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Articles 28501 - 28530 of 39103
Full-Text Articles in Entire DC Network
Two New Species Of Freshwater Crabs From Mt. Elgon, East Africa With A Redescription Of Potamonautes Niloticus And Notes On Their Natural History" , Neil Cumberlidge, Paul F. Clark
Two New Species Of Freshwater Crabs From Mt. Elgon, East Africa With A Redescription Of Potamonautes Niloticus And Notes On Their Natural History" , Neil Cumberlidge, Paul F. Clark
Journal Articles
No abstract provided.
Effects Of Flight Speed Upon Muscle Activity In Hummingbirds, Bret W. Tobalske, Andrew A. Biewener, Douglas R. Warrick, Tyson L. Hedrick, Donald R. Powers
Effects Of Flight Speed Upon Muscle Activity In Hummingbirds, Bret W. Tobalske, Andrew A. Biewener, Douglas R. Warrick, Tyson L. Hedrick, Donald R. Powers
Faculty Publications - Department of Biological & Molecular Science
Hummingbirds have the smallest body size and highest wingbeat frequencies of all flying vertebrates, so they represent one endpoint for evaluating the effects of body size on sustained muscle function and flight performance. Other bird species vary neuromuscular recruitment and contractile behavior to accomplish flight over a wide range of speeds, typically exhibiting a Ushaped curve with maxima at the slowest and fastest flight speeds. To test whether the high wingbeat frequencies and aerodynamically active upstroke of hummingbirds lead to different patterns, we flew rufous hummingbirds (Selasphorus rufus, 3��g body mass, 42��Hz wingbeat frequency) in a variable-speed wind tunnel (0–10��m��s–1). …
Erk Activation And Cell Growth Require Cam Kinases In Mcf-7 Breast Cancer Cells, John M. Schmitt, Ellen Abell, Andrea Wagner, Monika A. Davare
Erk Activation And Cell Growth Require Cam Kinases In Mcf-7 Breast Cancer Cells, John M. Schmitt, Ellen Abell, Andrea Wagner, Monika A. Davare
Faculty Publications - Department of Biological & Molecular Science
Previous studies on MCF-7 breast cancer cells have shown that the G-protein coupled receptor (GPCR) agonist carbachol increases intracellular calcium levels and the activation of extracellular signal-regulated kinase (ERK). Calcium and calmodulin regulate the calcium/calmodulin- dependent kinase (CaM kinase) family of proteins that have been proposed to regulate ERK and gene transcription. Our results suggest that both estrogen (E2) and carbachol treatment of MCF-7 breast cancer cells trigger phosphorylation of ERK I /2 and the transcription factor Elk-1. Carbachol and estrogen triggered nearly a four- to sixfold increase in MCF-7 cell proliferation by 96 h, respectively. Carbachol-stimulated ERK activation and …
Arthropod Foraging By A Southeastern Arizona Hummingbird Guild, Don Powers, Jessamyn A. Van Hook, Elizabeth A. Sandlin, Todd J. Mcwhorter
Arthropod Foraging By A Southeastern Arizona Hummingbird Guild, Don Powers, Jessamyn A. Van Hook, Elizabeth A. Sandlin, Todd J. Mcwhorter
Faculty Publications - Department of Biological & Molecular Science
We tested the hypothesis that foraging for arthropods may be a viable source of energy when hummingbirds are competitively excluded from sources of nectar. We hypothesized that the Magnificent Hummingbird (Eugenes fulgens) relies more upon arthropods than the Blue-throated Hummingbird (Lampornis clemenciae) or Blackchinned Hummingbird (Archilochus alexandri) in southeastern Arizona. We were unable to quantify arthropod foraging by A. alexandri, but measured frequent arthropod foraging by both E. fulgens and L. clemenciae. E. fulgens engaged in more aerial flycatching than L. clemenciae, and their rate of flycatching attempts was higher than by L. clemenciae. Analysis of gut contents showed that …
Inhibition Of Nonsense-Mediated Mrna Decay By Antisense Morpholino Oligonucleotides Restores Functional Expression Of Herg Nonsense And Frameshift Mutations In Long-Qt Syndrome, Qiuming Gong, Matthew R. Stump, Zhengfeng Zhou
Inhibition Of Nonsense-Mediated Mrna Decay By Antisense Morpholino Oligonucleotides Restores Functional Expression Of Herg Nonsense And Frameshift Mutations In Long-Qt Syndrome, Qiuming Gong, Matthew R. Stump, Zhengfeng Zhou
Faculty Publications - Department of Biological & Molecular Science
Mutations in the human ether-a-go-go-related gene (hERG) cause long-QT syndrome type 2 (LQT2). We previously described a homozygous LQT2 nonsense mutation Q1070X in which the mutant mRNA is degraded by nonsense-mediated mRNA decay (NMD) leading to a severe clinical phenotype. The degradation of the Q1070X transcript precludes the expression of truncated but functional mutant channels. In the present study, we tested the hypothesis that inhibition of NMD can restore functional expression of LQT2 mutations that are targeted by NMD. We showed that inhibition of NMD by RNA interference-mediated knockdown of UPF1 increased Q1070X mutant channel protein expression and hERG current …
Mutational Studies Uncover Non-Native Structure In The Dimeric Kinetic Intermediate Of The H2a–H2b Heterodimer, Matthew R. Stump, Lisa M. Gloss
