Telenomus r emus (Nixon) (Hymenoptera: Scelionidae) Biology and Life Table on Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) eggs

Abstract

Telenomus remus (Nixon) (Hymenoptera: Scelionidae), is an endoparasitoid on eggs of Spodoptera frugiperda (J. E. Smith). T. remus information as a natural enemy of S. frugiperda is limited. The research objective was to determine some biological aspects of T. remus, i.e., longevity, fecundity, and life table variables. The demographic statistics used the jackknife method. The parasitoids were obtained from the eggs of S. frugiperda from a maize plantation in the field. The released parasitoids were identified in the laboratory. Parasitoid identified as T. remus used to biological observations, life tables, sex ratios, and parasitization rate. The immature stage of T. remus reached 8.13 days, the longevity of the male was 10.07 days, while a female was 10.29 days with a fecundity of 75 eggs, and a sex ratio of male and female was 1:2.03. The life table parameters of T. remus, i.e., gross reproduction rate (GRR) was 74.987 individuals/generation, net reproduction rate (R0) was 67.485 females/female/generation, with generation period (T) was 8.541 days, and intrinsic growth rate (r) was 0.493 females/female/day. The Parasitization rate of T. remus reaches 91%. This research showed that T. remus has the potential natural enemy to control S. frugiperda.

Biologi dan neraca kehidupan ulat grayak jagung, Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) pada tongkol jagung muda (Zea mays Linn.) sebagai pakan alternatif

“…Studi biologi dan neraca kehidupan S. frugiperda pada pakan daun jagung (Hutasiot et al 2020;Priyanka et al 2021) dan batang jagung telah dilakukan (Gilal et al 2022). Selain itu, tongkol jagung muda telah digunakan sebagai pakan saat perbanyakan pada penelitian Maharani et al (2021) dan Octaviani et al (2021). Namun, informasi mengenai biologi dan neraca kehidupan S. frugiperda diberi pakan tongkol jagung muda belum diteliti.…”