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A Spatial Dynamic Model Of Population Changes In A Vulnerable Coastal Environment, Kenan Li Jan 2015

A Spatial Dynamic Model Of Population Changes In A Vulnerable Coastal Environment, Kenan Li

LSU Doctoral Dissertations

Achieving coastal sustainability in low-lying coastal areas is a great challenge. This study developed a spatial dynamic model to study the coupled natural-human responses in the form of population changes in the Lower Mississippi River Basin region. The goal was to identify the key social-economic factors (utility) and selected environmental factors (such as hazards damage, elevation, and subsidence rate) that affect population changes, as well as how population changes affect the local utility and the local environment reciprocally. The study area was partitioned into the “north’ and the “south” by a hypothetical boundary to test the differences of the emergence. …

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Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz Jan 2015

Health Effects Of Dietary Fermentable Fiber (Resistant Starch), Diana Gabriela Carvajal-Aldaz

LSU Doctoral Dissertations

Resistant starch (RS) reaches the large intestine for fermentation and is considered a prebiotic. We wanted to determine if we could reduce fermentation for future mechanistic studies and how there is improved insulin sensitivity in human studies with or without increased incretin hormone glucagon-like peptide 1 (GLP-1). Two main studies were performed. In the first main study, low potency antibiotics (Ampicillin 1g/L and Neomycin 0.5g/L) were added to the drinking water of rats to reduce fermentation of RS. Antibiotics were used either prior (first) to or during (second) feeding of RS. Results demonstrated that low potency antibiotics given prior to …

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Revisit And Revise: The Introspective Approach To Reclamation And Redevelopment In Miami's Urban Core, Jescelle Renee Major Jan 2015

Revisit And Revise: The Introspective Approach To Reclamation And Redevelopment In Miami's Urban Core, Jescelle Renee Major

LSU Master's Theses

The human plays a vital role in the city and the city a vital role in the sustainability and resiliency of the future. It is imperative to explore all avenues for improvement and longevity. Now is the time to explore methods to strengthen the cities we have and the people who live there. This is especially true for coastal cities facing sea level rise and climate change. It is important now not to dwell on what we have lost but to seek methods for using the memory of a place to restore and build for the future. Recognizing there is …

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The Erotics Of Race Suicide: The Making Of Whiteness And The Death Drive In The Progressive Era, 1880-1920, Madoka Kishi Jan 2015

The Erotics Of Race Suicide: The Making Of Whiteness And The Death Drive In The Progressive Era, 1880-1920, Madoka Kishi

LSU Doctoral Dissertations

"The Erotics of Race Suicide" examines the frequent representation of suicide in Progressive Era American literature in light of a widely proclaimed socio-political concept of the time: “race suicide.” Coined by the sociologist Edward Ross, the term “race suicide” nominates a nativist fear over the racial enervation of indigenous white Americans. Ross and other commentators on race suicide, most notably Theodore Roosevelt, proclaimed that the diminution of the indigenous white Americans was caused by their unwillingness to breed, signaling the self-destructive, “suicidal” tendency of the race. Consequently, through such means as the enactment of immigration restrictions, the reinforcement of anti-miscegenation …

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Estimating Desirable Cattle Traits Using Latent Class And Mixed Logit Models: A Choice Modeling Application To The U.S. Grass-Fed Beef Industry, Isaac Sitienei Jan 2015

Estimating Desirable Cattle Traits Using Latent Class And Mixed Logit Models: A Choice Modeling Application To The U.S. Grass-Fed Beef Industry, Isaac Sitienei

LSU Doctoral Dissertations

This study examines the preferences for cattle traits using mixed logit and latent class models. Choice experiment data from a 2013 mail survey of 1,052 U.S. grass-fed beef producers were used. The findings indicate that grass-fed beef producers generally preferred lower-priced, heavy animals that were small-to-medium framed and easy to handle for grass-finishing. Black animals that were retained from their own calves were preferred. Relative to intact males, steers and heifers were preferred. Except for the estimated parameter for the weight attribute, the standard deviations for the temperament, body frame, source, color, gender, and price attribute levels were significant at …