Mutational Studies Uncover Non-Native Structure In The Dimeric Kinetic Intermediate Of The H2a–H2b Heterodimer, Matthew R. Stump, Lisa M. Gloss
Faculty Publications - Department of Biological & Molecular Science
The folding pathway of the histone H2A–H2B heterodimer minimally includes an on-pathway, dimeric, burst-phase intermediate, I2. The partially folded H2A and H2B monomers populated at equilibrium were characterized as potential monomeric kinetic intermediates. Folding kinetics were compared for initiation from isolated, folded monomers and the heterodimer unfolded in 4 M urea. The observed rates were virtually identical above 0.4Murea, exhibiting a log-linear relationship on the final denaturant concentration. Below ∼0.4 M urea (concentrations inaccessible from the 4-M urea unfolded state), a rollover in the rates was observed; this suggests that a component of the I2 ensemble contains non-native structure that …
Mitochondrial Physiology Of Diapausing And Developing Embryos Of The Annual Killifsh Austrofundulus Limnaeus: Implications For Extreme Anoxia Tolerance, Jeff Duerr, Jason E. Podrabsky
Mitochondrial Physiology Of Diapausing And Developing Embryos Of The Annual Killifsh Austrofundulus Limnaeus: Implications For Extreme Anoxia Tolerance, Jeff Duerr, Jason E. Podrabsky
Faculty Publications - Department of Biological & Molecular Science
Diapausing embryos of the annual killiWsh Austrofundulus limnaeus have the highest reported anoxia tolerance of any vertebrate and previous studies indicate modified mitochondrial physiology likely supports anoxic metabolism. Functional mitochondria isolated from diapausing and developing embryos of the annual killifish exhibited VO2, respiratory control ratios (RCR), and P:O ratios consistent with those obtained from other ectothermic vertebrate species. Reduced oxygen consumption associated with dormancy in whole animal respiration rates are correlated with maximal respiration rates of mitochondria isolated from diapausing versus developing embryos. P:O ratios for developing embryos were similar to those obtained from adult liver, but were diminished in …
Explorations Of Aspects Of Mixotrophy Using Mathematical Models, Kenneth W. Crane
Explorations Of Aspects Of Mixotrophy Using Mathematical Models, Kenneth W. Crane
Biology Dissertations - Archive
This work examined three theoretical aspects of mixotrophy, the simultaneous use of phototrophic and heterotrophic nutritional modes, and one practical application. The first study addressed the coexistence of microorganisms pursuing diverse nutritional strategies. It was found that in the range of model environments explored that all four types of organisms were predicted to persist for certain parameter combinations. The most successful mixotrophs were predicted to be primarily autotrophic, supplementing photosynthesis with bacterivory. The second study extended the first one by focusing on the effects of environmental parameters governing resource supplies and the responses of populations and ecosystem properties in relation …
Genetic Conflict And Sex Chromosome Evolution, Colin D. Meiklejohn, Yun Tao
Genetic Conflict And Sex Chromosome Evolution, Colin D. Meiklejohn, Yun Tao
School of Biological Sciences: Faculty Publications
Chromosomal sex determination systems create the opportunity for the evolution of selfish genetic elements that increase the transmission of one sex chromosome at the expense of its homolog. Because such selfish elements on sex chromosomes can reduce fertility and distort the sex ratio of progeny, unlinked suppressors are expected to evolve, bringing different regions of the genome into conflict over the meiotic transmission of the sex chromosomes. Here we argue that recurrent genetic conflict over sex chromosome transmission is an important evolutionary force that has shaped a wide range of seemingly disparate phenomena including the epigenetic regulation of genes expressed …
Effect Of Ingestion By Alligator Snapping Turtles (Macrochelys Temminckii) On Seeds Of Riparian Vegetation, Jean Pierre Elbers
Effect Of Ingestion By Alligator Snapping Turtles (Macrochelys Temminckii) On Seeds Of Riparian Vegetation, Jean Pierre Elbers
Graduate Theses/Dissertations
The alligator snapping turtle (Macrochelys temminckii) is a large freshwater turtle that inhabits many lotic water bodies in the Southeastern United States. The species consumes primarily fish but also consumes large amounts of vegetation including seeds of common persimmon (Diospyros virginiana), tupelos (Nyssa sp.), willow oak (Quercus phellos), and pecan (Carya illinoensis). Captive specimens of M. temminckii were fed samples of the above-mentioned seeds to assess how the species affects ingested seeds in order to evaluate the potential role this species may play as a seed disperser. The proportion of seeds defecated intact varied with species (57−99 %), was lowest …
Nutritional Analysis Of High Fructose Corn Syrup, Emily Pitts
Nutritional Analysis Of High Fructose Corn Syrup, Emily Pitts
A with Honors Projects
An analysis of high fructose corn syrup and its positive and/or negative aspects.
