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Impact of Invasive Ant Species in Shaping Ant Community Structure on Small Islands in Indonesia Rizali, Akhmad; Rahim, Abdul; Sahari, Bandung; Prasetyo, Lilik Budi; Buchori, Damayanti
JURNAL BIOLOGI INDONESIA Vol 7, No 2 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i2.3083

Dampak Invasiv Species Semut pada Pembentukan Struktur Komunitas Semut di KawasanÂ Pulau-Pulau Kecil di Indonesia. Peneletian tentang pengaruh spesies invasif di kawasanÂ pulau-pulau kecil menjadi perhatian konservasi yang sangat penting,teristimewa pengaruhnyaÂ terhadap fauna lokal dan teristimewa untuk semut-semut endemik yang menjadi kajian padaÂ penelitian ini. Pada kajian ini penelitian dilakukan di tiga pulau yaitu Pulau Bokor, Rambut danÂ Untung Jawa. Semut diambil menggunakan metode pitfall trap. Metode penghitungan denganÂ model korelasi dan linier digunakan untuk mengukur penyebarannya secara acak di setiapÂ pulau. Diperoleh tiga species invasif dua diantaranya yaitu Solenopsis geminata danÂ Paratrechina longicornis dapat dijumpai di ketiga pulau tersebut sedangkan untuk AnoplolepisÂ gracilipes hanya dijumpai di Pulau Rambut. A. gracilipes dan S. geminata merupakan spesiesÂ yang melimpah dan komposisi keterdapatannya berkorelasi dengan faktor habitat (F2, 52 =Â 19.469, p<0.001).Kata kunci: Semut, keragaman jenis, spesies invasif

Keanekaragaman Burung di Lanskap Perkebunan Kelapa Sawit di Desa Sungai Sagu Kabupaten Indragiri Hulu, Provinsi Riau KURNIAWAN, DEBBY; YULMINARTI, YULMINARTI; SAHARI, BANDUNG
Jurnal Riau Biologia Vol 3, No 1 (2018)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Konversi hutan menjadi perkebunan kelapa sawit di Desa Sungai Sagu Kabupaten Indragiri Hulu, ProvinsiRiau, diduga dapat mempengaruhi keberadaan dan kehadiran burung di area tersebut. Penelitian inibertujuan untuk mengetahui keanekaragaman burung di tiap habitat. Penelitian ini dilaksanakan pada bulanJanuari sampai Februari 2016. Burung diamati menggunakan metode IPA (Index Point of Abundance),dengan mengoleksi data pada transek sepanjang satu km pada tiap habitat. Analisis keanekaragaman burungpada pada penelitian ini menggunakan Indeks Shannon-Wiener. Hasil penelitian pada ketiga tipe habitatdijumpai 35 spesies yang termasuk kealam 22 famili burung dengan jumlah total 823 individu. Habitatsempadan sungai memiliki nilai keanekaragaman jenis burung tertinggi, selanjutnya arboretum danperkebunan kelapa sawit memiliki nilai yang lebih rendah, dengan indeks Shannon-Wiener secara berturutturutadalah 3,023, 2,911 dan 2,500.

IMPACT OF INVASIVE ANT SPECIES IN SHAPING ANT COMMUNITY STRUCTURE ON SMALL ISLANDS IN INDONESIA Rizali, Akhmad; Rahim, Abdul; Sahari, Bandung; Prasetyo, Lilik Budi; Buchori, Damayanti
JURNAL BIOLOGI INDONESIA Vol 7, No 2 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i2.3083

Dampak Invasiv Species Semut pada Pembentukan Struktur Komunitas Semut di Kawasan Pulau-Pulau Kecil di Indonesia. Peneletian tentang pengaruh spesies invasif di kawasan pulau-pulau kecil menjadi perhatian konservasi yang sangat penting,teristimewa pengaruhnya terhadap fauna lokal dan teristimewa untuk semut-semut endemik yang menjadi kajian pada penelitian ini. Pada kajian ini penelitian dilakukan di tiga pulau yaitu Pulau Bokor, Rambut dan Untung Jawa. Semut diambil menggunakan metode pitfall trap. Metode penghitungan dengan model korelasi dan linier digunakan untuk mengukur penyebarannya secara acak di setiap pulau. Diperoleh tiga species invasif dua diantaranya yaitu Solenopsis geminata dan Paratrechina longicornis dapat dijumpai di ketiga pulau tersebut sedangkan untuk Anoplolepis gracilipes hanya dijumpai di Pulau Rambut. A. gracilipes dan S. geminata merupakan spesies yang melimpah dan komposisi keterdapatannya berkorelasi dengan faktor habitat (F2, 52 = 19.469, p<0.001).Kata kunci: Semut, keragaman jenis, spesies invasif

EFFECT OF NATURAL HABITAT ON DIVERSITY OF HEMIPTERAN PREDATOR IN OIL PALM PLANTATION Rizali, Akhmad; Himawan, Toto; Fitriani, Ima; Rahardjo, Bambang Tri; Karindah, Sri; Puspitarini, Retno Dyah; Sahari, Bandung
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Effect of Natural Habitat on Diversity of Hemipteran Predator in Oil Palm Plantation. Utillization of natural enemies in controlling oil palm pests still encounters obstacles, in particular, how natural enemies can survive and establish in oil palm plantations. The existence of natural habitats around oil palm plantations can allegedly support the occurence of natural enemies. The objective of this study was to investigate the effect of the presence of natural habitats on diversity of hemipteran predators in oil palm plantations. Field research was conducted in oil palm plantations located in Pangkalan Bun, Central Kalimantan. The plots were oil palm plantations with different distances from natural habitat i.e. near (less than 200 m), medium (about 2 km) and far (about 5 km). Each plot was selected six trees for fogging using insecticide with active ingredient lamda cyhalothrin. Based on research result, diversity of hemipteran predator in oil palm plantion was found 19 species belong to 2 families. The most dominant hemipteran predator was Sycanus sp., Eocanthecona sp. and Reduviidae sp5. The distance of oil palm plantation from natural habitat did not affect species richness, abundance and composition as well as recolonization of hemipteran predator in oil palm plantation. Abundance of hemipteran predator tend to decrease in different observation time, except Sycanus sp. Sycanus sp was likely has ability to rapidly recolonized and their occurrence were influenced by flowering vegetation in oil palm plantation.

