Expresión de infecciones latentes causadas por VPN (Baculoviridae) en larvas de Spodoptera exigua Hübner (Lepidoptera: Noctuidae) sometidas a diferentes condiciones ambientales

GUIMARAES, F. R.; ALDEBIS, H. K.; SANTIAGO-ALVAREZ, C. y VARGAS OSUNA, E., 1998: Activation of NPV (Baculoviridae) latent infections in Spodoptera exigua Hubner (Lepidoptera: Noctuidae) larvae under different environmental conditions. Bol. San. Veg. Plagas, 24(Adenda al n.° 4): 997-1002. The influence of larval density (1, 2, 3, 6 and 9 larvae/container) and temperature (15, 25, 30 and 35 °C) on the activation of the Nuclear Polyhedrosis Virus latent infections have been studied in Spodoptera exigua larvae. The mortality by nuclear polyhedrosis was not influenced by the larval density; nevertheless, a positive relation was found between larval density and cannibalism. The total percentage of larval mortality was directly related to the number of larvae, reaching signifficant differences between 1 and 9 larvae/container. The rearing temperature affected the larval mortality by nuclear polyhedrosis. The mortality of the larvae reared to 25 °C was signifficantly reduced with respect to the larvae reared to the others temperatures.