Identification Of A Nuclear Export Signal In The Catalytic Subunit Of Amp-Activated Protein Kinase, N. Kazgan, Tyisha Williams, L. J. Forsberg, J. E. Brenman
Identification Of A Nuclear Export Signal In The Catalytic Subunit Of Amp-Activated Protein Kinase, N. Kazgan, Tyisha Williams, L. J. Forsberg, J. E. Brenman
Biology Faculty Research
The metabolic regulator AMP-activated protein kinase (AMPK) maintains cellular homeostasis through regulation of proteins involved in energy-producing and -consuming pathways. Although AMPK phosphorylation targets include cytoplasmic and nuclear proteins, the precise mechanisms that regulate AMPK localization, and thus its access to these substrates, are unclear. We identify highly conserved carboxy-terminal hydrophobic amino acids that function as a leptomycin B–sensitive, CRM1-dependent nuclear export sequence (NES) in the AMPK catalytic subunit (AMPKα). When this sequence is modified AMPKα shows increased nuclear localization via a Ran-dependent import pathway. Cytoplasmic localization can be restored by substituting well-defined snurportin-1 or protein kinase A inhibitor (PKIA) …
Figs, Wasps, Gophers, And Lice: A Computational Exploration Of Coevolution, Ran Libeskind-Hadas
Figs, Wasps, Gophers, And Lice: A Computational Exploration Of Coevolution, Ran Libeskind-Hadas
All HMC Faculty Publications and Research
This chapter explores the topic of coevolution: the genetic change in one species in response to the change in another. For example, in some cases, a parasite species might evolve to specialize with its host species. In other cases, the relationship between two species may be mutually beneficial and coevolution may serve to strengthen the benefits of that relationship.
Using Shewanella Baltica Ecotypes As A Model For Transcriptional Variation At The Population Level, William Sealy Hambright
Using Shewanella Baltica Ecotypes As A Model For Transcriptional Variation At The Population Level, William Sealy Hambright
Biology Theses - Archive
Eukaryotic studies have shown considerable transcriptional variation among individuals of the same population. Owing to the cost of sequencing entire eukaryotic genomes, tested organisms were assumed to be genomically similar or even identical. We overcame this necessary assumption by using four sequenced strains of the bacterium Shewanella baltica, (OS155, OS185, OS195, OS223), as models to assess transcriptional variation and ecotype formation within a prokaryotic population. The strains were isolated from various depths throughout a water column of the Baltic Sea occupying different ecological niches characterized by various abiotic parameters. Although their genome sequences are strikingly similar, when grown in the …
A Tale Of Three Phytopathogens: Impact Of Transposable Elements On Genome Evolution, Komal Vadnagara
A Tale Of Three Phytopathogens: Impact Of Transposable Elements On Genome Evolution, Komal Vadnagara
Biology Theses - Archive
The genus Phytophthora harbors some notorious plant pathogens like Phytophthora infestans (causal of Irish potato famine), Phytophthora sojae (soybean rot agent), and Phytophthora ramorum (responsible for sudden oak death) that have significant economic, ecological and environmental impact. These phytopathogens exhibit remarkable phenotypic instability and vary tremendously in genome size from 65 Mb (P. ramorum) to 240 Mb (P. infestans). Complete draft genome sequences revealed that a substantial portion of their genome is occupied by highly repetitive DNA. This extreme genome plasticity is due to an infestation of repetitive virus-like genomic parasites called transposable elements (TEs). TEs are sometimes called jumping …
Environmental Regulation Of Stomate-Based Defense Against Bacterial Infection In Arabidopsis, Reejana Chitrakar
Environmental Regulation Of Stomate-Based Defense Against Bacterial Infection In Arabidopsis, Reejana Chitrakar
Biology Theses - Archive
Stomata are natural openings in the plant epidermis responsible for gas (O2 and CO2) exchange between plant interior and environment. They are formed by a pair of guard cells, which are able to close the stomatal pore in response to a number of external factors including light intensity, carbon dioxide concentration, and relative humidity. The stomatal pore is also the main route for pathogen entry into leaves, a crucial step for disease development. Recent studies have unveiled that closure of the pore is effective in preventing bacterial disease in Arabidopsis plants and the successful plant pathogen Pseudomonas syringae pv. tomato …
