UTOMO KARTOSUWONDO
Faculty of Agriculture Bogor Agricultural University

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Wereng Pucuk Mete Sanurus indecora J (Hemiptera: Flatidae) sebagai Inang Ngengat Parasitoid (Epipyropidae : Lepidoptera) di Pertanaman Mete Pulau Lombok BAMBANG SUPENO; PUDJIANTO .; UTOMO KARTOSUWONDO
Jurnal Entomologi Indonesia Vol 4, No 2 (2007)
Publisher : Perhimpunan Entomologi Indonesia

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Abstract

This research was conducted in three areas, which has different in altitudes;  those areas are Gangga (50 m), Kayangan (4 m) and Bayan (170 m) above sea levels. The aim of this research was to observe monoculture system of cashew plantations from May 2007 until April 2008. The results of this research were (1) the number of Sanurus indecora J collected from the fields are 38.619 adults, which consist of 19.153 adult of green Sanurus and 19.466 adult of white Sanurus, (2) the number of Sanurus parasitited by Epipyropidae are 5.961 adult from 38.619, (3) the number of white Sanurus infested by Epipyropidae are 3.902 adult and 2.059 adult of green Sanurus, (4) white Sanurus is preferred by Epipyropidae than green Sanurus. Around 20 percent of white Sanurus adult are infested by Epipyropidae, (5) the parsitism of female Sanurus is higher compare to male. KEY WORDS: Sanurus indecora, Cashew, Moth Parasitoid, Epipyropidae, Natural enemy.
Persebaran Agens Hayati Neochetina spp. (Coleoptera: Curculionidae) Di Jawa Barat Dan DKI Jakarta SAPDI .; DAMAYANTI BUCHORI; UTOMO KARTOSUWONDO; S TJITROSEMITO; BANDUNG SAHARI
Jurnal Entomologi Indonesia Vol 3, No 1 (2006)
Publisher : Perhimpunan Entomologi Indonesia

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Abstract

The establishment of Neochetina spp. as biocontrol agent of waterhyacinth are related to the weevil’s ability to disperse and to increase their population sizes. The objective of this research was to study the distribution and abundance of Neochetina spp. at several areas in West Java and DKI Jakarta. The field research was done in several freshwater ecosystem infested by waterhyacinth, including Cibinong and Lido lakes in Bogor, irigation canal in Karawang, Muara Angke Sanctuary in North Jakarta, and Citarum Hulu river in Purwakarta, during April to August 2004. Coordinate and elevation of the research sites where N. eichhorniae and N. bruchi found were reported, while their abundances were observed by direct hand-collection technique. The results of the research showed that N. eichhorniae was widely distributed and established in most sampling sites, except in Karawang, whereas N. bruchi was not found in any sampling sites. Our observations also indicated that N. eichhorniae was distributed passively so that the weevil couldn’t colonize isolated habitats or locations.KEY WORDS: Neochetina spp., waterhyacinth, biological control, invasivesp.
Penyimpanan Suhu Rendah Berbagai Fase Hidup Parasitoid: Pengaruhnya terhadap Parasitisasi dan Kebugaran Trichogrammatoidea armigera Nagaraja (Hymenoptera: Trichogrammatidae) MURTIYARINI .; DAMAYANTI BUCHORI; UTOMO KARTOSUWONDO
Jurnal Entomologi Indonesia Vol 3, No 2 (2006)
Publisher : Perhimpunan Entomologi Indonesia

