EJE, vol. 111 (2014), issue 5

Editorial: 16th European carabidologists meeting, Prague 2013


Eur. J. Entomol. 111 (5): 598-599, 2014 | 10.14411/eje.2014.092


Elytral surface structure in Poecilus lepidus (Coleoptera: Carabidae): What about the nature of its inheritance?


Eur. J. Entomol. 111 (5): 601-607, 2014 | 10.14411/eje.2014.087

The cuticle of the ground beetle Poecilus lepidus (Leske) (Coleoptera: Carabidae) displays a complex variety of colour morphs that are genetically determined. Besides the colour of the elytra, there is a remarkable intersexual dimorphic difference in its surface structure between males and females, as there is in most Poecilus species. At least in Central European populations of P. lepidus, all males exhibit a bright elytral surface, whereas all females exhibit a matt surface; this difference is due to a nearly plain surface in males but a knobbly sculptured one in females. At first glance, this phenomenon may be easily interpreted...

The effects of overwintering, sex, year, field identity and vegetation at the boundary of fields on the body condition of Anchomenus dorsalis (Coleoptera: Carabidae)


Eur. J. Entomol. 111 (5): 608-614, 2014 | 10.14411/eje.2014.085

Body condition, in terms of body mass corrected for structural body size, represents an animal s energetic reserves and is an indicator of the health and fitness of an organism. This study investigates the variability in the body condition of the carabid beetle, Anchomenus dorsalis, in time and space at a small scale. The beetles were collected in four fields with two types of boundary (grassy and forest) near Prague-Suchdol in autumn 2009 and 2010 and in spring 2010 and 2011. Body condition was significantly affected by overwintering (the body condition of post-overwintering individuals collected in spring was worse than that of pre-overwintering...

Weed seed choice by carabid beetles (Coleoptera: Carabidae): Linking field measurements with laboratory diet assessments

Sandrine PETIT, Aline BOURSAULT, David A. BOHAN

Eur. J. Entomol. 111 (5): 615-620, 2014 | 10.14411/eje.2014.086

Carabid beetles could potentially provide a number of ecosystem services in arable fields, including the regulation of weeds by eating seeds. Spatio-temporal variability in the incidence of predation combined with a limited understanding of the interactions between carabids and seed predation, currently limits our ability to assess the effectiveness of this service. We carried out a long-term field study of carabid communities and the incidence of predation of the seeds of 5 species of weeds and laboratory cafeteria choice-tests to quantify the preferences of the most abundant species of seed-eating carabid for the seeds of 10 species of weeds. The...

Thermal constants of egg development in carabid beetles - variation resulting from using different estimation methods and among geographically distant European populations


Eur. J. Entomol. 111 (5): 621-630, 2014 | 10.14411/eje.2014.077

Using equations based on the law of total effective temperatures, we estimated the thermal constants (LDT, the lower development threshold, and SET, the sum of effective temperatures) of egg development for 14 populations of 13 species of carabid beetles (eight belonging to the tribe Zabrini, one to Platynini and four to Pterostichini). We compared the estimates of the thermal constants obtained using three commonly used equations (D = SET / (T - LDT); 1 / D = a + b . T, where LDT = -a / b, and SET = 1 / b; and D . T = SET + D . LDT) and two data formats: data points for all the individuals and...

Prey detection in carabid beetles (Coleoptera: Carabidae) in woodland ecosystems by PCR analysis of gut contents


Eur. J. Entomol. 111 (5): 631-638, 2014 | 10.14411/eje.2014.079

Predatory carabid beetles are important for regulating prey abundance in terrestrial ecosystems. While surveys of carabid diet have revealed many insights into trophic interactions, the high species diversity and heterogeneous developmental stages of prey identified in the gut have made further advances difficult. In addition, the carabid gut contains partially digested and mainly soft tissue parts of the prey species, difficult to identify by traditional methods. Molecular gut content analysis (MGCA) avoids these disadvantages but to date has been limited primarily to revealing pest species in agricultural fields. Here we used MGCA to screen for the...

Consequence of the transformation of a primeval forest into a managed forest for carabid beetles (Coleoptera: Carabidae) - a case study from Bia³owie¿a (Poland)


Eur. J. Entomol. 111 (5): 639-648, 2014 | 10.14411/eje.2014.088

A comparison was made of the number of species, species diversity and ecological traits of carabid beetle (Coleoptera: Carabidae) assemblages inhabiting Bia³owie¿a Primeval Forest (National Park) and adjacent managed Bia³owie¿a forest planted following clear-cutting of the primeval forest 80 years ago. Five pitfall traps were set in each plot in the primeval and managed forests in areas that differed in terms of humidity and soil fertility. The first hypothesis tested was that the type of stand (primeval vs. managed) has a greater effect on species diversity and life history traits of carabid assemblages than soil fertility or humidity. The second...

