Acceptability and suitability of Tuta absoluta eggs from irradiated parents to parasitism by Trichogramma nerudai and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)

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Acceptability and suitability of Tuta absoluta eggs from irradiated parents to parasitism by Trichogramma nerudai and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)

Cynthia L. Cagnotti [et al.] - Nama Orang;

1 Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most devastating
pests of tomato crops. We studied the acceptability and suitability of eggs laid by
irradiated T. absoluta pairs to parasitism by the parasitoids Trichogramma nerudai
and Trichogramma pretiosum.

2 Trichogramma absoluta pupae were irradiated with X-radiation (20834 R) and the
emerged adults were separated into couples according to the crosses: ♂U × ♀U,
♂I × ♀U, ♂U × ♀I (where ‘U’ is untreated and ‘I’ is irradiated). In a no-choice
experiment, 40 eggs from each cross were exposed to a female parasitoid for 24 h.

3 All T. absoluta eggs were accepted for oviposition by T. nerudai and were suitable
for its development. However, eggs from irradiated females were significantly less
parasitized than those from untreated females. Trichogramma pretiosum showed low
parasitism on eggs from all crosses. In a choice experiment, both T. nerudai and
T. pretiosum showed no differences in the parasitism of eggs from irradiated (n=40)
and non-irradiated female moths (n=40).

4 These results indicate that eggs laid by irradiated parents were acceptable for
oviposition and suitable for the development of these parasitoids, and also support
the idea that the inherited sterility technique could be used in an integrated approach
with egg parasitoids to control T. absoluta.

Keywords Biological control, egg parasitoid, inherited sterility, natural enemies, tomato leafminer, X rays.

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Informasi Detail

Judul Seri: Agricultural and Forest Entomology
No. Panggil: -
Penerbit: London : The Royal Entomological Society., 2016
Deskripsi Fisik: Agricultural and Forest Entomology (2016), 18, 198–205
Bahasa: English
ISBN/ISSN: DOI: 10.1111/afe.121
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: (2016), 18
Subjek: PERTANIAN.
Info Detail Spesifik: -
Pernyataan Tanggungjawab: agus

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FULL TEXT: Acceptability and suitability of Tuta absoluta eggs from irradiated parents to parasitism by Trichogramma nerudai and Trichogramma pretiosum (Hymenoptera: Trichogrammatidae)

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