Comparing The Genome Expression Profiles Of Verrucomicrobium Sp. Strain Tav2 Cells Grown Under Two Different Oxygen Concentrations, Austin Willis
Comparing The Genome Expression Profiles Of Verrucomicrobium Sp. Strain Tav2 Cells Grown Under Two Different Oxygen Concentrations, Austin Willis
Biology Theses - Archive
Termites are significantly different in their lifestyles and organization but most are linked by the common trait in degrading plant material, whether it is leaf litter, wood, soil or animal waste. They consume the cellulose, hemicelluloses and lignin that make up the plant material but rely on a food web consisting of about 270 different phylotypes of microorganisms to break down the biomass into usable nutrients. Isolated from the hindgut of the termite Reticulitermis flavipes, one such organism is Verrucomicrobium sp. strain TAV2. Members of this relatively new bacterium phylum have rigid peptidoglycan with some possessing prosthecae. They have been …
Characterization Of Anti-Rotavirus Activities Of Saponin Extracts From Quillaja Saponaria, Ka Ian Tam
Characterization Of Anti-Rotavirus Activities Of Saponin Extracts From Quillaja Saponaria, Ka Ian Tam
Biology Dissertations - Archive
Rotavirus is the leading cause of severe diarrhea disease in newborns and young children worldwide, estimated to be responsible for over 500,000 adolescent deaths mostly in developing countries each year. Rotavirus-related deaths represent approximately 5% of all deaths in children younger than five years of age worldwide. Previous research has shown that Quillaja saponins demonstrate strong antiviral activity against 7 different viruses, including rotavirus, in vitro. Quillaja saponins, a natural, aqueous extract of triterpenoid saponins obtained from Quillaja saponaria, the Chilean Soap Bark tree that display strong adjuvant activity when used in vaccines. In this study, Quillaja saponins are stable …
Integration Mechanism Of The Site Specific Non-Ltr Retrotransposon, R2bm, Christi Lynn Hull
Integration Mechanism Of The Site Specific Non-Ltr Retrotransposon, R2bm, Christi Lynn Hull
Biology Theses - Archive
The focus of this thesis is the mechanistic study of non-LTR retrotransposon replication using the site specific transposon R2Bm. Non-LTR retrotransposons integrate into new chromosomal sites by copying their RNA back into DNA at the site of insertion using an exposed chromosomal 3' OH to prime cDNA synthesis.1 Although some of the early steps of an integration event have been detailed, how the element completes integration remains unknown.¹ ² ³ ⴠⵠⶠClarifying the last integration step, known as second strand synthesis, is a major goal of this research. In order to accomplish this, R2 RNA and protein substrates …
Insights Into The Transmission Of Helitrons And Their Impact On The Genome Architecture Of Myotis Lucifugus, The Little Brown Bat, Jainy Thomas
Biology Dissertations - Archive
Probably the most dynamic proportion of multicellular eukaryotic genomes is composed of teeming populations of parasitic mobile DNA, called transposable elements (TEs). Helitrons are rolling circle TEs that have a limited distribution among mammals, having been identified only in the genome of the little brown bat, Myotis lucifugus, and a few closely related species. One family of Helitrons, called Helibat, was estimated to make up as much as 3% of the M. lucifugus genome. In addition, Helibat was shown to have captured and amplified the promoter and 5' UTR of a highly conserved single copy gene to >1000 copies. Together …
Reproductive Isolation In Drosophila: From Behavior To Genome, Daina Ma
Reproductive Isolation In Drosophila: From Behavior To Genome, Daina Ma
Biology Dissertations - Archive
In this study, I investigate factors underlying reproductive isolation in Drosophila. I begin (Part I) by measuring behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster, and asking the following questions: What is the pattern? What are the sensory cues leading to isolation? In Part II, I present results of a genomic screen for candidate genes underlying behavioral isolation between Zimbabwe and cosmopolitan D. melanogaster. Then I turn to the genomic causes of postzygotic reproductive isolation (Parts III and IV): What are the possible genes associated with hybrid sterility? What are the relationships between fertility/sterility and genotypes and allelic expression? What …
