Performance économique des chaînes de valeur des crevettes d’eaux douces au Bénin

Ollabodé, Nouroudine; Kpade, Patrice Cokou; Montchowui, Élie; Jabi, Jacob Afouda

doi:10.1051/cagri/2021005

Cited by 6 publications

(5 citation statements)

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“…Macrobrachium species are the most fished and traded among the exploited freshwater prawns’ species and constitute an important source of income and animal protein for local people (Houngbo et al., 2015; Ollabodé, 2019). Among these species, Macrobrachium macrobrachion , beside Macrobrachium vollenhoveni , is one of the two species most appreciated by Beninese consumers and economically important in terms of subsistence fishing (Koussovi et al., 2020; Ollabodé, 2019). Therefore, it is exploited intensively in all fisheries by artisanal fisherman for their subsistence or trade (Houngbo et al., 2015; Koussovi et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Geographical variation of the structure and population parameters of the freshwater prawnMacrobrachium macrobrachion(Herklots, 1851) in West African coastal hydrosystems: Insights from Benin

Koussovi

Niass

Montcho³

et al. 2023

Aquaculture Fish & Fisheries

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The freshwater prawn Macrobrachium macrobrachion (Herklots, 1851) is widely exploited in the Oueme Delta and the low Mono in Benin. The structure and population parameters of M. macrobrachion were evaluated to provide accurate scientific information for the better exploitation and rational management of freshwater prawn species in these areas. In Oueme Delta (1928 specimens) and low Mono (1045 specimens), 2973 specimens were sampled by artisanal and experimental fishing and analysed. The prawns were caught between January and December 2016. Total length and total weight were taken from each specimen. Global and monthly size–frequency distributions showed that recruitment in both populations takes place from August to October with a peak in September. The population parameters obtained by analysing frequency data with FiSAT II software (FAO‐ICLARM) showed an L∞ = 15.50 cm, K = 0.35 year−1, t0 = −0.56 year in Oueme Delta and L∞ = 15.30 cm, K = 0.45 year−1, t0 = −0.43 year in low Mono. The growth performance index (Φ′) was 1.93 and 2.02 for the Oueme Delta and low Mono populations, respectively. The exploitation rates (Emax and E0.5) suggest that more than half of the M. macrobrachion population was exploited in the two areas. Natural and fishing mortality rates showed that both populations of M. macrobrachion were vulnerable to natural and fishing death. The estimated first capture size (Lc) revealed that the majority of the two populations of M. macrobrachion were captured before they reached the size at first sexual maturity (L50), reflecting fishing pressure on small individuals and growth overfishing in both areas. These results showed that the used fishing gears and the fishing frequencies in both areas did not allow the majority of the prawn to grow and reproduce at least once before being caught.

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Section: Introductionmentioning

confidence: 99%

Geographical variation of the structure and population parameters of the freshwater prawnMacrobrachium macrobrachion(Herklots, 1851) in West African coastal hydrosystems: Insights from Benin

Koussovi

Niass

Montcho³

et al. 2023

Aquaculture Fish & Fisheries

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“…It is predominantly consumed as a food and condiment in many African countries, especially in rural areas. In Benin, M. macrobrachion is exploited and sold in three forms as fresh, smoked, and fried prawns and, therefore, are more profitable and provide an economic benefit (Ollabodé et al, 2021). It contributes 67.2% to the value chains (Houngbo et al, 2015; Ollabodé et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…In Benin, M. macrobrachion is exploited and sold in three forms as fresh, smoked, and fried prawns and, therefore, are more profitable and provide an economic benefit (Ollabodé et al, 2021). It contributes 67.2% to the value chains (Houngbo et al, 2015; Ollabodé et al, 2021). According to Koussovi et al (2019), this species is a suitable candidate for the development of native freshwater prawn aquaculture in Benin to meet demand from local and international consumers.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, M. macrobrachion has been studied in Benin for its introduction into aquaculture. These have been multidisciplinary studies on the exploitation (Koussovi et al, 2023), economic performance of value chains (Ollabodé et al, 2021), biology (Koussovi et al, 2019), ecology (Koussovi et al, 2020), and zootechnical parameters related to breeding (Koussovi, Adjahouinou, et al, 2021; Koussovi, Niass, et al, 2021). However, none of these studies have investigated the duration of zoea yolk resorption or the pattern of larval development.…”

