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Raberinary Daniel
Institut d’Enseignement Supérieur de l’Anosy
Religion Humanities Education Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Artisanal Fisheries, Food Security, and Sustainable Resource Management in Coastal Communities of Southern Madagascar Saloa Taquidine Darousse; Raberinary Daniel; Mbola Mampiray Miandrito
Ite Ngabdi Vol. 2 No. 1 (2026): Ite Ngabdi
Publisher : ite ngabdi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61798/qg0s0a39

Abstract

Artisanal fisheries are fundamental to the livelihoods, food security, and economic resilience of coastal communities in southern Madagascar, yet increasing fishing pressure and environmental change threaten their long-term sustainability. This study examined the contribution of artisanal fisheries to household food security and sustainable resource management using a mixed-methods approach. Primary data were collected from 320 fishing households and 96 non-fishing households across six coastal communities through household surveys, fisheries landing observations, key informant interviews, and focus group discussions. Household food security was assessed using the Food Consumption Score (FCS) and the Household Food Insecurity Access Scale (HFIAS), while fisheries productivity was evaluated using Catch per Unit Effort (CPUE). Multiple linear regression was employed to identify the socio-economic determinants of household food security. The results indicate that fishing households generally achieved higher food security than non-fishing households, although a significant decline in CPUE suggests increasing pressure on marine resources. Livelihood diversification emerged as the strongest predictor of household food security, followed by fishing income and market accessibility. The findings highlight the need for integrated policies that combine sustainable fisheries management, livelihood diversification, and improved market access to enhance household resilience while ensuring the long-term sustainability of coastal fisheries in southern Madagascar.
Stock Assessment of Panulirus Homarus in Southeastern Madagascar Using a Rectified Virtual Population Analysis Raberinary Daniel; Dizano Arison Valerio; Assanaly Valencia; Mahatante Tsimanaoraty Paubert; Mara Edouard Remanevy
Ite Ngabdi Vol. 2 No. 1 (2026): Ite Ngabdi
Publisher : ite ngabdi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61798/9en4vy32

Abstract

Effective stock assessment is fundamental for the sustainable management of data-limited fisheries. This study assessed the stock status of the spiny lobster (Panulirus homarus) in southeastern Madagascar using a Rectified Virtual Population Analysis (VPA), a pseudo-cohort approach suitable for fisheries with limited age-structured data. Biological measurements of 5,624 individuals collected from artisanal fishery landings between 2018 and 2020 were combined with historical catch and fishing effort data from 2014 to 2020. Carapace length measurements were converted into annual age classes to reconstruct population abundance, estimate age-specific fishing mortality, and evaluate stock status through a yield-per-recruit (YPR) model. The reconstructed population consisted of ten age classes, with catches dominated by individuals aged two to three years. Fishing mortality was highest among lobsters aged two to five years, while population abundance declined progressively with increasing age. The YPR analysis indicated that the current exploitation level exceeds the biological reference point corresponding to the Maximum Sustainable Yield (MSY), demonstrating that the stock is already overexploited. These findings highlight the need to reduce fishing effort, strengthen compliance with minimum legal-size regulations and seasonal closures, promote selective fishing gears, and implement continuous biological monitoring. The study demonstrates that Rectified VPA provides a practical and reliable framework for assessing data-limited lobster fisheries and supports evidence-based management for the sustainable exploitation of P. homarus in southeastern Madagascar.
Co-Authors Assanaly Valencia Dizano Arison Valerio Mahatante Tsimanaoraty Paubert Mara Edouard Remanevy Mbola Mampiray Miandrito Saloa Taquidine Darousse