Search results for: Christian Stauffer

Items from 1 to 20 out of 29 results

article

Testing the potential contribution of Wolbachia to speciation when cytoplasmic incompatibility becomes associated with host‐related reproductive isolation

Daniel J. Bruzzese, Hannes Schuler, Thomas M. Wolfe, Mary M. Glover, more

Molecular Ecology > 31 > 10 > 2935 - 2950

Endosymbiont‐induced cytoplasmic incompatibility (CI) may play an important role in arthropod speciation. However, whether CI consistently becomes associated or coupled with other host‐related forms of reproductive isolation (RI) to impede the transfer of endosymbionts between hybridizing populations and further the divergence process remains an open question. Here, we show that varying degrees of...

article

Comparative genome sequencing reveals insights into the dynamics of Wolbachia in native and invasive cherry fruit flies

Thomas M. Wolfe, Daniel J. Bruzzese, Lisa Klasson, Erika Corretto, more

Molecular Ecology > 30 > 23 > 6259 - 6272

Wolbachia is a maternally inherited obligate endosymbiont that can induce a wide spectrum of effects in its host, ranging from mutualism to reproductive parasitism. At the genomic level, recombination within and between strains, transposable elements, and horizontal transfer of strains between host species make Wolbachia an evolutionarily dynamic bacterial system. The invasive cherry fruit fly Rhagoletis cingulata...

article

Host plant‐related genomic differentiation in the European cherry fruit fly, Rhagoletis cerasi

Vid Bakovic, Hannes Schuler, Martin Schebeck, Jeffrey L. Feder, more

Molecular Ecology > 28 > 20 > 4648 - 4666

Elucidating the mechanisms and conditions facilitating the formation of biodiversity are central topics in evolutionary biology. A growing number of studies imply that divergent ecological selection may often play a critical role in speciation by counteracting the homogenising effects of gene flow. Several examples involve phytophagous insects, where divergent selection pressures associated with host...

article

Special issue on invasive pests of forests and urban trees: pathways, early detection, and management

Jon Sweeney, Davide Rassati, Nicolas Meurisse, Brett Hurley, more

Journal of Pest Science > 2019 > 92 > 1 > 1-2

article

Species‐specific fish larvae drift in anthropogenically constructed riparian zones on the Vienna impoundment of the River Danube, Austria: Species occurrence, frequencies, and seasonal patterns based on DNA barcoding

Paul Meulenbroek, Silke Drexler, Daniela Huemer, Stephanie Gruber, more

River Research and Applications > 34 > 7 > 854 - 862

As a result of river regulations over several centuries, followed by restoration measures in recent decades, most of the River Danube shoreline is man‐made, primarily riprap, but some reconstructed gravel banks and riparian side arms. We investigated the effects of these different structures on fish larval dispersal over a 20‐km stretch in Vienna via the use of drift nets. The habitats examined were...

article

Fine‐scale genetic structure in an eastern Alpine black grouse Tetrao tetrix metapopulation

Marcia Sittenthaler, Florian Kunz, Aneta Szymusik, Veronika Grünschachner‐Berger, more

Journal of Avian Biology > 49 > 5 > n/a - n/a

Understanding genetic consequences of habitat fragmentation is crucial for the management and conservation of wildlife populations, especially in case of species sensitive to environmental changes and landscape alteration. In central Europe, the Alps are the core area of black grouse Tetrao tetrix distribution. There, black grouse dispersal is limited by high altitude mountain ridges and recent black...

article

Sterile insect technique and Wolbachia symbiosis as potential tools for the control of the invasive species Drosophila suzukii

Katerina Nikolouli, Hervé Colinet, David Renault, Thomas Enriquez, more

Journal of Pest Science > 2018 > 91 > 2 > 489-503

Drosophila suzukii, a vinegar fly originated from Southeast Asia, has recently invaded western countries, and it has been recognized as an important threat of a wide variety of several commercial soft fruits. This review summarizes the current information about the biology and dispersal of D. suzukii and discusses the current status and prospects of control methods for the management of this pest...

article

Diapause and overwintering of two spruce bark beetle species

Martin Schebeck, E. Matthew Hansen, Axel Schopf, Gregory J. Ragland, more

Physiological Entomology > 42 > 3 > 200 - 210

Diapause, a strategy to endure unfavourable conditions (e.g. cold winters) is commonly found in ectothermic organisms and is characterized by an arrest of development and reproduction, a reduction of metabolic rate, and an increased resistance to adversity. Diapause, in addition to adaptations for surviving low winter temperatures, significantly influences phenology, voltinism and ultimately population...

