A5043792020- Forest Insect Ecology and Management
- Plant and animal studies
- Ecology and Vegetation Dynamics Studies
- Insect and Pesticide Research
- Insect behavior and control techniques
- Insect-Plant Interactions and Control
- Species Distribution and Climate Change
- Meta-analysis and systematic reviews
- Hemiptera Insect Studies
- Forest ecology and management
- Insect and Arachnid Ecology and Behavior
- Statistical Methods in Clinical Trials
- Fire effects on ecosystems
- Forest Ecology and Biodiversity Studies
- Polyamine Metabolism and Applications
- Protist diversity and phylogeny
- Control and Dynamics of Mobile Robots
- Leadership, Courage, and Heroism Studies
- Horticultural and Viticultural Research
- Reliability and Agreement in Measurement
- Fetal and Pediatric Neurological Disorders
- Guidance and Control Systems
- Seedling growth and survival studies
- Birth, Development, and Health
- Wheat and Barley Genetics and Pathology
Scion
2018-2025
University of Auckland
2014-2020
MRC Clinical Trials Unit at UCL
2020
University College London
2020
MRC Biostatistics Unit
2020
University of Cambridge
2020
University of California, Davis
2018
Plant & Food Research
2014
University of Stirling
1977-1979
FLOWERING LOCUS T2 (FT2) is the closest paralog of FT1 flowering gene in temperate grasses. Here we show that overexpression FT2 Brachypodium distachyon and barley results precocious reduced spikelet number, while down-regulation by RNA interference delayed a percentage filled florets. Similarly, truncation mutations homeologs tetraploid wheat (2-4 d) fertility. The ft2 mutants also showed significant increase number spikelets per spike, with longer spike development period potentially...
As part of national biosecurity programs, cargo imports, passenger baggage, and international mail are inspected at ports entry to verify compliance with phytosanitary regulations intercept potentially damaging nonnative species prevent their introduction. Detection organisms during inspections may also provide crucial information about the composition relative arrival rates in invasion pathways that can inform implementation other practices such as quarantines surveillance. In most regions,...
Thousands of insect species have been introduced outside their native ranges, and some them strongly impact ecosystems human societies. Because a large fraction insects feed on or are associated with plants, nonnative plants provide habitat resources for invading insects, thereby facilitating establishment. Furthermore, plant imports represent one the main pathways accidental introductions. Here, we tested hypothesis that invasions precede promote invasions. We found geographical variation...
The 'fruity' attributes of ripe apples (Malus × domestica) arise from our perception a combination volatile ester compounds. Phenotypic variability in production was investigated using segregating population 'Royal Gala' (RG; high production) 'Granny Smith' (GS; low cross, as well transgenic RG plants which expression the alcohol acyl transferase 1 (AAT1) gene reduced. In GS population, 46 quantitative trait loci (QTLs) for esters and alcohols were identified on 15 linkage groups (LGs)....
Abstract Globalization and economic growth are recognized as key drivers of biological invasions. Alien species have become a feature almost every community worldwide, rates new introductions continue to rise the movement people goods accelerates. Insects among most numerous problematic alien organisms, mainly introduced unintentionally with imported cargo or arriving passengers. However, processes occurring prior insect remain poorly understood. We used unique dataset 1,902,392 border...
The geographical exchange of non-native species can be highly asymmetrical, with some world regions donating or receiving more than others. Several hypotheses have been proposed to explain such asymmetries, including differences in propagule pressure, source (invader) pools, environmental features recipient regions, biological traits invaders. We quantified spatiotemporal patterns the insects between Europe, North America, and Australasia, then tested possible explanations for these based on...
Abstract Aim The concept of “island disharmony” has been widely applied to describe the systematic over‐ and under‐representation taxa on islands compared mainland regions. Here, we explore an extension that biological invasions. We compare biogeographical patterns in native non‐native beetle (Coleoptera) assemblages from around world test whether invasions represent a random sample species or some families are more prone invade than others. Location Global. Methods Numbers established ten...
