Resumo

CARVALHO, Geraldo Andrade; PARRA, José Roberto Postali  e  BAPTISTA, Gilberto Casadei. Effect of pesticides used on tomato crop (Lycopersicon esculentum Mill.) on Trichogramma pretiosum Riley, 1879 in F1 and F2 generations on Anagasta kuehniella (Zeller, 1879) eggs. Ciênc. agrotec. [online]. 2003, vol.27, n.2, pp. 295-304. ISSN 1413-7054.  http://dx.doi.org/10.1590/S1413-70542003000200007.

Two Trichogramma pretiosum Riley, 1879 populations from Alegre ES = L₉ and Venda Nova do Imigrante, ES = L₁₀ (Brazil) were treated with the main pesticides used on tomato crop after reared on Anagasta kuehniella (Zeller) eggs. The eggs were treated and submitted to parasitism on 0, 24 and 48 hours and kept in climatic chambers at 25 ± 2 ºC, 60 ± 10% RH and 14 hours photophase. The longevity of T. pretiosum (mother females), independently of strain, was decreased for insecticides deltamethrin, abamectin and methamidophos. No influence was detected in the parasitism capacity in F₁ generation of T. pretiosum with the products triflumuron, chlorfluazuron, benomyl, chlorotalonil, Bacillus thuringiensis, mancozeb, dimetomorf, tebufenozide, teflubenzuron, acefate, pirimicarb, iprodione, methamidophos and ciromazine, and these compounds did not effected the emergence in F₂ generation of this parasitoid, independently of the strain.

Palavras-chave : Trichogramma; pesticides; selectivity; tomato.