Jurnal Entomologi Indonesia
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Tingkat Kesukaan Lebah Madu Apis Mellifera L. terhadap Pakan Tambahan Campuran Madu Mengkudu
No full textFeeding supplementary food containing nony fruit juice was tested on honeybee colonies in honey producing . The aims of this research were (1) to determine the preference level of honeybees to the supplementary food containing honey and nony mixture, (2) to identify the organoleptic properties of the produced honeyessence of nony, (3) to determine fiber content of produced honey-essence of nony, and (4) to identify the colours of honey produced. The design used in the experiment was Latin Square Design. There were four treatments namely each concentration : A (0%) as control, B (12,5%), C (25%) dan D (37,5%) in dilution of supplementary food an amount of 600 grams wich consist of nony fruit juice and water. Each composition of dilution were A (300, 0, 300), B (225, 75, 300), C (150, 150, 300) dan D (75, 225, 300) . Every one replication was done for six days with six day interval. The result were as follows: The higher concentration of nony juice in the food suplement the smaller food were taken. The differences in the olour, the flavour and the taste of the artificial honey didn’ depend on the amount of the food suplement taken honey bees, but depend on nony fruits juice concentration in the honey produced. The higher concentration of nony fruit juice in the artificial honey produced the darken in colour, sour in taste and the weaken in flavour. Feeding with food suplement containing nony juice increases the fiber content in the honey. KEY WORDS: Preference, nony , organoleptic, fiber
Wereng Pucuk Mete Sanurus indecora J (Hemiptera: Flatidae) sebagai Inang Ngengat Parasitoid (Epipyropidae : Lepidoptera) di Pertanaman Mete Pulau Lombok
No full textThis 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
Path Analysis as a Tool to Identify Indicators of Fitness Traits
No full textKarakter kebugaran, seperti keperidian, lama hidup, dan fertilitas sering digunakan untuk menggambarkan kapasitas reproduksi suatu spesies. Oleh karena itu, kebugaran parasitoid sering digunakan sebagai indikator potensial dari suatu kualitas keberhasilan di lapangan. Karakter tersebut dapat pula menggambarkan persistensi populasi parasitoid di lapangan selama periode tertentu. Dalam pengelolaan hama, kebugaran parasitoid menjadi indikator penting untuk kesuksesan pengendalian hayati. Beberapa faktor yang berkaitan dengan kualitas parasitoid adalah pengaruh nang, lama generasi dan asal-usul parasitoid. Path analysis digunakan untuk menganalisa pola hubungan dan keterkaitan antar variabel kebugaran. Tujuan penelitian ini adalah untuk mengidentifikasikan indikator sukses dari perilaku parasitisasi serta mempelajari mekanisme hubungan sebab akibat (causal meechanism) antar beberapa karakter kebugaran dari (T. armigera) yang menyerang (C. capholonica) dan H. armigera. Hasil analisis menunjukan adanya korelasi yang tinggi dengan lama hidup. Pada inang Cocryra, ditemukan bahwa panjang sayap depan memiliki nilai positif dengan parasitisme, sedangkan ukuran kepala dan laju keberhasilan hidup dapat dikategorikan sebagai indirect indicator melalui jmlah telur yang dihasilkan. KATA KUNCI: Interaksi inang parasitoid, pengendalian hayati, ekologi reproduksi, karakter kebugaran
Studi Keberadaan Hiperparasitoid dalam Mempengaruhi Perilaku Imago Parasitoid pada Kutudaun, Aphis gossypii (Hemiptera: Aphididae)
Full text linkStudy Hyperparasitoid Existing Affected to Adul Parasitoid Behavior on Aphid, Aphis gossypii (Hemiptera: Aphididae). In general, hyperparasitoid is needed for establishing food and chain webs, but in contrary, it could become a limiting factor in existing biological control program. An observation to aim positive impact of hyperparasitoid existence has been carried out. Chili plant, Capsicum annuum, Aphis gossypii, Trioxys sinensis parasitoid and Aphidencyrtus sp. were used in this observation. Results showed that hyperparasitoid existence assisted parasitoid distribution. Parasitoids were placed with hyperparasitoids enhanced parasitoid distribution or dispersion two times farther compare to without hyperparasitoids. It was concluded that dispersal behaviour of hyperparasitoid adult was a parasitoid adult’s response to avoid its suppression by the hyperparasitoid and also increase parasitoid’s searching ability. KEY WORDS: parasitoid, hiperparasitoid, Aphis gossypii, Trioxys sinensis, Aphidenchyrtus sp
Pengujian Bahan Formulasi MsNPV (Mythimna separata Nuclear Polyhedrosis Virus) terhadap Ulat Grayak Padi, Mythimna separata Walker di Lapangan
