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Protopterus dolloi, Slender lungfish : fisheries
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Protopterus dolloi
Picture by
Bekins, R.
Dipneusti (lungfishes) >
Ceratodontiformes
(Australian lungfishes) >
Protopteridae
(African lungfishes)
Etymology:
Protopterus:
Greek, pro = first, in front of + Greek, pteron = wing, fin (Ref.
45335
)
;
dolloi:
Named after Louis Dollo, for his work on the phylogeny of the lungfishes (Ref.
41613
)
.
More on author:
Boulenger
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Africa: widespread in the lower and middle Congo River basin (Ref.
3498
,
40587
,
81627
,
104724
). Also known from the Ogowe, Kouilou-Niari and Loeme rivers (Ref.
3498
,
40587
,
81627
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 130 cm TL male/unsexed; (Ref.
3498
); max. published weight: 11.0 kg (Ref.
41589
)
Short description
Morphology
|
Morphometrics
Diagnosis: Body cylindrical and more elongate than in other
Protopterus
species (Ref.
81627
). Pectoral and pelvic fins filamentous (Ref.
40587
). About 85-95 scales on the longitudinal line between operculum and anus (Ref.
104724
).
Obligate air-breathing (Ref.
126274
);
Protopterus dolloi
is not aestivating in cocoons during the dry-season, because the habitat in which it lives is never completely dry (Ref.
81627
); although it never lost the capability to aestivate (Ref.
40587
). Therefore, the tunnel which it digs is not for hibernation but functions as a protected chamber during reproduction, which takes place in the dry season (Ref.
81627
). The male guards the eggs and larvae in the nest, which is built in the mud of the swamps, while the females can be found in the open water of the rivers (Ref.
41587
,
81627
). The food of
Protopterus dolloi
are fishes and insects, but during the time of reproduction its food is more vegetarian (Ref.
40587
,
46852
).
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Nests are found from June until October; the male guards the eggs and young (Ref.
40587
).
Boden, G.
, 2007. Protopteridae. p. 165-167. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref.
81627
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
16 February 2009
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 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
).
Trophic level (Ref.
69278
): 3.2 ±0.40 se; based on food items.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (Assuming tmax > 30).
Fishing Vulnerability (Ref.
59153
): Very high vulnerability (78 of 100).
Price category (Ref.
80766
):
Unknown
.
Nutrients (Ref.
124155
): Calcium = 34.6 [7.9, 105.9] mg/100g; Iron = 0.98 [0.38, 4.94] mg/100g; Protein = 3.18 [0.00, 7.00] %; Omega3 = 0.247 [0.082, 0.731] g/100g; Selenium = 78.3 [23.7, 253.2] μg/100g; VitaminA = 18.9 [6.9, 48.5] μg/100g; Zinc = 1.29 [0.66, 2.50] mg/100g (wet weight);
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