Boll Weevil (Coleoptera: Curculionidae) Survival through Cotton Gin Trash Fans

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

doi:10.1603/0022-0493-97.5.1612

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Proportions indicate experimentally determined 24-h survival potentials of free adult boll weevils from the point in the ginning process marked by the base of an arrow to the next stage or output product at the tip of the arrow. A percentage preceded by "Յ" represents the p u (95% upper conÞdence limit) calculated for an observed zero recovery of marked adults surviving 24 h. For green boll/rock trap, and minimum and enhanced seed cotton cleaning estimates, see Sappington et al (2004b); for trash fan estimates, see Sappington et al (2004c). than the probit 9 level (99.9968%) traditionally required for quarantine security (Landolt et al 1984, Hughes 2003. Given that not even any dead boll weevils were recovered intact from the precleaning experiments (Sappington et al 2004b), the true mortality rate is likely much greater than that calculated based on the p u value.…”

Section: ϫ6mentioning

confidence: 99%

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

Sappington¹,

Brashears²,

Parajulee³

et al. 2004

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Section: ϫ6mentioning

confidence: 99%

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

Sappington¹,

Brashears²,

Parajulee³

et al. 2004

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Dispersal of Boll Weevils (Coleoptera: Curculionidae) from Cotton Modules Before Ginning

Sappington

Arnold

Brashears

et al. 2006

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We characterized the level of risk of boll weevil, Anthonomus grandis grandis Boheman, reintroduction to an eradication zone posed by dispersal from cotton modules during and after transport to the gin. Mark-release-recapture experiments in August and September in Texas indicated that most weevils disperse rapidly from the module surface, temperature permitting, unless confined under a module tarp, where most died. Nevertheless, 1-5% of released weevils were recovered alive after 24 h on the side and top surfaces of modules, representing potential dispersants. Mortality of boll weevils caged on the top surface of a module was 95-100% after 1-4 d when maximum air temperatures were > or = 33 degrees C and 72-100% when minimum temperatures were -7 degrees C or lower, but a few survived even after experiencing a minimum daily temperature of -12 degrees C. Under warm (daily maximum temperatures > or = 25 degrees C) and cold (daily minimum temperatures < or = 0 degrees C) weather conditions, survival was higher under the tarp than on the open surface of the module (20 versus 7% and 42 versus 26%, respectively), but mortality was 100% in both locations when temperatures reached 34 degrees C. Our results indicate that although the threat to an eradication zone posed by boll weevil dispersal from an infested module is very low under most environmental conditions, it is probably greatest when 1) a module is constructed and transported from an infested zone during weather too cool for flight, followed by warm weather favorable for flight at the gin yard; or 2) such a module is transported immediately after construction in moderate-to-warm weather.

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Boll Weevil (Coleoptera: Curculionidae) Survival through Cotton Gin Trash Fans

Cited by 2 publications

References 16 publications

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

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

Dispersal of Boll Weevils (Coleoptera: Curculionidae) from Cotton Modules Before Ginning

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