Coccinellid interactions mediated by vegetation heterogeneity

Amaral, Dany Silvio Souza Leite; Venzon, Madelaine; Perez, André Lage; Schmidt, Jason M.; Harwood, James D.

doi:10.1111/eea.12319

Cited by 8 publications

(3 citation statements)

References 67 publications

(87 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A high level of heterogeneity is thought to provide more and alternative food resources, refuges, and shelter used for predators when hiding or nesting (Bereczki, Ódor, Csóka, Mag, & Báldi, ; Letourneau, Bothwell Allen, Kula, Sharkey, & Stireman, ). In addition, higher heterogeneity could favor the coexistence of multiple enemies (Amaral, Venzon, Perez, Schmidt, & Harwood, ; Finke & Denno, ), thus increasing top‐down mortality of herbivores.…”

Section: Introductionmentioning

confidence: 99%

Habitat heterogeneity affects predation of European pine sawfly cocoons

Bellone

Klapwijk

Björkman

2017

Ecology and Evolution

View full text Add to dashboard Cite

Habitat heterogeneity is thought to affect top‐down control of herbivorous insects and contribute to population stability by providing a more attractive microhabitat for natural enemies, potentially leading to reduced population fluctuations. Identifying the parameters that contribute to habitat heterogeneity promoting top‐down control of herbivorous insects by natural enemies could facilitate appropriate management decisions, resulting in a decreased risk of pest insect outbreaks because of a higher level of predation. In our study, we measured the top‐down pressure exerted by small mammals on the cocoons of a notorious pest insect in pine forests, the European pine sawfly (Neodiprion sertifer), which is known to be regulated by small mammal predation. The forest stands used differed in heterogeneity measured in terms of differences in tree diversity and density, understory vegetation height, presence/absence, and density of dead wood. We found higher predation in more dense spots within forest stands. Further, the effect of dead wood on sawfly cocoon predation depended on the pine proportion in forest stands. The addition of dead wood in a manipulation experiment had a slight positive effect on cocoon predation, while dead wood removal caused a clear decrease in predation rate, and the decrease was more pronounced when the proportion of pine increased. Our results show that habitat heterogeneity affects predation by generalist predators on herbivorous insects. This knowledge could be applied to reduce the risk of insect outbreaks by applying management methods that increase heterogeneity in perennial systems such as forests and orchards, thus decreasing the levels of insect damage.

show abstract

Section: Introductionmentioning

confidence: 99%

Habitat heterogeneity affects predation of European pine sawfly cocoons

Bellone

Klapwijk

Björkman

2017

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…Nuestros resultados indicaron la importancia de las plantas no cultivadas P. hysterophorus y Z. mays, como fuente de polen y de los áfidos presa U. nigrotibium y R. maidis para el depredador H. convergens. Muchos estudios han reportado la importancia de la vegetación no cultivada como fuente de alimento y refugio de enemigos naturales (Amaral et al, 2015;Bischoff et al, 2016;Smith et al, 2015).…”

Section: Discussionunclassified

Depredación, reproducción y desarrollo de la catarina Hippodamia convergens (Coleoptera: Coccinellidae)

Naranjo-Acosta¹,

Díaz-Mesa²,

Melo-Cerón³

et al. 2022

Rev. Biol. Trop.

