Keefektifan Telenomus remus (Nixon) (Hymenoptera: Scelionidae) dalam mengendalikan hama tanaman bawang daun Spodoptera exigua Hübner (Lepidoptera: Noctuidae)

Abstract

<jats:p>The objective of this research is to study the effectiveness of T. remus as biocontrol agent for S. exigua. The study was conducted by releasing a set of T. remus females on potted onion plants that have been attacked by S. exigua. Three different parasitism level was artificially created by releasing different numbers of females: low rate parasitism (release of 4 adult females), moderate parasitism (7 females) and high parasitism level (11 females). The result of this study showed that T. remus is effective to control S. exigua population. Up to 48.2% of S. exigua. population was able to be suppressed by the high parasitism level. Rate of parasitisation was more when more adult female T. remus was released. Release of 11 adult female of T. remus can increase the population level of the parasitoid up to 24.1 times than the initial population. This express that T. remus is a mortality factor which can regulate the population of S. exigua. However, the succesfull parasitisation of T. remus is also dependent on environmental factors such as temperature, humidity, food, and host suitability.</jats:p>

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

“…The parasitoid antennae of T. remus exhibit sexual dimorphism. Male antennae have 12 segments, whereas female antennae have 11 parts, including four mace segments [24].…”

The Potential of Telenomus remus Nixon (Hymenoptera: Scelinoidae) as Biocontrol Agent for the New Fall Armyworm S. frugiperda (Lepidoptera: Noctuidae) in Indonesia

“…Liao et al (2019) reported 60.19% field parasitism rate of S. frugiperda by T. remus.. So far, T. remus has been reported to be used as a biological control agent of S. litura (Susiawan & Yuliarti, 2017) and S. exigua (Buchori et al, 2017), another armyworm pest species that have long been existed in Indonesia (Kalshoven, 1981). In this study, we compare the performance of T. remus in parasiting S. frugiperda and S. litura under laboratory conditions.…”

“…Telenomus remus is an egg parasitoid of various lepidopteran pest species including genus Spodoptera (CABI, 2019b). Buchori, Herawati, and Sari (2017) reported that the release of T. remus able to suppress 48% population of S. exigua in potted onion plants. Meanwhile, Satyanarayana, Ballal, and Rao (2005) reported 96% parasitism rate of S. litura eggs by T. remus.…”

The capacity of Trichogramma chilotraeae (Hymenoptera: Trichogrammatidae) to parasitize Spodoptera frugiperda reared with natural diet vs artificial diet vs alternate host

“…[8,15]. Telenomus and Trichogramma are egg parasitoids that have the potential to become natural enemies of many important pests [16], such as Scirpophaga innotata [17], Helicoverpa armigera [18], Ostrinia furnacalis [19], and S. exigua [20]. Sari et al [12,13] has researched T. remus's potential as S. frugiperda's egg parasitoid.…”