Section: Introductionmentioning

confidence: 99%

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Yolk resorption and larval development in the brackish river prawn Macrobrachium macrobrachion under laboratory conditions: Perspectives for aquaculture

Koussovi,

Houssou,

Daves

et al. 2023

J World Aquaculture Soc

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Macrobrachium macrobrachion is an African native brackish river prawn with a high commercial value. Currently, there is little information on the post‐larval production of this species. Two experiments were conducted in the laboratory to develop production techniques for this species. The first experiment analyzed the duration of yolk resorption and the second described the larval stages. Yolk resorption was studied in 240 newly hatched larvae for 24 h based on the reduction in yolk area over time. For larval development stages, six breeding tanks containing 100 L with a density of 50 larvae/L were used. Larvae were fed a combination of Artemia nauplii, Brachionusplicatilis, and pelleted food (Larviva ProStart, Biomar Efico). The results have shown that the area of yolk reserves varied significantly in the hours after hatching. At 14 h after hatching, each larva resorbed approximately 85% of its yolk reserve, and at 18 h after hatching, each of them still had approximately 6.1%. Twelve larval stages were identified and described in three critical stages. M. macrobrachion larvae are lecithotrophic and need to start exogenous feeding at 14 h at the earliest and 18 h at the latest after hatching. These results are the first to highlight the potential for mass production of brackish river prawns.

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“…Indeed, statistical data clearly show that the quantity of shrimps exported from Benin has dropped from 630 tons in 2002 to 1.5 tons in 2009 [29]. Recent investigations have shown that shrimp exports from Benin remain almost non-existent due to poor sheries management [4,38,47]. For the moment, the real causes of this decline are not well understood.…”

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confidence: 99%

Evaluation of the Distribution of Shrimp Species Found in Southern Benin Through the Lake Nokoué-ocean Complex

Sintondji

Gozingan

Sohou

et al. 2021

Preprint

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BackgroundThe export of shrimp to the European Union was one of the mainstays of the Beninese economy. It is an income-generating activity for the populations living along lake Nokoué. The lack of a fisheries management strategy has caused a drastic decline in shrimp production in lake Nokoué since 2003. To remedy this problem, it is necessary to hypothesize on their spatio-temporal dynamics in the lake Nokoué-Cotonou channel complex. This is investigated by combining a literature review on their life cycles and habitat suitability with spatio-temporal evolution of salinity obtained from in-situ observations.ResultsThe literature review recognizes the presence in southern Benin of species of the genus Macrobrachium, Atya and Desmocaris (seven, two and one respectively) and five species of marine shrimps belonging to three genera: the genus Penaeus, the genus Holthuispenaeopsis and the genus Parapenaeus. From information on the ecology and physical environment it is shown that adults of the species of the genus Macrobrachium and genus Atya have a favorable environment in lake Nokoué from August to November, their larvae must remain in the lake from December to June to ensure their survival. The species of the genus Desmocaris, which carry out their entire life cycle in fresh water, can stay in lake Nokoué from August to November. The species of the genus Penaeus can find a favorable environment in lake Nokoué from December to June but their larvae can only survive in the sea. Finally, the species of the genus Holthuispenaeopsis and Parapenaeus spend their entire life cycle at sea.ConclusionsThis work allows understanding contrasted life cycles of shrimp’s genera Macrobrachium and Atya compared to Penaeus in a complex ecosystem characterized by strong saline variation. This research allows to predict the presence or absence of shrimp’s genera Macrobrachium, Atya, Desmocaris and Penaeus in a lake system, on the basis of salinity distribution, for a sustainable management of their exploitation.

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Performance économique des chaînes de valeur des crevettes d’eaux douces au Bénin

Cited by 6 publications

References 5 publications

Geographical variation of the structure and population parameters of the freshwater prawnMacrobrachium macrobrachion(Herklots, 1851) in West African coastal hydrosystems: Insights from Benin

Geographical variation of the structure and population parameters of the freshwater prawnMacrobrachium macrobrachion(Herklots, 1851) in West African coastal hydrosystems: Insights from Benin

Yolk resorption and larval development in the brackish river prawn Macrobrachium macrobrachion under laboratory conditions: Perspectives for aquaculture

Evaluation of the Distribution of Shrimp Species Found in Southern Benin Through the Lake Nokoué-ocean Complex

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