Abstract

RODRIGUEZ-ESPINOSA, Frank Leidis; MARTINEZ-RIVERO, María de los Ángeles  and  GOMEZ-LEYVA, Juan Florencio. Biological parameters and life table of two populations of Chloridea virescens (Fabricius) (Lepidoptera: Noctuidae) associated with the black tobacco. Rev. Protección Veg. [online]. 2018, vol.33, n.2, e02. ISSN 1010-2752.

The biology and life table of two populations of Chloridea virescens F. were evaluated under laboratory conditions (T= 24.02 ± 0.24°C; HR= 82.52 ± 0.72 %). Both populations differed in the morphological characteristic of the last instar larvae and the organ of the plant of tobacco from which they were collected. They were separated into two groups: Group A, larvae from the leaves of the plant head and Group B, larvae from the capsules. From these larvae, adults were obtained that mated and after the oviposition initiated, a cohort of recently emerged larvae of both groups was selected. They were disposed on leaves of tobacco to continue their development until adult death. In each group, the number of eggs per laying, the duration of the each development phase, and the main population parameters were recorded. The biological parameters showed significant differences in the larval and pupal duration and the life cycle that favored the specimens of the Group A, as in the population parameters. The results indicated that these parameters in the Group B population were affected by the change of food; however, a high reproductive capacity was evident in both groups when the specimens fed on leaves of the plant head, and the potentiality of both populations as pest of this crop was confirmed.

Keywords : biological parameters; budworm; life cycle; population parameters; tobacco.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )