Reproductive Biology of the African Lungfish Protopterus annectens annectens (Owen, 1839) in the Mono River Basin of Benin, West Africa

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AuteurLEDEROUN, DJIMAN
AuteurVANDEWALLE, PIERRE
AuteurLALEYE, PHILIPPE A
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2020
ResumeIn the Mono River basin, the African lungfish, Protopterus annectens annectens is found in temporary ponds. This species is of great economic interest because of its high contribution to fisheries. As a result, this study aims at documenting some aspects of its biology. A monthly sampling was conducted during the exploitation period (the rainy season, i.e., July through October 2015). A total of 281 females and 215 males bought from local fishermen were used for the study of reproductive biology and to generate a length-weight relationship. The results show that the specimens’ growth is of the negative allometric type in both males and females. Mean sex ratio (1:0.77) favored females and was significantly different from a 1:1 ratio. Size at first sexual maturity was 29.6 and 30.4 cm total length in females and males, respectively. Frequency distribution of ovum diameter is bimodal, suggesting split-spawning during the breeding season. Absolute fecundity ranged from 447 to 1,200 eggs, while relative fecundity ranged from 4 to 9 eggs per gram of body weight.
Autre identifiantBECDB-8974
URIhttps://dspace.uac.bj/handle/123456789/8037
Languefr
Fait partie deJOURNAL OF FISHERIES AND ENVIRONMENT
SujetLength-weight relationship
SujetMono River
SujetProtopteridae
Sujetreproduction
SujetWest Africa
TitreReproductive Biology of the African Lungfish Protopterus annectens annectens (Owen, 1839) in the Mono River Basin of Benin, West Africa
TypeArticle

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