Quantifying predation pressure along an urbanisation gradient in Denmark using artificial caterpillars

Marco FERRANTE, Alessandro LO CACCIATO, Gabor L. LÖVEI

Eur. J. Entomol. 111 (5): 649-654, 2014 | 10.14411/eje.2014.082

Urbanisation results in a marked modification of habitats and influences several ecological processes, some of which give rise to beneficial ecological services. Natural pest control, the effect of predators on prey is one of such services. We quantified changes in the incidence of predation with increasing levels of urbanisation using artificial caterpillars made of green plasticine. Potential predators can be identified by the "attack marks" they leave on these artificial caterpillars. We conducted this study from May to October 2010 around the city of Sorø (Zealand, Denmark), in forests along an urbanisation gradient (rural-suburban-urban)....

The effect of the construction and renovation of a highway bypass in Central Poland on the carabid beetle fauna (Coleoptera: Carabidae)


Eur. J. Entomol. 111 (5): 655-662, 2014 | 10.14411/eje.2014.081

The aim of this research was to define the effect of the construction and renovation of a highway bypass around the town of Skêpe on the environment and assemblages of carabid beetles. This four-year study was based on catching samples of beetles using pitfall traps. The traps were set first in 2008 and later from 2010 to 2012, after the renovation of the road, along roadside verges adjacent to two ca. 100-year-old pine forest stands, wet habitats and fallows of arable fields and inside these habitats about 25 m from the road (control plots). The carabids collected were identified to species and numbers of individuals and dominance values of each of...

Dispersal of individuals of the flightless grassland ground beetle, Carabus hungaricus (Coleoptera: Carabidae), in three populations and what they tell us about mobility estimates based on mark-recapture

Zoltan ELEK, Luká¹ DRAG, Pavel POKLUDA, Luká¹ ÈÍ®EK, Sándor BÉRCES

Eur. J. Entomol. 111 (5): 663-668, 2014 | 10.14411/eje.2014.080

Knowledge of the dispersal ability of endangered species is crucial for developing effective, evidence-based conservation policies. Due to their limited dispersal abilities and specific habitat requirements, insects are among the animals most threatened by habitat fragmentation. We studied three populations of the highly endangered species of ground beetle, Carabus hungaricus, at three sites in Central Europe (Hungary and Czech Republic) using mark-release-recapture (MRR). The total catch of 574 pitfall traps set at the three sites was 6255 individuals. Depending on the site, the percentage recaptured was 13-32%. Average and maximum distance...

Effect of conventional and non-inversion tillage systems on the abundance and some life history traits of carabid beetles (Coleoptera: Carabidae) in winter triticale fields


Eur. J. Entomol. 111 (5): 669-676, 2014 | 10.14411/eje.2014.078

Soil cultivation is among the principal factors that determine the structure and properties of soil and also affects the species composition and abundance of soil dwelling arthropods. Carabid beetles are a particularly valuable group of arthropods, the species of which are strongly associated with particular soil environments. This paper discusses the effect of soil tillage on carabid beetle assemblages. The study was carried out near Olsztyn, in northeastern Poland. Six wheat fields, each cultivated using either, conventional or non-inversion, soil tillage, were chosen. Carabid beetles were caught in Barber s traps from early April to the end of October...

Changes in carabid beetle fauna (Coleoptera: Carabidae) along successional gradients in post-industrial areas in Central Poland


Eur. J. Entomol. 111 (5): 677-685, 2014 | 10.14411/eje.2014.076

An inventory of the carabid fauna was carried out in two post-industrial areas in central Poland. The two areas studied were a heap of ash generated by a power station and a colliery spoil heap. In each area sites of different ages were investigated using pitfall traps over an eight year period from 2004 to 2011. At the end of this period each of the youngest sites was as old, or even older, than the next oldest site studied in each area. A pine forest growing on natural soil close to the ash heap was included as a reference study site. Changes were described in terms of the numbers of species and individuals, total biomass, Mean Individual Biomass...

