Cultivar and Insecticide Applications Affect the Physiological Development of the Brown Planthopper, &lt;I&gt;Nilaparvata lugens&lt;/I&gt; (Stål) (Hemiptera: Delphacidae)

Yin, Jia; Xu, Huibin; Wu, Jin-Cai; Hu, Jun-Huan; Gao, Yang

doi:10.1603/0046-225x(2008)37[206:caiaat]2.0.co;2

Cited by 65 publications

(48 citation statements)

References 20 publications

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“…Recent outbreaks of N. lugens populations that occurred in China and other Asian countries were mainly associated with pesticide overuse and resistance to imidacloprid (Gao et al 2006, Liu andLiao 2006). The use of synthetic pyrethroids and organophosphates (triazophos) is also likely to induce the population resurgence (Reissig et al 1982, Wang et al 1994, Gu et al 1996, Yin et al 2008. The insecticideinduced resurgence of N. lugens populations has been attributed to the reduction of natural enemy populations (Fabellar andHeinrichs 1986, Gao et al 1988) and the stimulation of fecundity (Gu et al 1984, Wang et al 1994, Zhuang et al 1999, Cheng et al 2003.…”

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confidence: 99%

Insecticide-Induced Changes in Protein, RNA, and DNA Contents in Ovary and Fat Body of Female <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae)

et al. 2009

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The widespread use of insecticides is known to cause resurgence in Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) populations, a serious insect pest of rice, Orzya sativa L., crops in Asia. The current study investigated insecticide-induced changes in protein, RNA, and DNA levels in the ovary and fat body of adult female N. lugens. Potted rice plants were sprayed with different concentrations of imidacloprid, triazophos, and detamethrin. The results showed that all three insecticides caused a significant increase in protein and RNA contents in the ovary and fat body of adult females developed from nymphs fed on treated plants compared with those from on untreated plants, although there was no significant effect on DNA content. In general, protein and RNA contents in both ovary and fat body increased linearly with insecticide concentrations or days after emergence (DAEs) when they were applied. There was a significant correlation between protein content and RNA content in both ovary and fat body. In addition, the relationship between ratios of RNA to protein in ovary and fat body of adult female N. lugens and insecticide concentrations showed a significant positive correlation for most DAEs of imidacloprid and several DAEs of triazophos and deltamethrin treatments. These findings suggest that RNA in both ovary and fat body was more sensitive to insecticides and that the insecticide-induced changes in RNA content in turn influence protein synthesis in ovary and fat body. Consistently, RNA-to-protein ratios in ovary and fat body were approximately 0.42 in all treatments and controls.

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Insecticide-Induced Changes in Protein, RNA, and DNA Contents in Ovary and Fat Body of Female <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae)

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“…Pengendalian populasi WBC selain menggunakan insektisida sering dikaitkan dengan seleksi ketahanan dan kerentanan tanaman terhadap wereng tersebut (Yin et al, 2008). Seperti contohnya insektisida deltametrin dapat meningkatkan populasi WBC pada varietas padi rentan dibandingkan padi tahan.…”

Section: Pendahuluanunclassified

“…Menurut Raymond et al (2011), serangga yang memiliki gen resisten terhadap insektisida apabila dipaparkan pada varietas tanaman rentan, kemudian diberi perlakuan insektisida, maka tingkat keberhasilan hidup serangga tersebut menjadi lebih tinggi. WBC yang diberi pakan tanaman varietas rentan menyebabkan peningkatan populasi brakhiptera serta percepatan reproduksi (Yin et al, 2008) dan hal ini dapat dikaitkan dengan kemampuan makan yang tinggi dibandingkan varietas tanaman tahan (Cruz et al, 2011;Rahmini et al, 2012). Menurut Liu & Han (2006), kebugaran WBC pada varietas rentan lebih tinggi 5-10 kali lipat dibandingkan varietas tahan.…”