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Evaluation Of Ammonia, Greenhouse Gas Emissions And Characterization Of Different Particulate Matter During Sugarcane Production In Southern Louisiana, Sanku Dattamudi Jan 2015

Evaluation Of Ammonia, Greenhouse Gas Emissions And Characterization Of Different Particulate Matter During Sugarcane Production In Southern Louisiana, Sanku Dattamudi

LSU Doctoral Dissertations

Application of N fertilizers and special land management practices during agricultural production could have significant implication in influencing the air quality. In this study, field experiments were established at different research sites in Louisiana to evaluate the emission of ammonia (NH3), greenhouse gases (GHG), and fine particulates from sugarcane cultivation and harvesting. Specifically, this study was planned to (i) evaluate the effect of different N sources (urea and urea ammonium nitrate) and residue management schemes (residue burned, RB; and residue retained, RR) on NH3 and GHG emissions, (ii) characterize the chemical and morphological characteristics of fine particles generated during sugarcane …

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A Study Evaluating Genetic Trends And Molecular Predisposition To Improved Carcass Quality Of Brahman And Brahman Influenced Cattle, Amanda M. Royer Jan 2015

A Study Evaluating Genetic Trends And Molecular Predisposition To Improved Carcass Quality Of Brahman And Brahman Influenced Cattle, Amanda M. Royer

LSU Master's Theses

The first objective of the current study was to evaluate genetic trends from 10 years of the American Brahman Breeders Association Carcass Evaluation Program from 2004 to 2013. Changes of performance in growth, carcass composition, and carcass quality traits were evaluated. Overall means were calculated to report the total average for each trait along with an average rate of change per year. Growth traits evaluated included feedlot entrance weight (INWT), harvest weight (HRVWT), and average daily gain (ADG). Carcass composition and quality traits evaluated included hot carcass weight (HCW), rib eye area (REA), marbling score (MARB), dressing percent (DP), quality …

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She Pricked Her Finger, Veronica Kay Hallock Jan 2015

She Pricked Her Finger, Veronica Kay Hallock

LSU Master's Theses

She Pricked Her Finger transports the viewer into a landscape of the bucolic and the macabre. Large scale sculptures and drawings create a panorama-environment which explores ideas of familial and geographical identity through themes of mortality and loss. Her work utilizes a self-generated folktale as a vehicle for expressing her experiences with new landscapes and many family deaths. Ultimately Veronica’s work reconciles the transition of home; the journey we take from our childhood home to the new homes we build.

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The Use Of Assisted Reproductive Technologies To Improve Pregnancy Rates In White-Tailed Deer, Jaclyn C. Lambe-Steinmiller Jan 2015

The Use Of Assisted Reproductive Technologies To Improve Pregnancy Rates In White-Tailed Deer, Jaclyn C. Lambe-Steinmiller

LSU Doctoral Dissertations

Detection of estrus in white-tailed (WT) deer is laborious and often missed, as there are few visual cues presented during the 24 h period in which females are receptive to mating. Reproductive management of WT operations is improved by the use of fixed-timed artificial insemination (FTAI) protocols. Fixed-timed AI removes the need for estrus detection and ensures the breeding of an entire herd, as well as the ability to schedule fawning within predetermined timeframes. Two studies evaluated two FTAI regimens and their ability to synchronize estrous in WT. The first study implemented the administration of eCG 200 IU (im) at …

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Gender Euphoria: Photography, Fashion, And Gender Nonconformity In The East Village, Alicia Diane Ridout Jan 2015

Gender Euphoria: Photography, Fashion, And Gender Nonconformity In The East Village, Alicia Diane Ridout

LSU Master's Theses

This thesis investigates the link between art and fashion photography in the work of Peter Hujar and Nan Goldin, both of whom commented on the nature of gender identity. There is an extensive body of fashion-inspired images by both of these East Village photographers that falls into this category. The pictures they produced of gender-nonconforming individuals serve to comment on the restrictive nature of gender identities represented in fashion photography, and also to elevate the status of those pictured to that of fashion models. The unique cultural context of the East Village served as the perfect location for both photographers …

