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All Journal Jurnal Natur Indonesia Cropsaver : Journal of Plant Protection AGRIVITA, Journal of Agricultural Science JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Jurnal Hilirisasi IPTEKS (JHI) Jurnal Entomologi Indonesia Akta Agrosia jurnal abdimas saintika Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Kesehatan Saintika Meditory Jurnal Salingka Abdimas Journal Research of Social Science, Economics, and Management Asian Journal of Social and Humanities Jurnal Bidan Mandiri
Arneti Arneti
Department Of Plant Protection, Faculty Of Agriculture, Andalas University, Kampus Unand Limau Manis, Padang, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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Journal : Cropsaver : Journal of Plant Protection

 1 
Sub-lethal Competition of Joint Predators (Pardosa pseudoannulata and Menochilus sexmaculatus) when Predating Nilaparvata lugens at Different Densities Siregar, Riza Wardani; Syahrawati, My; Arneti, Arneti; Hamid, Hasmiandy
CROPSAVER Vol 6, No 1 (2023)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v6i1.42864

Abstract

Pardosa pseudoannulata and Menochilus sexmaculatus are two predators of the brown planthopper (BPH, Nilaparvata lugens, Hemiptera: Delphacidae) in rice fields. The research aimed to determine the predation and the competition model of P. pseudoannulata and M. sexmaculatus on different BPH densities. This study used a completely randomized design (CRD) factorially. The first factor was the difference in predator species (P. pseudoannulata, M. sexmaculatus, and a combination of predators P. pseudoannulata + M. sexmaculatus), and the second was the difference in N. lugens density (0, 30, 50, and 70 individuals). The treatment was repeated in 4 repetitions. The parameters observed were predatory and competitive behavior, predation rate, body weight gain, and competition model. The research showed that P.pseudoannulata was more aggressive in finding and catching prey than M. sexmaculatus. The more prey provided, the higher the predation rate of the two predators. The combination of them as joint predators has increased the pressure on BPH and the predation rate, although it was still below its potential. Sub-lethal competition occurred between the two predators; it did not affect P.pseudoannulata but affected the behavior and reduced body weight of M. sexmaculatus. The competition between the two predators was not influenced by BPH density but by the intensity of meeting time. Both as joint predators in rice fields are safe and beneficial for BPH control.
Does competition between Pardosa pseudoannulata and Menochilus sexmaculatus reduce the predation rate on brown planthopper? Septriani, Utari; Syahrawati, My; Arneti, Arneti
CROPSAVER Vol 6, No 2 (2023)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cropsaver.v6i2.51131

Abstract

Pardosa pseudoannulata and Menochilus sexmaculatus are classified as natural enemies of the brown planthopper or BPH (Nilaparvata lugens). This study aimed to determine the effect of differences in density on mortality and their predation rate in suppressing the BPH population. This study used a completely randomized design of 15 treatments and 3 replications. The treatments consisted of different densities of two predators (1, 2, and 3 individuals). The variables observed were predator mortality, predation rate, competition between predators, and competition behavior. The results showed that competition between predators at different densities was not directly related to predator mortality and the predation rate of joint predators. Predator density tended to increase the predation rate, especially on M. sexmaculatus (R=0.894), while the density of P. pseudoannulata and joint predators was moderate (Rpardosa=0.587, Rjoint=0.522). M. sexmaculatus won the competition when its population increased. Equal competition occurred in the composition of 1 P. pseudoannulata and 3 M. sexmaculatus (P1M3); in this composition, no deaths were found due to competition, with the predation rate reaching 86.7%. Cannibalism dominates intraspecific competition between individuals of P. pseudoannulata, while interspecific competition occurs between the two species, causing sub-lethal effects.
Co-Authors . Reflinaldon Alyxia Gita Stellata Amri, Lutfir Rahman Angga Ferdiyansyah bachtar, fitrina DADANG DADANG Dariani, Lili Darmadi, Dedi Darmayanti Darmayanti Dedi Darmadi DJOKO PRIJONO Edriwilya, Rifa Eka Candra Lina EKA CHANDRA LINA Elfitri Syahdia Eri Sulyanti Ernis, Gustria Eva Zulaikha Fradilla Swandi Haliatur Rahma, Haliatur Hasmiandy Hamid Hasrah Murni Ismi Fadhilah Sinaga James Rinaldi Kornelia, Kori Lili Dariani Liswarni, Yenny M, Ghezi Lhoura. Martinius Martinius Munadi Munadi Munzir Busniah Murti, Kresna MY SYAHRAWATI Nia Yulianti Nova Yurina Noveri, Noveri NOVRI NELLY Nurfitri Sari Nurul Fitriyah Nurwijayanti rahmi, sania lailatu Reflin Reflin Reflin Reflin Rifa Edriwilya Rinaldi, James Ryan Hidayat Safitri, Dea Sandra Desiska Septia, Cheeqa Mardevi Septriani, Utari Sinaga, Ismi Fadhilah Siregar, Riza Wardani Siti Khadijah Sulyanti, Eri Sulyanti, Eri Swandi, Fradilla Syafitri Syafitri Syafitri, Syafitri SYAHRAWATI, MY Tre Julia Nasral UJANG KHAIRUL Y, Darmayanti Yenny Liswarni Yulensri, Yulensri Yurina, Nova Zulaikha, Eva Zurai Resti