Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

Cabral, Susana; Soares, António O.; Garcia, Patrícia

doi:10.1007/s10340-011-0373-2

Cited by 44 publications

(33 citation statements)

References 67 publications

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“…Sublethal effects of insecticides could affect population dynamics (Stark and Banks 2003) through impairment to behavioral and physiological traits (Kerns and Stewart 2000;Desneux et al 2006a;Arnó and Gabarra 2011;Cabral et al 2011;Shahout et al 2011;Stara et al 2011;Han et al 2012). Studies have demonstrated that exposure to lethal or sublethal doses/concentrations of pesticides could reduce insect longevity and fecundity (Desneux et al 2006b;Zeng et al 2006;Wang et al 2008;Bao et al 2009;Biondi et al 2012;Zappalà et al 2012) and disturb key behavioral traits (Desneux et al 2004a, b;Ramirez-Romero et al 2008;Cordeiro et al 2010).…”

Section: Introductionmentioning

confidence: 95%

Assessment of physiological sublethal effects of imidacloprid on the mirid bug Apolygus lucorum (Meyer-Dür)

et al. 2012

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Apolygus lucorum (Meyer-Dür) (Hemiptera: Miridae) is currently one of major mirid pests in the Yangtze River and the Yellow River regions in China. Imidacloprid (neonicotinoid) is widely used against pierce-sucking pest insects, including against A. lucorum. In addition to its direct lethal effect, multiple negative sublethal effects may also occur in exposed insects. We assessed potential sublethal effects of imidacloprid on some biological characteristics of A. lucorum with the aim of increasing rational use of imidacloprid against that cotton pest. The lethal toxicity of imidacloprid on adults of A. lucorum was determined in laboratory conditions by a topical application bioassay (LD(50) = 6.70 ng a.i. [active ingredient]/A. lucorum adult). We also estimated a sublethal dose, LD(5) (0.38 ng a.i./adult), a low lethal dose, LD(25) (1.96 ng a.i./adult), and moderate lethal dose, LD(40) (3.97 ng a.i./adult). The sublethal dose of imidacloprid (LD(5)) shortened the pre-oviposition period of females but increased the time required for eggs to develop (i.e. longer embryogenesis). The low lethal dose (LD(25)) also reduced the pre-oviposition period. Females exposed to the LD(40) laid eggs that developed faster but overall percentage of eggs hatching was reduced. LD(25) and LD(40) reduced longevity of males but not of females. In addition, the susceptibility to seven insecticides generally used on Chinese crops was not modified in A. lucorum previously exposed to the LD(25) of imidacloprid. Our results demonstrate sublethal effects of low doses of imidacloprid on A. lucorum (notably on pre-oviposition period and egg development) which may have an impact on population dynamics of this pest.

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Section: Introductionmentioning

confidence: 95%

Assessment of physiological sublethal effects of imidacloprid on the mirid bug Apolygus lucorum (Meyer-Dür)

et al. 2012

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“…Acute toxicity (lethal effect) and selectivity of pesticides has been examined in predators (Zhu et al 1998;Qiu et al 2000), including in predatory coccinellid beetles (Hao et al 1990;Zhu et al 1998;Wu et al 2007;Urbaneja et al 2008;Xi 2008;Cabral et al 2011). However, in addition to their lethal effect, pesticides also can induce various sublethal effects.…”

Section: Introductionmentioning

confidence: 96%

“…We studied the lethal toxicity of imidacloprid to S. japonicum through various exposure routes that aimed at representing various exposure scenarios (and because exposure methods could have an impact on results, Stark et al 1995;Desneux et al 2006a). We also studied the effects of imidacloprid on functional response of S. japonicum to B. tabaci eggs and on predator voracity as sublethal effects on these key predator traits (O'Neil 1997;Cabral et al 2011;Madadi et al 2011) could greatly reduce predator impact on B. tabaci. This study constitutes the basis for future guidelines for imidacloprid rational use, and it can help optimizing IPM programs involving use of both natural enemies and imidacloprid against B. tabaci in China.…”