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The hitchhiker's guide to Europe: the infection dynamics of an ongoing Wolbachia invasion and mitochondrial selective sweep in Rhagoletis cerasi

Hannes Schuler, Kirsten Köppler, Sabine Daxböck‐Horvath, Bilal Rasool, more

Molecular Ecology > 25 > 7 > 1595 - 1609

Wolbachia is a maternally inherited and ubiquitous endosymbiont of insects. It can hijack host reproduction by manipulations such as cytoplasmic incompatibility (CI) to enhance vertical transmission. Horizontal transmission of Wolbachia can also result in the colonization of new mitochondrial lineages. In this study, we present a 15‐year‐long survey of Wolbachia in the cherry fruit fly Rhagoletis cerasi...

article

Evidence for a recent horizontal transmission and spatial spread of Wolbachia from endemic Rhagoletis cerasi (Diptera: Tephritidae) to invasive Rhagoletis cingulata in Europe

Hannes Schuler, Coralie Bertheau, Scott P. Egan, Jeffrey L. Feder, more

Molecular Ecology > 22 > 15 > 4101 - 4111

The widespread occurrence of Wolbachia in arthropods and nematodes suggests that this intracellular, maternally inherited endosymbiont has the ability to cross species boundaries. However, direct evidence for such a horizontal transmission of Wolbachia in nature is scarce. Here, we compare the well‐characterized Wolbachia infection of the European cherry fruit fly, Rhagoletis cerasi, with that of...

article

Divergent evolutionary histories of two sympatric spruce bark beetle species

Coralie Bertheau, Hannes Schuler, Wolfgang Arthofer, Dimitrios N. Avtzis, more

Molecular Ecology > 22 > 12 > 3318 - 3332

Ips typographus and Pityogenes chalcographus are two sympatric Palearctic bark beetle species with wide distribution ranges. As both species are comparable in biology, life history, and habitat, including sharing the same host, Picea abies, they provide excellent models for applying a comparative approach in which to identify common historical patterns of population differentiation and the influence...

article

Invasion genetics of American cherry fruit fly in Europe and signals of hybridization with the European cherry fruit fly

Jes Johannesen, Nusha Keyghobadi, Hannes Schuler, Christian Stauffer, more

Entomologia Experimentalis et Applicata > 147 > 1 > 61 - 72

The American cherry fruit fly is an invasive pest species in Europe, of serious concern in tart cherry production as well as for the potential to hybridize with the European cherry fruit fly, Rhagoletis cerasi L. (Diptera: Tephritidae), which might induce new pest dynamics. In the first European reports, the question arose whether only the eastern American cherry fruit fly, Rhagoletis cingulata (Loew)...

article

Impact of the Carpathians on the genetic structure of the spruce bark beetle Ips typographus

Eva Krascsenitsová, Milan Kozánek, Ján Ferenčík, Ladislav Roller, more

Journal of Pest Science > 2013 > 86 > 4 > 669-676

The Carpathians are a range of mountains forming an arc roughly 1,500 km long across Central and Eastern Europe. They are an important area for biodiversity and belong to one of the major refuges of the last ice ages for many organisms. The forests of the Carpathians are dominated by spruce, which have suffered continuous outbreaks of the eight spined spruce bark beetle, Ips typographus, in recent...

article

Editorial 2012: shaping the profile of Journal of Pest Science

Michael Traugott, Christos Athanassiou, Chris Cutler, Nicolas Desneux, more

Journal of Pest Science > 2012 > 85 > 1 > 1-3

article

Hit or miss in phylogeographic analyses: the case of the cryptic NUMTs

CORALIE BERTHEAU, HANNES SCHULER, SUSANNE KRUMBÖCK, WOLFGANG ARTHOFER, more

Molecular Ecology Resources > 11 > 6 > 1056 - 1059

Phylogeographic studies call for attention as nuclear copies of mitochondrial DNA (NUMT) may generate erroneous results. Here, we report the presence of NUMTs differing only by 1–3 bp from authentic mitochondrial haplotypes, consequently named cryptic NUMTs. In contrast to traditional NUMTs, for which reliable tools for detection are established, cryptic NUMTs question the validity of phylogeographic...

article

Multiple Wolbachia infections in Rhagoletis pomonella

Hannes Schuler, Wolfgang Arthofer, Markus Riegler, Coralie Bertheau, more

Entomologia Experimentalis et Applicata > 139 > 2 > 138 - 144

Rhagoletis pomonella Walsh (Diptera: Tephritidae) is a model species for sympatric speciation through host race formation on apple and hawthorn. The bacterial endosymbiont Wolbachia, a manipulator of arthropod reproduction, has been considered to contribute to speciation in several species. A potential role of Wolbachia in sympatric speciation of R. pomonella remains to be tested despite an earlier...

article

Mixed colonies and hybridisation of Messor harvester ant species (Hymenoptera: Formicidae)

