A5102926039- Plant and animal studies
- Animal Behavior and Reproduction
- Insect symbiosis and bacterial influences
- Insect and Arachnid Ecology and Behavior
- Fish Ecology and Management Studies
- Insect Utilization and Effects
- Insect and Pesticide Research
- Genetic diversity and population structure
- Reproductive biology and impacts on aquatic species
- Legume Nitrogen Fixing Symbiosis
- Plant-Microbe Interactions and Immunity
- Space Satellite Systems and Control
- Plant Parasitism and Resistance
- Plant Stress Responses and Tolerance
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Spacecraft Dynamics and Control
- Evolution and Genetic Dynamics
- Insects and Parasite Interactions
- Amphibian and Reptile Biology
- Astro and Planetary Science
The University of Texas at Austin
2011-2021
Google (United States)
2011
University of Kentucky
2005-2007
We develop a method to artificially select for rhizosphere microbiomes that confer salt tolerance the model grass Brachypodium distachyon grown under sodium stress or aluminum stress. In controlled greenhouse environment, we differentially propagated between plants of nonevolving, highly inbred plant population; therefore, only evolved in our experiment, but did not evolve parallel. To maximize microbiome perpetuation when transplanting and, thus, response selection, improved earlier methods...
Leafcutter ants propagate co-evolving fungi for food. The nearly 50 species of leafcutter (Atta, Acromyrmex) range from Argentina to the United States, with greatest diversity in southern South America. We elucidate biogeography cultivated by using DNA sequence and microsatellite-marker analyses 474 cultivars collected across range. Fungal belong two clades (Clade-A Clade-B). dominant widespread Clade-A form three genotype clusters, their relative prevalence corresponding America, northern...
Abstract We develop a method to artificially select for rhizosphere microbiomes that confer salt-tolerance the model grass Brachypodium distachyon . differentially propagate within background of non-evolving, highly-inbred plant population, and therefore only evolve in our experiment, but not plants. To optimize methods, we conceptualize artificial microbiome-selection as special case indirect selection : do measure microbiome properties directly, use host performance (e.g., biomass; seed...
Sperm competition is often envisaged as a raffle where differences in sperm quality "load" the favor of male with higher sperm. quality, however, complex trait, and effects its various components on outcome are likely to depend upon their role transport, storage, fertilization. Here, I use artificial insemination assess relationships between viability, velocity, storage siring success swordtail Xiphophorus nigrensis (Teleostei: Poeciliidae), an internally fertilized fish alternative...
The gut microbiome of insects plays an important role in their ecology and evolution, participating nutrient acquisition, immunity, behavior. Microbial community structure within the is heavily influenced by differences among regions morphology physiology, which determine niches available for microbes to colonize. We present a high-resolution analysis Mormon cricket Anabrus simplex, insect known its periodic outbreaks western United States nutrition-dependent mating system. was dominated 11...
Species with alternative reproductive strategies are characterized by discrete differences among males in suites of traits related to competition for fertilizations. Models predict sneaker should allocate more resources their ejaculates because they experience sperm frequently and often occupy a disfavoured 'role' owing subordinance intramale female preferences larger males. We examined whether number quality differed between male the internally fertilized fish Xiphophorus nigrensis explored...
In species with alternative reproductive tactics, males that sneak copulations often have larger, higher quality ejaculates relative to defend females or nest sites. Ejaculate traits can, however, exhibit substantial phenotypic plasticity depending on a male's mating role in sperm competition, which may depend the tactic of his competitor. We tested whether exposure different tactics affected number and swordtail Xipophorus nigrensis, small large court females. Sperm swimming speed was when...
To explore landscape genomics at the range limit of an obligate mutualism, we use genotyping-by-sequencing (ddRADseq) to quantify population structure and effect host-symbiont interactions between northernmost fungus-farming leafcutter ant Atta texana its two main types cultivated fungus. Genome-wide differentiation ants associated with either fungal is same order magnitude as temperature precipitation across ant's entire range, suggesting that specific ant-fungus genome-genome combinations...
Summary Mating is a ubiquitous social interaction with the potential to influence microbiome by facilitating transmission, modifying host physiology, and in species where males donate nuptial gifts females, altering diet. We manipulated mating gift consumption two insects that differ size, Mormon cricket Anabrus simplex decorated Gryllodes sigillatus , expectation larger are more likely affect gut microbiome. Surprisingly, mating, but not consumption, affected structure of bacterial...
This paper discusses the adaptation and implementation of a modifled two-level corrections process as onboard targeting algorithm for Trans-Earth Injection phase Crew Exploration Vehicle. Unlike earlier Apollo missions to Moon, Project Orion intends land near polar regions, task that can lead substantial plane change maneuver prior Earth return. To reduce fuel expenditure associated with this change, three-maneuver sequence is employed during return phase. First, initial raises apolune at...
Abstract To explore landscape genomics at the range limit of an obligate mutualism, we used genotyping-by-sequencing (ddRADseq) to quantify population structure and effect hostsymbiont interactions between northernmost fungus-farming leafcutter ant Atta texana its two main types cultivated fungus. At local scales, genome-wide differentiation ants associated with either fungal is greater than abiotic factors temperature precipitation, suggesting that specific ant-fungus genome-genome...
SUMMARY The gut microbiome of insects plays an important role in their ecology and evolution, participating nutrient acquisition, immunity, behavior. Microbial community structure within the is heavily influenced by differences among regions morphology physiology, which determine niches available for microbes to colonize. We present a high-resolution analysis Mormon cricket Anabrus simplex, insect known its periodic outbreaks western United States nutrition-dependent mating system. was...
ABSTRACT Mating is a ubiquitous social interaction with the potential to influence microbiome by facilitating transmission, modifying host physiology, and in species where males donate nuptial gifts females, altering diet. We manipulated mating gift consumption two insects that differ size, Mormon cricket Anabrus simplex decorated Gryllodes sigillatus , expectation larger are more likely affect gut microbiome. Surprisingly, mating, but not consumption, affected bacterial community structure,...