Results 21 to 30 of about 462 (123)

Identifying environmental factors affecting the production of pea aphid dispersal morphs in field populations

Ecological Entomology, Volume 48, Issue 5, Page 597-609, October 2023., 2023
In a three‐year study, we examined multiple environmental factors on winged morph production in pea aphid populations under field conditions. Pea aphid abundance, temperature, and host plant maturity together explained 67% of the variation in winged morph production. The other factors we investigated explained little variation.
Michael J. Bosch, Anthony R. Ives
wiley   +1 more source

Traditional grazing management creates heterogeneous swards and fosters grasshopper densities

Insect Science, Volume 29, Issue 6, Page 1805-1818, December 2022., 2022
Graphical Abstract Abstract Common pastures were once the dominant type of land use in many European regions. However, during the past 150 years, they have declined dramatically. Recent studies have shown that they are hotspots for rare plant, butterfly, and bird species in the study area, the Bavarian pre‐Alps (southern Germany).
Cinja Schwarz, Thomas Fartmann
wiley   +1 more source

Assessing grasshopper communities in mountainous meadows – a comparison of a visual‐acoustic and a novel, purely acoustic soundscape method

Entomologia Experimentalis et Applicata, Volume 170, Issue 10, Page 895-901, October 2022., 2022
Grasshoppers (Orthoptera, suborders Ensifera and Caelifera) are often collected as model organisms in ecological studies by using different methods. We tested the efficiency of two methods for assessing grasshopper species richness and assemblages on mountainous meadows in the Austrian Alps.
Ronnie Walcher, Raja Imran Hussain, Leopold Sachslehner, Johann G. Zaller, Arne Arnberger, Thomas Frank   +5 more
wiley   +1 more source

Summer drought affects abundance of grassland grasshoppers differently along an elevation gradient

Ecological Entomology, Volume 47, Issue 5, Page 778-790, October 2022., 2022
Summer temperature was the key driver of grasshopper abundance. Abundance was lowest in grasslands that were situated at lower elevations with higher summer temperatures and that were characterised by the strongest effects of summer drought. Suitable conservation strategies that increase the resistance and resilience of temperate semi‐natural ...
Thomas Fartmann, Jonas Brüggeshemke, Dominik Poniatowski, Franz Löffler   +3 more
wiley   +1 more source

Re‐surveys reveal biotic homogenization of Orthoptera assemblages as a consequence of environmental change

Diversity and Distributions, Volume 28, Issue 9, Page 1795-1809, September 2022., 2022
Abstract Aim Biodiversity loss is a major global challenge. While population trends of vertebrates are well documented, insect declines have not been sufficiently studied. We aim to identify changes in Orthoptera assemblages and the underlying drivers with a focus on land‐use and climate change. Location Central Europe.
Sophie Ogan, Christian Paulus, Christoph Froehlich, Carsten Renker, Claude Kolwelter, Marc Schendzielorz, Anja Danielczak, Katrin Müller, Hannah Eulering, Axel Hochkirch, José Brito   +10 more
wiley   +1 more source

Function of male genital titillators in mating and spermatophore transfer in the tettigoniid bushcricketMetrioptera roeselii [PDF]

Biological Journal of the Linnean Society, 2015
Males of certain bushcrickets (Orthoptera: Ensifera: Tettigoniidae) possess sclerotized internal genital devices termed titillators. These titillators are paired chitinized structures for which the function remains to be completely determined. We studied the role of the titillators during copulation in the bushcricket Metrioptera roeselii (Hagenbach ...
Nadja C. Wulff, Gerlind U. C. Lehmann
openaire   +1 more source

The classification of insect communities: Lessons from orthopteran assemblages of semi-dry calcareous grasslands in central Germany

European Journal of Entomology, 2008
Whereas the classification of plant communities has a long tradition that of animal assemblages remains poorly developed. Here we propose a classification scheme for orthopteran communities based on regional "character species", "differential species ...
Dominik PONIATOWSKI, Thomas FARTMANN
doaj   +1 more source

Relative impacts of land‐use and climate change on grasshopper range shifts have changed over time

Global Ecology and Biogeography, Volume 29, Issue 12, Page 2190-2202, December 2020., 2020
Abstract Aim Stopping the decline of biodiversity is one of today’s greatest challenges. To help address this, we require studies that disentangle the effects of the most important drivers behind species range losses and shifts. In this large‐scale study, we aim to evaluate the relative impacts of changes in land use and climate on distributional ...
Dominik Poniatowski, Christian Beckmann, Franz Löffler, Thorsten Münsch, Felix Helbing, Michael John Samways, Thomas Fartmann, Lesley Lancaster   +7 more
wiley   +1 more source

A clue to invasion success: genetic diversity quickly rebounds after introduction bottlenecks

Biological Invasions, 2020
One of the fundamental questions in invasion biology is to understand the genetic mechanisms behind success or failure during the establishment of a species. However, major limitations to understanding are usually a lack of spatiotemporal population data
P. Kaňuch, Å. Berggren, A. Cassel‐Lundhagen   +2 more
semanticscholar   +1 more source

Roeseliana roeselii

, 2023
<i>Roeseliana roeselii</i> (Hagenbach, 1822) <p>Figs. 1a, 3e, 4, 5i, 5j, 6b, 8b, 10, 22h, 23c, 24a, 24b, 24c, 24d</p> <p> Hagenbach, 1822.
Fontana, Paolo, Scherini, Roberto, Tagliavia, Marcello, Bardiani, Marco, Verde, Gabriella Lo, Carotti, Giovanni, Leandri, Fausto, Massa, Bruno, Buzzetti, Filippo Maria   +8 more
core   +1 more source