Data/hora: 12/06/2024 02:17:22

Biblioteca(s): | Embrapa Soja.
Data corrente: | 03/04/2012
Data da última atualização: | 25/07/2017
Autoria: | ALTOÉ, T. da S.; PRATISSOLI, D.; CARVALHO, J. R. de; SANTOS JUNIOR, H. J. G. dos; PAES, J. P. P.; BUENO, R. C. O. de F.; BUENO, A. de F.
Afiliação: | THIAGO DA SILVA ALTOÉ, Universidade Federal do Espírito Santo; DIRCEU PRATISSOLI, Universidade Federal do Espírito Santo; JOSÉ ROMÁRIO DE CARVALHO, Universidade Federal do Espírito Santo; HUGO JOSÉ GONÇALVES DOS SANTOS JUNIOR, Universidade Federal do Espírito Santo; JOÃO PAULO PEREIRA PAES, Universidade Federal do Espírito Santo; REGIANE CRISTINA OLIVEIRA DE FREITAS BUENO, FESURV - Rio Verde, GO.; ADENEY DE FREITAS BUENO, CNPSO.
Título: | Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) parasitism of Trichoplusia ni (Lepidoptera: Noctuidae) eggs under different temperatures.
Ano de publicação: | 2012
Fonte/Imprenta: | Annals of Entomological Society of America, College Park, v. 105, n. 1, p. 82-89, 2012.
DOI: | dx.doi.org/10.1603/AN11116
Idioma: | Inglês
Conteúdo: | A study of the biological characteristics and thermal requirements of the parasitoid Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) on eggs of Trichoplusia ni (Hu¨ bner, 1802) (Lepidoptera: Noctuidae) at several different temperatures was performed in this work. Eggs of T. ni were exposed to T. pretiosum strain Tspd parasitism for 5 hr and then transferred to environmentally controlled growth chambers set at the temperatures of 18, 21, 24, 27, 30, and 33 º _ 1º C. The duration of the T. pretiosum egg-to-adult period was affected by temperature, varying from 6 to 18 d over the range of the studied temperatures. The number of individuals emerged per egg and the sex ratio also were affected by temperature variations, but regression analysis did not Þnd correlation between the increase of temperature and the observed variation of these biological parameters. Similarly, parasitism viability (percentage) was inßuenced by temperature variation, but always exceeded 80% at all tested temperatures. The thermal lower limit of development (Tbase) and the thermal constant (K) for T. pretiosum were 11.84º C and 128.37 DD, respectively. These results here reported indicate that T. pretiosum was impacted by the temperature, however, this parasitoid had a satisfactory performance on T. ni eggs at all studied temperature (from 18 to 33º C), showing potential to be used successfully as a biological control agent of this pest in different regions that Þt in this tested temperature range. Also, the rearing temperature of this parasitoid might be changed from 18 to 33º C, according to commercial demands for accelerating or retarding mass production for Þeld releases without damages to the parasitoid development.
Thesagro: | Controle Biológico.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (32971-1) - UPC - AP - PP - 12050 -  - 12050 - DIS