2 edition of Distribution of genetic diversity at local to continental scales in European insects found in the catalog.
Distribution of genetic diversity at local to continental scales in European insects
Bo-Chi Geoffrey Lai
Thesis (Ph.D.) - University of Birmingham, School of Biosciences, 2003.
|Statement||by Bo-Chi Geoffrey Lai.|
|The Physical Object|
|Pagination||193 p. :|
|Number of Pages||193|
The important economic and conservation issues associated with wolf dynamics have stressed the need for programmes of genetic monitoring in most European countries. Modern patterns of diversity have thus received considerable attention [15,17,18], some of them consistent with local genetic bottlenecks. Genetic Diversity. With ISSR, a total of 78 bands were scored with an average of bands per primer, and 45 polymorphic bands were obtained. At .
In the Michel Lab, we focus on genetic variation and mechanisms that allow to interact with their environment. This research includes searching for genes under natural selection to enhance adaptation of insect pests—particularly to agricultural crops—as well as estimating genetic diversity and structure that suggest the decline of important insect species. However, most stand-scale studies involved native insects, and there is comparatively little information on invasions by non-native insects. Two studies in Europe have shown negative relationships between tree species richness and the abundance of invasive tree-feeding insects at the plot or stand scale (Jactel et al. ; Guyot et al. ).
A combination of selective and neutral evolutionary forces shape patterns of genetic diversity in nature. Among the insects, most previous analyses of the roles of drift and selection in shaping variation across the genome have focused on the genus Drosophila. A more complete understanding of these forces will come from analyzing other taxa that differ in population . The genetic history of Europe since the Upper Paleolithic is inseparable from that of wider Western ab years ago (50 ka) a basal West Eurasian lineage had emerged (alongside a separate East Asian lineage) out of the undifferentiated "non-African" lineage of 70 ka. Both basal East and West Eurasians acquired Neanderthal admixture in Europe and Asia.
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The insects are probably the most hyperdiverse and economically important metazoans on the planet, but there is no consensus on the best way to model the dimensions of their diversity at multiple spatial scales, and the huge amount of information involved hinders data synthesis and the revelation of ‘patterns of nature’.Cited by: The caterpillar fungus Ophiocordyceps sinensis is one of the most valuable medicinal fungi in the world, and it requires host insects in family Hepialidae (Lepidoptera) to complete its life cycle.
However, the genetic diversity and phylogeographic structures of the host insects remain to be explored. We analyzed the genetic diversity and temporal and spatial distribution patterns of genetic Cited by: carcass-associated insects were described from case studies in 30 countries with 24 dead body types.
• The richness and occurrence of carcass-associated insects considerably differed among countries, habitats, and carcass types. • There may be differences between the insect assemblages associated with human and non-human : Yuno Do, Seung Yeon Lee, Ki Wha Chung, Tae-Young Moon.
Insects, an international, peer-reviewed Open Access journal. Dear Colleagues, In population genetics, a discipline that investigates genetic differences in populations, statistical modelling is used to estimate a wide range of parameters to compare populations in temporal and spatial scales.
A general explanation for the high genetic diversity and the widespread distribution of common haplotypes in most populations may be an adaptation of E. balteatus to a broad range of environmental.
To evaluate the diversity and distribution of scale insects in China, we compiled geographic distribution data from museum specimens and published literature and plotted these data using a Geographical Information System. Distribution centers of scale insects were identified by counting the number of species in each grid cell.
Mapping at large spatial scales, continental and global, aims to portray distribution, levels of endemism, and threats to insects, but must be based on a sound and reliable database.
This continental-scale approach also identifies priority areas for insect conservation, and level of coincidence with biodiversity hotspots. This study aimed to describe the genetic structure and diversity among European gypsy moth populations.
Analysis of about individuals using a partial region of the mitochondrial COI gene, L. dispar was characterized by low genetic diversity, limited population structure, and strong evidence that all extant haplogroups arose via a single. For prokaryotes, diversity is often high in pastures and agricultural fields, which generally have low animal and plant diversity at the local to regional sc50,51,52, enhances parasitoid diversity at the local and landscape scales.
Journal of Applied Ecology – Jonason D, Andersson GK, Öckinger E, et al. () Assessing the. Genetic differentiation was evaluated at local (scales through a set of analyses, and genetic diversity was evaluated at all scale levels and between fringe and dwarf physiognomic types. Rhizophora mangle exhibited a high genetic structure at both scales with high genetic diversity.
Table 2 provides a breakdown of gene-diversity estimates for each of the 15 individual populations. Again, the individual African populations tend to have the highest levels of diversity for most systems. For the Y STRPs, two European populations (northern Europeans and Finns) have strikingly low levels of diversity, especially in comparison with those in the other European populations.
At continental scales, genetic diversity is probably influenced less by juvenile survival when gene flow is high. This might be especially true in the nonnative range where there has been a shorter history of local adaptation (33) and multiple human-mediated introductions (the human activity pathway) (Fig.
Tree genetic diversity is among the most important factors determining the sustainability of forest ecosystems. The main aim of the present study was to track possible changes in genetic diversity of regenerating populations of Norway spruce (Picea abies (L.) H. Karst) and Scots pine (Pinus sylvestris L.) in areas subjected either to a natural disturbance (windthrows and subsequent clear.
Sugarcane is one of the most valuable crops in the world. Native and exotic Lepidopteran stemborers significantly limit sugarcane production. However, the identity and genetic diversity of stemborers infesting sugarcane in Malawi is unknown.
The main objectives for this study were to identify and determine genetic diversity in stemborers infesting sugarcane in Malawi. DNA barcode reference library for Iberian butterflies enables a continental-scale preview of potential cryptic diversity Skip to main content Thank you for visiting We examined populations at a range of geographic scales using allozyme electrophoresis to look for evidence of gene flow and differences in genetic diversity among populations.
Nationally, our F ST value was but between population groups within the suspected colonisation range of the butterfly (ca. 20 km), F ST values were not.
All National Insect Week Collection articles are FREE to access. Effects of the removal or reduction in density of the malaria mosquito, Anopheles gambiae s.l., on interacting predators and competitors in local ecosystems C.
Collins, J. Bonds, M. Quinlan, J. Mumford. Genetic control methods for anopheline mosquitoes may reduce their populations without direct effects on.
Some of the most striking and extreme consequences of rapid, long-distance aerial dispersal involve pathogens of crop plants. Long-distance dispersal of fungal spores by the wind can spread plant diseases across and even between continents and reestablish diseases in areas where host plants are seasonally absent.
For such epidemics to occur, hosts that are susceptible to the same. Here we compare genome-wide genetic diversity across 38 species of European butterflies (Papilionoidea), a group that shows little variation in reproductive strategy.
Humans and Ecological Change. Humans are altering the modern environment in several ways that affect biodiversity. Most noteworthy among these are habitat destruction and alteration, changes to global, and consequently local climates, pollution (including nutrient enrichment), and the introduction of species to areas from which they were previously absent and in which they subsequently.Introduction.
Range expansion of exotic species can result from either evolutionary adaptation or generalism and plasticity often associated with a change in c diversity is required for evolutionary adaptation, but a reduction in genetic diversity in invasive populations compared to populations in their native range is expected and often observed –.The genetic diversity segregating within a species is a central quantity; it determines its evolutionary potential, and is, in turn, the outcome of its selective and demographic past.