ABSTRACT
Dona Monica Br. Bangun “The Predation Ability of Some Predator on Larvae and Imago of Brontispa longissima Gestro. (Coleoptera : Chrysomelidae)
in Laboratory”, under guidance of Ir. Syahrial Oemry and Ir. Mukhtar Iskandar Pinem, M.Agr. The objectives of this research were to study
the predation ability of some predator on larvae and imago of
Brontispa longissima Gestro. (Coleoptera : Chrysomelidae) in Laboratory. The research was held at the laboratory of pest and plant disease, Agroecotechnology Program Study, Agricultural Faculty, University of Sumatera Utara, Medan on Mei until Juni 2013. This methode used Randomized Complete Design divided be 8 treatments and 3 replications. The tested treatment were larvae and imago of B. longissima, 2 cocopets, 2 black ants, 1 cocopet and 1 black ant on 10 larvaes/ stoples and 2 cocopets, 2 black ants, 1 cocopet and 1 black ants on 10 imagoes/ stoples with 3 replications. Parameters observed were percentage of mortality, the way of predators to prey and predator interactions.
The results showed that the highest percentage of mortality on P1 (2 cocopets on 10 larvaes/ stoples) was about 96,67% and the lowest on P01 (larvae control) was about 0%.
Key words: Predation, Brontispa longissima Gestro, percentage mortality.
ABSTRAK
Dona Monica Br Bangun “Uji Daya Predasi Beberapa Predator Terhadap
Larva dan Imago Hama Perusak Pucuk Kelapa Brontispa longissima Gestro. (Coleoptera : Chrysomelidae) di Laboratorium” di bawah bimbingan Ir. Syahrial Oemry, M.S dan Ir. Mukhtar Iskandar Pinem, M. Agr. Penelitian ini
bertujuan untuk mengetahui uji daya predasi beberapa predator terhadap larva
dan imago hama perusak pucuk kelapa Brontispa longissima Gestro. (Coleoptera : Chrysomelidae) di Laboratorium. Penelitian ini dilaksanakan di Laboratorium Hama dan Penyakit Program Studi Agroekoteknologi Fakultas Pertanian Universitas Sumatera Utara, Medan pada Bulan Mei-Juni 2013. Metode yang digunakan adalah Rancangan Acak Lengkap (RAL) non Faktorial yang terdiri dari 8 perlakuan dan 3 ulangan. Perlakuan yang diuji yaitu kontrol
larva dan imago hama perusak pucuk kelapa, 2 cecopet, 2 semut hitam, 1 cecopet dan 1 semut hitam terhadap 10 larva/ stoples dan 2 cecopet, 2 semut
hitam, 1 cecopet dan 1 semut hitam terhadap 10 imago/ stoples dengan 3 ulangan. Parameter yang diamati meliputi persentase mortalitas, cara predator memangsa dan interaksi antar predator.
Hasil penelitian menunjukkan bahwa persentase mortalitas tertinggi terdapat pada perlakuan P1 (2 cecopet terhadap 10 larva/ stoples) yaitu sebesar 96.67% dan yang terendah pada perlakuan P01 (kontrol larva) sebesar 0%.
Kata Kunci : Predasi, Brontispa longissima Gestro, Persentase Mortalitas.
