Estimativa do número de gerações de Trichogramma pretiosum Riley na traça do tomateiro Tuta absoluta (Meyrick), com base nas exigências térmicas

Abstract

-A study was carried out in the laboratory to determine the number of generations of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) parasitizing Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) eggs, considering averages of air temperatures for 24 seasons in Alegre, ES. The lower thereshold temperature and thermal constant were 13.0°Cand 131 degree-days, respectively. The average number of generations of T. pretiosum estimated for each tomato cycle (90 days) was 7.7 generations, ranging from 9.2 in the summer to 6.0 in the winter.

Thermal requirements of Trichogramma pretiosum and T. acacioi (Hym.: Trichogrammatidae), parasitoids of the avocado defoliator Nipteria panacea (Lep.: Geometridae), in eggs of two alternative hosts

“…Thus, the determination of thermal requirements was important for quality control in rearing egg parasitoids for biological control programs. These requirements could be obtained with studies on biological characteristics of these parasitoids at different temperatures, which could help to plan their mass production (Hassan, 1997;Parra, 1997;Vinson, 1997;Pratissoli et al, 1998;Pratissoli and Parra, 2000).…”

Reproductive Biology and Functional Response ofDineulophus phtorimaeae, a Natural Enemy of the Tomato Moth,Tuta absoluta

“…Among a list of more than 50 species of T. absoluta entomophagous insects reported elsewhere (Garcia Roa 1989; Consoli et al 1998; Miranda et al 1998; Faria et al 2000; Luna et al 2010, 2011; Desneux et al 2010; Medeiros et al 2011), some of them have been pointed out as potential biocontrol agents by means of augmentative releases (Pratissoli et al 1998; Giustolin et al 2001; Torres et al 2002; Luna et al 2007; Faria et al 2008; Sanchez et al 2009; Luna et al 2010; Mollá et al 2011). However, efficient control has not been demonstrated yet, with basic biological research still needed if a successful integrated pest management program is to be developed for this pest.…”

Biologia e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) sobre ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae)

“…As variações ocorridas na Tb e K estão diretamente relacionadas com a linhagem de Trichogramma e com o hospedeiro de criação (PRATISSOLI,1995;PRATISSOLI et al, 1998).…”