Section: Introductionmentioning

confidence: 99%

Lethal effect of imidacloprid on the coccinellid predator Serangium japonicum and sublethal effects on predator voracity and on functional response to the whitefly Bemisia tabaci

et al. 2012

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Neonicotinoid insecticides are widely used for controlling sucking pests, and sublethal effects can be expected in beneficial arthropods like natural enemies. Serangium japonicum is an important predator in many agricultural systems in China, and a potential biological control agent against Bemisia tabaci. We evaluated the toxicity of imidacloprid to S. japonicum and its impact on the functional response to B. tabaci eggs. S. japonicum adults exposed through contact to dried residues of imidacloprid at the recommended field rate on cotton against B. tabaci (4 g active ingredient per 100 l, i.e. 40 ppm [part per million]), and reduced rates (25, 20, 15 and 10 ppm) for 24 h showed high mortality rates. The mortality induced by a lowest rate, 5 ppm, was not significantly different than the control group and thus it was considered as a sublethal rate. The lethal rate 50 and hazard quotient (HQ) were estimated to be 11.54 ppm and 3.47 respectively, indicating a risk for S. japonicum in treated fields (HQ > 2). When exposed to dried residues of imidacloprid at the sublethal rate (5 ppm) on cotton leaves, functional response of S. japonicum to B. tabaci eggs was affected with an increase in handling time and a reduction in peak consumption of eggs. Imidacloprid residues also disturbed predator voracity, the number of B. tabaci eggs consumed on treated leaves being significantly lower than on untreated leaves. All effects disappeared within a few hours after transfer to untreated cotton leaves. Imidacloprid systemically applied at the recommended field rate (for cotton) showed no toxicity to S. japonicum, nor affected the functional response of the predator. Sublethal effects of imidacloprid on S. japonicum observed in our study likely negatively affect S. japonicum development and reproductive capacity and may ultimately reduce predator population growth. These results hint at the importance of assessing potential effects of imidacloprid on S. japonicum for developing effective integrated pest management programs of B. tabaci in China.

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“…Physiologically, pymetrozine appears to act by preventing plant-sucking insects from inserting their stylus into the plant tissue (Ausborn et al 2005). Pymetrozine was classified as slightly harmful to the common green lacewing Chrysoperla carnea Stephens (Neuroptera: Chrysopidae) (Rezaei et al 2007) and the predatory bug Orius insidiosus (Hemiptera: Anthocoridae) (Moscardini et al 2013), and had no adverse effects on the predators Coccinella undecimpunctata (Coleoptera: Coccinellidae) (Cabral et al 2008(Cabral et al , 2011.…”

Section: Discussionmentioning

confidence: 98%

Sublethal effects of four synthetic insecticides on the generalist predator Cyrtorhinus lividipennis

Xiao

et al. 2014

J Pest Sci

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Cyrtorhinus lividipennis Reuter, an important predator of rice planthopper and leafhoppers, plays a significant role in the integrated pest management (IPM) of rice pest. However, chemical control remains a major strategy against rice pests. Insecticide risk assessment should include sublethal effects on non-target organisms before being included in IPM schemes. We examined the sublethal effects of four insecticides, triazophos, deltamethrin, chlorantraniliprole, and pymetrozine on C. lividipennis. The results demonstrated that sublethal concentrations of deltamethrin (LC 20 and LC 10 ) disrupted the orientation behavior of C. lividipennis, but sublethal concentrations of triazophos (LC 20 and LC 10 ), chlorantraniliprole, and pymetrozine (the recommended field rate and half field rate) had no impact on the behavioral response of surviving predators. The mean consumption of C. lividipennis treated with sublethal concentrations of triazophos decreased approximately 18-35 % compared to that of untreated ones. Sublethal concentrations of deltamethrin also reduced the mean consumption of C. lividipennis, but sublethal concentrations of chlorantraniliprole and pymetrozine exhibited no influence on the predatory capability of the predator. Significant reductions in pepsin activity were observed in triazophos and deltamethrin treatments but not in chlorantraniliprole and pymetrozine treatments. Our results indicated that triazophos and deltamethrin exerted sublethal effects, such as disturbed foraging ability, reduced predatory capacity, and decreased pepsin activity on C. lividipennis, and chlorantraniliprole and pymetrozine were regarded as safer to this predator.

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Voracity of Coccinella undecimpunctata: effects of insecticides when foraging in a prey/plant system

Cited by 44 publications

References 67 publications

Assessment of physiological sublethal effects of imidacloprid on the mirid bug Apolygus lucorum (Meyer-Dür)

Assessment of physiological sublethal effects of imidacloprid on the mirid bug Apolygus lucorum (Meyer-Dür)

Lethal effect of imidacloprid on the coccinellid predator Serangium japonicum and sublethal effects on predator voracity and on functional response to the whitefly Bemisia tabaci

Sublethal effects of four synthetic insecticides on the generalist predator Cyrtorhinus lividipennis

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