A5102961134- Ecology and Vegetation Dynamics Studies
- Insect Utilization and Effects
- Plant and animal studies
- Wildlife Ecology and Conservation
- Insect and Arachnid Ecology and Behavior
- Species Distribution and Climate Change
- Animal and Plant Science Education
- Avian ecology and behavior
- Animal Behavior and Reproduction
- Orthoptera Research and Taxonomy
- Genetic diversity and population structure
- Insect and Pesticide Research
- Animal Ecology and Behavior Studies
- Genetic and phenotypic traits in livestock
- Wildlife-Road Interactions and Conservation
- Morphological variations and asymmetry
- Viral Infections and Vectors
- Lepidoptera: Biology and Taxonomy
- Insects and Parasite Interactions
- Plant Parasitism and Resistance
- Forest Insect Ecology and Management
- Bird parasitology and diseases
- Evolution and Genetic Dynamics
- Neurobiology and Insect Physiology Research
- Beetle Biology and Toxicology Studies
Swedish University of Agricultural Sciences
2015-2024
Swedish Species Information Centre
2010
Massey University
2004-2008
Abstract: One method proposed for moderating the negative effects of habitat isolation is preservation or restoration linear landscape elements that structurally link isolated remnants. An understanding how animals react to and move through vital species management theory development. To achieve this understanding, detailed information on movement rates specific behavior individual in different ecosystems essential. In an experimental study, we investigated whether individuals Roesel's...
Current predictions regarding the ecological consequences of climate change on animal populations are generally autecological and species‐specific, and/or non‐mechanistic extrapolations recent short‐term patterns. To better understand predict effects distribution species abundance we offer a novel, broad theoretical framework. Climate‐induced changes in trophic structure may actually be more predictable than individual species. The logic is that there general differences climatic sensitivity...
Both the environment and spatial configuration of habitat patches are important factors that shape community composition affect species diversity patterns. Species have traits allow them to respond their environment. Our current knowledge on relationships is limited in spite its potential importance for understanding assembly ecosystem function. The aim our study was examine relative roles environmental variables small-scale variation Collembola (springtail) communities a Dutch salt marsh....
This study evaluated survival and growth of Cambodian field crickets ( Teleogryllus testaceus ) during captivity when fed a set local weed species, agricultural food industry by-products. Wild individuals were caught at two locations in Cambodia, kept pens commercial chicken feed until the second generation off-spring hatched. First larval stage nymphs from this collected used 70-day feeding trial with one control treatment (chicken feed) 12 experimental treatments (rice bran, cassava plant...
Insects as food show a large variation in traditional use over the world. This high between countries combination with current ideas of insects part solution to feed growing global population raises interesting questions. The aim this paper is investigate what has been perceived historically and how changes time focus on insects. their products have used for medicine within outside Europe long we records. They not staple but rare addition diet. frequency Europe, even times crisis, points...
Abstract This article documents the addition of 411 microsatellite marker loci and 15 pairs Single Nucleotide Polymorphism (SNP) sequencing primers to Molecular Ecology Resources Database. Loci were developed for following species: Acanthopagrus schlegeli, Anopheles lesteri, Aspergillus clavatus, flavus, fumigatus, oryzae, terreus, Branchiostoma japonicum, belcheri, Colias behrii, Coryphopterus personatus, Cynogolssus semilaevis, Cynoglossus Dendrobium officinale, Dysoxylum malabaricum,...
Summary Fragmentation and habitat loss affects both existing introduced populations. Small areas may have harsher biotic abiotic conditions, as well restricting population sizes. Loss of connectivity reduces the opportunities for individuals to move between patches rescue populations or re‐colonize patches. Knowledge how landscape composition is therefore essential successful management future re‐introductions. To study effect structure on success colonization, growth dispersal distances, we...
Assessing the colonizing ability of a species is important for predicting its future distribution or planning introduction reintroduction that conservation purposes. The best way to assess by making experimental introductions and monitoring outcome. In this study, different-sized propagules Roesel's bush-cricket, Metrioptera roeseli, were experimentally introduced into 70 habitat islands, previously uninhabited species, in farmland fields southeastern Sweden. areas carefully monitored 2–3 yr...
The bush cricket, Metrioptera roeseli (Orthoptera, Tettigoniidae), occurs in patchy and heterogeneous agricultural landscapes. Such a mosaic of different types grassland habitats causes spatial variation local population density. Low densities may result fewer mating opportunities that can give rise to an Allee effect, possibly leading decline or extinction. This experimental study shows individuals avoid effect by adjusting their movement behaviour sparse populations. Even at density five...
1.Adams and Zhang recently published one of the best studies so far patterns insect folivory along a latitudinal (climatic) gradient. They show clear negative trends in foliage loss relation to temperature for certain groups herbivores.2.Although their suggestion that plant-herbivore interaction may be more important cooler climates could valid, they did not bring up complementary explanation interactions between predators herbivores also vary with climate. There are indications natural...