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Abstract

T. armigera is one of the potential egg parasitoids. The aim of this research was to study the effects of low temperatures ( 9ºC and 15ºC) on the fitness of T. armigera. The design of the experiments is a factorial design with two factors (temperature and age of parasitoid), with 10 replicates. Fitness were measured based on the survival, fertility, size, sex ratio, lifespan and fecundity. Result showed that the emergence of T. armigera was postponed by 2-5 days under low temperatures. Temperatures had a more significant effect than age of parasitoid. The postponement of adult emergence is very useful in regard to field application schedules. Percentage of adults emergence, sex ratio, egg productivity, fecundity tended to decrease under low temperatures, the length of female adult wings varied in each treatment and it tended to be shorter in 9ºC, while the width of female adult heads was almost similar in all treatment except in untreated control. These characters are very important in determining the fitness of the parasitoid in the field.KEY WORDS: Trichogrammatoidea armigera, egg parasitoid, temperature, fitness,age.
Implikasi Keberadaan Agens Hayati Neochetina eichhorniae (Coleoptera: Curculionidae) Terhadap Eceng Gondok SAPDI .; DAMAYANTI BUCHORI; UTOMO KARTOSUWONDO; SUKISMAN TJITROSEMITO; BANDUNG SAHARI
Jurnal Entomologi Indonesia Vol 4, No 1 (2007)
Publisher : Perhimpunan Entomologi Indonesia

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Abstract

The effectiveness of Neochetina eichhorniae as a biocontrol agent of waterhyacinth was evaluated in West Java and DKI Jakarta. The objective of this research was to study the implication of the existence of N. eichhorniae on waterhyacinth. Research was conducted in several freshwater ecosystem infested by waterhyacinth and N. eichhorniae, including Cibinong and Lido lakes (Bogor District), Muara Angke Sanctuary (North Jakarta), and Citarum Hulu river (Purwakarta District), conducted during April to August 2004. The impact of N. eichhorniae on waterhyacinth was evaluated by leaf damage intensity and growth parameter of the plant. Results showed that there was no correlation between waterhyacinth and the occurrence of the N. eichhorniae. The population of N. eichhorniae adults was significantly low in any locations studied. Thus, the existence of the biocontrol agent can not result in decreasing of waterhyacinth population. KEY WORDS: Neochetina eichhorniae, biocontrol, waterhyacinth.
Faculty of Agriculture Bogor Agricultural University UTOMO KARTOSUWONDO
BIOTROPIA No 4 (1991)
Publisher : SEAMEO BIOTROP

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Abstract

Laboratory and  field experiments were conducted to evaluate the potential role of  two species of wild crucifers  in the preservation of Diadegma eucerophaga Horstman, a parasitoid of  the diamondback moth, Plutella xylostella Linnaeus. In the laboratory, D. eucerophaga developed quite well on P. xylostella larvae fed on leaves of two species of wild cruciferous plants, Nasturtium heterophyllum BL. and Cardamine hirsuta L. These wild crucifers may serve as food and oviposition sites for P. xylostella. In the field, N. heterophyllum and C.  hirsuta  planted  adjacent  to  insecticide-treated  cabbage  plots  provided  refuge  for  D.  eucerophaga parasitoids.
Parasitoid Telur pada Hama Kubis Plutella xylostella (L.) (Lepidoptera : Yponomeutidae) Araz Meilin; Purnama Hidayat; Damayanti Buchori; Utomo Kartosuwondo
Buletin Hama dan Penyakit Tumbuhan Vol 12, No 1 (2000): Buletin Hama dan Penyakit Tanaman
Publisher : Buletin Hama dan Penyakit Tumbuhan

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Abstract

Egg parasitoids of the diamonback mont, Plutella xylostella (L.) (Lepidoptera : Yponomeutidae) have never been reported in Indonesia. In this study, eggs of P.xylostella were collected from cabbage planation in Cisarua-Bogor, Ciloto-Cianjur, Cikole-Lembang (West Java), Tawangmangu (Central Java), and Malang (East Java). Three species of parasitoids were colleted from all areas, Trichogrammatoidea armigera Nagaraja emerged from eggs colledted from Cisarua-Bogor, Cikole-Lembang, and Ciloto-Cianjur, and Trichogramma flandersi Nagaraja and Nagarkatti (Hymenoptera : Trichogrammatidae) was only found from the eggs collected from Tawangmangu. The morphological character of the parasitoids are discussed