Comparison Of The Dna Methylation Patterns Between Interspecific Xenopus F1 Hybrids And Their Parental Species, Alie Patrick Koroma
Comparison Of The Dna Methylation Patterns Between Interspecific Xenopus F1 Hybrids And Their Parental Species, Alie Patrick Koroma
Biology Dissertations - Archive
In this study the main focus is to compare the methylation patterns of interspecific Xenopus F1 hybrids to the parental species using Methyl-Sensitive Amplification Polymorphisms (MSAPs). Genomic DNA was extracted from the liver and muscle tissues from a representative sample of F1 hybrids and the parental species (Xenopus laevis and X. muelleri). First, the MSAP markers were very effective in comparing the methylation patterns of hybrids and the parental species. Genetic analysis of 504 liver and 364 muscle MSAP markers revealed that these markers were highly polymorphic. Principal coordinate analysis showed four distinct clusters with the two parental species separate …
Effects Of The Exotic Invader, Tamarix Spp., On Aspects Of The Aquatic Ecosystem At Mccomb Creek, Presidio County, Texas, Jane Blaisdell Nellan Moore
Effects Of The Exotic Invader, Tamarix Spp., On Aspects Of The Aquatic Ecosystem At Mccomb Creek, Presidio County, Texas, Jane Blaisdell Nellan Moore
Biology Dissertations - Archive
The effects of saltcedar, Tamarix spp., invasion in riparian zones of the western United States have been well documented. These include, but are not limited to soil salinization, and shifts in hydrology and water use. Comparatively unknown are the effects on the associated aquatic systems and if a significant increase in water salinity accompanies these invasions. Shifts in stream metabolism have been reported, but the impacts of saltcedar invasion on the algal species, which are the dominant primary producers in desert aquatic ecosystems, are unknown. A two year study was conducted in an oligotrophic desert stream, currently experiencing an invasion, …
Role Of Repetitive Dna In Apicomplexan Genome Evolution, Assiatu B. Barrie
Role Of Repetitive Dna In Apicomplexan Genome Evolution, Assiatu B. Barrie
Biology Theses - Archive
The Apicomplexa represent a phylum of obligate intracellular parasites that impart significant medical, veterinary, and socioeconomic burdens worldwide. The opportunistic, AIDS-associated, pathogen Toxoplasma gondii for instance, infects about one-third of the human population causing serious, life-threatening illness and birth defects in some. The genomes of fifteen apicomplexan species ranging in size from 8.3Mb to 64.0Mb have been sequenced and reveal a significant amount of plasticity in terms of size, AT-richness, introns and gene density. In many instances, genome size variation can be explained by differential expansion of repetitive DNA acquired through varying processes: intracellular organellar DNA transfer events, and proliferation …
Patterns Of Subnet Usage Reveal Distinct Scales Of Regulation In The Transcriptional Regulatory Network Of Escherichia Coli, Carsten Marr, Fabian J. Theis, Larry S. Liebovitch, Marc-Thorsten Hutt
Patterns Of Subnet Usage Reveal Distinct Scales Of Regulation In The Transcriptional Regulatory Network Of Escherichia Coli, Carsten Marr, Fabian J. Theis, Larry S. Liebovitch, Marc-Thorsten Hutt
Publications and Research
The set of regulatory interactions between genes, mediated by transcription factors, forms a species’ transcriptional regulatory network (TRN). By comparing this network with measured gene expression data, one can identify functional properties of the TRN and gain general insight into transcriptional control. We define the subnet of a node as the subgraph consisting of all nodes topologically downstream of the node, including itself. Using a large set of microarray expression data of the bacterium Escherichia coli, we find that the gene expression in different subnets exhibits a structured pattern in response to environmental changes and genotypic mutation. Subnets with fewer …
Building Better Scientists Through Cross-Disciplinary Collaboration In Synthetic Biology: A Report From The Genome Consortium For Active Teaching Workshop 2010, Michael J. Wolyniak, Consuelo J. Alvarez, Vidya Chandrasekaran, Theresa M. Grana, Andrea Holgado, Christopher J. Jones, Robert W. Morris, Anil L. Pereira, Joyce Stamm, Talitha M. Washington, Yixin Yang