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Antisense Regulation And Tissue-Specific Roles Of Peg3 In Lactation And Maternal Care, Wesley D. Frey Jan 2015

Antisense Regulation And Tissue-Specific Roles Of Peg3 In Lactation And Maternal Care, Wesley D. Frey

LSU Doctoral Dissertations

Genomic imprinting is characterized by the restrictive expression of a gene from one of the two inherited parental alleles. Many of these genes have been implicated in neonatal growth and mammalian reproduction. The two studies discussed in this dissertation focus on the tissue-specific contributions of Paternally Expressed Gene 3 (Peg3) on lactation and maternal care as well as the regulation of this gene through an antisense RNA (APeg3). In the first study, a conditional knockout allele has been developed to further characterize these known functions of Peg3 in a tissue-specific manner. The mutant line was first crossed with germline Cre, …

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Live And Carcass Characteristics Of Boer- And Savannah-Cross Kid Buckling Goats Fed Dried Distillers Grain With Solubles, James Neil Maynard Jan 2015

Live And Carcass Characteristics Of Boer- And Savannah-Cross Kid Buckling Goats Fed Dried Distillers Grain With Solubles, James Neil Maynard

LSU Master's Theses

The available supply of domestic goat meat has not matched the increased demand for goat meat. High cost of production is a concern of goat producers, with feed being a major factor in input expenses. Increasing slaughter weight of kid meat goats would increase the available goat meat, but requires added nutrition beyond that obtained from typical forage based systems for goat production. Savannah bucklings (n=31) and Boer bucklings (n=28) were stratified by weight and breed and were randomly assigned a treatment of 0 (T1), 15 (T2), 30 (T3), or 45 (T4) percent dried distillers grain with solubles (DDGS). One …

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Evaluation Of Enhanced Efficiency Nitrogen Fertilizers On Corn Production Systems In The Mid-South, Shanice M. Jones Jan 2015

Evaluation Of Enhanced Efficiency Nitrogen Fertilizers On Corn Production Systems In The Mid-South, Shanice M. Jones

LSU Master's Theses

Nitrogen (N) is often the most yield limiting nutrient, particularly in corn (Zea mays L.) production systems. In the Mid-South, high N application rates have the potential to lead to high N loss. To minimize this loss, proper N management should focus on improving N use efficiency (NUE) while optimizing productivity. The potential to achieve both tasks can be met using enhanced efficiency N fertilizer (EENF). However, limited research has directly compared the active chemicals in EENFs for corn production in the Mid-South. A study was conducted in 2013 and 2014 at two locations in Louisiana to determine the effectiveness …

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Public Perception Of Male Athletes Vs. Female Athletes In The Media, Kaleigh Elizabeth Dickson Jan 2015

Public Perception Of Male Athletes Vs. Female Athletes In The Media, Kaleigh Elizabeth Dickson

LSU Master's Theses

In this experiment, my goal was to determine if public perception of female athletes differed from public perception of male athletes. Female athletes are underrepresented in the media (Eastman and Billings, 2000), and because of this, public perception of male athletes might differ from their perceptions of female athletes in the media. I hypothesized that my respondents would best remember the female athletes appearance, best remember the male athletes interview content and that the female and male respondents who took my experiment would evaluate each athlete differently based on their own gender and the athletes’ gender. My results indicated that …

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A Domesticated Idea: British Women Writers And The Victorian Recipe, 1845-1910, Helana E. Brigman Jan 2015

A Domesticated Idea: British Women Writers And The Victorian Recipe, 1845-1910, Helana E. Brigman

LSU Doctoral Dissertations

Until recently, critics have devalued the Victorian cookbook as an object of literary inquiry, regularly dismissing it as “Victoriana”—cultural, anthropological histories detailing bland culinary traditions. A Domesticated Idea: British Women Writers and the Victorian Recipe, 1845-1910 seeks to provide a framework by which we can explore the Victorian cookbook as a literary text appropriated by writers responding to and advocating for cultural, educational, and artistic reform during the mid-to-late nineteenth century. Looking specifically at how women used recipes to discuss food preparation, dining, and household management, I argue that British women writers participated in a collaborative tradition, borrowing and sharing …

