Pustaka Ilmiah Universitas Padjadjaran

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Biologi dan Kemampuan Memangsa Paederus fuscipes Curtis (Coleoptera: Staphylinidae) terhadap Bemisia tabaci Gennadius (Homoptera: Aleyrodidae) Biology and preying ability of Paederus fuscipes Curtis (Staphylinidae) on Bemisia tabad Gennadius (Homoptera: Aleyrodidae)

Bemisia tabaci merupakan hama tanaman di beberapa sentra produksi sayuran hingga mengakibatkan kerugian ekonomi sampai 100 %. Paederus fuscipes merupakan predator B. tabaci pada beberapa tanaman di Kecamatan Ciwidey, Bandung. Penelitian bertujuan untuk mengetahui biologi dan kemampuan memangsa imago P. fuscipes jantan terhadap nimfa B. tabaci. Percobaan menggunakan Rancangan Acak Kelompok yang terdiri alas lima perlakuan dan 5 ulangan. Perlakuan terdiri atas: infestasi 10, 20, 40, 80, clan. 160 nimfa B. tabaci per satu imago P. Fuscipes. Hasil pengamatan biologi menunjukkan bahwa sildus hidup P fuscipes berkisar antara 38-75 hari. Fase telur berkisar 4-7 hari, larva instar-1 berkisar 4-5 hari, larva instar-2 berkisar 6-9 hari, pra-pupa berkisar 2-3 hari, pupa berkisar 3-5 hari, dan lama hidup imago berkisar 19-46 hari. P. fuscipes memperlihatka.n tanggap fungsional terhadap peningkatan kepadatan B. tabaci sebagai mangsa. Jumlah pemangsaan nimfa B tabaci tertinggi terjadi pada kepadatan 160 nimfa, yaitu 101,1 dan 100,1 nimfa B. tabaci per imago P. fuscipes, masing-masing untuk periode pagi dan sore. Kecepatan memangsa imago P. fusdpes terhadap nimfa B. tabaci yaitu berkisar 0,83-8,17 nimfa per jam pada slang hari, dan 0,75-8 nimfa per jam pada ma’am hari.

Bemisia tabaci is one of the major in vegetable production and causes economic lost up to 100 %. It was reported that Paederus fuscipes is able to prey B. tabaci in vegetables field in Ciwidey, Bandung. The greenhouse studies were conducted to observe the biology of P. fuscipes and its adult male feeding ability on B. tabaci. The experiment was arranged in Completely Randomized Block Design with five treatments and five replications. The treatments were infesting 10, 20, 40, 80, and 160 nymphs of B. tabaci per one adult P. fusdpes. The result showed that the life cycle of P. fusdpes was 38-75 days. The egg stage was 4-7 days, the Pt instar larvae stage was 4-5 days, the god instar larvae stage was 6-9 days, the pre-pupae stage was 2-3 days, the pupae stage was 3-5 days and the adult stage was 19-46 days. P. fuscipes responsed functionally to the increase of B. tabaci nymph density. One adult of P. fuscipes was able to feed up to 101.1 nymph in the afternoon period and 100.1 in the morning period, or 0.83-8.17 nymphs per hour on the day and 0.75-8 nymphs per hour in the night.