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Now showing items 61-70 of 161
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 ...
A morphological study of larval forms of North American species of Stenelmis (Coleoptera : Elmidae)
(1980)
Fourteen species of Stenelmis from North America were studied: S. beameri, S. bicarinata, S. crenata, S. exigua, S. gammoni, S. grossa, S. mera, S. parva, S. sandersoni, S. sexlineata, S. vittipennis, and three undescribed ...
Plumage coloration and dominance behavior in three species of sparrows of the genus Zonotrichia.
(1983)
I investigated the general hypothesis that plumage variability in winter flocking birds acts as a status signal using three species: Harris' sparrow (Zonotrichia querula), white-crowned sparrow (Z. leucophrys) and ...
An integrative approach to understanding mussel community structure: Linking biodiversity, environmental context and physiology.
(2007)
The focus of my third chapter is an integration of the physiology information collected in chapter two to address how species dominance of two distinct thermal guilds (thermally-tolerant and thermally-sensitive) influences ...
Thermoregulation of the box turtles Terrapene carolina and Terrapene ornata.
(2001)
Terrapene ornata and T. carolina are closely related box turtles that live in different habitats: grasslands and desert edges, and forested areas, respectively. Considering these species' habitat selection, I predicted ...
Olfactory bulb coding and odor discrimination.
(2005)
Olfactory system second-order neurons, mitral-tufted cells, have odorant receptive fields (ORFs) (molecular receptive ranges in odorant space for carbon chain length in organic odorant molecules). This study quantified ...
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 ...