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Sustainable Materials For Pavement Infrastructure: Design And Performance Of Asphalt Mixtures Containing Recycled Asphalt Shingles, Samuel B. Cooper, Jr Jan 2015

Sustainable Materials For Pavement Infrastructure: Design And Performance Of Asphalt Mixtures Containing Recycled Asphalt Shingles, Samuel B. Cooper, Jr

LSU Doctoral Dissertations

As the price of liquid asphalt continuously climb, methods are being sought to decrease material costs which will have less impact on ecological systems without compromising material or pavement performance. The use of recycled materials is one method that can replace a percentage of their virgin counterparts, thus reducing the negative impacts on the environment. Asphalt mixture performance is affected by the level of blending that occurs between aged and virgin asphalt binders. The interaction and compatibility of recycling agents (RAs) with recycled asphalt shingles (RAS) and reclaimed asphalt pavements (RAP) have not been thoroughly evaluated since the 1970s. To …

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Facing Reality, Mitchell Patrick Hobbs Jan 2015

Facing Reality, Mitchell Patrick Hobbs

LSU Master's Theses

Facing Reality is a show of landscape paintings and drawings of Baton Rouge, executed mostly through direct observation. Working this way has allowed me to slow down and specifically engage my surroundings and the physical locations that are compelling to me. I am interested in being open to the possibilities provided by experience, and using what I find to create meaningful, honest, and visually poetic pictures.

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Synthesis, Characterization, And Evaluation Of Small Molecule-Based Fluorogenic Probes For The Detection Of Cellular Thiols, Rasika Ranatunga Nawimanage Jan 2015

Synthesis, Characterization, And Evaluation Of Small Molecule-Based Fluorogenic Probes For The Detection Of Cellular Thiols, Rasika Ranatunga Nawimanage

LSU Doctoral Dissertations

Fluorescence methods for disease diagnosis and detection of important analytes are becoming popular route as a technique, as they offer a simple non-invasive approach. Recently, many novel fluorophores and probes have been reported for selectively and sensitively detecting low abundance biological species in disease pathways. Biological thiols, such as glutathione, cysteine, and homocysteine, along with the smallest member hydrogen sulfide, are key thiol analytes in biological environments, and they play a vital role in living systems by maintaining the redox homeostasis of cells. Alteration of their ratios can cause cellular dysfunction and cell death. Furthermore, thiol levels in cells and …

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Distribution And Female Reproductive State Differences In Orexigenic And Anorexigenic Neurons In The Brain Of The Mouthbrooding African Cichlid Fish, Astatotilapia Burtoni, Danielle Tiffany Porter Jan 2015

Distribution And Female Reproductive State Differences In Orexigenic And Anorexigenic Neurons In The Brain Of The Mouthbrooding African Cichlid Fish, Astatotilapia Burtoni, Danielle Tiffany Porter

LSU Master's Theses

The integration of reproduction and metabolism is necessary for the survival and continuation of a species. While the neural circuits controlling energy homeostasis have been well-characterized, the signals controlling the relay of nutritional information to the reproductive axis are not conclusively defined. The cichlid fish Astatotilapia burtoni is ideal for studying the neural regulation of feeding and reproduction because during their parental care phase, females undergo a two-week period of forced starvation while holding developing young in their buccal cavity. To test the hypothesis that candidate neuropeptides known to be involved in feeding and energy homeostasis in mammals show conserved …

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A Descriptive Study Of Teens’ Career Decision-Making Self-Efficacy, Cherie S. Roger Jan 2015

A Descriptive Study Of Teens’ Career Decision-Making Self-Efficacy, Cherie S. Roger

