Population genetics of Chrysoperla externa (Neuroptera: Chrysopidae) and implications for biological control

Lavagnini, Taís Carmona; Morales, Adriana; Freitas, Sérgio de

doi:10.1590/1519-6984.02014

Cited by 13 publications

(3 citation statements)

References 22 publications

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“…The green lacewing Chrysoperla carnea (Stephen) (Neuroptera: Chrysopidae) stand out as important predator, especially of the sucking complex of cotton [4]. The larvae of C. carnea are generalist predator which can also feed on eggs and small larvae of lepidoptera, scales, aphids, psilids and whiteflies [5]. It is worth mentioning that the use of chrysopids in IPM as increased since last few years, Used Against Sucking Complex of Cotton mainly due to its adaptability, voracity and relative wide tolerance to several insecticides [6,7].…”

Section: Introductionmentioning

confidence: 99%

Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Sohail¹,

Nasar²,

Raza³

et al. 2019

IJEE

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The reported high loss mortality rate of green lacewing, (Chrysoperla carnea) have been attributed to diverse factors including unattended use of insecticides. Since chemical control is one of a significant practice to manage insect pest in cotton. However, this kind of practice may impair the natural control provided by generalist predator C. carnea. Although, natural control adoption is limited in crops, area and season due to wide-spread use of insecticides but presence of resistance potential in C. carnea may improve the design of solid IPM strategies. Herein, we aimed to assess the toxicity of four insecticides to two strains of C. carnea (viz. laboratory reared and field collected adults) and to evaluate their resistance potential by calculating their resistance ratio. LC 50 was calculated at 24 h following topical application administered when the adults were 3 days old. Control adult mortalities were less than 10% at 24 h. The LC 50 values (µl mL -1 ) for laboratory reared strains of each tested insecticide were: acetamiprid, 0.0064; bifenthrin, 3.75; chlorpyrifos, 0.067; and profenofos, 0.052. The LC 50 values for field collected strains were 0.096 (acetamiprid), 34.8 (bifenthrin), 0.21 (chlorpyrifos) and 0.44 (profenofos). The toxicity of the test insecticide to C. carnea from more to least toxic was acetamiprid > profenofos > chlorpyrifos > bifenthrin. Field collected strain possessed 15 (acetamiprid)-, 9.28 (bifenthrin)-, 3.13 (chlorpyrifos)-, and 8.5 (profenofos)-fold more resistance than the susceptible population. These results are pretty worthwhile for integration of C. carnea in IPM programs, impairing with insecticides.

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Section: Introductionmentioning

confidence: 99%

Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Sohail¹,

Nasar²,

Raza³

et al. 2019

IJEE

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“…A further 12 populations and 114 specimens were studied in SP, revealing high genetic diversity and lack of geographic structure, suggesting that C . externa is a single population, regardless of sampling location [6]. The most comprehensive study of C .…”

Section: Introductionmentioning

confidence: 99%

Recent evolutionary history of Chrysoperla externa (Hagen 1861) (Neuroptera: Chrysopidae) in Brazil

Morales

Barbosa²

2017

PLoS ONE

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This work aimed to elucidate the distribution of Chrysoperla externa haplotypes and investigate whether it exhibits structure based on genetic composition as opposed to geographic location. The genetic diversity of C. externa, analyzed by AMOVA using the COI and 16S rRNA genes as mitochondrial markers, showed significant haplotype structure arising from genetic differences that was not associated with sampling location. This was reflected in the network grouping. Bayesian inference showed that haplotype distribution may have its origins in C. externa divergence into two distinct clades, which dispersed to various locations, and their subsequent diversification. The evolutionary history of C. externa may include multiple ancestral haplotypes differentiating within the same geographic area to generate the current broad genetic diversity, so that the earlier geographical history has been erased, and now we have highlighted its more recent genetic history.

