Potential for Escape of Live Boll Weevils (Coleoptera: Curculionidae) into Cottonseed, Motes, and Cleaned Lint at the Cotton Gin

Sappington, Thomas W.; Brashears, A. D.; Parajulee, Megha N.; Carroll, Stanley C.; Arnold, Mark D.; Baker, R. V.

doi:10.1603/0022-0493-97.6.1773

2004

DOI: 10.1603/0022-0493-97.6.1773

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Potential for Escape of Live Boll Weevils (Coleoptera: Curculionidae) into Cottonseed, Motes, and Cleaned Lint at the Cotton Gin

Thomas W. Sappington¹,

A. D. Brashears²,

Megha N. Parajulee³

et al.

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Cited by 4 publications

(1 citation statement)

References 21 publications

(33 reference statements)

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“…However, it has been shown experimentally that boll weevils cannot survive the cotton gin machinery through which they must pass before segregation into the seed bin (Sappington et al 2004), so this possibility is judged to be very unlikely. There are two other hypotheses that we consider in this study.…”

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Using Genetic Markers and Population Assignment Techniques to Infer Origin of Boll Weevils (Coleoptera: Curculionidae) Unexpectedly Captured Near an Eradication Zone in Mexico

Kim

Cano-Ríos²,

Sappington

2006

Environ Entomol

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confidence: 99%

Using Genetic Markers and Population Assignment Techniques to Infer Origin of Boll Weevils (Coleoptera: Curculionidae) Unexpectedly Captured Near an Eradication Zone in Mexico

Kim

Cano-Ríos²,

Sappington

2006

Environ Entomol

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Population genetics strategies to characterize long-distance dispersal of insects

Kim

Sappington

2013

Journal of Asia-Pacific Entomology

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Population genetics strategies offer an alternative and powerful approach for obtaining information about long-distance movement, and have been widely used for examining patterns and magnitude of insect dispersal over geographic and temporal scales. Such strategies are based on the principle that genetic divergence between local populations reflects the interplay between genetic drift and gene flow, and thus can function as an indicator of dispersal capacity. Relatively new approaches for inferring population history are widely applicable for documenting introduction routes of invasive or quarantine species. These approaches are based on genetic variability calculated from changes in gene frequency of subpopulations, measured using molecular genetic markers. Inferences from population genetics can supplement and corroborate conventional observational approaches for characterizing insect dispersal and have provided important clues to many questions raised in the field of behavior and ecology of insects. Here, we summarize our work on the boll weevil as a case study to illustrate the kinds of information on dispersal capacity and dispersal patterns that can be obtained from population genetics techniques that would be difficult or impossible to acquire in other ways. Then we provide examples of how the molecular markers and population genetics tools have been applied to answer immediate questions of relevance to eradication program managers. Though the latter are idiosyncratic to this particular pest, they demonstrate the kinds and range of problems that can be addressed in other systems through application of population genetics strategies. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted. Population genetics strategies offer an alternative and powerful approach for obtaining information about long-distance movement, and have been widely used for examining patterns and magnitude of insect dispersal over geographic and temporal scales. Such strategies are based on the principle that genetic divergence between local populations reflects the interplay between genetic drift and gene flow, and thus can function as an indicator of dispersal capacity. Relatively new approaches for inferring population history are widely applicable for documenting introduction routes of invasive or quarantine species. These approaches are based on genetic variability calculated from changes in gene frequency of subpopulations, measured using molecular genetic markers. Inferences from population genetics can supplement and corroborate conventional observational approaches for characterizing insect dispersal and have provided important clues to many questions raised in the field of behavior and ecology of insects. Here, we summarize our work on the boll weevil as a case study to illustrate the kinds of information on dispersal capacity and dispersal patterns that can be obtained from population genetics tech...

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Morphology, Diet, and Temperature-Dependent Host-Free Survival of the Boll Weevil, Anthonomus grandis (Coleoptera: Curculionidae)

Spurgeon

Suh

2018

Journal of Insect Science

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The boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is an important pest of cotton (Gossypium spp. (Malvales: Malvaceae)) in South America, Mexico, and southernmost Texas in the United States. A key factor in the persistence of the boll weevil is its ability to survive the noncotton season. Mechanisms facilitating this survival in subtropical and tropical areas are incompletely known, and our understanding has been further complicated by recent reports of overwintering on noncotton hosts. In addition, the nature and even existence of the adult dormancy, and validity of the criteria used to distinguish it, have been questioned. We manipulated the boll weevil diet to produce a range of diapause responses and observed the corresponding host-free survival patterns. The estimated proportion of diapause was associated with subsequent survival. In addition, different diets producing similar incidences of diapause resulted in substantially different host-free longevity, and the longest survival was observed for weevils fed bolls as adults. Survival patterns exhibited a negative temperature dependence except for the lowest observed temperature (12.8°C), where survival was reduced compared with that at 18.3°C. This suggests chronic chilling injury in response to extended exposure to low, above freezing temperatures. All but the highest temperature (29.4°C) facilitated survival >6 mo, and survival of >1 yr was observed at 18.3°C. The temperatures permitting the greatest survival are typical for many subtropical and tropical regions during the noncotton season, indicating that diapausing boll weevils are capable of surviving the noncotton season in these regions without the benefit of presumptive noncotton hosts.

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Potential for Escape of Live Boll Weevils (Coleoptera: Curculionidae) into Cottonseed, Motes, and Cleaned Lint at the Cotton Gin

Cited by 4 publications

References 21 publications

Using Genetic Markers and Population Assignment Techniques to Infer Origin of Boll Weevils (Coleoptera: Curculionidae) Unexpectedly Captured Near an Eradication Zone in Mexico

Using Genetic Markers and Population Assignment Techniques to Infer Origin of Boll Weevils (Coleoptera: Curculionidae) Unexpectedly Captured Near an Eradication Zone in Mexico

Population genetics strategies to characterize long-distance dispersal of insects

Morphology, Diet, and Temperature-Dependent Host-Free Survival of the Boll Weevil, Anthonomus grandis (Coleoptera: Curculionidae)

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