Effects on Insects

Neven, Lisa; Yahia, Elhadi M.; Hallman, Guy J.

doi:10.1201/9781420069587.ch11

Cited by 4 publications

(1 citation statement)

References 105 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is enough evidence supporting the fact that modified atmospheres do not reduce the efficacy of phytosanitary irradiation for tephritids. Furthermore, modified atmosphere itself can be used as a phytosanitary treatment [60], and the hormetic effect of low oxygen conditioning can be reverted with longer durations of hypoxia that are harmful to organisms [21]. Based on these findings and considerations, regulatory plant protection agencies and international organizations may consider reviewing their restrictions on PI under modified atmospheres targeting tephritid fruit flies.…”

Section: Discussionmentioning

confidence: 99%

Modified Atmosphere Does Not Reduce the Efficacy of Phytosanitary Irradiation Doses Recommended for Tephritid Fruit Flies

Dias

Hallman²,

Martínez-Barrera

et al. 2020

Insects

View full text Add to dashboard Cite

Phytosanitary irradiation (PI) has been successfully used to disinfest fresh commodities and facilitate international agricultural trade. Critical aspects that may reduce PI efficacy must be considered to ensure the consistency and effectiveness of approved treatment schedules. One factor that can potentially reduce PI efficacy is irradiation under low oxygen conditions. This factor is particularly important because storage and packaging of horticultural commodities under low oxygen levels constitute practices widely used to preserve their quality and extend their shelf life. Hence, international organizations and regulatory agencies have considered the uncertainties regarding the efficacy of PI doses for insects infesting fresh commodities stored under low oxygen levels as a rationale for restricting PI application under modified atmosphere. Our research examines the extent to which low oxygen treatments can reduce the efficacy of phytosanitary irradiation for tephritids naturally infesting fruits. The effects of normoxia (21% O2), hypoxia (~5% O2), and severe hypoxia (< 0.5% O2) on radiation sensitivity of third instars of Anastrepha fraterculus (sensu lato), A. ludens (Loew), Bactrocera dorsalis (Hendel), and Ceratitis capitata (Wiedemann) were evaluated and compared at several gamma radiation doses. Our findings suggest that, compared to normoxia, hypoxic and severe-hypoxic conditioning before and during irradiation can increase adult emergence and contribute to advancement of larval development of tephritid fruit flies only at low radiation doses that are not used as phytosanitary treatments. With phytosanitary irradiation doses approved internationally for several tephritids, low oxygen treatments applied before and during irradiation did not increase the emergence rates of any fruit fly species evaluated, and all treated insects died as coarctate larvae. Thus, the findings of our research support a re-evaluation of restrictions related to phytosanitary irradiation application under modified atmospheres targeting tephritid fruit flies.

show abstract

Section: Discussionmentioning

confidence: 99%

Modified Atmosphere Does Not Reduce the Efficacy of Phytosanitary Irradiation Doses Recommended for Tephritid Fruit Flies

Dias

Hallman²,

Martínez-Barrera

et al. 2020

Insects

View full text Add to dashboard Cite

show abstract

Low O2 and high CO2 atmospheres have no impact on efficacy of phytosanitary irradiation doses for Drosophila suzukii larvae

Chen

Beam

Bailey

et al. 2023

Postharvest Biology and Technology

View full text Add to dashboard Cite

Efficacy of Delayed Atmospheric Modification in a Heat/Modified Atmosphere Phytosanitary Treatment

Hallman¹

2010

View full text Add to dashboard Cite

The combination of heat and low levels of oxygen increases mortality to insects infesting fruit compared with either heat or low oxygen alone. This combination treatment shows promise to disinfest commodities of quarantine pests. Heated air/modified atmosphere treatments employ the modified atmosphere (e.g., low oxygen) during the entire treatment interval. There is a positive relationship between temperature and efficacy of heat/modified atmosphere treatments. Efficacy of delaying atmospheric modification in a heat/modified atmosphere treatment was studied with the Mexican fruit fly, Anastrepha ludens (Loew) (Diptera: Tephritidae), a quarantine pest of citrus and other fruit in Mexico, Central America, and southern Texas. Larvae were subjected to heat/low oxygen treatments in vitro as well as in grapefruit, Citrus paradisi Macfayden. The relationship between time delay of the modified atmosphere and estimated time required to kill 99% of Mexican fruit fly third instars was not linear, which would indicate an additive relationship, but followed a sigmoid relationship. When infested grapefruit were heated with 47 degrees C air in three atmospheric regimes: 1) air; 2) N2 at 99 kPa plus O2 at 1 kPa; or 3) air for 55 min then N2 at 99 kPa plus O2 at 1 kPa for the remainder of the treatment, estimated 99% prevention of pupariation was 157, 127, and 141 min, respectively.

show abstract

Effects on Insects

Cited by 4 publications

References 105 publications

Modified Atmosphere Does Not Reduce the Efficacy of Phytosanitary Irradiation Doses Recommended for Tephritid Fruit Flies

Modified Atmosphere Does Not Reduce the Efficacy of Phytosanitary Irradiation Doses Recommended for Tephritid Fruit Flies

Low O2 and high CO2 atmospheres have no impact on efficacy of phytosanitary irradiation doses for Drosophila suzukii larvae

Efficacy of Delayed Atmospheric Modification in a Heat/Modified Atmosphere Phytosanitary Treatment

Contact Info

Product

Resources

About