Conservation of Agroecosystem through Utilization of Parasitoid Diversity: Lesson for Promoting Sustainable Agriculture and Ecosystem Health DAMAYANTI BUCHORI; BANDUNG SAHARI; NURINDAH NURINDAH
HAYATI Journal of Biosciences Vol. 15 No. 4 (2008): December 2008
Publisher : Bogor Agricultural University, Indonesia

For many years, agricultural intensification and exploitation has resulted in biodiversity loss and threaten ecosystem functioning. Developing strategies to bridge human needs and ecosystem health for harmonization of ecosystem is a major concern for ecologist and agriculturist. The lack of information on species diversity of natural enemies and how to utilize them with integration of habitat management that can renovate ecological process was the main obstacle. Parasitoids, a group of natural enemies, play a very important role in regulating insect pest population. During the last ten years, we have been working on exploration of parasitoid species richness, how to use it to restore ecosystem functions, and identifying key factors influencing host-parasitoid interaction. Here, we propose a model of habitat management that is capable of maintaining agricultural biodiversity and ecosystem functions. We present data on parasitoid species richness and distribution in Java and Sumatera, their population structure and its impact toward biological control, relationship between habitat complexes and parasitoid community, spatial and temporal dynamic of parasitoid diversity, and food web in agricultural landscape. Implications of our findings toward conservation of agroecosystem are discussed. Key words: conservation, agroecosystem, parasitoid, diversity, ecosystem health

Eriborus argenteopilosus is the most important parasitoid attacking cabbage pest Crocidolomia pavonana in Indonesia. Previous studies proved that parasitoid encapsulation was found to be an important factor limiting the effectiveness of the parasitoid in controlling pest population in the field. Since 1998, we have conducted series studies to investigate encapsulation mechanism developed by hosts against parasitoid, responses of parasitoid toward encapsulation ability and to determine factors t DAMAYANTI BUCHORI; BANDUNG SAHARI; ENDANG SRI RATNA
HAYATI Journal of Biosciences Vol. 16 No. 4 (2009): December 2009
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.16.4.135

Eriborus argenteopilosus is the most important parasitoid attacking cabbage pest Crocidolomia pavonana in Indonesia. Previous studies proved that parasitoid encapsulation was found to be an important factor limiting the effectiveness of the parasitoid in controlling pest population in the field. Since 1998, we have conducted series studies to investigate encapsulation mechanism developed by hosts against parasitoid, responses of parasitoid toward encapsulation ability and to determine factors that may help parasitoid avoid encapsulation. Parasitoid responses were examined on two different hosts C. pavonana and Spodoptera litura. Our findings showed that parasitization level was found to be high both on C. pavonana and S. litura. Encapsulation occurred to be high in all larva stages of C. pavonana, in contrast encapsulation was recorded very low in all larvae stages of S. litura. We recorded that encapsulation in the larval body of C. pavonana was completed in 72 hours and mostly occurred in higher larval stage. Melanization was only recorded in encapsulated parasitoid inside larva body of C. pavonana, not in S. litura. We recorded that encapsulation increased blood cell number of both larvae C. pavonana and S. litura. Encapsulation may affect development of immature parasitoid. Weight of S. litura’s pupae containing encapsulated parasitoid was found to be lower in S. litura, but not in C. pavonana. Our investigation also proved that superparasitism may help parasitoid avoid encapsulation. Key words: parasitoid, encapsulation, melanization, blood cell number, superparasitism

Dinamika Populasi Kompleks Parasitoid Telur Helicoverpa armigera (Hubner) Pada Ekosistem Kapas Monokultur dan Kapas Tumpangsari dengan Jagung Damayanti BUCHORI; Bandung SAHARI; Dwi Adi SUNARTO
Jurnal Pengendalian Hayati Vol 1 No 2 (2008)
Publisher : Fakultas Pertanian Universitas Jember

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Eggs of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) on its host plants could beparasitized by some species of parasitoids, especially of the genus Trichogrammatoidea andTrichogramma. This research was aimed to study the population dynamics of egg parasitoids of H.armigera on unsprayed fields of cotton monoculture and intercropped with maize. The plot size ofeach field was 19 m x 20 m, with five replicates. We collected H. armigera eggs from both fieldsperiodically since 23 days after planting (dap) to 100 dap. The eggs were collected on 9 sample units(size of sample unit: 1 m2) in 7-days interval. The number of collected and parasitized eggs wasrecorded and the emerged parasitoids were identified to species level. The result showed that thefluctuation pattern of H. armigera egg population was not different on cotton monoculture and cottonintercropped with maize. The parasitoid population was relatively high during the flowering phase ofcotton and maize. The parasitoids of H. armigera eggs found in cotton monoculture and cottonintercropped with maize were T’toidea armigera, T’toidea guamensis, T’toidea bactrae bactrae,T’toidea bactrae fumata, T. chilonis and T. chilotraeae . The dominant species on early season untilthe flowering phase of the plants was T’toidea armigera, while on the latter phase of the plantphenology was T. chilotraeae. Implication of this population dynamics and the succession of theparasitoids in biological control are discussed.

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