Florian M. Steiner, Bernhard Seifert, Donato A. Grasso, Francesco Le Moli, more

Organisms Diversity & Evolution > 2011 > 11 > 2 > 107-134

The Mediterranean harvester ant species Messor minor, M. cf. wasmanni, and M. capitatus can co-occur in the same habitat. In Italian populations, we encountered colonies that contained workers from more than one species as identified via standard morphology, as well as colonies with workers that appeared to be morphologically intermediate between species. This unusual finding required further analysis...

article

Total body nitrogen and total body carbon as indicators of body protein and body lipids in the melon fly Bactrocera cucurbitae: Effects of methoprene, a juvenile hormone analogue, and of diet supplementation with hydrolyzed yeast

Ihsan ul Haq, Leopold Mayr, P.E.A. Teal, Jorge Hendrichs, more

Journal of Insect Physiology > 2010 > 56 > 12 > 1807-1815

The application of methoprene, and providing access to diet including hydrolyzed yeast, are treatments known to enhance mating success in the male melon fly Bactrocera cucurbitae Coquillett (Diptera: Tephritidae), supporting their use in mass rearing protocols for sterile males in the context of sterile insect technique (SIT) programmes. The objective of the present laboratory study was to investigate...

article

Effects of the juvenile hormone analogue methoprene and dietary protein on male melon fly Bactrocera cucurbitae (Diptera: Tephritidae) mating success

Ihsan ul Haq, Carlos Cáceres, Jorge Hendrichs, Peter Teal, more

Journal of Insect Physiology > 2010 > 56 > 11 > 1503-1509

The effect of access to dietary protein (P) and the topical application of a juvenile hormone analogue (methoprene (M)) on mating behaviour of male melon fly Bactrocera cucurbitae was assessed in the laboratory and in field cages. Age, dietary protein and methoprene application increased the mating success and influenced the mating behaviour. Treatment with methoprene (M+) to protein-deprived (P−)...

article

Twenty four new microsatellite markers in two invasive pavement ants, Tetramorium sp.E and T. tsushimae (Hymenoptera: Formicidae)

Florian M. Steiner, Wolfgang Arthofer, Birgit C. Schlick-Steiner, Ross H. Crozier, more

Conservation Genetics > 2008 > 9 > 3 > 757-759

Invasive species trigger biodiversity losses and alter ecosystem functioning, with life history shaping invasiveness (Sakai et al., Annu Rev Ecol Syst 32:305–332, 2001). However, pinpointing the relation of a specific life history to invasion success is difficult. One approach may be comparing congeners. The two Palearctic pavement ants, Tetramorium sp.E (widely known as T. caespitum, Schlick-Steiner...

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Search results for: Christian Stauffer

Testing the potential contribution of Wolbachia to speciation when cytoplasmic incompatibility becomes associated with host‐related reproductive isolation

Comparative genome sequencing reveals insights into the dynamics of Wolbachia in native and invasive cherry fruit flies

Host plant‐related genomic differentiation in the European cherry fruit fly, Rhagoletis cerasi

Special issue on invasive pests of forests and urban trees: pathways, early detection, and management

Species‐specific fish larvae drift in anthropogenically constructed riparian zones on the Vienna impoundment of the River Danube, Austria: Species occurrence, frequencies, and seasonal patterns based on DNA barcoding

Fine‐scale genetic structure in an eastern Alpine black grouse Tetrao tetrix metapopulation

Sterile insect technique and Wolbachia symbiosis as potential tools for the control of the invasive species Drosophila suzukii

Diapause and overwintering of two spruce bark beetle species

The hitchhiker's guide to Europe: the infection dynamics of an ongoing Wolbachia invasion and mitochondrial selective sweep in Rhagoletis cerasi

Evidence for a recent horizontal transmission and spatial spread of Wolbachia from endemic Rhagoletis cerasi (Diptera: Tephritidae) to invasive Rhagoletis cingulata in Europe

Divergent evolutionary histories of two sympatric spruce bark beetle species

Invasion genetics of American cherry fruit fly in Europe and signals of hybridization with the European cherry fruit fly

Impact of the Carpathians on the genetic structure of the spruce bark beetle Ips typographus

Editorial 2012: shaping the profile of Journal of Pest Science

Hit or miss in phylogeographic analyses: the case of the cryptic NUMTs

Multiple Wolbachia infections in Rhagoletis pomonella

Mixed colonies and hybridisation of Messor harvester ant species (Hymenoptera: Formicidae)

Total body nitrogen and total body carbon as indicators of body protein and body lipids in the melon fly Bactrocera cucurbitae: Effects of methoprene, a juvenile hormone analogue, and of diet supplementation with hydrolyzed yeast

Effects of the juvenile hormone analogue methoprene and dietary protein on male melon fly Bactrocera cucurbitae (Diptera: Tephritidae) mating success

Twenty four new microsatellite markers in two invasive pavement ants, Tetramorium sp.E and T. tsushimae (Hymenoptera: Formicidae)

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