Limits of tilapia aquaculture for rural livelihoods in the Solomon Islands

Harohau, Daykin, Blythe, Jessica, Sheaves, Marcus, and Diedrich, Amy (2020) Limits of tilapia aquaculture for rural livelihoods in the Solomon Islands. Sustainability, 12. 4592.

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Increasing pressure on coastal fisheries poses serious threats to local livelihoods and the food security of Pacific Islanders. In response, governments and development agencies have explored tilapia pond aquaculture as an alternative fish production source. Yet, evidence to date on the impact of tilapia aquaculture on rural livelihoods has been inconclusive. Drawing on the sustainable livelihood framework, we analysed the contribution of Mozambique tilapia (Oreochromis mossambicus) aquaculture to the livelihood assets and outcomes of 40 rural farmers in Solomon Islands. First, results showed that 53% of tilapia farmers were satisfied with tilapia aquaculture’s contribution to their human and social assets, while only 28% and 13% were satisfied with its contribution to their physical and financial assets, respectively. Tilapia aquaculture’s contribution to farmers’ natural assets was also limited. Second, and most importantly, there was an insignificant contribution of tilapia aquaculture to food and income security. Our results demonstrate that tilapia farmers rarely consumed tilapia, with only two of the 40 households having consumed tilapia in the seven days prior the interview. Moreover, only eight tilapia farmers sold their tilapia, which contributed 0.002–0.5% of their total weekly revenue. We argue the limited contribution of tilapia aquaculture to food and income stems from the low productivity of the available tilapia species and the low local demand for tilapia at rural markets. Given the current context of declining coastal fisheries and food insecurity concerns in rural Pacific Islands, it is unlikely that the current form of Mozambique tilapia aquaculture will be able to achieve its objective of addressing food and income security as a complement to coastal fisheries.

Item ID: 64340
Item Type: Article (Research - C1)
ISSN: 2071-1050
Keywords: tilapia; aquaculture; Pacific Islands; sustainable livelihood framework; Solomon Islands; food security; income security
Copyright Information: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Funders: Australian Centre for Agricultural Research (ACIAR)
Projects and Grants: ACIAR John Allwright Fellowship Scheme
Date Deposited: 09 Sep 2020 11:14
FoR Codes: 30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3005 Fisheries sciences > 300501 Aquaculture @ 40%
41 ENVIRONMENTAL SCIENCES > 4104 Environmental management > 410404 Environmental management @ 40%
45 INDIGENOUS STUDIES > 4515 Pacific Peoples environmental knowledges > 451505 Pacific Peoples fisheries and customary fisheries @ 20%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969999 Environment not elsewhere classified @ 50%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8301 Fisheries - Aquaculture > 830199 Fisheries - Aquaculture not elsewhere classified @ 50%
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