Artisanal and Traditional Octopus Fisheries: Global Review of Capture Methods, Processing Technologies, Sustainability, and Food Security Implications
Abstract
Artisanal octopus fisheries constitute a vital component of coastal economies worldwide, employing millions of fishers and providing essential protein sources across diverse communities, contributing significantly to food security in developing coastal nations. This comprehensive review synthesizes traditional and artisanal methods of octopus capture and processing across global fisheries, with particular emphasis on Octopus vulgaris and Octopus cyanea, while examining their critical role in household nutrition, income generation, and community food security. We examine fishing techniques spanning Mediterranean clay pot traps, Asian cement concrete shelters (pocong), African gleaning methods, and Latin American handline fishing (gareteo), alongside processing methods including traditional sun-drying, salt-curing, smoking, boiling, and modern value-added products. Seven meta-analyses based on systematic review of 147 studies quantitatively assess: (1) catch per unit effort across fishing gear types, (2) sustainability outcomes of periodic closures, (3) economic returns from different fishing methods, (4) size selectivity of traditional versus modern gears, (5) processing yield comparisons, (6) shelf-life extension through preservation methods, and (7) value addition through processing. Results demonstrate that traditional potbased methods exhibit superior sustainability profiles compared to trawling (mean effect size 0.35, 95% CI [0.25-0.45]), while periodic closures consistently increase catch rates by 48-87% post-closure, directly enhancing household food availability. Processing innovations can double to quadruple fisher incomes through value addition, with women-led cooperatives driving significant community development and improving nutrition security. Octopus provides high-quality protein (11-13% wet weight), essential amino acids, omega-3 fatty acids, and micronutrients including iron, zinc, and vitamin B12, making it a crucial component of coastal food systems. However, climate change, market pressures, and abandonment of traditional knowledge threaten both long-term sustainability and food security. Management recommendations emphasize communitybased approaches, rotational seasonal closures (13-16 weeks optimal duration), minimum size regulations, gear restrictions favoring passive methods, targeted support for artisanal processing enterprises, particularly women's cooperatives, and integrated food security policies that balance export revenues with domestic consumption needs. Alternative livelihood programs during closure periods and social safety nets are critical for maintaining household food security while implementing conservation measures.
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Introduction
1.1 Global Significance, Economic Context, and Food Security Role: Octopus fisheries represent an increasingly critical component of global marine capture production and coastal food security systems, with more than twenty described species harvested from approximately 90 countries worldwide [1]. Global octopus production has demonstrated relatively steady growth, rising from 179,042 tonnes in 1980 to 355,239 tonnes in 2014, though recent years show concerning regional declines that threaten both economic stability and food security in dependent communities [2]. Approximately 88,000 tonnes are harvested annually by small-scale fisheries globally, supporting direct consumption by millions of people in coastal communities across Africa, Asia, and Latin America [11]. Unlike many finfish stocks facing severe overexploitation, coastal and shelf cephalopod populations, including octopuses, have shown increases over the past six decades, positioning octopus fisheries as potential alternatives to declining finfish resources [1].
The global octopus market demonstrates substantial economic value, estimated at approximately USD 2.26 billion in 2025 and projected to reach USD 2.97 billion by 2032 [3]. This growth reflects increasing consumer demand, particularly in Asian and European markets where octopus commands premium prices. The common octopus (Octopus vulgaris) and day octopus (Octopus cyanea) represent the most commercially significant species, supporting both subsistence and commercial fisheries across Mediterranean, Atlantic, Pacific, and Indian Ocean regions [2,4]. However, this economic opportunity creates intensified pressure on octopus populations, particularly in artisanal fisheries where regulatory frameworks may be limited or poorly enforced [5]. Export-oriented markets increasingly compete with domestic consumption needs, raising concerns about food security trade-offs in producing nations. Concerning trends include a 40% decline in African octopus catches between 1990 and 2012, driven primarily by Moroccan fishery declines from 52,338 tonnes (1990) to 18,411 tonnes (2012)—a two-thirds reduction that has directly impacted household food availability and nutrition in fishing communities [6]. European catches similarly decreased approximately 40% over the same period, forcing market adjustments and increased imports.
Conclusion
Artisanal octopus fisheries represent a nexus of biological productivity, cultural heritage, economic opportunity, food security, and conservation challenge. This comprehensive review, synthesizing traditional capture methods, processing technologies, nutritional contributions, and seven quantitative meta-analyses based on 147 studies, reveals several critical findings with implications for both sustainability and food security:
First, traditional passive gear (clay pots, cement shelters, handline gareteo) demonstrates superior sustainability profiles compared to intensive active methods (diving with compressors, bottom trawling), with moderate trade-offs in instantaneous catch rates compensated by greater consistency, selectivity, and long-term population viability. The meta-analysis confirmed a mean effect size of 0.35 (95% CI [0.25-0.45]) favoring pot-based methods over trawling for sustainability outcomes.
Second, periodic closures of 13-16 weeks duration consistently increase CPUE by 48-87% post-reopening, providing economically beneficial short-term management tools, though they cannot reverse long-term decline without complementary measures addressing broader pressures including climate change and market-driven intensification. The meta-analysis of 18 studies confirmed that these closures, when properly designed with food security safeguards, deliver both conservation and community benefits.
Third, processing value addition can double to quadruple fisher incomes while enhancing food security through product diversification, with women-led cooperatives in Indonesia and Kenya demonstrating practical pathways for combining economic development with conservation incentives and improved household nutrition. Investment in cold chain infrastructure, processing equipment, business training, and nutrition education emerges as a high-impact intervention with food security cobenefits. Octopus processing creates products suitable for both export markets and local consumption, enabling better balance between foreign exchange earnings and domestic food availability.
Fourth, abandonment of traditional knowledge and selective fishing practices in favor of intensive methods threatens both sustainability and cultural heritage. The shift from selective gareteo handline fishing to indiscriminate diving in Mexico exemplifies how market pressures can rapidly undermine centuries of traditional management.
Fifth, gender dimensions are profound but systematically undervalued, with direct food security implications. Women dominate processing, local trade, gleaning activities, and household food provisioning decisions while remaining excluded from formal management structures. This exclusion disconnects resource management from household nutrition outcomes. Genderresponsive policies ensuring women's participation in decision-making represent essential governance reforms for both equity and food security effectiveness. Women's control over octopus income and their nutritional knowledge position them as critical agents for translating marine resources into household food security.
References
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