Daily survival and dispersal of adult Rhagonycha fulva (Coleoptera: Cantharidae) in a wooded agricultural landscape

Rodwell, Laura E.; Day, Jennifer J.; Foster, Christopher W.; Holloway, Graham J.

doi:10.14411/eje.2018.043

Cited by 6 publications

(11 citation statements)

References 37 publications

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“…1). Even if previous literature cites R. fulva as predator of some insects, such as aphids (Pons & Eizaguirre, 2000;Rodwell et al 2018), our results indicate that this predator also consumed N. graminicola, because it was detected in 25% of the analysed R. fulva sample-pools (Fig. S5 (B)).…”

Section: Trophic Interactionscontrasting

confidence: 71%

“…1). This diet is much more diverse than the single plant species cited by Rodwell et al (2018), Heracleum sphondylium L (Apiaceae). The detected plant taxa can be present in ground covers of peach crops, field margins or alfalfa crops in the area of study (Juarez-Escario et al 2010;Juarez-Escario et al,2018;Solé-Senan et al 2018), and some of them, like D. glomerata, P. annua and M. sativa belong to families that were also detected by ingestion (Poaceae and Fabaceae), which may indicate that their body was in contact with pollen from tassels or flowers while consuming it.…”

Section: Trophic Interactionsmentioning

confidence: 99%

“…However, this predatory species has also been described to feed on pollen (Naranjo & Gibson 1996). Rhagonycha fulva is mainly present in wooded agricultural landscapes and arable lands (Meek et al 2002;Rodwell et al 2018). Even if this species is mainly known to feed on pollen and nectar from umbellifers (Apiaceae) (Meek et al 2002), it has also been cited as predator of some insect species (Pons & Eizaguirre, 2000;Rodwell et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Rhagonycha fulva is mainly present in wooded agricultural landscapes and arable lands (Meek et al 2002;Rodwell et al 2018). Even if this species is mainly known to feed on pollen and nectar from umbellifers (Apiaceae) (Meek et al 2002), it has also been cited as predator of some insect species (Pons & Eizaguirre, 2000;Rodwell et al 2018). Nevertheless, its role as biocontrol agent is not well-known, as it is also the case for A. nemoralis in other fruit crops than pears, like peaches.…”

Section: Introductionmentioning

confidence: 99%

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Development of a multi-primer metabarcoding approach to understand trophic interactions in agroecosystems

Batuecas¹,

Alomar²,

Castañé³

et al. 2021

Preprint

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Knowing which arthropod and plant resources are used by generalist predators in agroecosystems is important to understand trophic interactions and the precise ecological role of each predatory species. To achieve this objective, molecular approaches, such as the use of high-throughput sequencing (HTS) platforms are key. This study develops a multi-primer metabarcoding approach and explores its suitability for the screening of the most common trophic interactions of two predatory species of arthropod with contrasted morphology, Rhagonycha fulva (Coleoptera: Cantharidae) and Anthocoris nemoralis (Hemiptera: Anthocoridae) collected in an organic peach crop. To save time and cost in this metabarcoding approach, we first evaluated the effect of two different predator-pool sizes (10 and 23 individuals of the same species), as well as the performance of using one or two primer pairs in the same library. Our results show that the analysis of 23 individuals together with the use of two primer pairs in the same library optimizes the HTS analysis. With these best-performing conditions, we analyzed whole bodies of field-collected predators as well as the washing solutions used to clean the insect bodies. Results showed that we were able to identify both, gut content (i.e. diet) as well as external pollen load (i.e. on the insects body), respectively. This study also demonstrates the need of washing predatory insects prior to HTS analysis when the target species have a considerable size and hairy structures. This metabarcoding approach has a high potential for the study of trophic links in agriculture, revealing both expected and unexpected trophic relationships.

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Section: Trophic Interactionscontrasting

confidence: 71%

Section: Trophic Interactionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Development of a multi-primer metabarcoding approach to understand trophic interactions in agroecosystems

Batuecas¹,

Alomar²,

Castañé³

et al. 2021

Preprint

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“…The smallest dispersal category for species in Irmler et al (2010) was 0-30 m. Using this figure as a guide, immediate habitat mix is defined here as habitat cover within 30 metres of the transect, with the assumption that flowers on the sampling transect are within a single flight range from this zone, even for species that only disperse short distances. The maximum flight distance found by Irmler et al (2010) was [ 80 m but for the majority of species dispersal was limited to \ 80 m. Dispersal flight distances for beetles reported elsewhere generally fall within 200 ms (Schallhart et al 2009;Torres-Vila et al 2017;Rodwell et al 2018). In this study mesoscale landscapes are therefore defined as the area within 200-m buffers from the sampling transect.…”

Section: Immediate Habitat and Mesoscale Landscape Buffersmentioning

confidence: 99%

Linking mesoscale landscape heterogeneity and biodiversity: gardens and tree cover significantly modify flower-visiting beetle communities

2019

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Context Maintaining biodiversity in multifunction landscapes is a significant challenge. Planning for the impacts of change requires knowledge of how species respond to landscape heterogeneity. Some insect groups are known to respond to heterogeneity at the mesoscale, defined here as hundreds of metres. However, for many taxa these effects are poorly known. Objectives To identify key elements of mesoscale landscape heterogeneity influencing community composition in flower-visiting beetles, and whether landscape explains any variation in beetle communities beyond that driven by immediate habitat cover. Methods Flower-visiting beetles were sampled from 36 transects, laid out using a 6 km 2 grid located in southern Britain. Landscape heterogeneity was measured for 30 and 200 m buffers around the transects and the relative response of beetle communities to each assessed using ordination analyses followed by variation partitioning. Results The composition of immediately adjacent habitat (30 m) and mesoscale landscape heterogeneity (200 m) explained unique portions of the variation in flower-visiting beetle communities. A number of species, including those affiliated with deadwood habitats, were positively linked to tree cover in the surrounding mesoscale landscape. Gardens covered a smaller area than trees but modified beetle communities to the same extent. Conclusions The local abundance of some flowervisiting beetles is modified by the composition of the surrounding landscape. Results highlight the importance of tree cover for maintaining insect biodiversity in agricultural landscapes, while suggesting that gardens associated with small urban areas may have a disproportionate influence on biodiversity.

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Revisiting pollination mode in chestnut (Castanea spp.): an integrated approach

et al. 2021

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Daily survival and dispersal of adult Rhagonycha fulva (Coleoptera: Cantharidae) in a wooded agricultural landscape

Cited by 6 publications

References 37 publications

Development of a multi-primer metabarcoding approach to understand trophic interactions in agroecosystems

Development of a multi-primer metabarcoding approach to understand trophic interactions in agroecosystems

Linking mesoscale landscape heterogeneity and biodiversity: gardens and tree cover significantly modify flower-visiting beetle communities

Revisiting pollination mode in chestnut (Castanea spp.): an integrated approach

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