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Phylogenetic and proximate mechanisms affect darter (Percidae: Etheostomatinae) community structure
(2015-05)
Understanding the relative influences of biotic and abiotic mechanisms responsible for generating patterns of community diversity remains a fundamental theme in ecology. Although studies have recovered patterns of community ...
Radiation of tribosphenic mammals during the early Late Cretaceous (Turonian) of North America
(2017-12)
Tribosphenic mammals from the medial Cretaceous (encompassing the Cenomanian to the Campanian (~98–80 Ma)) are rare elements of the fauna, typically recovered via bulk sampling and underwater screen washing. Southern Utah ...
Molecular basis of ecdysteroid mediated limb regeneration in the fiddler crab, Uca pugilator
(2014-05)
Regeneration is a biological phenomenon that provides an organism the ability to recapitulate part of embryonic development as an adult. The capacity to regenerate is not limited to any particular group of animals; however, ...
Estimating bird/bat fatality rates and using stable-hydrogen isotopes to assess hoary bat migratory patterns associated with a wind-energy facility in western Oklahoma
(2013)
Offsetting a portion of the energy deficit of the United States with emission-free, renewable energy is driving a rapid increase in the number of wind-power installations across the country. Although wind energy has ...
Aversive learning effect on odor coding in rat's piriform cortex
(2011)
Olfaction, a sense for detecting and discriminating chemical molecules in the environment, is critical for animal survival, reproduction and other adaptive behaviors. The olfactory system is organized in three major stations ...
Ornamental nestling mouth coloration and parental care in house sparrows
(2010)
Dependent offspring across taxonomically-diverse lineages use behavioral, vocal, chemical, and morphological traits to attract parental care. Such offspring solicitations are often hypothesized to evolve as a means of ...
Social aggression mediated via kin selection and ecological competition in the Amazon molly, Poecilia formosa
(2015-05)
The maintenance of sexual reproduction is still a largely unresolved question in evolutionary biology, and one of the most puzzling aspects of this is the co-existence of sexual and asexual species. This often leads to ...
THE ALAN SHEPARD (SHEP) GENE REGULATES NEURONAL REMODELING DURING METAMORPHOSIS
(2014)
Peptidergic neurons are a group of neuronal cells that synthesize and secrete peptides to regulate a variety of biological processes. To identify genes controlling the development and function of peptidergic neurons, our ...
TREES AS ECOLOGICAL TEMPLATES FOR TROPICAL LITTER ARTHROPOD COMMUNITIES
(2012)
My dissertation spans five chapters on diverse topics on the ecology and taxonomy of ants in tropical regions. In Chapter 1, I explored if tree species identity explained litter arthropod biodiversity. In Chapter 2, I ...
The Spatial Distribution of, and Upland Impacts on, Playa Wetland Invertebrates
(2015)
Playa wetlands are a type of temporary wetland that are numerous in the Great Plains of the United States. Playa wetlands offer a unique habitat within semiarid grassland ecosystems. My research on the invertebrates of ...