Neonicotinoid‐induced resurgence of rice leaffolder, <i>Cnaphalocrocis medinalis</i> (Guénee)

Chintalapati, Padmavathi; Katti, Gururaj; Puskur, Raghuveer R.; Venkata, Krishnaiah Nagella

doi:10.1002/ps.3983

Cited by 17 publications

(11 citation statements)

References 19 publications

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“…; Chintalapati et al. ). Insecticides may also increase pest densities by eliminating natural enemies (Kenmore et al.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have reported similar increases in pest damage after insecticide applications to rice. This can be the result of physiological responses to pesticides that induce greater feeding and increased reproductive output (Singh et al 1995;Azzam et al 2009;Suri and Singh 2011;Horgan et al 2014;Chintalapati et al 2016). Insecticides may also increase pest densities by eliminating natural enemies (Kenmore et al 1984;Cohen et al 1994).…”

Section: The Effects Of Insecticide Treatmentsmentioning

confidence: 99%

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Effects of bund crops and insecticide treatments on arthropod diversity and herbivore regulation in tropical rice fields

Horgan

Ramal

Villegas

et al. 2017

J Applied Entomology

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Ecological engineering using vegetable or flower strips is promoted as a potential pest management strategy in irrigated rice. Farmers in the Philippines often plant rice levees (bunds) with vegetables, particularly string beans (Vigna unguiculata [L.] Walpers) to supplement income, but without considering the potential for pest management. This study examines the effects of planted bunds on rice herbivores and their natural enemies. We compared arthropods in (a) rice fields that had string beans planted on bunds, (b) fields without string beans and without any insecticide applications and (c) fields without string beans but with insecticide treatments (standard practice). Rice yield was similar across all treatments; however, the vegetation strips produced an extra 3.6 kg of fresh string bean pods per metre of bund. There were no apparent increases in major natural enemy groups in fields with string beans compared to fields with conventional bunds. Fields with insecticide treatments had higher damage from leaffolders (Lepidoptera: Pyralidae). The sprayed fields also had lower parasitism of planthopper eggs and fewer predatory dragonflies and damselflies (Odonata). Furthermore, the mortality of planthopper (Delphacidae: Hemiptera) and stemborer (Pyralidae) eggs by parasitoids and predators was density dependent only in the unsprayed fields (with and without string beans). Our results demonstrate that planting string beans on rice bunds improves the productivity of rice farms, but our ecological engineering system did not appreciably affect natural enemy or herbivore abundance; however, chemical insecticides adversely affected pest regulatory ecosystem functions leading to higher pest damage.

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“…; Chintalapati et al. ). Insecticides may also increase pest densities by eliminating natural enemies (Kenmore et al.…”

Section: Discussionmentioning

confidence: 99%

Section: The Effects Of Insecticide Treatmentsmentioning

confidence: 99%

Effects of bund crops and insecticide treatments on arthropod diversity and herbivore regulation in tropical rice fields

Horgan

Ramal

Villegas

et al. 2017

J Applied Entomology

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“…For example, where leaffolder (Cnaphalocrocis medinalis) incidence occurs along with planthoppers (Nilaparvata lugens) in rice fields of India, the use of neonicotinoids has resulted in increases of the leaffolder population. Stimulated fecundity of the leaffolder bugs on neonicotinoid-sprayed plants, coupled with reduced larval duration and low egg toxicity, were the major factors contributing to the upsurge of leaffolders (Chintalapati et al 2016).…”

Section: Impacts On Natural Systems For Pest and Weed Controlmentioning

confidence: 99%

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

Pisa

Goulson

Yang

et al. 2017

Environ Sci Pollut Res

188

144

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New information on the lethal and sublethal effects of neonicotinoids and fipronil on organisms is presented in this review, complementing the previous Worldwide Integrated Assessment (WIA) in 2015. The high toxicity of these systemic insecticides to invertebrates has been confirmed and expanded to include more species and compounds. Most of the recent research has focused on bees and the sublethal and ecological impacts these insecticides have on pollinators. Toxic effects on other invertebrate taxa also covered predatory and parasitoid natural enemies and aquatic arthropods. Little new information has been gathered on soil organisms. The impact on marine and coastal ecosystems is still largely uncharted. The chronic lethality of neonicotinoids to insects and crustaceans, and the strengthened evidence that these chemicals also impair the immune system and reproduction, highlights the dangers of this particular insecticidal class (neonicotinoids and fipronil), with the potential to greatly decrease populations of arthropods in both terrestrial and aquatic environments. Sublethal effects on fish, reptiles, frogs, birds, and mammals are also reported, showing a better understanding of the mechanisms of toxicity of these insecticides in vertebrates and their deleterious impacts on growth, reproduction, and neurobehaviour of most of the species tested. This review concludes with a summary of impacts on the ecosystem services and functioning, particularly on pollination, soil biota, and aquatic invertebrate communities, thus reinforcing the previous WIA conclusions .

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“…Several recent surveys of rice farmers in Asia also indicate a high level of pesticide use and little recourse to alternative pest control methods (Rejesus et al, 2012;Qiao et al, 2012;Abdollahzadeh et al, 2015). Paradoxically, the trend towards an increasing availability of chemical pesticides has not resulted in the expected lower pest and weed incidences, but to area-wide problems of resistant weeds (Powles and Shaner, 2001), sustained outbreaks of planthoppers and leaf folders (Crambidae) (Sprangenberg et al, 2015;Chintalapati et al, 2016), unstable management of snails (Horgan et al, 2014b) and worrisome consequences for environmental and human health (Pingali and Roger, 1995;Qiao et al, 2012), often without clear yield responses to chemical inputs (Pingali and Gerpacio, 1997;Sprangenberg et al, 2015).…”

Section: Increased Availability and Marketing Of Agrochemicalsmentioning

confidence: 99%

“…In addition, several insecticides are associated with faster growth rates and increased reproduction in pest insects (Fig. 4) (Wang et al, 2005;Azzam et al, 2009;Chintalapati et al, 2016). To further add to the problem, the efficiency of natural enemies such as spiders and predatory wasps is reduced by insecticides either because they are directly killed by the chemicals or because their behaviours are altered (Kenmore et al, 1984;Tanaka et al, 2000;Horgan et al, 2017a).…”

Section: Insecticidesmentioning

confidence: 99%

Integrated pest management for sustainable rice cultivation: a holistic approach

Horgan¹

2017

Burleigh Dodds Series in Agricultural Science

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Neonicotinoid‐induced resurgence of rice leaffolder, Cnaphalocrocis medinalis (Guénee)

Cited by 17 publications

References 19 publications

Effects of bund crops and insecticide treatments on arthropod diversity and herbivore regulation in tropical rice fields

Effects of bund crops and insecticide treatments on arthropod diversity and herbivore regulation in tropical rice fields

An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems

Integrated pest management for sustainable rice cultivation: a holistic approach

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