Insecticidal Wound Treatment of Livestock on Isla de la Juventud, Cuba: an Efficient Suppression Method of New World Screwworm Cochliomyia hominivorax Prior to the Release of Sterile Insects

García, RuizIgnacio; Méndez, Ligia Ancona; Serrano, Éric; Morales, T. Gil; Vreysen, Marc J. B.

doi:10.1007/978-1-4020-6059-5_37

Cited by 13 publications

(9 citation statements)

References 8 publications

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“…All of the models show areas of low suitability for C. hominivorax in the Amazon region, suggesting that this region cannot be adequately occupied by the species. This result is consistent with the observations that C. hominivorax preferentially inhabits areas at the forest edge, where adults feed, rest and mate, and grazing areas, where females seek hosts to lay their eggs [76-79]. Even though, this species appears to have crossed this Amazon area in the warming period, when forests might have expanded [4,80]; thus the hypothesized corridors suggested by Silva and Bates [9] do not seem to explain the observed distribution pattern.…”

Section: Discussionsupporting

confidence: 91%

The Phylogeographic History of the New World Screwworm Fly, Inferred by Approximate Bayesian Computation Analysis

2013

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Insect pest phylogeography might be shaped both by biogeographic events and by human influence. Here, we conducted an approximate Bayesian computation (ABC) analysis to investigate the phylogeography of the New World screwworm fly, Cochliomyia hominivorax, with the aim of understanding its population history and its order and time of divergence. Our ABC analysis supports that populations spread from North to South in the Americas, in at least two different moments. The first split occurred between the North/Central American and South American populations in the end of the Last Glacial Maximum (15,300-19,000 YBP). The second split occurred between the North and South Amazonian populations in the transition between the Pleistocene and the Holocene eras (9,100-11,000 YBP). The species also experienced population expansion. Phylogenetic analysis likewise suggests this north to south colonization and Maxent models suggest an increase in the number of suitable areas in South America from the past to present. We found that the phylogeographic patterns observed in C. hominivorax cannot be explained only by climatic oscillations and can be connected to host population histories. Interestingly we found these patterns are very coincident with general patterns of ancient human movements in the Americas, suggesting that humans might have played a crucial role in shaping the distribution and population structure of this insect pest. This work presents the first hypothesis test regarding the processes that shaped the current phylogeographic structure of C. hominivorax and represents an alternate perspective on investigating the problem of insect pests.

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Section: Discussionsupporting

confidence: 91%

The Phylogeographic History of the New World Screwworm Fly, Inferred by Approximate Bayesian Computation Analysis

2013

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“…These results further support the hypothesis that the Caribbean Sea is a geographic barrier to gene ßow in the screwworm. As Ciro Redondo showed the lowest variability indices, we suppose that this could be a result of the effective suppression program in the Isla de la Juventud (Garcia et al 2007) that occurred just before collecting the samples analyzed here. The suppression may have induced a population bottleneck that explains the low variability found.…”

Section: Discussionmentioning

confidence: 87%

“…The Amazon rain forest represents this putative geographic barrier. Because the screwworm inhabits the interface between savannah and forest borders (Thomas 1993, Phillips et al 2004, Garcia et al 2007, processes involved in this forest fragmentation and recover (Clapperton 1993, Haffer andPrance 2001) might be responsible for the observed geographic structure of screwworm populations.…”

Section: ) Neotropical Butterßiesmentioning

confidence: 98%

Genetic Structure and Demographic History of New World Screwworm Across Its Current Geographic Range

et al. 2011

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The phylogeographical history of the pest fly screwworm, Cochliomyia hominivorax (Coquerel), was studied using partial mitochondrial DNA sequences of the control region, Cytochrome c oxidase (CO) subunit I and CO subunit II from 361 individuals collected across its current geographic range. Analyses showed marked genetic differentiation on a macrogeographic scale. The genetic diversity in the species is structured into four main "regional groups," corresponding to Cuba, the Dominican Republic, and the North and South Amazon region. Results indicated that the distribution of screwworm genetic diversity was mainly shaped by historical events, i.e., colonization of Caribbean islands, vicariance in the Amazon region and population expansion. Demographic history analyses revealed that the population expansion started approximately 20-25,000 yr ago and recently increased exponentially. We hypothesized that the initial period of expansion was probably associated with environmental amelioration in the late Pleistocene and the exponential increase with resource availability in recent times. The population expansion is probably responsible for the low divergence and the lack of genetic and geographic correlation in the South Amazon region but did not erase the genetic structure pattern on a continental scale. The screwworm is one of the most damaging livestock pests in South and Central America, and the pattern of genetic variability distribution reported here suggests that the Caribbean area and the North and South Amazon regions could be considered as independent units for future pest control programs.

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“…Screwworms have been eradicated from the United States, Mexico, and Central America using SIT as part of a comprehensive approach (Wyss 2000). Panama was declared screwworm-free in 2006 and a buffer zone of 30,000 km 2 was established at the Darien Gap by the weekly release of 25Ð50 million sterile males (Garcia et al 2007). Estimated annual producer beneÞts in the United States, Mexico and Central America exceed 1 billion dollars (VargasÐTeran et al 2005).…”

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confidence: 99%

Feasibility of Using a Caribbean Screwworm for SIT Campaigns in Brazil

et al. 2012

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Insecticidal Wound Treatment of Livestock on Isla de la Juventud, Cuba: an Efficient Suppression Method of New World Screwworm Cochliomyia hominivorax Prior to the Release of Sterile Insects

Cited by 13 publications

References 8 publications

The Phylogeographic History of the New World Screwworm Fly, Inferred by Approximate Bayesian Computation Analysis

The Phylogeographic History of the New World Screwworm Fly, Inferred by Approximate Bayesian Computation Analysis

Genetic Structure and Demographic History of New World Screwworm Across Its Current Geographic Range

Feasibility of Using a Caribbean Screwworm for SIT Campaigns in Brazil

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