Primer registro de chinches (Hemiptera: Coreidae y Pentatomidae) atacando frutos de nogal pecanero en Brasil

Boscardin, Jardel; Costa, Ervandil Corrêa; Pedron, Leandra; Machado, Dayanna do Nascimento; Silva, Jéssica Maus da

doi:10.25100/socolen.v42i1.6663

Cited by 7 publications

(3 citation statements)

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“…These species are considered pests of soybeans (GALLO et al, 2002). Loxa deducta (Walker) has already been found attacking pecan nuts in Rio Grande do Sul, Brazil (BOSCARDIN et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Arthropods associated with young orchard of pecan in southern Brazil

et al. 2020

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RESUMO: A produção mundial de noz-pecã Carya illinoinensis (Juglandaceae) é liderada pelos Estados Unidos. No Brasil, em especial no Rio Grande do Sul, houve uma expansão da área plantada com a cultura nos últimos anos. No entanto, faltam pesquisas relacionadas à entomofauna associada à noz-pecã, bem como práticas culturais que auxiliem no Manejo Integrado de Pragas, mesmo havendo uma expansão da cultura. Assim, o presente estudo objetivou avaliar a fauna de artrópodes na copa de plantas de C. illinoinensis, submetido a diferentes manejos de solo, em Santa Maria, Rio Grande do Sul, Brasil. Para tanto, utilizou-se delineamento experimental de blocos ao acaso, com cinco blocos e quatro tratamentos: plantio em cova pequena, com 20 × 60 cm (Sp); utilização de subsolador mais grade niveladora e cova pequena (Ssp); utilização de enxada rotativa e cova pequena (Tsp); e plantio em cova grande, com 40 × 60 cm (Lp). De novembro de 2014 a maio de 2015, foram coletadas 7.617 espécimes nas copas de árvores jovens de nogueira-pecã. Foram identificados 150 grupos taxonômicos, sendo Coleoptera a ordem com maior riqueza de espécies. Monellia caryella (Hemiptera: Aphididae) apresentou elevada densidade. Foram registrados os inimigos naturais himenópteros parasitoides e Coccinellidae. Conclui-se que a artropodofauna em copas de plantas jovens de nogueira-pecã apresenta diversidade similar entre os tratamentos e predomínio de M. caryella nas áreas avaliadas.

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“…These species are considered pests of soybeans (GALLO et al, 2002). Loxa deducta (Walker) has already been found attacking pecan nuts in Rio Grande do Sul, Brazil (BOSCARDIN et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Arthropods associated with young orchard of pecan in southern Brazil

et al. 2020

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“…It is possible that insect herbivores might feed more easily on pecans earlier in the season, before the shells harden, but even then, there is still a substantial barrier protecting the nut in the form of the husk [21]. Despite these defences, pecans are readily consumed by multiple Leptoglossus species in parts of the United States [17], Mexico [22,23] and Brazil [24]. Furthermore, both juvenile and adult L. zonatus have been observed feeding on pecan nuts in the field [23].…”

Section: Introductionmentioning

confidence: 99%

Adult presence does not ameliorate juvenile feeding challenges in a leaf-footed bug

Zlotnik,

Miller

2023

R. Soc. open sci.

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Herbivores often grapple with structural defences in their host plants, which may pose especially difficult challenges for juveniles due to their underdeveloped feeding morphology. The degree to which juvenile herbivore survival is limited by structural defences as well as the strategies used to overcome them are not well understood. We hypothesized that juveniles benefit from feeding near adults because adults pierce through physical barriers while feeding, enabling juveniles to access nutrients that they otherwise could not. We tested this feeding facilitation hypothesis in the leaf-footed bug Leptoglossus zonatus (Hemiptera: Coreidae). Bugs were raised with an adult or a juvenile conspecific and fed a diet of pecans with or without shells. As predicted, we found that juveniles suffered greater mortality when fed nuts with shells than when fed nuts without shells. Contrary to our expectations, the presence of an adult feeding on the same nut did not lessen this effect. Therefore, the presence of an adult does not ameliorate the feeding difficulties faced by juvenile L. zonatus, despite evidence for feeding facilitation in related insect species. This study adds to our understanding of how host plant defences can limit the survival of even highly generalist herbivores.

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“…The pest species Monellia caryella (Fitch, 1855) (blackmargined aphid), Phylloxera devastatrix Pergande, 1904 andPhylloxera notabilis Pergande, 1903 (phylloxera), are highlighted as being of major importance due to their occurrence in Brazil (Rio Grande do Sul) and the United States, causing damage to leaves (Boscardin & Costa, 2018). It should be noted that the phytophagous insect species Leptoglossus stigma (Herbst, 1784), Leptoglossus zonatus (Dallas, 1852) (Hemiptera: Coreidae) and Loxa deducta (Walker, 1867) damage the fruit, implicating in low orchard productivity (Boscardin et al, 2016). Besides these species, coleopteran species (Coleoptera: Curculionidae, Scolytinae) are noteworthy, since these beetles, known as bark beetles and ambrosia beetle, are considered the most harmful in native and planted forests (Raffa et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Scolytinae species damaging Carya illinoinensis trees in southern Brazil

et al. 2020

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This study aims to report two species of Scolytinae that have been damaging Carya illinoinensis trees in southern Brazil. In two Brazilian municipalities, Guarapuava in Paraná State and Pantano Grande in the Rio Grande do Sul State, insects of the Scolytinae family were found damaging pecan trees. Infested tree samples were kept in the laboratory in glass tubes sealed with a voile tissue until the emergence of adults. After the adults' emergence, the specimens were identified by their morphological characteristics and sent to a taxonomist specialized in Scolytinae family for identification. The species Xyleborus retusus was identified causing damages to pecan trees from Guarapuava while the species Xyleborus ferrugineus was identified in pecan trees from Pantano Grande. Trees injured by these insects displayed similar symptoms in both study areas. In Guarapuava and Pantano Grande, 13 and 10 trees, respectively, died due to stem lesions caused by Xyleborus spp. Thus, this study reports for Brazilian pecan growers the occurrence of Scolytinae species X. retusus and X. ferrugineus damaging C. illinoinensis plants in southern Brazil. It also emphasizes the importance of constant crop monitoring to minimize the risk of pest damage.

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Primer registro de chinches (Hemiptera: Coreidae y Pentatomidae) atacando frutos de nogal pecanero en Brasil

Cited by 7 publications

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Arthropods associated with young orchard of pecan in southern Brazil

Arthropods associated with young orchard of pecan in southern Brazil

Adult presence does not ameliorate juvenile feeding challenges in a leaf-footed bug

Scolytinae species damaging Carya illinoinensis trees in southern Brazil

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