Section: Keefektifanunclassified

Pengaruh Dosis Subletal Imidakloprid Terhadap Kesintasan Populasi Wereng Coklat Pada Varietas Padi Rentan Dan Tahan

Ratna¹,

Firmansyah²,

Rahmini³

2016

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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Sublethal dose effect of imidacloprid on the survival of brown planthoppers on resistant and susceptible rice varieties.Imidacloprid insecticides and resistant rice varieties are commonly used to control the the rice brown planthopper (BPH) Nilaparvata lugens in the field. The aim of this research was to evaluate the resistance of N. lugens to imidacloprid and the influence of sublethal dose of the insecticide applied to a certain resistant rice varieties on the survival of BPH. The experiment was conducted in a greenhouse trial at Indonesian Center for Rice Research, Sukamandi, West Java. Each pair of adult BPH were infested on three rice varieties Ciherang, Inpari 13, and Pelita, and then followed by spraying five doses of imidacloprid. The the effective dose rate of imidacloprid on BPH was determined by the value of LD 95 compared with the recommended dose (20 g a.i. ha -1 ). The nymphal survival was concidered as a result of the applied sublethal doses. The numbers of nymphal progenies were observed until two peaks populations of both first and second generations. The insecticide then was applied at LD 50 dose equivalent on adult BPH of the second generation. The number of laid eggs and the abnormal egg shapes were counted. Imidacloprid doses that were unefffective against BPH showed by the values of LD 95 were 1224.3, 2799.0, dan 4692.8 g a.i. ha -1 at Ciherang, Inpari 13 dan Pelita rice varieties, respectively. Seven days after application of imidacoprid, about 70-90% of adult BPH still survived. Sublethal dosages of imidacloprid tended to increase the survival of BPH on a resistant rice variety of Inpari 13, as reflected by the number of nymphal progeny of 156-169 BPH/plant at the first population peak. Imidacloprid treatment increased the number of laid egg, but had no effect on the egg sterility.Key words: effectiveness, Nilaparvata lugens, oviposition, population survival ABSTRAK Pengaruh dosis subletal imidakloprid terhadap kesintasan populasi wereng coklat pada varietas padi rentan dan tahan. Insektisida imidakloprid dan varietas padi tahan wereng sering digunakan untuk mengendalikan populasi hama wereng batang coklat (WBC) Nilaparvata lugens di lapangan. Penelitian ini bertujuan menguji tingkat ketahanan WBC terhadap insektisida imidakloprid dan pengaruh dosis subletal terhadap sintasan populasi WBC pada varietas padi yang telah diketahui tipe ketahanannya. Penelitian dilaksanakan di rumah kaca Pusat Penelitian Padi Indonesia, Sukamandi. Sepasang imago WBC diinfestasikan pada tiga varietas padi (Ciherang, Inpari 13, dan Pelita), kemudian diberi lima dosis perlakuan imidakloprid. Keefektifan imidakloprid terhadap WBC ditentukan dari nilai LD 95 relatif terhadap dosis anjuran penggunan di lapangan 20 g b.a./ha. Nimfa yang lolos hidup dari pengujian ini dianggap sebagai perlakuan dosis subletal pada pengujian selanjutnya. Jumlah nimfa diamati hingga dua puncak populasi generasi ke-1 dan ke-2. Dosis perlakuan LD 50 diujikan kembali pada imago WBC generasi ke-2. Jumlah telur yang diletakkan dan ...