LSU Master's Theses

The purpose of this study is to determine if differences exist between 4-H members and non 4-H members in a south Louisiana parish on career decision making self-efficacy. This study may help youth recognize experiences that help them make career decisions. This was a cross-sectional study designed to describe 4-H and non-4-H members on career decision making self-efficacy. This study describes the information obtained from a one-time pencil/paper survey. All participants will remain anonymous. There was a statistically significant positive association between career decision making outcome expectancy/intentions and goals and years in 4-H as well as total club membership. As …

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Olivier Messiaen's Influence In The Violoncello Works Of Toru Takemitsu, Susannah Violet Montandon Jan 2015

Olivier Messiaen's Influence In The Violoncello Works Of Toru Takemitsu, Susannah Violet Montandon

LSU Doctoral Dissertations

This monograph is an examination of Oliver Messiaen’s influence in the violoncello solo and chamber compositions of Tōru Takemitsu. A total of sixteen pieces: Le Son Calligraphie I (1958), Le Son Calligraphie III (1960), Scene (1959), Landscape (1960), Corona II (1962), Valeria (1969), Quatrain (1975), Quatrain II (1977), Waterways (1978), A Way Alone (1981), Orion for Violoncello and Piano (1984), Orion and Pleiades: Concerto for Violoncello and Orchestra (1984), Entre-Temps (1986), A Solitary Road (1988), Herbstlied (1993), and Between Tides (1993), are studied to determine the degree of Messiaen’s influence. The research is through a cellistic and musicological analysis including …

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Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao Jan 2015

Fermentable Non-Digestible Dietary Fiber And Bioactive Compounds Affect Aging And Fat Deposition In Caenorhabditis Elegans, Chenfei Gao

LSU Doctoral Dissertations

Overweight and obesity have been imposing $147 billion a year to the health care system in the United States. Limited medications are available in the market with side effects. Surgical treatments are second-line obesity treatments. Short chain fatty acids (SCFAs) produced from the fermentable resistant starch improves the secretion of satiety hormones peptide YY (PYY) and glucagon-like peptide 1 (GLP-1) from L-endocrine cells of cecum and colon. We hypothesized that consumption of fermentable non-digestible dietary fiber and bioactive compounds will increase insulin sensitivity, reduce body fat, and improve healthspan in Caenorhabditis elegans (C. elegans), and hyperglycemia (2% glucose) that may …

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Polycyclic Aromatic Hydrocarbons Dynamics In The Northern Gulf Of Mexico, Puspa Lal Adhikari Jan 2015

Polycyclic Aromatic Hydrocarbons Dynamics In The Northern Gulf Of Mexico, Puspa Lal Adhikari

LSU Doctoral Dissertations

Polycyclic aromatic hydrocarbons (PAHs) are introduced into the marine environment via oil seeps/spills, riverine discharges, continental runoff, coastal erosion, and atmospheric deposition. An estimated 2.1 x 1010g of PAHs entered into the northern Gulf of Mexico (GOM) during the Deepwater Horizon (DWH) oil spill in 2010. It became evident following the oil spill that accurate quantification of ultimate fate of these potentially carcinogenic and/or mutagenic organic pollutants is extremely challenging. In general, very little is known about PAHs fate, distribution and accumulation in the open ocean ecosystems. This study determines the upper ocean vertical fluxes and sedimentary PAHs accumulation rates …

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Comparative Genomics Reveals Insights Into Avian Genome Evolution And Adaptation, Guojie Correction Zhang, Cai Li, Qiye Li, Bo Li, Denis M. Larkin, Chul Lee, Jay F. Storz, Agostinho Antunes, Matthew J. Greenwold, Robert W. Meredith, Anders Ödeen, Jie Cui, Qi Zhou, Luohao Xu, Hailin Pan, Zongji Wang, Lijun Jin, Pei Zhang, Haofu Hu, Wei Yang, Jiang Hu, Jin Xiao, Zhikai Yang, Yang Liu, Qiaolin Xie, Hao Yu, Jinmin Lian, Ping Wen, Fang Zhang, Hui Li, Yongli Zeng, Zijun Xiong, Shiping Liu, Long Zhou Dec 2014