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“…de T. arnobia não indica expansão populacional por efeito fundador uma vez que a rede de haplótipos não apresenta conformação "star-like" (onde existe um haplótipo central frequente com vários haplótipos menos frequentes partindo desse) e os testes de neutralidade não foram significativos. Assim, se sugere que as populações de T. arnobia passaram por efeitos de gargalho genético ou seleção recenteBUBAC & SPELLMAN, 2016;LAVAGNINI et al, 2015;MELOSIK et al, 2019). homogeneizar, entre as populações, os alelos fixados pela deriva genética ou a pela seleção natural promovida pelas condições bióticas e abióticas de cada região; as populações de T. arnobia que colonizam os cultivos de eucalipto já estavam.…”

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Filogeografia molecular de >i<Thyrinteina arnobia>/i< (Lepidoptera: Geometridae) e >i<Gonipterus>/i< spp. (Coleoptera: Curculionidae) no Brasil

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Molecular phylogeography of Thyrinteina arnobia (Lepidoptera: Geometridae) and Gonipterus spp. (Coleoptera: Curculionidae) in BrazilThe introduction of eucalyptus (Eucalyptus spp.) in the Brazilian territory and its territorial expansion enhanced the development of native Myrtaceae pests and created conditions of establishment for exotic pests introduced by man, as are the cases of the native pest Thyrinteina arnobia and the cryptic and exotic species Gonipterus platensis and G. pulverulentus, respectively. Today, these species are important defoliating pests of eucalyptus in Brazil. The relationship between eucalyptus and these pest species has persisted for several decades, leading us to ask about the current genetic and demographic structuring of these species in Brazil. Therefore, this work's objectives were: (i) to study the diversity, genetic structure, and demography of T. arnobia and Gonipterus spp. in Brazil. In addition (ii) to realize the molecular identifications of Gonipterus spp. and build species-specific molecular markers for quick and accurate identification of two Gonipterus species present in Brazil. For this, a fragment of the mitochondrial DNA was sequenced, specifically a fragment of the cytochrome oxidase gene and subunit I (COI), from the collected specimens. The results of diversity and genetic structure showed that T. arnobia and G. platensis populations have moderate genetic diversity and high structure by geographic region, mainly in T. arnobia, where populations in the Northeast of Brazil have high rates of molecular variance to the populations of the Center-South Region. The species G. pulverulentus did not present genetic diversity and was not included in the population analyses. T. arnobia and G. platensis are not demographic expanding/retracting. Still, they are in spatial expansion in Brazil. The specific marker developed for identifying G. platensis and G. pulverulentus was based on the use of species-specific primers and successfully allowed the identification of these cryptic species through a multiplex PCR and subsequent visualization of the results on an agarose gel. The current distribution of G. pulverulentus is restricted to the South of the country, while G. platensis is widely distributed in the Brazilian regions.

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Population genetics of Chrysoperla externa (Neuroptera: Chrysopidae) and implications for biological control

Cited by 13 publications

References 22 publications

Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Recent evolutionary history of Chrysoperla externa (Hagen 1861) (Neuroptera: Chrysopidae) in Brazil

Filogeografia molecular de >i<Thyrinteina arnobia>/i< (Lepidoptera: Geometridae) e >i<Gonipterus>/i< spp. (Coleoptera: Curculionidae) no Brasil

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Population genetics of Chrysoperla externa (Neuroptera: Chrysopidae) and implications for biological control

Cited by 13 publications

References 22 publications

Resistance Potential of &lt;i&gt;Chrysoperla carnea&lt;/i&gt; (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Resistance Potential of &lt;i&gt;Chrysoperla carnea&lt;/i&gt; (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Recent evolutionary history of Chrysoperla externa (Hagen 1861) (Neuroptera: Chrysopidae) in Brazil

Filogeografia molecular de >i<Thyrinteina arnobia>/i< (Lepidoptera: Geometridae) e >i<Gonipterus>/i< spp. (Coleoptera: Curculionidae) no Brasil

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Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton

Resistance Potential of <i>Chrysoperla carnea</i> (Stephens) to Insecticides Used Against Sucking Complex of Cotton