Building Better Scientists Through Cross-Disciplinary Collaboration In Synthetic Biology: A Report From The Genome Consortium For Active Teaching Workshop 2010, Michael J. Wolyniak, Consuelo J. Alvarez, Vidya Chandrasekaran, Theresa M. Grana, Andrea Holgado, Christopher J. Jones, Robert W. Morris, Anil L. Pereira, Joyce Stamm, Talitha M. Washington, Yixin Yang
Biological Sciences Research
A common problem faced by primarily undergraduate institutions is the lack of funding and material support needed to adequately expose students to modern biology, including synthetic biology. To help alleviate this problem, the Genome Consortium for Active Teaching (GCAT) was founded in 2000 by Malcolm Campbell at Davidson College to bring genomics into the undergraduate curriculum. GCAT’s first tangible activity was to serve as a central clearinghouse both for the purchase and reading of DNA microarrays and for information on how to execute genomics experiments at undergraduate institutions. In response to the evolution of molecular biology in the last decade, …
First Report Of The Developmental Changes Inside The Eggs Of The Chinese Freshwater Crab , J Xue, Y Liu, Neil Cumberlidge, H X. Wu
First Report Of The Developmental Changes Inside The Eggs Of The Chinese Freshwater Crab , J Xue, Y Liu, Neil Cumberlidge, H X. Wu
Journal Articles
No abstract provided.
Integrating Spatial And Temporal Approaches To Understanding Species Richness, Ethan P. White, S. K. Morgan Ernest, Peter B. Adler, Allen H. Hurlbert, S. Kathleen Lyons
Integrating Spatial And Temporal Approaches To Understanding Species Richness, Ethan P. White, S. K. Morgan Ernest, Peter B. Adler, Allen H. Hurlbert, S. Kathleen Lyons
School of Biological Sciences: Faculty Publications
Understanding species richness patterns represents one of the most fundamental problems in ecology. Most research in this area has focused on spatial gradients of species richness, with a smaller area of emphasis dedicated to understanding the temporal dynamics of richness. However, few attempts have been made to understand the linkages between the spatial and temporal patterns related to richness. Here, we argue that spatial and temporal richness patterns and the processes that drive them are inherently linked, and that our understanding of richness will be substantially improved by considering them simultaneously. The species–time–area relationship provides a case in point: successful …
Analysis Of Bacterial Diversity In Arctic Soil And Sediment Samples From Ny-Alesund, Norway Using Denaturing Gradient Gel Electrophoresis., Yew Wen Chyin
Student Works (2010-2019)
Bacterial diversity in soil and sediment samples from eighteen sites in and around Dasan Station, Ny-Ålesund, Norway was analyzed using Denaturing Gradient Gel Electrophoresis (DGGE), and was correlated with the environmental variables. Samples analysed included terrestrial soils, beach soil, periglacier soils, inland lake bank sediments, melt lake sediments, and marine sediments. Spearman rank order correlation showed significant correlations (P = 0.001) between conductivity (r = 0.470) and pH (r = 0.294) with the bacterial diversity. Soil from the tundra site (sample 17) appeared to have the most diverse bacterial community while inland lake bank sediment from the …
The Herpetofauna Of The Virunga Mountains With Emphasis On Two Species Of Albertine Rift Endemic Treefrogs Of The Genus Leptopelis., Corey Edward Roelke
The Herpetofauna Of The Virunga Mountains With Emphasis On Two Species Of Albertine Rift Endemic Treefrogs Of The Genus Leptopelis., Corey Edward Roelke
Biology Dissertations - Archive
I present a short description of the biodiversity crisis, the Albertine Rift as a biodiversity hotspot, and a literature review of the taxonomy of the genus Leptopelis. I then present a list of the reptiles and anurans from the Parc National des Volcans (PNV)(01°43'S, 29°52'W), an area in the west and north provinces of the Republic of Rwanda in the Albertine Rift region of Africa. Fieldwork was conducted for two to six days per week from June through August of 2007 and 2008. I also conducted literature searches of all historical expeditions within the park for species records. Seventeen species …