Browsing Department of Biology by Issue Date
Now showing items 21-40 of 195
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Comparing The Melanin-concentrating Hormone -1 Receptor Expression In The Brains Of Mice And Rats
(Biology, 2007-09-17)The melanin-concentrating hormone (MCH) family of neuropeptides is believed to be important in controlling certain feeding behaviors. Recently, the distribution of melanin-concentrating-1 receptor (MCH-1R) in rat brains ... -
Rate Of Diversification In Crickets (Orthoptera: Ensifera) And A Possible Role Of F Supergroup Wolbachia In Bush Crickets
(Biology, 2007-09-17)Part I: Rates of speciation can tell us more than how many species have survived over a period of time. They indicate whether there are some characteristics of organisms or biogeography scenarios facilitate or hinder ... -
Genetic Determinants Of Reproductive Isolation In Xenopus
(Biology, 2007-09-17)Haldane's rule states that in F1 interspecific hybrids the heterogametic sex (XY or ZW) suffers the most dysfunctional effects of hybridization. Frogs of the genus Xenopus have ZW sex determination yet hybrid males are ... -
Efficacy Of Selected Natural And Synthetic Novel Organic Compounds In Prevention Of Zebra Mussel (Dreissena Polymorpha) Macrofouling By Byssal Attachment Inhibition
(Biology, 2007-10-08)The invasive, freshwater, bivalve, Dreissena polymorpha (zebra mussel) was introduced to North America in the Great lakes in 1986 and has since spread throughout the waterway of the eastern and central United States and ... -
Monte Carlo Analysis Of Refuge Site Selection: Statistical Properties And An Empirical Example
(Biology, 2007-10-08)The Monte Carlo method can be a useful technique providing information on central tendencies and tolerance for selection data. There are many statistical hypothesis tests that are employed in selection studies, but most ... -
Efficacy Of A Series Of Organotin Polymers As Anticancer And Antiviral Drugs
(Biology, 2008-04-22)Anticancer drugs have been shown to have antiviral abilities as well. The two types of diseases are similar in that they hold the cell in a continued growth phase. Therefore, if a drug has anticancer activity, it could ... -
A Sticky Situation: Functional Responses Of Mast Cells To Acidic pH
(Biology, 2008-04-22)Precise regulation of extracellular pH is critical for proper function of many cellular activities. Minor fluctuations in pH can have profound effects on ion transport, receptor function, and cellular secretions. This work ... -
Rcd-1 Related:a Positively Selected Retrogene With Spermatogenesis Function In Drosophila
(Biology, 2008-04-22)Gene duplication is one of the major forces in driving genome evolution. Our study focuses on a particular retrogene Rcd-1 related (Rcd-1r) that originated through retroposition of the parental gene Required for cell ... -
Cellular Targets Involved In Reovirus-induced Oncolysis Of RAs-transformed Cells
(Biology, 2008-04-22)Reovirus is a ubiquitous virus with demonstrated oncolytic properties. In this study, we investigate the pathways which reovirus produces a lytic infection in SV-40 transformed WI-38 cells and the noncytocidal infection ... -
Effects Of Nutrient Limitation, Competitors And Grazers On The Abundance And Toxicity Of Laboratory Cultures Of P. parvum, a Harmful Alga
(Biology, 2008-08-08)P. parvum Carter is a haptophyte that occurs world wide in both fresh and brackish waters. Though P. parvum blooms occur world wide under a variety of environmental conditions, it occurs during the cooler months of the ... -
Transposon Exaptation In Mammalian Evolution
(Biology, 2008-08-08)A growing body of work suggests that the exaptation of transposon-derived sequences to perform beneficial cellular functions has played a significant role in eukaryotic evolution. In chapter 1, we present an analysis of ... -
Lack Of Respiratory Effects Of Nicotine Applied To The Caudal Medullary Raphé
(Biology, 2008-08-08)Breathing is an involuntary and automatic process initiated by a network of neurons within the brainstem. These neurons are affected by a number of factors (mechanical, electrical and chemical) that help modulate the ... -
Carbon, Nitrogen And Phosphorus Stoichiometry Of A Mixotrophic Protist
(Biology, 2008-08-08)The microbial loop is one of two major pathways in aquatic systems in which nutrient and energy flow from dissolved nutrients to higher trophic levels. Protozoan-bacteria predator-prey relationships lie at the base of ... -
The Relationship Of Oribatid Soil Mite Abundance To Abiotic And Biotic Factors
(Biology, 2008-08-08)Oribatid soil mites primarily feed on fungi and dead organisms. They belong to the arthropod subclass, Acari, that are believed to contribute to soil processes such as plant litter breakdown and nutrient release. In order ... -
How Herbivores Affect Plant Growth, Community Structure And Litter Decomposition In Alaskan Tundra: Implications For Responses To Climate Change
(Biology, 2008-09-17)Increasing atmospheric carbon dioxide (CO2) concentrations have caused higher air temperatures in the Arctic. Because arctic organisms are temperature limited, warmer conditions lead to higher decomposition and nutrient ... -
Phylogeography And Geographical Variation Of Behavioral And Morphological Characteristics In Paruroctonus boreus
(Biology, 2008-09-17)Specimens of Paruroctonus boreus were collected from twenty-four sites to assess the geographic variation in behavioral, morphological and molecular traits. Statistical analyses showed males demonstrated a positive response ... -
The Control Of Gene Expression By High Light Stress In Cyanobacteria Through The Apparent Two-component NblS-RpaB Signal Transduction Pair
(Biology, 2008-09-17)In nature photosynthetic organisms including cyanobacteria are dependent upon their ability to acclimate to changes in environmental conditions including light and nutrient levels. The NblS sensor kinase of the cyanobacterium ... -
Species Limits And Phylogenetic Systematic Of The Diurnal Geckos Of The Genus Gonatodes (Squamata: Sphaerodactylidae)
(Biology, 2008-09-17)The genus Gonatodes (family Sphaerodactylidae) is a diverse of group of about 20 species currently recognized of mostly diurnal geckos that are collectively distributed from southern Mexico to Brazil and Bolivia, and also ... -
Comparative Thermal Biology And Associated Niche Differentiation Among the Five-Lined Skinks
(Biology, 2008-09-17)Three species of five-lined skinks (Plestiodon fasciatus, P. laticeps, and P. inexpectatus) occur in regional sympatry across much of the Southeastern United States. These closely-related species, at one or more levels of ... -
The Effects Of An Artifically Elevated Thermal Environment And Seasonal Acclimatization On The Thermal Tolerance Of The Western Mosquitofish, Gambusia affinis
(Biology, 2008-09-17)Gambusia affinis, the western mosquitofish, is a very hardy, live-bearing fish that has invaded freshwater habitats worldwide. The success of the western mosquitofishs' invasion is due to its reproductive capabilities and ...