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15. Nontarget Host Risk Assessment of the Egg Parasitoid Trichogrammatoidea cryptophlebiae (Hymenoptera: Trichogrammatidae) for Classical Biological Control of the False Codling Moth (Lepidoptera: Tortricidae) in Israel.

Author

Kaspi, Roy, Steinitz, Hadass, Nemny-Lavi, Esther, Lebedev, Galina, Melamed, Ester, and Gazit, Yoav

Subjects
CODLING moth, TORTRICIDAE, BIOLOGICAL pest control, MEDITERRANEAN flour moth, TRICHOGRAMMATIDAE, LEPIDOPTERA
Abstract

The false codling moth Thaumatotibia leucotreta (Meyrick), is an invasive species in Israel. In order to carry out a classical biological control program, the African egg parasitoid Trichogrammatoidea cryptophlebiae (Nagaraja) was recently introduced into Israel, and nontarget host risk assessment was performed as required. In no-choice tests we determined that T. cryptophlebiae was unable to develop in eggs of four nontarget Lepidopteran species: Pectinophora gossypiella (Saunders) , Spodoptora littoralis (Boisduval) , Ephestia kuehniella (Zeller), and Belenois aurota (Fabricius). Conversely, it developed in three Lepidopteran species eggs of the Tortricidae family: Cydia pomonella (Linnaeus), Lobesia botrana (Denis and Schiffermüller), and Epiblema strenuana (Walker). Epiblema strenuana eggs showed the lowest parasitism level among all tested moth eggs of the Tortricidae family. The progeny production of parasitized false codling moth eggs was similar to that of C. pomonella eggs, but smaller than that of L. botrana eggs. However, moth egg and parasitoid clutch sizes were smallest on L. botrana eggs and largest on C. pomonella eggs. In choice bioassays, T. cryptophlebiae significantly preferred to parasitize T. leucotreta eggs over the eggs of C. pomonella , L. botrana , and E. strenuana. Moreover, the choice of T. leucotreta eggs over the eggs of L. botrana was not affected by the parasitoids' rearing histories. Our data support the assumption that T. cryptophlebiae develops only in moth species of the Tortricidae family. Thus, the risk that it may attack nontarget species is low. [ABSTRACT FROM AUTHOR]

Published
2020
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19. Nontarget Host Risk Assessment of the Egg Parasitoid Trichogrammatoidea cryptophlebiae(Hymenoptera: Trichogrammatidae) for Classical Biological Control of the False Codling Moth (Lepidoptera: Tortricidae) in Israel

Author

Kaspi, Roy, Steinitz, Hadass, Nemny-Lavi, Esther, Lebedev, Galina, Melamed, Ester, and Gazit, Yoav

Abstract

The false codling moth Thaumatotibia leucotreta(Meyrick), is an invasive species in Israel. In order to carry out a classical biological control program, the African egg parasitoid Trichogrammatoidea cryptophlebiae(Nagaraja) was recently introduced into Israel, and nontarget host risk assessment was performed as required. In no-choice tests we determined that T. cryptophlebiaewas unable to develop in eggs of four nontarget Lepidopteran species: Pectinophora gossypiella(Saunders), Spodoptora littoralis(Boisduval), Ephestia kuehniella(Zeller), and Belenois aurota(Fabricius). Conversely, it developed in three Lepidopteran species eggs of the Tortricidae family: Cydia pomonella(Linnaeus), Lobesia botrana(Denis and Schiffermüller), and Epiblema strenuana(Walker). Epiblema strenuanaeggs showed the lowest parasitism level among all tested moth eggs of the Tortricidae family. The progeny production of parasitized false codling moth eggs was similar to that of C. pomonellaeggs, but smaller than that of L. botranaeggs. However, moth egg and parasitoid clutch sizes were smallest on L. botranaeggs and largest on C. pomonellaeggs. In choice bioassays, T. cryptophlebiaesignificantly preferred to parasitize T. leucotretaeggs over the eggs of C. pomonella, L. botrana, and E. strenuana. Moreover, the choice of T. leucotretaeggs over the eggs of L. botranawas not affected by the parasitoids’ rearing histories. Our data support the assumption that T. cryptophlebiaedevelops only in moth species of the Tortricidae family. Thus, the risk that it may attack nontarget species is low.

Published
2020
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28. An Additional Phytosanitary Cold Treatment Against Ceratitis capitata (Diptera: Tephritidae) in 'Oroblanco' Citrus Fruit.

Author

Gazit, Yoav and Kaspi, Roy

Subjects
PHYTOSANITATION, MEDITERRANEAN fruit-fly
Abstract

For 'Oroblanco' ('Sweetie'), the sweet seedless pummelo-grapefruit hybrid, when exported from Israel to Japan, the standard cold treatment against Ceratitis capitata (Wied.) (Diptera: Tephritidae) is conducted at≤1.5 °C, for 16 d. In recent years, the transportation means of exported citrus was changed from reefer vessels to individual refrigerated containers, where the fruit bulk is relatively small and may be exposed to temperature fluctuations and to the risk of chilling injuries. To reduce this risk, Israel proposed to Japan to increase the treatment temperature and extend its duration to 2.2 ° C and 18 d, respectively. This study shows that the proposed treatment effectively kills the third instar larva of C. capitata, in Oroblanco. [ABSTRACT FROM AUTHOR]

Published
2017
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