View full text Add to dashboard Cite

Introducción: Mantener poblaciones de insectos depredadores en el agroecosistema ofreciéndoles presas y recursos alimenticios provenientes de las plantas es importante para mejorar el control biológico y contribuir con la conservación. Objetivo: Determinar si el consumo de presas y recursos alimenticios florales potencia los atributos biológicos del depredado Hippodamia convergens. Métodos: Las larvas de Hippodamia convergens fueron alimentadas con dos especies de áfidos, mientras que los adultos fueron alimentados con áfidos, espigas de maíz y dos especies de plantas no cultivadas. La presencia de azúcar en el intestino del depredador se comprobó mediante la prueba de antronas frías, y la presencia de polen mediante el método de acetólisis. Los experimentos demográficos se realizaron durante los primeros 40 días después de la emergencia de la hembra bajo condiciones controladas (25 °C ± 0.5; 75 % ± 1.75 HR; L12:D12). Resultados: H. convergens no consumió fructosa de Sorghum halepense, Parthenium hysterophorus o Zea mays, sino únicamente polen. En condiciones controladas (25 °C ± 0.5, 75 % ± 1.75 HR), el tiempo de desarrollo (huevo-adulto) del depredador fue más corto (21.36 días) cuando consumió Rhopalosiphum maidis en lugar de Uroleucon nigrotibium (24.6 días), mientras que la supervivencia (L1- adulto) y la proporción sexual no cambió. La fecundidad promedio fue mayor (55.5 huevos / 40 días) al consumir U. nigrotibium con polen de P. hysterophorus, que solo U. nigrotibium (22.5 huevos / 40 días), o R. maidis con polen de Zea mays (11 huevos / 40 días). La tasa intrínseca de crecimiento natural fue mayor al consumir U. nigrotibium con polen de P. hysterophorus (0.055), que U. nigrotibium (0.034) o R. maidis con polen de Z. mays (0.019). La tasa de depredación (L1-L5) fue mayor al consumir R. maidis (0.65) que U. nigrotibium (0.51). Conclusiones: Las especies de áfidos y su combinación con polen de plantas no cultivadas afectan de manera diferente el tiempo de desarrollo, reproducción y tasa de depredación de H. convergens.

show abstract

“…In Michigan (USA) coccinellid species richness was higher when the habitat was more complex and contained a range of vegetation structures from deciduous trees to grassland and crops (Colunga-Garcia et al, 1997). When non-crop vegetation was added to an agricultural habitat, coccinellid abundance increased (Woltz and Landis, 2014) and intraguild predation between a native coccinellid and H. axyridis decreased (Amaral et al, 2015). Additionally, trees and grassland tend to have a more diverse coccinellid community than crops (Honeǩ, 2012).…”

Section: Introductionmentioning

confidence: 99%

Ladybird communities in rural woodlands: Does an invader dominate?

Farrow

Roy²,

Brown³

2022

Front. Conserv. Sci.

View full text Add to dashboard Cite

The invasive alien species Harmonia axyridis (Coleoptera: Coccinellidae) was first observed in the UK in 2004. Previous studies have demonstrated the adverse effects on other species of H. axyridis during its early stages of establishment. However, habitat factors are important in determining distribution and population trends of ladybirds. Whilst the abundance of H. axyridis is well known in the UK within urban and other managed habitats, much less is known about its abundance in the wider countryside. Here we present the results of surveys from rural woodland habitats to assess whether or not H. axyridis dominates coccinellid communities in these rural habitats. Additionally, we explored the relationship between coccinellid and aphid abundance within these habitats. All field sites were in Cambridgeshire or Suffolk, East Anglia, UK and were surveyed between May and October 2016 and 2017. Three deciduous sites and three coniferous sites were included in the study. Surveys were conducted using a standardised approach involving sweep-netting within grass margins and tree beating to sample ladybirds from trees. Three distinct vegetation structures or layers were surveyed within both the coniferous and deciduous sites; tree, shrub and herb layer. All captured coccinellids were identified to species-level. Seventeen species of coccinellid and over 1300 individuals were recorded during the study period from two distinct site types (deciduous, coniferous). Species richness was lower at deciduous sites (n = 12) in comparison to coniferous (n = 16) sites. The coccinellid community also did not appear to be dominated by H. axyridis at rural sites, in contrast to urban areas. Deciduous woodland appeared to be a lesser preferred habitat of H. axyridis than coniferous woodland. Additionally, there was a distinct difference in the coccinellid community in relation to vegetation structure (across the tree, shrub and herb layers) between coniferous and deciduous sites. Our results indicate that there appear to be distinct native coccinellid communities at deciduous and coniferous sites. We discuss the way in which rural woodlands could act as a refuge for some native coccinellids.

show abstract

Coccinellid interactions mediated by vegetation heterogeneity

Cited by 8 publications

References 67 publications

Habitat heterogeneity affects predation of European pine sawfly cocoons

Habitat heterogeneity affects predation of European pine sawfly cocoons

Depredación, reproducción y desarrollo de la catarina Hippodamia convergens (Coleoptera: Coccinellidae)

Ladybird communities in rural woodlands: Does an invader dominate?

Contact Info

Product

Resources

About