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Adha Sari
Departemen Proteksi Tanaman, Fakultas Pertanian, Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Pengaruh ketiadaan inang terhadap tanggap reproduksi Trichogrammatoidea armigera Nagaraja dan Trichogramma japonicum Ashmed (Hymenoptera: Trichogrammatoidea) dan implikasinya terhadap penerimaan inang Anis Rohmani; Damayanti Buchori; Adha Sari
Jurnal Entomologi Indonesia Vol 5 No 2 (2008): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.281 KB) | DOI: 10.5994/jei.5.2.71

Abstract

Trichogrammatoidea armigera and Trichogramma japonicum are polyphagous egg parastioids, that are important as natural enemies. The objective of this research was to study the effect of host deprivation on reproductive capacity of T. armigera and T. japonicum. This study consists of 8 treatments, host deprivation : 0 hour, 1 hour, 2 hours, 3 hours, 6 hours, 12 hours, and 48 hours. Host were replaced every 24 hours. Results showed there are difference with respect of how the two parasitoids respond to the treatment. Deprivation of host for 3 hours in T. armigera resulted in the increase of egg production and parasitism rate. After 12 and 24 hours of not encountering any hosts, the numbers of eggs produced drastically decreased. Treatment on T. japonicum resulted in the reaction of fecundity and parasitism rate overall. Forty eight hours of host deprivation resulted in death of both parasitoids species within 2 days. None of the parasitoids seems to produce any egg.
Keefektifan Telenomus remus (Nixon) (Hymenoptera: Scelionidae) dalam mengendalikan hama tanaman bawang daun Spodoptera exigua Hübner (Lepidoptera: Noctuidae) Damayanti Buchori; Erna Dwi Herawati; Adha Sari
Jurnal Entomologi Indonesia Vol 5 No 2 (2008): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.037 KB) | DOI: 10.5994/jei.5.2.81

Abstract

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.
Co-Authors Anis Rohmani DAMAYANTI BUCHORI Erna Dwi Herawati