Protopterus annectens, West African lungfish : fisheries, aquaculture

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Protopterus annectens (Owen, 1839)

West African lungfish
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Protopterus annectens
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分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Dipneusti > Ceratodontiformes (Australian lungfishes) 南美肺魚目 (Australian lungfishes) > Protopteridae (African lungfishes) 非洲肺魚科 (African lungfishes)
Etymology: Protopterus: Greek, pro = first, in front of + Greek, pteron = wing, fin (Ref. 45335);  annectens: Named in honor of Prof. Dr. Brien (Ref. 40587).

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

; 淡水 居於水底的; 河川洄游 (Ref. 51243). 熱帶; 25°C - 30°C (Ref. 2059); 22°N - 30°S

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Africa: large Sahelian basins, Comoé River, Bandama River and some basins of Sierra Leone and Guinea (Protopterus annectens annectens) (Ref. 2834, 81261), upper Congo River, middle and lower Zambezi basin and all east coast rivers south to the Limpopo River (Ref. 3498, Ref. 13337), and Lake Rukwa (Ref. 13337) (Protopterus annectens brieni). Reports from the upper Cubango and Okavango system (Ref. 11970) unconfirmed (Ref. 52193, 120641).
非洲: 塞內加爾,尼日,甘比亞,佛塔河與查德流域, 也在蘇丹西部的沙立河的暫時支流中;(參考文獻 3498) 在象牙海岸與獅子山與幾內亞的特定流域的 Bandama 與 Comoe 流域.(參考文獻 2834)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 3799); 最大體重: 4.0 kg (Ref. 3069)

簡短描述 型態特徵 | 形態測量圖

Diagnosis: Protopterus annectens annectens has an elongate body and paired fins are long and filamentous (Ref. 81261). The trunk, with 34-37 ribs, is a bit longer and the tail a bit shorter compared to Protopterus annectens brieni (Ref. 40587).
突出的吻; 小的眼, 它的直徑 9-15 倍頭長.(參考文獻 2834) 偶鰭長而絲狀的.(參考文獻 367) 胸鰭有一個基部的穗邊是大約 3 倍於頭長; 腹鰭是大約兩倍頭長.(參考文獻 2834) 大體上, 3個外鰓從後端插入鰓縫與上方胸鰭了。 (參考文獻 2834) 在鰓蓋與肛門之間的 40-50個鱗片,36-40 背鰭起點前的身體的周圍.(參考文獻 2834) 34-37個對肋骨.(參考文獻 41467) 插入皮膚的圓形的鱗片.(參考文獻 3023) 背部兩側橄欖色或褐色的, 腹側邊顏色較淡; 在身體與鰭上的大的黑色或褐色的斑點除了在腹面上之外.(參考文獻 367)

生物學特性     字彙 (例如 epibenthic)

Obligate air-breathing (Ref. 126274); Obligate air-breathing (Ref. 126274). Found in marginal swamps and backwaters of rivers and lakes (Ref. 30488). Carnivorous, food includes molluscs (Ref. 30488), but also frogs, fish and seed (Ref. 13851). In Kenya it feeds mostly on plant material, like roots (Ref. 30558). Strongly associated with life of aquatic plants in terms of breeding and feeding ecologies; nests are made in weedy areas (Ref. 30558). Normally lives on flood plains and secretes, when these dry up during the dry season, a thin slime around itself which dries into a fragile cocoon; normally hibernates from the end of one wet season to the start of the next, buut can live in its cocoon for over a year (Ref. 3023, 30558). For hibernating the fish literally chews its way into the substrate ejecting mud out of its gill openings, reaching a depth of 3-25 cm below the surface depending on the length of the fish; the lungfish wriggles around, thereby hollowing out a bulb-shaped chamber and coming to rest with its nose pointing upward; they breathe air at the mouth of the chamber's tube and then sink back into the expanded part of the chamber (Ref. 36739). As the water disappears the respiratory trips cease; air reaches the fish via the tube to the surface (Ref. 36739). Under aquatic conditions this lungfish can survive more than three and half years of starvation, showing the same behavior - no motion and same body posture - as an aestivating specimen (Ref. 51339).

發現於河川與湖泊的沼澤邊緣與洄水區了。 (參考文獻 30488) 它是相連的強烈地以水生植物的生活根據繁殖與進食生態學.(參考文獻 30558) 巢在雜草叢生的區域被做。 (參考文獻 30558) 它通常靠沖積平原生活而且當這些變乾, 在乾季的時候的時候,它在它本身周圍分泌一個細的黏液那一個乾燥後成為一個纖細的囊袋; 它能在這種狀態中存在超過一年, 雖然通常它過冬只從一個濕季末到下一個的初始.(參考文獻 3023, 參考文獻 30558) 為照字面上地過冬魚咀嚼它的方法進入從它的鰓裂正在逐放泥的底部; 它可能在依據魚的長度而定的底部之下達到深度 3-25 公分; 肺魚蠕動周圍,藉此洞出一個球莖-形狀的腔室而且來到休息用它的方向朝上的鼻子; 他們進入腔室的被擴大的部份之內然後洗滌槽背面在腔室的管的嘴巴呼吸空氣。 (參考文獻 36739) 當水消失,呼吸的旅行停止; 空氣經由管對表面達到魚。 (參考文獻 36739) 也在水生的情況,這一個肺魚能存活超過三與飢餓的半年; 它顯示相同的行為 - 沒有運動與相同的身體姿勢 - 作為一個夏眠標本.(參考文獻 51339) 肉食性, 食物包括軟體動物 (參考文獻 30488), 也青蛙,魚與種子;(參考文獻 13851) 在肯亞,它大部分捕食植物, 像根.(參考文獻 30558)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Lungfish spawn in the swamps during the wet season, building a nest in which the eggs, white in colour and about 4 mm diameter, are laid; young are cared for by the males (Ref. 13851). Larvae hatch in eight days, and leave the nest in twenty days (Ref. 41544). Males of Protopterus annectens brieni excavate an U-shaped burrow to a depth of nearly 60 cm for spawning purposes; nest is usually placed amongst roots of aquatic vegetation where the male will attend to several females during the breeding season; males aerate the eggs with body and fin movements and provide protection to the young for some time after incubation (Ref. 13337).非洲: 塞內加爾,尼日,甘比亞,佛塔河與查德流域, 也在蘇丹西部的沙立河的暫時支流中;(參考文獻 3498) 在象牙海岸與獅子山與幾內亞的特定流域的 Bandama 與 Comoe 流域.(參考文獻 2834)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré, 1988. État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237. (Ref. 272)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 25 October 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

漁業: 低經濟; 養殖: 商業性
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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6602   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00155 - 0.00977), b=3.10 (2.88 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.8   ±0.64 se; based on food items.
回復力 (Ref. 120179):  低的, 最小族群倍增時間4.5 - 14 年 (tmax = 23 (in captivity); Fec < 1,000).
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
價格種類 (Ref. 80766):   Unknown.