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The effects of natural disturbances, reef state, and herbivorous fish densities on ciguatera poisoning in Rarotonga, southern Cook Islands.
Toxicon. 2013 Mar 15; 64:87-95.T

Abstract

Ciguatera poisoning is a critical public-health issue among Pacific island nations. Accurately predicting ciguatera outbreaks has become a priority, particularly in Rarotonga in the southern Cook Islands, which has reported the highest incidence of ciguatera poisoning globally. Since 2006, however, cases of ciguatera poisoning have declined, and in 2011 ciguatera cases were the lowest in nearly 20 years. Here we examined the relationships between cases of ciguatera poisoning, from 1994 to 2011, and: (i) coral cover, used as a proxy of reef state, (ii) the densities of herbivorous fishes, and (iii) reef disturbances. We found that coral cover was not a good predictor of cases of ciguatera poisoning, but high densities of the herbivorous fish Ctenochaetus striatus and reef disturbances were both strong predictors of ciguatera poisoning. Yet these two predictors were correlated, because the densities of C. striatus increased only after major cyclones had disturbed the reefs. Since 2006, the number of cyclones has decreased considerably in Rarotonga, because of the climatic shift toward the negative phase of the Pacific Decadal Oscillation. We suggest that fewer cyclones have led to decreases in both the densities of C. striatus and of the number of reported cases of ciguatera poisoning in Rarotonga.

Authors+Show Affiliations

eturere@yahoo.comNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23313379

Citation

Rongo, Teina, and Robert van Woesik. "The Effects of Natural Disturbances, Reef State, and Herbivorous Fish Densities On Ciguatera Poisoning in Rarotonga, Southern Cook Islands." Toxicon : Official Journal of the International Society On Toxinology, vol. 64, 2013, pp. 87-95.
Rongo T, van Woesik R. The effects of natural disturbances, reef state, and herbivorous fish densities on ciguatera poisoning in Rarotonga, southern Cook Islands. Toxicon. 2013;64:87-95.
Rongo, T., & van Woesik, R. (2013). The effects of natural disturbances, reef state, and herbivorous fish densities on ciguatera poisoning in Rarotonga, southern Cook Islands. Toxicon : Official Journal of the International Society On Toxinology, 64, 87-95. https://doi.org/10.1016/j.toxicon.2012.12.018
Rongo T, van Woesik R. The Effects of Natural Disturbances, Reef State, and Herbivorous Fish Densities On Ciguatera Poisoning in Rarotonga, Southern Cook Islands. Toxicon. 2013 Mar 15;64:87-95. PubMed PMID: 23313379.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of natural disturbances, reef state, and herbivorous fish densities on ciguatera poisoning in Rarotonga, southern Cook Islands. AU - Rongo,Teina, AU - van Woesik,Robert, Y1 - 2013/01/10/ PY - 2012/08/14/received PY - 2012/11/21/revised PY - 2012/12/13/accepted PY - 2013/1/15/entrez PY - 2013/1/15/pubmed PY - 2013/7/24/medline SP - 87 EP - 95 JF - Toxicon : official journal of the International Society on Toxinology JO - Toxicon VL - 64 N2 - Ciguatera poisoning is a critical public-health issue among Pacific island nations. Accurately predicting ciguatera outbreaks has become a priority, particularly in Rarotonga in the southern Cook Islands, which has reported the highest incidence of ciguatera poisoning globally. Since 2006, however, cases of ciguatera poisoning have declined, and in 2011 ciguatera cases were the lowest in nearly 20 years. Here we examined the relationships between cases of ciguatera poisoning, from 1994 to 2011, and: (i) coral cover, used as a proxy of reef state, (ii) the densities of herbivorous fishes, and (iii) reef disturbances. We found that coral cover was not a good predictor of cases of ciguatera poisoning, but high densities of the herbivorous fish Ctenochaetus striatus and reef disturbances were both strong predictors of ciguatera poisoning. Yet these two predictors were correlated, because the densities of C. striatus increased only after major cyclones had disturbed the reefs. Since 2006, the number of cyclones has decreased considerably in Rarotonga, because of the climatic shift toward the negative phase of the Pacific Decadal Oscillation. We suggest that fewer cyclones have led to decreases in both the densities of C. striatus and of the number of reported cases of ciguatera poisoning in Rarotonga. SN - 1879-3150 UR - https://www.unboundmedicine.com/medline/citation/23313379/The_effects_of_natural_disturbances_reef_state_and_herbivorous_fish_densities_on_ciguatera_poisoning_in_Rarotonga_southern_Cook_Islands_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0041-0101(13)00003-2 DB - PRIME DP - Unbound Medicine ER -