

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: endemic to Lake Guinas, Namibia. Introduced to Lake Otjikoto and several reservoirs in Namibia. Also occurs in subterranean rivers.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL オス/雌雄の選別がない; (Ref. 6465)

生物学     用語集 (例 epibenthic)

Found in deep sinkhole lakes (100 m deep or more, e.g. introduced population in Lake Otjikoto, Namibia) with moderately clear water and with water temperatures ranging from 19 to 27°C (Ref. 6465). Omnivorous (Ref. 52307), but feeds mainly on algae and diatoms (Ref. 6465, 52307). Generally congregate, breed and feed from the near-vertical shores. Use narrow shelves for breeding, with established and defended territories, both parents guard and tend eggs. Threatened due to depletion of local groundwater resources and impact of introduced species (Ref. 7248). Individuals tend to display different color patterns ranging from pure black to mottled black and blue, pink and white (Ref. 27829). Biparental open-spawning species (Ref. 52307).

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

Nests are built on narrow rocky ledges and competition for these nest sites is very strong.

主な参考文献 Upload your references | 参考文献 | コーディネーター : Kullander, Sven O. | 協力者

Teugels, G.G. and D.F.E. Thys van den Audenaerde, 1991. Tilapia. p. 482-508. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 5163)

IUCNのレッドリストの状況は (Ref. 120744)

  絶滅寸前の危機的状況 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 01 March 2007

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

水産業: ; 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
Age/Size
成長
体長-重さ
Length-length
体長組成
形態計測学
形態学
幼生
幼生の動力
補充
豊度
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

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インターネットの情報源

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00684 - 0.03200), b=2.98 (2.81 - 3.15), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  2.0   ±0.00 se; Based on food items.
回復力 (Ref. 120179):  高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
弱み (Ref. 59153):  Low vulnerability (15 of 100) .
価格帯 (Ref. 80766):   Unknown.