Criação de adultos e biologia comparada de Mocis latipes (Guenee, 1852) (Lepidoptera Noctuidae) em folhas de milho e arroz em condições de laboratório

Abstract

The influence of alimentation and cages for the adult phase of MccU UUpi* (GUENÊE 1852) and its biology compared on corn and rice leaves was studied. The biological aspects were studied in the laboratory at a temperature of 25 ± 2°C, a relative nu midity of 60 ± 10% and a photoperiod of 14 hours. The cages tested for the rearing of M. Iatlpz6 adults were PVC tubes 20 cm long and 10, 15 and 20 cm in diameter. The 10 cm diameter cages were considered the best, reducing the average period of pre-oviposition to 5.2 days and increasing the period of oviposition to 8,7 days which resulted in a greater oviposition capacity with an average of 268 eggs/female. The aqueous solutions of saccharose, honey,g1ucose and fructose at concentrations of 5, 10 and 15% were studied for the alimentation of M. latlp^ adults. The 5% solution of honey provid ed the shortest pre-oviposition period, on average 4 days, and the greatest oviposition period, on average 10 days, resulting in a greater oviposition capacity with an average of 291 eggs/female, and is therefore considered adequate for the a1imentation ofadu 1ts. Considering the comparison of the biology on rice and com leaves in function of the bíologfcaT data, it was observed that th$,caterpM lar stage and the numher of instars found were influenced by the food provided resu1ting in durations of 21,13 and 18,10 days on rice and com respective1y. The number of instars observed on rice leayes was 7 and on corn 6, with an average consumption of 1*3,0 and 160 ,Ocm^ 0f 1eaves ofrice andcorn respectively. The M. laUptò males were moresensi tive tothe charge in food, an increase in the pupal period being observed when the caterpillars were reared on rice leaves. Oviposition capacity was not \ffected by the substrate. The total bio 1ogica 1Cyc1e was 53,23 and \ 50,50 days on rice and corn respective1y.