Osmotic shock as alternative method to control Acanthaster planci

Rivera-Posada, Jairo, and Owens, Leigh (2014) Osmotic shock as alternative method to control Acanthaster planci. Journal of Coastal Life Medicine, 2 (2). pp. 99-106.

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Objective: To test six osmotic stressors as alternative methods to control Acanthaster planci outbreaks by exploiting their incapacity to tolerate drastic changes in osmolarity. Finding more effective ways to control A. planci outbreaks is one of the most immediate and effective ways by which to reverse rapid declines in the abundance of live coral cover in the Indo-Pacific.

Methods: A total of 10 mL of each of the following chemicals: sodium chloride, ethylenediaminetetraacetic acid, sodium carbonate, sodium cholate,sodium deoxycholate,urea and mannitol were injected into individual healthy sea stars to examine which chemicals induced disease and death.

Results: Four out of six chemicals used in this study induced disease. Sodium chloride, sodium cholate, sodium deoxycholate and ethylenediaminetetraacetic acid are capable of inducing death in injected sea stars offering an alternative option to control A. planci outbreaks.

Conclusions: Hyperosmotic stress is a viable alternative to control A. planci outbreaks as massive cell death results when acute hypertonicity exceeds a certain level.

Item ID: 34546
Item Type: Article (Research - C1)
ISSN: 2309-6152
Keywords: COTS, pest control, outbreaks, hyperosmotic stress, cell permeabilisation
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Funders: Department of Sustainability, Environment, Water, Population and Communities, National Environmental Research Program (NERP), Tropical Ecosystems Hub
Date Deposited: 14 Aug 2014 04:49
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0501 Ecological Applications > 050199 Ecological Applications not elsewhere classified @ 50%
06 BIOLOGICAL SCIENCES > 0606 Physiology > 060603 Animal Physiology Systems @ 50%
SEO Codes: 96 ENVIRONMENT > 9604 Control of Pests, Diseases and Exotic Species > 960402 Control of Animal Pests, Diseases and Exotic Species in Coastal and Estuarine Environments @ 100%
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