A5036067996- Genetic diversity and population structure
- Plant and animal studies
- Trypanosoma species research and implications
- Species Distribution and Climate Change
- Insect and Arachnid Ecology and Behavior
- Turtle Biology and Conservation
- Insect symbiosis and bacterial influences
- Evolution and Genetic Dynamics
- Mosquito-borne diseases and control
- Identification and Quantification in Food
- Wildlife Ecology and Conservation
- Parasite Biology and Host Interactions
- Animal Ecology and Behavior Studies
- Marine Biology and Ecology Research
- Ecology and Vegetation Dynamics Studies
- Environmental DNA in Biodiversity Studies
- Wildlife-Road Interactions and Conservation
- Freshwater macroinvertebrate diversity and ecology
- Insect and Pesticide Research
- Genomics and Phylogenetic Studies
- Forest Ecology and Biodiversity Studies
- Fish Ecology and Management Studies
- Parasites and Host Interactions
- Crustacean biology and ecology
- Oil Palm Production and Sustainability
Uppsala University
2021-2024
Southern Research Station
2021-2024
US Forest Service
2023
University of Mississippi
2014-2021
Yale University
2007-2014
Dire wolves (Aenocyon dirus) are extinct predators of Pleistocene North America. Although phenotypically similar to living (Canis lupus), dire have yet be placed confidently in the canid family tree. We generated 3.4x and 12.8x paleogenomes from two well-preserved dating > 13,000 72,000 years ago, estimated consensus species trees for these 10 species. Our results revealed that ~2/3 wolf ancestry is derived a lineage sister clade comprising gray wolf, coyote, dhole, remaining ~1/3 near...
The negative impact of urbanization on biodiversity can be buffered by blue (e.g., rivers, ponds) and green parks, forests) spaces. However, to prevent loss reduce the risk local extinctions, spaces need connected corridors, so that organisms may disperse between sites. Landscape connectivity affects community composition metacommunity dynamics facilitating dispersal. goal this study was test relative roles pond environmental properties, spatial structure, functional landscape...
Abstract Although many classic radiations on islands are thought to be the result of repeated lineage splitting, role past fusion is rarely known because during these events, purebreds rapidly replaced by a swarm admixed individuals. Here, we capture in action Galápagos giant tortoise species, Chelonoidis becki , from Wolf Volcano (Isabela Island). The long generation time tortoises and dense sampling (841 individuals) genetic demographic data were integral detecting characterizing this...
Abstract Throughout the developing world, urban centres with sprawling slum settlements are rapidly expanding and invading previously forested ecosystems. Slum communities characterized by untended refuse, open sewers overgrown vegetation, which promote rodent infestation. N orway rats ( R attus norvegicus ) reservoirs for epidemic transmission of many zoonotic pathogens public health importance. Understanding population ecology . is essential to formulate effective control strategies, as...
Background Glossina fuscipes fuscipes, a riverine species of tsetse, is the main vector both human and animal trypanosomiasis in Uganda. Successful implementation control will require establishing an appropriate geographical scale for these activities. Population genetics can help to resolve this issue by characterizing extent linkage among apparently isolated groups tsetse. Methodology/Principal Findings We conducted genetic analyses on mitochondrial microsatellite data accumulated from...
Tsetse flies (Diptera: Glossinidae) are vectors for African trypanosomes (Euglenozoa: kinetoplastida), protozoan parasites that cause trypanosomiasis in humans (HAT) and nagana livestock. In addition to trypanosomes, two symbiotic bacteria (Wigglesworthia glossinidia Sodalis glossinidius) parasitic microbes, Wolbachia a salivary gland hypertrophy virus (SGHV), have been described tsetse. Here we determined the prevalence of coinfection dynamics between Wolbachia, SGHV Glossina fuscipes...
Abstract This article documents the addition of 238 microsatellite marker loci to Molecular Ecology Resources Database. Loci were developed for following species: Alytes dickhilleni , Arapaima gigas Austropotamobius italicus Blumeria graminis f. sp. tritici Cobitis lutheri Dendroctonus ponderosae Glossina morsitans Haplophilus subterraneus Kirengeshoma palmata Lysimachia japonica Macrolophus pygmaeus Microtus cabrerae Mytilus galloprovinciali s, Pallisentis ( Neosentis ) celatus Pulmonaria...
Tsetse flies (Glossina spp.) are vectors of parasitic trypanosomes, which cause human (HAT) and animal African trypanosomiasis (AAT) in sub-Saharan Africa. In Uganda, Glossina fuscipes (Gff) is the main vector HAT, where it transmits Gambiense disease northwest Rhodesiense central, southeast western regions. Endosymbionts can influence transmission efficiency parasites through their insect via conferring a protective effect against parasite. It known that bacterium Spiroplasma capable...
Galápagos tortoises represent the only surviving lineage of giant that exhibit two different types shell morphology. The taxonomy was initially based mainly on diagnostic morphological characters shell, but has been clarified by molecular studies indicating most islands harbor monophyletic lineages, with exception Isabela and Santa Cruz. On Cruz there is strong genetic differentiation between tortoise populations (Cerro Fatal La Reserva) exhibiting domed Here we integrate nuclear...