Edge effects on ground-dwelling beetles (Carabidae and Staphylinidae) in oak forest-forest edge-grassland habitats in Hungary

Béla TÓTHMÉRÉSZ, Dávid D. NAGY, Szabolcs MIZSER, Dávid BOGYÓ, Tibor MAGURA

Eur. J. Entomol. 111 (5): 686-691, 2014 | 10.14411/eje.2014.091

Forest edges are essential to the maintenance of biodiversity at the landscape level. According to the edge effect hypothesis, diversity is higher in an edge than in adjacent areas. We tested the edge effect hypothesis for carabids and staphylinids in an oak forest-forest edge-grassland complex in the Hajdúság Landscape Protection Area (Hungary). The habitat types were as follows: (1) a closed oak forest with shrubs and herbaceous plants, (2) a forest edge with extensive ground vegetation and shrub cover and (3) grassland with dense herbaceous vegetation. We collected data from 60 pitfall traps (2 spatial replicates × 3 habitats × 10 traps). The GLM...

Form, function and evolutionary significance of stridulatory organs in ant nest beetles (Coleoptera: Carabidae: Paussini)


Eur. J. Entomol. 111 (5): 692-702, 2014 | 10.14411/eje.2014.083

Stridulatory organs in the myrmecophilous carabid beetle tribe Paussini have long been recognized and used as a defining character of some genera and higher level taxa, however their morphology has only roughly been described. Here, we describe the fine morphology of Paussini stridulatory organs using scanning electron (SEM) and focused ion beam (FIB) microscopy. Within this tribe, there are three types of stridulatory organs, each with different positions of the scraper (plectrum) and file (pars stridens). Type I (abdomen-femur type) is located on the abdomen (scraper) and metafemur (file) in the subtribe Paussina (sensu Geiselhardt et al., 2007,...

Benign neglect enhances urban habitat heterogeneity: Responses of vegetation and carabid beetles (Coleoptera: Carabidae) to the cessation of mowing of park lawns

Stephen VENN, D. Johan KOTZE

Eur. J. Entomol. 111 (5): 703-714, 2014 | 10.14411/eje.2014.089

In this study, we investigate the changes in both vascular plant and carabid beetle assemblages in response to reducing the intensity of management of park lawns in the city of Helsinki. Three levels of mowing were applied to patches of previously managed park lawns: (1) intensively mown, (2) mown until the previous season and unmanaged since, and (3) unmanaged for ten years (benign neglect). The lawns were dominated by plants that disperse vegetatively. This treatment gradient had little or no effect on the flight capability, feeding type or body-size of carabid beetles. However, there was an increase in species richness and the numbers of stenotopic...

Old forest edges may promote the distribution of forest species in carabid assemblages (Coleoptera: Carabidae) in Croatian forests

Andreja BRIGIÆ, Marija STARÈEVIÆ, Boris HRA©OVEC, Zoltán ELEK

Eur. J. Entomol. 111 (5): 715-725, 2014 | 10.14411/eje.2014.090

Boundaries between habitats are usually accompanied by transitions in the diversity and structural complexity of insect assemblages. Edge effects on carabid beetle assemblages across forest-meadow ecotones in Dinaric beech-fir forests were determined in the Gorski Kotar region of western Croatia. Carabid beetles were sampled using pitfall traps set along gradients extending 60 m from the forest edge into its interior and 60 m into the meadow. Embedded forest edges were greater than 100 years old and had a similar composition and structure of vegetation to that in the adjacent forest. A total of 20,526 individuals belonging to 66 carabid beetle species...

Isolation and characterization of eleven polymorphic microsatellite markers from the beneficial carabid beetle, Poecilus cupreus (Coleoptera: Carabidae), and genetic structuring among three populations from western France

Ronan MARREC, Stéphanie RUAULT, Cécile RIBOUT, Manuel PLANTEGENEST, Bertrand GAUFFRE

Eur. J. Entomol. 111 (5): 726-729, 2014 | 10.14411/eje.2014.084

Poecilus cupreus (L.) (Coleoptera: Carabidae) is a typical polyphagous predator species on arable lands. In this study, 11 polymorphic microsatellite markers were developed from genomic DNA of P. cupreus. Genotypes of 87 individuals sampled from three localities in Western France were analyzed to characterize the polymorphism at each locus. The number of alleles ranged from 3 to 20. All pairs of loci were in linkage equilibrium. The expected and observed heterozygosity ranged from 0.165 to 0.890 and 0.103 to 0.926, respectively. From the northern to the southern sites, six, three, and six loci showed significant deviations from Hardy-Weinberg...