Abstract Aim Lepidoptera is a highly diverse, predominantly herbivorous insect order, with species transported to outside their native range largely facilitated by the global trade of plants and plant‐based goods. Analogous island disharmony, we examine invasion where filtering during invasions increases systematic compositional differences between non‐native assemblages, test whether some families are more successful at establishing in regions than others. Location Hawaii, North America,...
Pinus radiata (radiata pine or Monterey pine) is threatened in its native range California and, at the same time, one of most widely-planted tree species worldwide, especially southern hemisphere. It affected by a wide plant-feeding insects both and regions where it planted as an introduced tree. In addition, there are many invasive that have colonised P. , some cases causing major damage. Here, our objectives were to provide complete up-to-date overview all insect recorded from summarise...
Abstract Aim Invasions of non‐native insects can have substantial impacts on agriculture, forestry, human health and biodiversity with considerable economic environmental consequences. To understand the causes these invasions, it is important to quantify relative influence principal drivers such as international imports climatic effects. Location North America, Chile, Europe, Australia, New Zealand Japan. Time Period 1881–2020. Methods evaluate contributions various factors in explaining...
Insect odorant receptors are heteromeric odorant-gated cation channels comprising a conventional odorant-sensitive tuning receptor (ORx) and highly conserved co-receptor known as Orco. Orco is found only in insects, very little about its structure the mechanism leading to channel activation. In absence of an ORx, forms homomeric that can be activated by synthetic agonist, VUAA1. Drosophila melanogaster (DmelOrco) contains eight cysteine amino acid residues, six which conserved. this study,...
Abstract Assessing species establishment risk is an important task used for informing biosecurity activities aimed at preventing biological invasions. Propagule pressure a major contributor to the probability of invading establishment; however, direct assessment numbers individuals arriving virtually never possible. Inspections conducted borders by officials record counts (or higher‐level taxa) intercepted during inspections, which can be as proxies arrival rates. Such data may therefore...
Abstract Aim The Hemiptera is the fifth‐largest insect order but among non‐native species approximately tied with Coleoptera as most species‐rich (Hemiptera comprise 20% more than in world fauna). This over‐representation may result from high propagule pressure or invasiveness. Here, we assess reasons for this group by analysing geographical, temporal and taxonomic variation numbers of historical invasions. Location Global. Method We assembled lists invasions 12 regions, countries islands...
Abstract The geographical exchange of non-native insects can be highly asymmetrical, with some world regions ‘exporting’ or ‘importing’ more species than others. Several hypotheses have been proposed to explain such asymmetries, including differences in propagule pressure, environmental features recipient regions, biological traits invaders. We tested aspects these the context between North America, Europe, and Australasia. Europe was dominant exporter insect three most this asymmetry...
1. Rapid labelling occurs when myxamoebae of Dictyostelium discoideum strain AX2 are incubated with [1,4-14C]putrescine. Labelling is energy-dependent. 2. The label enters a pool from which rapid exchange extracellular putrescine does not occur, and believed to represent uptake into the cells. 3. concentration-dependence indicates that number systems involved, at least one saturable, Km 9.1 micro M-putrescine. At high concentrations overall process non-saturable. 4. Significant metabolism...
Abstract Aim Biological invasions are a major threat to biodiversity in aquatic and terrestrial habitats. Insects represent an important group of species freshwater habitats, they constitute large proportion non‐native species. However, while many insects known from ecosystems, appear be less represented Comparisons between habitats invader richness relative native scarce, which hinders syntheses invasion processes. Here, we used data three regions on different continents determine whether...
Abstract Propagule pressure is one of the key drivers establishment success non-native species, including insects. However, border interception data, which have potential to act as a proxy for true arrival rates (i.e., propagule pressure) insects into country, are seldom used predict invasions. This can be due limited amount data in some countries, difficulties accessing such and when these available, addressing biases caused by variation probability different taxa policy changes,...