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“…Wereng cokelat yang makan tanaman padi rentan akan meningkatkan persentase keturunan brakhiptera betina dan laju reproduksinya (Yin et al 2008). Kemampuan reproduksi wereng cokelat pada padi hibrida rentan cukup tinggi, terlihat dari tingkat pertumbuhan saat padi bunting mencapai 4,80 kali (Xu et al 2013).…”

Section: Pada Varietas Inpari 13unclassified

Laju Pertumbuhan Intrinsik dan Neraca Hidup Wereng Cokelat pada Tanaman Padi Akibat Perubahan Iklim Global

Baehaki¹,

Iswanto

Munawar

2016

j. penelit. pertan. tanam. pangan

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Study on the intrinsic growth rate of natural increases of brown planthopper (BPH) was carried out in Sukamandi, Subang, West Java in 2012 ABSTRAKPenelitian laju pertumbuhan intrinsik dan neraca hidup wereng cokelat dilaksanakan di rumah kasa Balai Besar Penelitian Tanaman Padi pada tahun 2012 menggunakan dua varietas padi, yaitu Pelita I/1 dan Inpari 13. Penelitian bertujuan mengevaluasi pengaruh iklim global terhadap perkembangan wereng cokelat di Sukamandi, Subang, Jawa Barat, setelah tiga dasawarsa sejak penelitian pertama tahun 1984. Hasil penelitian menunjukkan perkembangan wereng cokelat di Sukamandi pada tahun 2012 sangat berbeda dengan tahun 1984. Laju pertumbuhan intrinsik wereng cokelat pada varietas Pelita I/1 adalah r m = 0,2285 atau 2,22 kali lipat dan pada Inpari 13 adalah r m = 0,2209 atau 2,14 kali lipat dalam tiga dasawarsa. Lama waktu satu generasi pada Pelita I/1 dan Inpari 13 lebih singkat 0,81-0,83 kali lipat. Indeks daya bertahan hidup wereng cokelat pada Pelita I/1 mencapai 5,3 kali lipat dan indeks daya bertahan hidup pada Inpari 13 mencapai 5,8 kali lipat dibanding tiga dasawarsa yang lalu. Pada varietas Pelita I/1 tahun 2012 nisbah wereng betina dan wereng jantan adalah 74%: 26%, sedangkan pada varietas Inpari 13 adalah 70,8%: 29,2%. Berdasarkan laju pertumbuhan intrinsik dan neraca hidup wereng cokelat populasi lapang di Sukamandi telah berubah selama tiga dasawarsa. Implikasi dari penelitian ini, dinamika populasi wereng cokelat telah berubah mengarah kepada perkembangan yang lebih tinggi dan dipengaruhi oleh perubahan iklim global.Kata kunci: padi, wereng cokelat, laju intrinsik, neraca hidup, perubahan iklim. PENDAHULUANWereng cokelat, Nilaparvata lugens (Stal) merupakan hama global yang merusak tanaman padi di Indonesia, China, Vietnam, Thailand, India, Pakistan, Malaysia, Filipina, Jepang, dan Korea (Baehaki dan Mejaya 2014). Wereng cokelat secara bertahap muncul dengan berbagai biotipe, mulai dari biotipe 1, 2, 3, dan terakhir biotipe 4 yang serangannya dinilai cukup ganas di Asia Tenggara dan Asia Selatan (Baehaki et al. 2011). Serangan wereng cokelat di Indonesia pada dasawarsa 1971-1980, 1981-1990, 1991-2000, 2001-2010

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Cultivar and Insecticide Applications Affect the Physiological Development of the Brown Planthopper, <I>Nilaparvata lugens</I> (Stål) (Hemiptera: Delphacidae)

Cited by 65 publications

References 20 publications

Insecticide-Induced Changes in Protein, RNA, and DNA Contents in Ovary and Fat Body of Female <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae)

Insecticide-Induced Changes in Protein, RNA, and DNA Contents in Ovary and Fat Body of Female <I>Nilaparvata lugens</I> (Hemiptera: Delphacidae)

Pengaruh Dosis Subletal Imidakloprid Terhadap Kesintasan Populasi Wereng Coklat Pada Varietas Padi Rentan Dan Tahan

Laju Pertumbuhan Intrinsik dan Neraca Hidup Wereng Cokelat pada Tanaman Padi Akibat Perubahan Iklim Global

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