A5047673479- Plant and animal studies
- Insect-Plant Interactions and Control
- Insect behavior and control techniques
- Insect and Arachnid Ecology and Behavior
- Genetic diversity and population structure
- Parasite Biology and Host Interactions
- Ecology and Vegetation Dynamics Studies
- Insect and Pesticide Research
- Species Distribution and Climate Change
- Insect symbiosis and bacterial influences
- Orthoptera Research and Taxonomy
- Lepidoptera: Biology and Taxonomy
- Insect Resistance and Genetics
- Hemiptera Insect Studies
- Insects and Parasite Interactions
- Environmental DNA in Biodiversity Studies
- Forest Insect Ecology and Management
- Biological Control of Invasive Species
- Entomological Studies and Ecology
- Insect Pest Control Strategies
- History and Developments in Astronomy
- Entomopathogenic Microorganisms in Pest Control
- Coleoptera Taxonomy and Distribution
- Plant Virus Research Studies
- Fossil Insects in Amber
University of California, Berkeley
2012-2024
American Museum of Natural History
2020
Museum of Vertebrate Zoology
2017
California Academy of Sciences
2015
University of California System
2005-2009
University College Dublin
2009
Gump South Pacific Research Station
2005-2008
University of Toronto
2007
University of Exeter
2007
University College London
2007
Abstract The rapid expansion of road networks has reduced connectivity among populations flora and fauna. resulting isolation is assumed to increase population extinction rates, in part because the loss genetic diversity. However, there are few cases where diversity been linked directly roads or other barriers. We analysed effects such barriers on 27 Ovis canadensis nelsoni (desert bighorn sheep). used partial Mantel tests, multiple linear regression coalescent simulations infer changes gene...
Natural history museums are unique spaces for interdisciplinary research and educational innovation. Through extensive exhibits public programming by hosting rich communities of amateurs, students, researchers at all stages their careers, they can provide a place-based window to focus on integration science discovery, as well locus community engagement. At the same time, like synthesis radio telescope, when joined together through emerging digital resources, global (the 'Global Museum') is...
Geographic structure of populations is a fundamental component ecology and evolution that combines both demographic genetic processes, such as gene flow migration, drift, selection, population extinction. Recent advances in molecular biology theory have revolutionized the field not only expanded availability data but also facilitated accessibility interpretation current data. These new techniques allow analysis similarity among to be coupled with phylogeography distribution genotypes within...
Male-killing bacteria are widespread in arthropods, and can profoundly alter the reproductive biology of their host species. Here we detail first case complete suppression a male killer. The nymphalid butterfly Hypolimnas bolina is infected with strain bacterium Wolbachia, wBol1, which kills embryos Polynesian populations, but does not do so many areas Southeast Asia, where both males female adults naturally infected, wBol1-infected females produce 1:1 sex ratio. We demonstrate that absence...
Les interactions plantes-hotes, le cycle biologique, la reproduction et communication, dynamique des populations les ennemis naturels sont examines. L'accent est mis sur moyen d'utiliser cicadelles comme modele de biologie
We investigated the selective pressures associated with possession of wings and migration in wing-dimorphic planthoppers (Homoptera: Delphacidae). Both migratory (macropterous) flightless (brachypterous) forms occur. found that levels (% macroptery) field populations decreased significantly as persistence their habitats increased. By using phylogenetically independent contrasts between congeners, we obtained same result, which suggests habitat has influenced common ancestry. Also, there was...
Abstract The olive fly, Bactrocera oleae , is the major pest of olives in most commercial olive‐growing regions worldwide. species abundant Mediterranean basin and has been introduced recently into California Mexico, creating problems for quarantine protection international trade. Here, we use nuclear microsatellite markers mitochondrial sequences to examine history fly range expansion colonization. Sampled populations span current distribution worldwide, including South Central Africa,...
The ratio of males to females in a species is often considered be relatively constant, at least over ecological time. Hamilton noted that the spread "selfish" sex ratio-distorting elements could rapid and produce switch highly biased population ratios. Selection against skewed should promote mutations suppress distortion. We show butterfly Hypolimnas bolina suppression biases occurs extremely fast, with from 100:1 1:1 occurring fewer than 10 generations.
Dispersal is considered a vital life history characteristic for insects exploiting temporary habitats, and theorists have often hypothesized an inverse relationship between dispersal capability habitat persistence. Most often, this hypothesis has been tested using interspecific comparisons of qualitative estimates Consequently, most assessments failed to control possible phylogenetic nonindependence they also lack quantitative rigor. We capitalized on existing intraspecific variation in the...
The flora and fauna of oceanic islands have inspired research since the early scientific explorations. Islands can be considered 'nature's test tubes'- simple systems with multiple replicates. Our has used simplicity island to understand ecological community dynamics compare properties communities those in more complex mainland systems. Here, we present three topics: (i) current patterns biodiversity on isolated Pacific; (ii) disturbance invasion islands; (iii) future trajectories inferred...
The interaction between the Blue Moon butterfly, Hypolimnas bolina, and Wolbachia has attracted interest because of high prevalence male-killing achieved within species, ecological consequences this prevalence, intensity selection on host to suppress infection, presence multiple infections inducing different phenotypes. We examined diversity in co-inherited marker, mtDNA, partitioning individuals infection status, as a means investigate population biology evolutionary history infections.Part...
Plant biosecurity is increasingly challenged by emerging crop pests. The spider mite Tetranychus evansi has recently emerged as a new threat to solanaceous crops in Africa and the Mediterranean basin, with invasions characterized high reproductive output an ability withstand wide range of temperatures. Mitochondrial (868 bp COI) nuclear (1,137 ITS) loci were analyzed T. samples spanning current geographical distribution study earliest stages invasive process. two sets markers separate into...
The whitefly Bemisia tabaci sibling species (sibsp.) group comprises morphologically indiscernible lineages of well-known exemplars referred to as biotypes. It is distributed throughout tropical and subtropical latitudes includes the contemporary invasive haplotypes, termed B Q. Several well-studied B. biotypes exhibit ecological biological diversity, however, most members are poorly studied or completely uncharacterized. Genetic studies have revealed substantial diversity within based on a...
Opinions about the value of biological control are often extreme. Colloquially, most refers to classical control, in which one species is introduced from another region pests such as arthropod herbivores agricultural systems, or weeds managed and natural systems.1 As such, has potential be a low-cost, chemical free, means pests. Numerous programs have been unqualified successes (Bellows 2001), cacti Australia with moth Cactoblastis cactorum (Raghu Walton 2007), cottony-cushion scale (Icerya...