Comparative Genomics Reveals Insights Into Avian Genome Evolution And Adaptation, Guojie Correction Zhang, Cai Li, Qiye Li, Bo Li, Denis M. Larkin, Chul Lee, Jay F. Storz, Agostinho Antunes, Matthew J. Greenwold, Robert W. Meredith, Anders Ödeen, Jie Cui, Qi Zhou, Luohao Xu, Hailin Pan, Zongji Wang, Lijun Jin, Pei Zhang, Haofu Hu, Wei Yang, Jiang Hu, Jin Xiao, Zhikai Yang, Yang Liu, Qiaolin Xie, Hao Yu, Jinmin Lian, Ping Wen, Fang Zhang, Hui Li, Yongli Zeng, Zijun Xiong, Shiping Liu, Long Zhou

Faculty Publications

Birds are the most species-rich class of tetrapod vertebrates and have wide relevance across many research fields. We explored bird macroevolution using full genomes from 48 avian species representing all major extant clades. The avian genome is principally characterized by its constrained size, which predominantly arose because of lineage-specific erosion of repetitive elements, large segmental deletions, and gene loss. Avian genomes furthermore show a remarkably high degree of evolutionary stasis at the levels of nucleotide sequence, gene synteny, and chromosomal structure. Despite this pattern of conservation, we detected many non-neutral evolutionary changes in protein-coding genes and noncoding regions. These analyses …

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Whole-Genome Analyses Resolve Early Branches In The Tree Of Life Of Modern Birds, Erich D. Jarvis, Siavash Mirarab, Andre J. Aberer, Bo Li, Peter Houde, Cai Li, Simon Y.W. Ho, Brant C. Faircloth, Benoit Nabholz, Jason T. Howard, Alexander Suh, Claudia C. Weber, Rute R. Da Fonseca, Jianwen Li, Fang Zhang, Hui Li, Long Zhou, Nitish Narula, Liang Liu, Ganesh Ganapathy, Bastien Boussau, Md Shamsuzzoha Bayzid, Volodymyr Zavidovych, Sankar Subramanian, Toni Gabaldón, Salvador Capella-Gutiérrez, Jaime Huerta-Cepas, Bhanu Rekepalli, Kasper Munch, Mikkel Schierup, Bent Lindow, Wesley C. Warren, David Ray, Richard E. Green Dec 2014

Whole-Genome Analyses Resolve Early Branches In The Tree Of Life Of Modern Birds, Erich D. Jarvis, Siavash Mirarab, Andre J. Aberer, Bo Li, Peter Houde, Cai Li, Simon Y.W. Ho, Brant C. Faircloth, Benoit Nabholz, Jason T. Howard, Alexander Suh, Claudia C. Weber, Rute R. Da Fonseca, Jianwen Li, Fang Zhang, Hui Li, Long Zhou, Nitish Narula, Liang Liu, Ganesh Ganapathy, Bastien Boussau, Md Shamsuzzoha Bayzid, Volodymyr Zavidovych, Sankar Subramanian, Toni Gabaldón, Salvador Capella-Gutiérrez, Jaime Huerta-Cepas, Bhanu Rekepalli, Kasper Munch, Mikkel Schierup, Bent Lindow, Wesley C. Warren, David Ray, Richard E. Green

Faculty Publications

To better determine the history of modern birds, we performed a genome-scale phylogenetic analysis of 48 species representing all orders of Neoaves using phylogenomic methods created to handle genome-scale data.We recovered a highly resolved tree that confirms previously controversial sister or close relationships.We identified the first divergence in Neoaves, two groups we named Passerea and Columbea, representing independent lineages of diverse and convergently evolved land and water bird species. Among Passerea, we infer the common ancestor of core landbirds to have been an apex predator and confirm independent gains of vocal learning. Among Columbea, we identify pigeons and flamingoes as …

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Membrane Potential-Dependent Integration Of Synaptic Inputs In Entorhinal Stellate Neurons., Economo Mn, Martínez Jj, White Ja Dec 2014

Membrane Potential-Dependent Integration Of Synaptic Inputs In Entorhinal Stellate Neurons., Economo Mn, Martínez Jj, White Ja

Faculty Publications

No abstract provided.

