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Lime Juice and Vinegar Injections as a Cheap and Natural Alternative to Control COTS Outbreaks
Auteur(s) : Moutardier, Grégoire Gereva, Sompert Mills, Suzanne C Adjeroud, Mehdi Beldade, Ricardo Ham, Jayven Kaku, Rocky Dumas, Pascal
Auteurs secondaires : Ecologie marine tropicale dans les Océans Pacifique et Indien (ENTROPIE [Réunion]) ; Institut de Recherche pour le Développement (IRD) - Université de la Réunion (UR) - Centre National de la Recherche Scientifique (CNRS) Fisheries Department of Vanuatu Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Excellence CORAIL (LabEX CORAIL) ; Institut de Recherche pour le Développement (IRD) - Université des Antilles et de la Guyane (UAG) - École des hautes études en sciences sociales (EHESS) - École pratique des hautes études (EPHE) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de la Réunion (UR) - Université de la Polynésie Française (UPF) - Université de Nouvelle Calédonie - Institut d'écologie et environnement Marine and Environmental Sciences Centre (MARE) ; Faculdade de Ciencias da Universidade de Lisboa Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; Université de Perpignan Via Domitia (UPVD) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS)

Éditeur(s) : HAL CCSD Public Library of Science
Résumé : International audience
Outbreaks of the corallivorous crown-of-thorns seastar Acanthaster planci (COTS) represent one of the greatest disturbances to coral reef ecosystems in the Indo-Pacific, affecting not only coral reefs but also the coastal communities which rely on their resources. While injection approaches are increasingly used in an attempt to control COTS densities, most of them display severe drawbacks including logistical challenges, high residual environmental impacts or low cost-effectiveness. We tested a new alternative control method based upon acidic injections of cheap, 100% natural products. We investigated the lethal doses, intra-and inter-specific disease transmission and immune responses of COTS when injected with fresh lime juice (extracted from local Citrus arantifolia) and white spirit vinegar. High COTS mortality was achieved with small volumes: 10–20 ml per seastar induced death in 89%/ 97% of injected specimens after an average 34.3 h/29.8 h for lime juice and vinegar respectively. Highest efficiency was reached for both solutions with double shots of (2 × 10 ml) in two different areas on the body: 100% mortality occurred within 12–24 h, which is similar or faster compared with other current injection methods. Multiple immune measures suggested that death was very likely caused by pH stress from the acidic solutions rather than a bacterial infection. Contagion to either conspecifics or a variety of other reef species was not observed, even at COTS densities 15 times higher than the highest naturally reported. 10 to 20 l lime juice/vinegar could kill up to a thousand COTS at a cost of less than 0.05 USD per specimen; no permits or special handling procedures are required. We conclude that injections of lime juice and vinegar offer great advantages when compared to current best practises and constitute a cheap and natural option for all reefs affected by COTS.
ISSN: 1932-6203

Droits : http://creativecommons.org/licenses/by/
hal-01208272
https://hal-univ-perp.archives-ouvertes.fr/hal-01208272
https://hal-univ-perp.archives-ouvertes.fr/hal-01208272/document
https://hal-univ-perp.archives-ouvertes.fr/hal-01208272/file/journal.pone.0137605.pdf
DOI : 10.1371/journal.pone.0137605

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The civil and natural History of Jamaica. In three parts. Containing, I. An accurate description of that island, its situation and soil ; with a brief account of its former and present State, Government, Revenues, Produce, and Trade. II. A history of the natural productions, including the various sorts of native fossils ; perfect and impercfect begetables ; quadrupedes, birds, fishes, reptiles and insects ; with their properties and uses in mechanics, diet, and physic. III. An account of the nature of climates in general, and their different effects upon the human body ; with a detail of the diseases arising from this source, particularly within the Tropics. In three dissertations. The whole illustrated with fifty copper-plates : in which the most curious productions are represented of the natural size, and delineated immediately from the objects
Auteur(s) : Browne, Patrick (1720-1790)
Année de publication :

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