Abstract One of the fundamental questions in invasion biology is to understand genetic mechanisms behind success or failure during establishment a species. However, major limitations understanding are usually lack spatiotemporal population data and information on populations’ colonisation history. In large-scale, detailed study bush-cricket Metrioptera roeselii 70 groups founders were introduced areas outside species’ distribution range. We examined how (1) number (2–32 individuals), (2)...
Abstract Pollinators benefit from increasing floral resources in agricultural landscapes, which could be an underexplored co‐benefit of mass‐flowering crop cultivation. However, the impacts crops on pollinator communities are complex and appear to context‐dependent, mediated by factors such as flowering time availability other flower landscape. A synthesis research is needed develop management recommendations for effective conservation agroecosystems. By combining 22 datasets 13 publications...
Orthopteran insects have high reproductive rates leading to boom-bust population dynamics with local densities that are ideal for short, episodic disease epidemics. Viruses particularly well suited such host dynamics, due their supreme ability adapt changing transmission criteria. However, very little is known about the viruses of insects. Since Orthopterans increasingly reared commercially, animal feed and human consumption, there a risk naturally associated these can commercial rearing...
Managing road verges to promote diverse and flower-rich plant communities has been proposed mitigate the decline of pollinating insects caused by loss natural semi-natural habitat. There is, however, a concern that can be ecological traps for pollinators as might attracted habitat where there is risk they are killed traffic. Therefore, we investigated combined effects traffic intensity flowering diversity in on mortality behaviour bumblebee queens. The probability an observed queen was dead...
Species range shifts associated with environmental change or biological invasions are increasingly important study areas. However, quantifying expansion rates may be heavily influenced by methodology and/or sampling bias. We compared rate estimates of Roesel's bush-cricket (Metrioptera roeselii, Hagenbach 1822), a nonnative species currently expanding its in south-central Sweden, from statistic models based on distance measures (mean, median, 95(th) gamma quantile, marginal mean, maximum,...
Abstract Newly founded isolated populations need to overcome detrimental effects of low genetic diversity. The establishment success a population may therefore depend on various mechanisms such as assortative mating, purging deleterious alleles, creation new mutations and/or repeated inflow genotypes reduce the inbreeding and further loss variation. We compared level variation in introduced an insect species ( M etrioptera roeselii ) far beyond its natural distribution with levels found...
This study evaluated diets including whole or peeled (legs removed) crickets ( Teleogryllus testaceus ) in terms of diet digestibility, growth and nitrogen retention, using pigs as an animal model. The experiment included three iso-nitrogenous (18.4% crude protein) either cricket meal (WC), body removed, BC) fish (control) the main protein source. Castrated male piglets (n=21, 30-45 days) with initial weight 13.0±0.3 kg were allocated to one dietary treatments (7 piglets/treatment) a fixed...
Insects generally have high reproductive rates leading to rapid population growth and local densities; ideal conditions for disease epidemics. The parasites diseases that naturally regulate wild insect populations can also impact when these insects are produced commercially, on farms. While human or animal consumption often reared under density conditions, very little is known about the microbes associated with insects, particularly those pathogenic potential. In this study we used both...
Floral resource quantity in agricultural landscapes plays a key role the persistence of wild pollinators. An equally important, but less investigated factor is how variation floral availability over time, e.g. pulses, affects pollinator abundances and diversity. Despite potential importance late-season pulses for bumblebee reproduction, few studies have evaluated effects mass-flowering crops on diversity during after crop bloom. We assessed abundances, traits associated with species rarity...
Many bird species show delayed plumage maturation (DPM), retaining sub-adult until after their first breeding season. Most explanations assume that DPM increases fitness over the However, unless birds undergo a full moult before breeding, could also be an adaptation to increase survival previous winter. The winter hypothesis has never been tested owing difficulty of measuring overwinter survival. We experimentally this in North Island robins (Petroica longipes) using closed island population...
Abstract Aim The bush‐cricket Metrioptera roeselii is an example of insect which has expanded its indigenous range beyond expectations based on natural dispersal potential. Understanding how species colonize new areas vital for formulating effective conservation programmes and managing invasive species. aim this research to use mitochondrial sequence microsatellite data delineate the likely origin pathways M. in northern Europe. well‐known ecology detailed colonization make it a very...
As wild harvesting of insects gives way to mass rearing, there is an urgent need develop expertise and methods in insect animal husbandry facility design. In order advance the science production this field, comparisons contrasts different rearing facilities currently are likely be beneficial. Here we initiate discussion by suggesting a focus on at two ends scale spectrum (small-scale rearing) that have end products (insects-as-food for other purposes). We suggest organisations with...