Abstract
The gall fly, Cecidochares connexa (Macquart) was first introduced to Indonesia to control the invasive weed Chromolaena odorata (L.) King & Robinson or kirinyuh. The purpose of this study was to determine the effect of habitat type and location, and the presence of natural enemies associated with gall flies on their level of attack. This research was be conducted in various types of habitat in Bogor and South Lampung from January to December 2019. Thirty plant samples were obtained using the area species curve method. Sampling was conducted to collect gall in each habitat, it was followed by rearing gall for ± 1 month to see insects that came out from the gall at the Biological Control Laboratory, Department of Plant Protection, Faculty of Agriculture, IPB University. The results of this study indicate that the location of the observation affects the level of attack on gall flies against kirinyuh and parachitization of gall flies by parasitoid, while the habitat does not affect both. Then there are other insects associated with kirinyuh in addition gall flies in gall, namely Lonchaea sp.
Highlights
Invasi spesies eksotik merupakan salah satu ancaman terbesar bagi keanekaragaman hayati (Loveridge et al 2016) karena dapat menjadi komponen utama dalam perubahan lingkungan global, ancaman terhadap keanekaragaman hayati dan spesies lokal, penyebab terjadinya perubahan struktur dan fungsi ekosistem serta hilangnya fungsi biodiversitas (Jose et al 2009; Charles & Dukes 2008)
The purpose of this study was to determine the effect of habitat type and location, and the presence of natural enemies associated with gall flies on their level of attack
This research was be conducted in various types of habitat in Bogor and South Lampung from January to December 2019
Summary
Lalat puru Cecidochares connexa (Macquart) (Diptera: Tephritidae) pertama kali diintroduksi ke Indonesia untuk mengendalikan gulma invasif Chromolaena odorata (L.) King & Robinson atau kirinyuh. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh tipe dan lokasi habitat, dan keberadaan musuh alami yang berhubungan dengan lalat puru terhadap tingkat serangannya. Penelitian dilakukan di berbagai tipe habitat di Bogor dan Lampung Selatan dari bulan Januari hingga Desember 2019. Tiga puluh sampel tanaman diperoleh dengan menggunakan metode kurva spesies area. Pengambilan sampel dilakukan dengan cara mengumpulkan puru di setiap lokasi dan habitat, kemudian dilakukan pemeliharaan puru selama ±1 bulan untuk melihat serangga yang keluar dari dalam puru di Laboratorium Pengendalian Hayati, Departemen Proteksi Tanaman, Fakutas Pertanian, IPB University. Hasil penelitian ini menunjukkan bahwa lokasi pengamatan mempengaruhi tingkat serangan lalat puru terhadap kirinyuh dan parasitisasi lalat puru oleh parasitoid, sedangkan habitat tidak mempengaruhi keduanya. Terdapat serangga lain yang berasosiasi dengan kirinyuh selain lalat puru di dalam puru, yaitu Lonchaea sp
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