A5006981045- Insect-Plant Interactions and Control
- Genetic diversity and population structure
- Forest Insect Ecology and Management
- Genetic Mapping and Diversity in Plants and Animals
- Forest ecology and management
- Species Distribution and Climate Change
- Lepidoptera: Biology and Taxonomy
- Hemiptera Insect Studies
- Genetic and phenotypic traits in livestock
- Chromosomal and Genetic Variations
- Phytoplasmas and Hemiptera pathogens
- Ecology and Vegetation Dynamics Studies
- Entomological Studies and Ecology
- Coleoptera Taxonomy and Distribution
- Plant Virus Research Studies
- Bioenergy crop production and management
- Forest Management and Policy
- Agricultural pest management studies
- Plant and animal studies
- Research on scale insects
- Hymenoptera taxonomy and phylogeny
- Insect Resistance and Genetics
- Tree-ring climate responses
- Scarabaeidae Beetle Taxonomy and Biogeography
- Coleoptera: Cerambycidae studies
University of California, Davis
2020-2024
Virginia Commonwealth University
2017-2023
Northern Arizona University
2023
Texas Tech University
2014-2015
Indian Agricultural Research Institute
1957-1974
Voluntary Health Association Of India
1967
British Museum
1949
The origins of maize were the topic vigorous debate for nearly a century, but neither current genetic model nor earlier archaeological models account totality available data, and recent work has highlighted potential contribution wild relative, Zea mays ssp. mexicana . Our population analysis reveals that origin modern can be traced to an admixture between ancient in highlands Mexico some 4000 years after domestication began. We show variation is key component diversity, both at individual...
The woolly mammoth (Mammuthus primigenius) possessed a thick coat and other cold-adaptive traits that enabled survival in harsh Arctic environments. Current de-extinction efforts focus on genetically modifying the closely related Asian elephant to express traits. In this study, we establish multiplex-edited mouse model with modifications genes associated hair morphology lipid metabolism, enabling insights into involved developing cold tolerance. Our optimized workflows achieved high editing...
Abstract Interactions between extrinsic factors, such as disruptive selection and intrinsic genetic incompatibilities among loci, often contribute to the maintenance of species boundaries. The relative roles these factors in establishment reproductive isolation can be examined using pairs characterized by gene flow throughout their divergence history. We investigated process speciation boundaries Pinus strobiformis flexilis . Utilizing ecological niche modelling, demographic modelling...
Species distribution models (SDMs) in river ecosystems can incorporate climate information by using air temperature and precipitation as surrogate measures of instream conditions or independent water hydrology to link habitat. The latter approach is preferable but constrained the logistical burden developing models. We therefore assessed whether regional scale, freshwater SDM predictions are fundamentally different when data versus used covariates. Maximum entropy (MaxEnt) SDMs were built...
Abstract Extant conifer species may be susceptible to rapid environmental change owing their long generation times, but could also resilient due high levels of standing genetic diversity. Hybridisation between closely related can increase diversity and generate novel allelic combinations capable fuelling adaptive evolution. Our study unravelled the architecture evolution in a hybrid zone formed Pinus strobiformis P. flexilis . Using multifaceted approach emphasising spatial patterns linkage...
A lack of optimal gene combinations, as well low levels genetic diversity, is often associated with the formation species range margins. Conservation efforts rely on predictive modelling using abiotic variables and assessments diversity to determine target populations for controlled breeding, germplasm conservation assisted migration. Biotic factors such interspecific competition hybridization, however, are largely ignored, despite their prevalence across diverse taxa role key evolutionary...
Protection against freeze damage during the growing season influences northern range limits of plants. Freeze tolerance and avoidance are two major resistance strategies. Winter survival strategies have been extensively studied in perennials, but few addressed them their genetic basis season. We examined intraspecific phenotypic variation Populus balsamifera across latitude To investigate molecular this variation, we surveyed nucleotide diversity patterns gene expression poplar C-repeat...
Abstract Despite its global importance as a crop with broad economic, dietary, and cultural importance, the origins of maize closest wild relatives remained topic vigorous debate for nearly century. Molecular analyses ultimately concluded that was domesticated once from common ancestor extant relative, lowland grass Zea mays ssp. parviglumis . But neither current genetic model nor earlier models based on archaeological data account totality available data, recent work has highlighted...
We implemented multilocus selection in a spatially-explicit, individual-based framework that enables multivariate environmental gradients to drive many loci as new module for the landscape genetics programs, CDPOP and CDMetaPOP. Our simulates using linear additive model, providing flexible platform evaluate wide range of genotype-environment associations. Importantly, allows simulation any number under influence variables. validated with simulations Wright-Fisher assumptions. then evaluated...
The phenotype of trees is determined by the relationships and interactions among genetic environmental influences. Understanding patterns processes that are responsible for phenotypic variation facilitated studying between environment many individuals across broad ecological climatic gradients. We used Pinus strobiformis, which has a wide latitudinal distribution, as model species to: (a) estimate relative importance different factors in predicting these morphological traits (b) characterize...
Abstract Two genera of mites, collected from castor leaves and malformed portions mango trees associated with tetranychid eriophyid mites respectively are reported in this paper. Indoseius ricini Indodromus meerutensis described as new species.
Abstract Recognition of the important role transposable elements (TEs) in eukaryotic genomes quickly led to a burgeoning literature modeling and estimating effects selection on TEs. Much empirical work has focused analyzing site frequency spectrum (SFS) But TE evolution differs from standard models number ways that can impact power interpretation SFS. For example, rather than mutating under clock-like model, transposition often occurs bursts which inflate particular categories compared with...
Abstract Fourteen new species of the tribe Erythroneurini are described here under seven genera. These Spatulostylus variegatus, sp. nov., S. erythromaculatus, palniensis, Ratburella unipunctata, Indianella indraprasthana, I. tamaricis, delhiana, Cassianeura sexmaculata. Zyginopsis abundans, Z. erythropunctatus, basipunctatus, hindusthanicus, Kodaikanalia primulae, nov. and Erythroneuropsis indicus,
Abstract. Sixteen species of the phytoseiid genus Amblyseius Berlese are known from India, including seven new described here, namely, A. bambusae, coccosocius, eucalypti, ipomoeae. lablabi, mangiferae and sacchari. A key is provided to all species.
Abstract Six species are described here under the tribe Dikraneurini i.e. Togaratettix serratus Matsumura, Murreeana duttai, sp. nov., Pusaneura signata, Duttaella punjabensis, Pusatettix blpunctatus, and Basuaneura kalimpongensis, nov. Out of these first one was so far recorded from Japan only. Thus this is a new record for India. This redescribed since original description found incomplete. Part thesis senior author approved award Ph. D. degree in 1969 Post Graduate School Indian...
Abstract Ten new species of Typhlocybini belonging to seven different genera are described in detail here. These Empoanara dravidana, sp. nov., Sujitettix delhiensis, S. aryavartha, nov,, Akotettix centromaculata, Amrasca furcastylus, Kybos theacola, K. sabourensis, Lankasca ficianelia, Pruthius erythromaculatus, and P. varians, nov.