Estimating the effect of plant‐provided food supplements on pest consumption by omnivorous predators: lessons from two coccinellid beetles

Schuldiner-Harpaz, Tarryn; Coll, Moshe

doi:10.1002/ps.4410

Cited by 15 publications

(8 citation statements)

References 31 publications

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“…The higher number of coccinellids in traps in NFS than in avocado orchards could be due to the provision of nectar, pollen, prey resources, or a combination of these, particularly in summer and autumn, given that these are alternative or complementary resources commonly consumed by coccinellids (Lundgren, 2009a, b;Hodek & Evans, 2012). Pollen has been described as one of the most nutritious alternative food for coccinellids (Lundgren, 2009a, b), and for H. variegata, one of the most common species found in our samplings, pollen has been described as an important resource for larval development (Schuldiner-Harpaz & Coll, 2017). Thus, flower strips with complementary flowering times could represent a more constant food resource year-round.…”

Section: Discussionmentioning

confidence: 77%

Native flowering shrubs promote beneficial insects in avocado orchards

Muñoz

Amouroux

Zaviezo

2021

Agri and Forest Entomology

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1 Flower strips can promote and conserve beneficial insects in agroecosystems. Knowing which groups are favoured and which plant traits affect visitation rates by beneficial insects is important for the design of plant strips. 2 We established 21 Native Flower Strips (NFS) in avocado orchards in Central Chile.NFS contained 7-11 plant species, with variable corolla length and flowering period, to promote beneficial insects. We assessed flight activity of ladybirds (Coccinellidae) and bees (Apiformes) in sites adjacent to and far from NFS within avocado orchards. Additionally, we evaluated flower visitation for the main flower visitor groups (Apiformes, Lepidoptera, Diptera, and Coleoptera) to the plant species in NFS according to season and corolla length. 3 We found almost six times greater flight activity of coccinellids and bees in NFS than sites far from NFS within avocado orchards. Visitation rates of pollinator groups varied according to corolla length and season. Diptera, Coleoptera, and Lepidoptera consistently visited short corolla flowers. NFS were highly visited in summer and autumn, when avocados were not in bloom. 4 NFS in orchards should be encouraged by policymakers because they support beneficial insects that could deliver ecosystem services and contribute to local biological conservation.Keywords floral traits, flower visitors, native bees, native flora, perennial flower strips.

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Section: Discussionmentioning

confidence: 77%

Native flowering shrubs promote beneficial insects in avocado orchards

Muñoz

Amouroux

Zaviezo

2021

Agri and Forest Entomology

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“…La ingesta de polen por coccinélidos puede aumentar su longevidad y fecundidad (Lundgren, 2009), pero las dietas mixtas especialmente con polen, son las más adecuadas para su desarrollo (Nielsen et al, 2002;Schuldiner-Harpaz & Coll, 2017), que solo el consumo de áfidos o de huevos de lepidópteros (Sayed & El Arnaouty, 2016). El polen además de proporcionar nutrientes (Patt et al, 2003), puede contener compuestos que estimulan la ingesta del depredador (Berkvens et al, 2008), pero también producir tasas de desarrollo y reproducción reducidas (Lundgren, 2009;Sayed & El Arnaouty, 2016).…”

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.

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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.

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“…For instance, Bertrand et al [ 56 ] reported that two generalist predators of crop aphids (a ladybeetle species: H. axyridis , and a lacewing species: Chrysoperlacarnea ) could utilize pollen sources from trees (e.g., Salix , Prunus , Quercus , and Acer ) to survive during seasonal shifts in resources in agricultural landscapes. Plant-provided food supplements can affect diversity and biological pest control by omnivorous predators [ 57 ]. Some non-crop plants could attract and conserve aphid predators in specific crop fields [ 58 ], and plant morphology may affect ladybeetle mobility, foraging behavior, and access to prey, encouraging them to forage on preferred plant types [ 59 , 60 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Aphid Density and Plant Taxa on Predatory Ladybeetle Abundance at Field and Landscape Scales

Pan

Liu

Jaworski

et al. 2020

Insects

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In agroecosystems, predatory ladybeetles play an important role in restraining aphid population growth and suppressing aphid populations. They can adapt to various habitats and make use of various aphid species associated with multiple host plants during their life cycle. Agricultural landscapes in China are composed of a mosaic of small fields with a diverse range of crops, and how ladybeetles make use of host plant diversity in such landscapes has rarely been documented. In this study, we examined the relationship between aphid densities and ladybeetle densities in two different settings: (i) on the majority of plant species (including crops, trees, and weeds) at a local field scale in 2013 and 2014, and (ii) in paired cotton and maize crop fields at a regional landscape scale in 2013. Overall, we found that aphid abundance determined predatory ladybeetle abundance at both the local field and landscape scales, and there was a positive correlation between aphid densities and ladybeetle densities. However, plant taxa had no significant influence on the predatory ladybeetle abundance at the local field scale. In addition, the effect of aphids on ladybeetles abundance was influenced by the crop type and growing season at the regional landscape scale. There was a significant positive correlation between aphids and ladybeetles populations on cotton only in July and August, whereas the correlation was significant for maize throughout the whole growing season. We also conducted an analysis of the stable carbon isotope ratios of the adult ladybeetles caught in cotton and maize fields (C3 and C4 crops, respectively) in a regional landscape-scale survey in 2013. The δ13Cvalue indicated that most prey aphids for ladybeetles originated from crops where aphids are abundant (cotton in June and July; both maize and cotton in August).These findings improved our understanding of the migration and dispersal of ladybeetles among different habitats and plant species and provided insight into the promotion of the regional conservation and pest control of natural enemies in northern China.

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Estimating the effect of plant‐provided food supplements on pest consumption by omnivorous predators: lessons from two coccinellid beetles

Cited by 15 publications

References 31 publications

Native flowering shrubs promote beneficial insects in avocado orchards

Native flowering shrubs promote beneficial insects in avocado orchards

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

Effects of Aphid Density and Plant Taxa on Predatory Ladybeetle Abundance at Field and Landscape Scales

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