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Faculty Senate Newsletter, Holiday 2014, Louisiana State University And Agricultural & Mechanical College Dec 2014

Faculty Senate Newsletter, Holiday 2014, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: Christmas, as it was called before it became a generic all-purpose “holiday,” is, at least in the propaganda of western cultures, all about universality: about the day when, so it seemed, the whole world lay at rest, when benefactions went out, if not to all mankind, at least to those on Santa’s good-person list. Christmas, indeed most any winter holiday, depends on the mass distribution of information: on everyone learning (a) that this is the day to keep calm and (b) what it is—what is the cultural and philosophical context—for at least a temporary peace. Everybody’s favorite …

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Photoperiod And Temperature Effects On The Adult Eclosion And Mating Rhythms In Pseudopidorus Fasciata (Lepidoptera: Zygaenidae), Shaohui Wu, Roberto Refinetti, Loke T. Kok, Roger R. Youngman, Gadi V.P. Reddy, Fang Sen Xue Dec 2014

Photoperiod And Temperature Effects On The Adult Eclosion And Mating Rhythms In Pseudopidorus Fasciata (Lepidoptera: Zygaenidae), Shaohui Wu, Roberto Refinetti, Loke T. Kok, Roger R. Youngman, Gadi V.P. Reddy, Fang Sen Xue

Faculty Publications

Daily distributions of eclosion and mating activities of Pseudopidorus fasciata Walker (Lepidoptera: Zygaenidae) were recorded under natural and various laboratory conditions. Eclosion of this insect exhibited circadian gating in constant darkness (DD) but not in constant light (LL) at 28°C. Under natural conditions, the majority of adults emerged in midmorning with an eclosion peak around 1000 hours. The eclosion distribution was significantly affected by ambient temperature but not by photoperiod under laboratory conditions. Eclosion was more spread out at 22°C than at higher temperatures, and peak eclosion times were advanced at higher temperatures up to 30°C. Under natural and laboratory …

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Experimental Translocations: Pitfalls And Alternatives For Quantifying Animal Movement In Fragmented Landscapes, Luke L. Powell, Philip C. Stouffer Dec 2014

Experimental Translocations: Pitfalls And Alternatives For Quantifying Animal Movement In Fragmented Landscapes, Luke L. Powell, Philip C. Stouffer

Faculty Publications

As anthropogenic change continues to fragment terrestrial habitats, conservation biologists are increasingly concerned with how wild animals move through fragmented landscapes. Experimental translocations have recently gained popularity as a technique to determine landscape permeability by wild animals in fragmented landscapes. In experimental translocations, researchers capture individuals — usually adults — and release them elsewhere in order to determine whether they are able to cross the landscape and return to their original location. We argue that most experimental translocations have two inherent confounding factors — age of the individual and homing ability — and that the narrow spatiotemporal scale of the …

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Step Selection Techniques Uncover The Environmental Predictors Of Space Use Patterns In Flocks Of Amazonian Birds, Jonathan R. Potts, Karl Mokross, Philip C. Stouffer, Mark A. Lewis Dec 2014

Step Selection Techniques Uncover The Environmental Predictors Of Space Use Patterns In Flocks Of Amazonian Birds, Jonathan R. Potts, Karl Mokross, Philip C. Stouffer, Mark A. Lewis

Faculty Publications

Understanding the behavioral decisions behind animal movement and space use patterns is a key challenge for behavioral ecology. Tools to quantify these patterns from movement and animal-habitat interactions are vital for transforming ecology into a predictive science. This is particularly important in environments undergoing rapid anthropogenic changes, such as the Amazon rainforest, where animals face novel landscapes. Insectivorous bird flocks are key elements of avian biodiversity in the Amazonian ecosystem. Therefore, disentangling and quantifying the drivers behind their movement and space use patterns is of great importance for Amazonian conservation. We use a step selection function (SSF) approach to uncover …

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