Glossina pallidipes has been implicated in the spread of sleeping sickness from southeastern Uganda into Kenya. Recent studies indicated resurgence G. Lambwe Valley and after what were deemed to be effective control efforts. It is unknown whether belt extends western We investigated genetic diversity population structure Kenya.AMOVA that differences among sampling sites explained a significant proportion variation. Principal component analysis Bayesian assignment microsatellite genotypes...
Abstract This article documents the addition of 153 microsatellite marker loci to Molecular Ecology Resources Database. Loci were developed for following species: B rassica oleracea, rycon amazonicus, D imorphandra wilsonii, E upallasella percnurus, H elleborus foetidus, I pomoea purpurea, P hrynops geoffroanus, rochilodus argenteus, yura sp. , S ylvia atricapilla, T eratosphaeria suttonii, rialeurodes vaporariorum and rypanosoma brucei . These cross‐tested on coccicinea, cuprea,...
Abstract Long‐term population history can influence the genetic effects of recent bottlenecks. Therefore, for threatened or endangered species, an understanding past is relevant when formulating conservation strategies. Levels variation at neutral markers have been useful estimating local effective sizes ( N e ) and inferring whether increased decreased over time. Furthermore, analyses genotypic, allelic frequency, phylogenetic information potentially be used to separate historical from...
Abstract Secondary contact between long isolated populations has several possible outcomes. These include the strengthening of preexisting reproductive isolating mechanisms via reinforcement, emergence a hybrid lineage that is distinct from its extant parental lineages and which occupies spatially restricted zone them, or complete merging two such are no longer (“lineage fusion” herein). The latter scenario rarely been explicitly considered in single‐species comparative phylogeographic...
Abstract Biodiversity is heavily influenced by ongoing climate change, which often results in species undergoing range shifts, either poleward or uphill. Range shifts can occur provided suitable habitats exist within reach. However, latitudinal might be limited additional abiotic biotic constraints, such as increased seasonality, photoperiod patterns, and interactions. To gain insight into the dynamics of insect at high latitudes, we constructed ecological niche models (ENMs) for 57 Odonata...
Glossina fuscipes, a riverine species of tsetse, is the major vector human African trypanosomiasis (HAT) in sub-Saharan Africa. Understanding population dynamics, and specifically temporal stability, G. fuscipes will be important for informing control activities. We evaluated genetic changes over time seven populations subspecies f. distributed across southeastern Uganda, including zone contact between two historically isolated lineages. A total 667 tsetse flies were genotyped at 16...
Abstract Ex situ conservation strategies may be substantially informed by genetic data, and yet only recently have such approaches been used to facilitate captive population management of endangered species. The Galápagos tortoise Geochelone nigra is an species that has benefited greatly from the application molecular but remains vulnerable throughout its range. geographic evolutionary origins 98 tortoises in private collections zoos on three continents were identified using mitochondrial...
Glossina fuscipes is the primary vector of trypanosomiasis in humans and livestock Uganda. The Lake Victoria basin has been targeted for tsetse eradication using a rolling carpet initiative, from west to east, with four operational blocks (3 Uganda 1 Kenya), under Pan-African Tsetse Trypanosomiasis Eradication Campaign (PATTEC). We screened flies three Ugandan PATTEC genetic diversity at 15 microsatellite loci continental offshore populations provide empirical data support this initiative....
Tsetse flies ( Glossina spp.) are the sole vectors of Trypanosoma brucei —the agent human (HAT) and animal (AAT) trypanosomiasis. fuscipes Gff ) is main vector species in Uganda—the only country where two forms HAT disease rhodesiense gambiense occur, with limited to northwest. populations cluster three genetically distinct groups northern, southern, western Uganda, respectively, a contact zone present central Uganda. Understanding dynamics this epidemiologically important as merger diseases...
Reticulitermes termites play key roles in dead wood decomposition and nutrient cycling forests. They also damage man-made structures, resulting considerable economic loss. In the eastern United States, five species (R. flavipes, R. virginicus, nelsonae, hageni malletei) have overlapping ranges are difficult to distinguish morphologically. Here we present a molecular tool for identification. It is based on polymerase chain reaction (PCR) amplification of section mitochondrial cytochrome...
Abstract Vector control is an effective strategy for reducing vector‐borne disease transmission, but requires knowledge of vector habitat use and dispersal patterns. Our goal was to improve this the tsetse species Glossina pallidipes , a human animal African trypanosomiasis, which are diseases that pose serious health socioeconomic burdens across sub‐Saharan Africa. We used random forest regression (i) build integrate models G . suitability genetic connectivity Kenya northern Tanzania (ii)...
Understanding the mechanisms that enforce, maintain or reverse process of speciation is an important challenge in evolutionary biology. This study investigates patterns divergence and discusses processes form divergent lineages tsetse fly Glossina fuscipes Uganda. We sampled 251 flies from 18 sites spanning known genetic four admixture zones between them. apply population genomics, hybrid zone approximate Bayesian computation to analysis three types markers: 55,267 double-digest restriction...