Full text linkThe objective of these studies were to observe efficiency material formulations of MsNPV and the influence to rice plantation on different locations (Indramayu (3 m above sea level), Sukabumi (400m above sea level) and Bogor (250 m above sea level) to larvae of rice army worm. This study used randomized block design with 4 treatments consisted of 3 formulation materials (talc, kaolin and gypsum) and control in five replications. Observations were done to life and death larvae on 5, 10, 15 days after inoculation and leaf damaged. Data were analysed with DMRT. Results from this study indicated that material talc formulation was more effective because all the material was dissolve as compare to material kaolin and gypsum formulations while the material were precipitated. Utilize these three material formulations on three different locations above sea level gave the same impact to the mortality army worm larvae and also to the plant damage. KEY WORDS: Rice, army worm, material formulations of MsNP
Pengaruh Beauveria bassiana terhadap Mortalitas Semut Rangrang Oecophylla smaragdina (F.) (Hymenoptera: Formicidae)
Full text linkThe study was conducted at the laboratory and cacao plantation in Kaliwining Jember, during August to November 2008. The objective of this research was to study the effect of B. bassiana on the mortality of larvae, pupae and adults of O. smaragdina. A factorial completly randomized design was used in the laboratory experiment. Two factors were tested in the experiment, the first factor was spore concentration; the second factor was the stadia of the ants (larva, pupa and adult). The experiment was replicated, 4 (four) times. The field research used a randomized block complete design with four treatments and four replications. Results of this study showed that B. bassiana was the mortality source of larva, pupa and adult stages of O. smaragdina. A concentration of 108 spores/ml B. bassiana was effective to control larvae and pupae of O. smaragdina.. KEY WORDS: Beaveria bassiana, mortality, Oceophylla smaragdina
Hubungan Iklim, Kepadatan Nyamuk Anopheles dan Kejadian Penyakit Malaria
Full text linkDistricts of South Lampung and Pesawaran are malaria endemic areas. The purpose of this study was to analyze the relationship between climate, Anopheles density and malaria incidence. Mosquito collections were caught by human landing collection all night 06:00 PM-06:00 AM. The relation of climate with Anopheles density and Anopheles density with malaria incidence were analysed by Pearson Product Moment test. The Anopheles bite all night, peaks with 02:00-04:00 AM, outdoor bitings were more frequent than indoor biting. There were relationships between relative humidity and rain fall with Anopheles density, and Anopheles density with malaria incidence one month later. KEY WORD: Climate, Anopheles density, malaria insidenc
Preferensi Kecoa Amerika Periplaneta americana (L.) (Blattaria: Blattidae) terhadap Berbagai Kombinasi Umpan
Full text linkCurrently, most cockroach control in urban environment relies on bait application. Aversion of some commercial bait by cockroach cause failure to control cockroach problems. Developing local bait can improve this situation. This research was aimed to find proper combination of some cockroach diet to be formulated in effective bait. Research was conducted in Department of Plant Protection, Bogor Agricultural University, since November 2007-March 2008. Combination of peanut butter, chicken egg, and strawberry jam seem to be a candidate of effective bait for local cockroach. KEY WORDS: American cockroach, bait, combination, preferenc
Effectiveness of BPMC Application against Bemisia tabaci (Gennadius) Population and CMMV Disease Incidence on Soybean
Full text linkControl of whitefly (Bemisia tabaci (Gennadius)) is the starting point in suppressing the CMMV disease (cowpea mild mottle virus). This study aims to determine the influence of applications BPMC (500 g a.i./l) against B. tabaci populations and disease incidence of CMMV on soybean plants. Research was conducted in the field with randomized complete block design consisting of 5 treatments i.e. five concentration levels: 0.75, 1.50, 2.25, and 3.00 ml/l including control (untreated) with 5 replications. The results showed that BPMC is effective in suppressing the adult population of B. tabaci and disease incidence of CMMV. KEY WORDS: Efficacy, whitefly, invasive species, insecticid
Reproduksi Hemiptarsenus varicornis (Hymenoptera: Eulophidae) : Pengaruh Ketinggian Tempat, Suhu dan Tanaman Inang terhadap Keperidian
No full textH. varicornis is a larval parasitoid of leafminer distributing and associating with several host plants in highland vegetables planting. Three experiments were conducted to study effects of elevations, temperatures and host plants on female reproduction fitness. The first experiment, we compared fitness traits of female originated from different elevation areas i.e Pandai Sikek (900-1000 m above sea level ), Alahan Panjang(1200-1300m) and Kayu Aro (1400-1500m) whilst two other experiments were treatment of temperatures level (18, 23, 280C), and host plants (red bean, bean and cucumber) to investigate longevity, egg layed, survivorship. Parasitoids originated from Kayu Aro showed the highest longevity and number of eggs. The best fitness also was performed when adult female maintained at 230C. Parasitism, superparasitism and paralization of the parasitoid have been discussed in this paper.KEY WORDS: Hemiptarsenus varicornis, Eulophidae, reproduction, altitude, fecundit