Effect of Ultraviolet Irradiation on Egg Hatch, Subsequent Larval Development, and Adult Longevity of the Tobacco Budworm and the Bollworm12

Guerra, António; Ouye, Milton T.; Bullock, H.R.

doi:10.1093/jee/61.2.541

Cited by 19 publications

(20 citation statements)

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“…Short-length wave (254 nm) UV irradiation is commonly used in mass rearing insectaries to prevent contamination of eggs by pathogens (Guerra et al, 1968;Calderon & Navarro, 1971), to prevent cannibalism by hatched larvae (Goldstein et al, 1983), or to prevent host eggs from developing beyond a stage that is suitable for parasitization (Palmer, 1996). The effects of UV irradiation varies depending on length of exposure and the developmental stage of the eggs treated.…”

Section: Discussionmentioning

confidence: 99%

Effects of selected physical and chemical treatments of Colorado potato beetle eggs on host acceptance and development of the parasitic wasp, Edovum puttleri

Hu¹,

Gelman²,

Bell³

1999

Entomologia Exp Applicata

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Effects of various physical and chemical treatments of Colorado potato beetle [Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)] eggs on parasitization and development of the egg parasitoid Edovum puttleri (Hymenoptera: Eulophidae) were investigated. UV irradiation did not affect host acceptance but reduced host suitability for UV exposure times ≥90 min. Susceptibility of host eggs to UV irradiation varied with host age; eggs were most vulnerable to damage from irradiation at 12, 18, and 24 h post‐oviposition. The rate of parasitization also was influenced by host age. Percent parasitization was greatest in freshly laid eggs and 24–30 h old eggs. Seventy‐seven percent of host eggs frozen at −20 °C (5 min) were parasitized by E. puttleri, but extended exposure of eggs to −20 °C reduced both acceptance and suitability. Host eggs that had been washed with hexane (removal of kairomone and sticky layer) also were parasitized. After 5 min of washing, application of kairomone significantly increased the rate of parasitism (from 74.7% to 88.2%), but with longer periods of washing, kairomone application had no significant effect on percent parasitism. Thus, the sticky material(s) coating the egg did not appear to be essential for parasitization to occur. Our results provide effective methods and times for treating Colorado potato beetle eggs to maximize parasitization and development of E. puttleri.

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Section: Discussionmentioning

confidence: 99%

Effects of selected physical and chemical treatments of Colorado potato beetle eggs on host acceptance and development of the parasitic wasp, Edovum puttleri

Hu¹,

Gelman²,

Bell³

1999

Entomologia Exp Applicata

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“…Physical strategies like irradiation has become an established technique for controlling aeroallergens because of residue free advantages over chemicals [5] . UV irradiation is widely used as a germicide and as an attractant for insects [6] , in embryological physiological studies and for the surface disinfection of insect eggs [7] . Wharton [8] reported that UV irradiation (254 nm) killed nymphs of the American cockroach, Periplaneta americana.…”

Section: Introductionmentioning

confidence: 99%

Effect of germicidal UV-C light(254 nm) on eggs and adult of house dustmites, Dermatophagoides pteronyssinus and Dermatophagoides farinae (Astigmata: Pyroglyhidae)

Lah¹,

Musa²,

Ming³

2012

Asian Pacific Journal of Tropical Biomedicine

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“…UV‐irradiation also assists with preservation of hosts (Lianzhong et al. 1993) and has been suggested to limit occurrence of pathogens on egg surfaces (Guerra et al. 1968).…”

Section: Introductionmentioning

confidence: 99%

Host suitability of UV‐irradiated eggs of three Lepidoptera species for rearing Trichogrammatoidea lutea Girault (Hymenoptera: Trichogrammatidae)

Mawela¹,

Kfir²,

Krüger³

2010

J Applied Entomology

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To develop a rearing programme for the egg parasitoid Trichogrammatoidea lutea for augmentative biological control, the effects of ultraviolet (UV) irradiated host eggs were evaluated on the number of eggs parasitized, development time, number of progeny and sex ratio of T. lutea, using eggs of the lepidopteran species Helicoverpa armigera, Chilo partellus and Cadra cautella as hosts. UV‐irradiation of 13 min was sufficient to kill embryos of all three hosts. The highest mean percentage parasitism on UV‐irradiated and un‐irradiated eggs occurred on those of H. armigera (47.8% and 33.3%) and C. cautella (33.2% and 55.5%), followed by C. partellus (6.6% for both). The mean number of individuals emerged per single parasitized host of UV‐irradiated and un‐irradiated eggs was highest for H. armigera (2.5 and 2.1) and lower for C. partellus (1.3 and 1.4) and C. cautella (0.9 and 0.8). The sex ratio of T. lutea was female‐biased on UV‐irradiated eggs of H. armigera, on UV‐irradiated and un‐irradiated eggs of C. cautella, and male‐biased for C. partellus eggs and un‐irradiated eggs of H. armigera. The developmental time of T. lutea from egg to adult male and female differed slightly between UV‐irradiated and un‐irradiated eggs. Overall, UV‐irradiation of host eggs had negligible effects on percent parasitism, number of progeny per parasitized egg and sex ratio of T. lutea. Of the three lepidopteran species evaluated, H. armigera appears to be the most suitable host for mass‐rearing of T. lutea. The results indicate that UV‐irradiation of Lepidoptera eggs is suitable for mass rearing of T. lutea.

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Effect of Ultraviolet Irradiation on Egg Hatch, Subsequent Larval Development, and Adult Longevity of the Tobacco Budworm and the Bollworm12

Cited by 19 publications

References 0 publications

Effects of selected physical and chemical treatments of Colorado potato beetle eggs on host acceptance and development of the parasitic wasp, Edovum puttleri

Effects of selected physical and chemical treatments of Colorado potato beetle eggs on host acceptance and development of the parasitic wasp, Edovum puttleri

Effect of germicidal UV-C light(254 nm) on eggs and adult of house dustmites, Dermatophagoides pteronyssinus and Dermatophagoides farinae (Astigmata: Pyroglyhidae)

Host suitability of UV‐irradiated eggs of three Lepidoptera species for rearing Trichogrammatoidea lutea Girault (Hymenoptera: Trichogrammatidae)

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