This website uses cookies to enhance your browsing experience and ensure the functionality of our site. For more detailed information about the types of cookies we use and how we protect your privacy, please visit our Privacy Information page..
×
Cookie Settings
This website uses different types of cookies to enhance your experience. Please select your preferences below:
Protopterus annectens, West African lungfish : fisheries, aquaculture
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
成熟度: 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)
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).
Body shape (shape guide): elongated; Cross section: circular. 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)
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).
Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 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)
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)
Phylogenetic diversity index (參考文獻 82804): PD50 = 0.6562 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00155 - 0.00977), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 3.8 ±0.64 se; based on food items.
