Influence of environmental factors and farming technique on growth and health of farmed Kappaphycus alvarezii (cottonii) in south-west Madagascar

Ateweberhan, Mebrahtu; Rougier, Antoine; Rakotomahazo, Cicelin

doi:10.1007/s10811-014-0378-3

Cited by 43 publications

(24 citation statements)

References 18 publications

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“…Several later reports recorded Polysiphonia/Neosiphonia infestations occurring in additional regions of the Philippines and other Southeast Asian countries (Critchley et al 2004;Hurtado et al 2006;Vairappan 2006;Vairappan et al 2008), China (Pang et al 2012(Pang et al , 2015, and Madagascar (Ateweberhan et al 2015;Tsiresy et al 2016). The root cause of this widespread problem was likely that seemingly uninfected, otherwise 'healthy' seedlings were widely traded and dispersed commercially.…”

Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 99%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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Kappaphycus and Eucheuma, known collectively as 'eucheumatoids', are two related genera of red seaweeds which currently lead the rankings for volume of global production of farmed macroalgae. Since 2009, the combined cultivated volume of these carrageenophytes overtook that of the brown seaweeds Laminaria (Saccharina) and Undaria for global production tonnages, according to statistics of the Food and Agriculture Organization of the United Nations (FAO). The Southeast Asian region, particularly Indonesia, the Philippines, Malaysia, Tanzania, and East Africa are the major producers of eucheumatoid biomass. Despite several success stories of red seaweed cultivation and the economic and socioeconomic value of their ecosystem services, there remain a number of salutary lessons to be learned from 'agronomic' practices applicable to their extensive cultivation. These case studies should be further developed, analysed, and adopted as best-practice recommendations for future socioeconomic prosperity, as well as both economic and environmental sustainability. In this review, we propose the use of the term 'phyconomy' (i.e. large-scale production of marine macroalgae for economic and industrial purposes) as an alternative to the term agronomy (i.e. terrestrial plant production).

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Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 99%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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“…Water temperature also influences the accumulation of fouling species. In general, it has been recommended that cultured seaweeds are harvested before sea temperatures rise in spring and summer to avoid the negative impacts of seasonal biofouling (Park and Hwang 2012;Ateweberhan et al 2015;Marinho et al 2015;Førde et al 2016;Keesing et al 2016).…”

Section: Prevention and Inhibitionmentioning

confidence: 99%

Biofouling in marine aquaculture: a review of recent research and developments

et al. 2019

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Biofouling in marine aquaculture is one of the main barriers to efficient and sustainable production. Owing to the growth of aquaculture globally, it is pertinent to update previous reviews to inform management and guide future research. Here, the authors highlight recent research and developments on the impacts, prevention and control of biofouling in shellfish, finfish and seaweed aquaculture, and the significant gaps that still exist in aquaculturalists' capacity to manage it. Antifouling methods are being explored and developed; these are centred on harnessing naturally occurring antifouling properties, culturing fouling-resistant genotypes, and improving farming strategies by adopting more sensitive and informative monitoring and modelling capabilities together with novel cleaning equipment. While no simple, quick-fix solutions to biofouling management in existing aquaculture industry situations have been developed, the expectation is that effective methods are likely to evolve as aquaculture develops into emerging culture scenarios, which will undoubtedly influence the path for future solutions. ARTICLE HISTORY

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“…High surface seawater temperature and irradiation and associated epiphyte and disease infection are increasingly limiting growth of the alga in the shallow lagoonal environments that have traditionally been the favored locations for seaweed farming. Grazing pressure, particularly from algal-feeding rabbit fish and sea urchins is significant as well in limiting seaweed production (Eklöf et al 2006, Ateweberhan et al 2015). Shortages of seed and feed material are the main constraints to the production finfish, shellfish, and other invertebrates.…”

Section: Biophysical Factorsmentioning

confidence: 99%

Community based aquaculture in the western Indian Ocean: challenges and opportunities for developing sustainable coastal livelihoods

Ateweberhan¹,

Hudson²,

Rougier³

et al. 2018

E&S

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The small-fisheries social-ecological system in the western Indian Ocean (WIO) represents a typical social-ecological trap setting where very poor natural resources dependent coastal communities face local and global threats and engage in unsustainable practices of exploiting limited resources. Community-based aquaculture (CBA) has been implemented as an important alternative or supplementary income generating activity for minimizing the overdependence on marine natural resources and promoting biodiversity conservation. Despite its proliferation throughout the WIO region in recent decades, little is known about the degree to which CBA activities have contributed to achieving the objectives of breaking the cycle of poverty and environmental degradation and promoting community development and biodiversity conservation. In order to improve understanding of common challenges and to generate recommendations for best practice, we assessed the most common CBA activities practiced in the region through literature review and workshop discussion involving practitioners and key stakeholders. Findings indicated that despite favorable environmental conditions for various CBA practices, the sector remains underdeveloped, with few activities delivering the intended benefits for coastal livelihoods or conservation. Constraints included a shortage of seed and feed supplies, low investment, limited technical capacity and skills, insufficient political support, and lack of a clear strategy for aquaculture development. These are compounded by a lack of engagement of local stakeholders, with decision making often dominated by donors, development agencies, and private sector partners. Many of the region's CBA projects are designed along unrealistically short time frames, driven by donors rather than entrepreneurs, and so are unable to achieve financial sustainability, which limits the opportunity for capacity building and longer-term development. There is little or no monitoring on ecological and socioeconomic impacts. Except for a few isolated cases, links between CBA and marine conservation outcomes have rarely been demonstrated. Realizing the potential of CBA in contributing toward food security in the WIO will necessitate concerted investment and capacity strengthening to overcome these systemic challenges in the sector. Lessons herein offer managers, scientists, and policy advisors guidance on addressing the challenges faced in building strategic development initiatives around aquaculture in developing countries.

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Influence of environmental factors and farming technique on growth and health of farmed Kappaphycus alvarezii (cottonii) in south-west Madagascar

Cited by 43 publications

References 18 publications

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Biofouling in marine aquaculture: a review of recent research and developments

Community based aquaculture in the western Indian Ocean: challenges and opportunities for developing sustainable coastal livelihoods

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