Patrón de emergencia,longevidad,parasitismo y proporción sexual de Telenomus remus (Hymenoptera:Scelionidae)con relación al cogollero del maíz

Adult emergence pattern, longevity, egg parasitism, and sex ratio of Telenomus remus (Hymenoptera: Scelionidae) in relation to the fall army worm Laboratory studies were conducted to gain new understanding on the biology of the parasitoid Telenomus remus Nixon. Spodoptera frugiperda (J. E. Smith) eggs served as the host. Both the parasitoid and the host were mass reared under laboratory conditions. When newly mated female parasitoids were confined to several host egg densities used to determine the adult emergence patterns, those 1-day old produced the most offspring (22.5-71.8%). Counts started on day 1 had accumulated by fourth day an adult emergence of 70 to 100%. Adult longevity of T. remus at densities of 50 host eggs reached 21 days, while at densities of 200 or 250 host eggs, adults only lived 10-11 days. Mated adult female parasitoids, 1-4 days old, confined to egg samples (0-24 hour old) resulted in an average egg-parasitism of 63.6 to 75.3%. When confined to different egg samples (24-48 or 48-60 hour old) the average parasitism was only 2.6 to 6.9. Sex ratios of parasitoid progeny increased from 1:5.8 to 1:2.8 (male:female) as the age of host eggs increased from 0-24 to 48-60 hours of age. Additional key words: Parasitoid, egg parasitism, Spodoptera frugiperda