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Denis Diderot's Anglophilia And Its Impact Upon His Salons, William Judson Jan 2017

Denis Diderot's Anglophilia And Its Impact Upon His Salons, William Judson

LSU Master's Theses

The work of Enlightenment philosophe Denis Diderot went largely unpublished during his lifetime, and upon its discovery in the nineteenth century, his originality was overlooked because of the perceived quaintness of his tastes. Thankfully, as his body of work became better understood and more accessible, his reputation steadily improved. The discipline of literary art criticism is now thought of as having its origins in Diderot’s Salons, a series of letters containing his thoughts on the French Royal Academy of Painting and Sculpture’s biennial exhibitions in the Palace of the Louvre. These were circulated among an elite clientele who were not …

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Discursos Contrasexuales: Subversiones Queer, Stephanie Colin Jan 2017

Discursos Contrasexuales: Subversiones Queer, Stephanie Colin

LSU Master's Theses

Judith Butler argues that gender is a performative cultural construction; this analysis is taken to further means of discussion in reference to the revelation of sex and gender as both cultural and social constructions. Sex and gender appear as a result of heteornormative regulations imposed onto social actors, arguing that these constructions are essences naturally attached to the human body. The constructions of the sex/gender system are inflicted by a regulative discourse. In the heterocentric society this discursive control is implemented through social norms which enforce male with masculinity and female with femininity. Through various analyses of contra-hegemonic cultural and …

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Dig, Spin, Repeat, Brittany Anne Sievers Jan 2017

Dig, Spin, Repeat, Brittany Anne Sievers

LSU Master's Theses

Dig, Spin, Repeat, is a body of process based installation objects that uses minimalistic aesthetics placed strategically in the gallery to highlight the architecture of the room. By connecting these unique architectural elements, the work aims to achieve mindfulness similar to the research of Ellen Langer: encouraging active observation. Drawing from my background in sports and factory work, I create multiple repetitive forms out of hand-spun yarn and sourced clay. The room-sized installation objects produced from these raw materials explore the value of staying in the present moment for both the viewer and myself.

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"Things Not Seen" In The Frescoes Of Giotto: An Analysis Of Illusory And Spiritual Depth, Aaron Hubbell Jan 2017

"Things Not Seen" In The Frescoes Of Giotto: An Analysis Of Illusory And Spiritual Depth, Aaron Hubbell

LSU Master's Theses

This research explores Giotto di Bondone's (1266-1337) use of empty and concealed space as a means of implying psychological and spiritual concepts. Focused on his narrative frescoes, this project borrows from art historian Mary Pardo's analysis of the Arena Chapel frescoes as examples of Giotto's ingegno, or visual wit. Giotto conveys the emotional and psychological state of his figures as well as the presence of the divine through spatial and architectural divisions between figure groups and the suggestion of narrative elements outside of the viewers' perspective. Along with close visual analysis, this thesis draws on art historical literature on the …

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After;Life, Morgan Lynn Anderson Jan 2017

After;Life, Morgan Lynn Anderson

LSU Master's Theses

After;life is an exploration of the time and space between life and death. The installation, created from dozens of woodcut prints, creates this imaginary place, and encompasses viewers through sight, smell, sound, and touch. All elements of this installation are heavily influenced by Southern Louisiana culture and wildlife, and are meant to be familiar enough to provoke personal memory and experience. A set of rituals in the form of three poems, corresponding to three different spirit guides: The Black Dog, The Alligator, and The Opossum, lead the reader through the space from life, through liminal, into death.

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Estimation Of Rfid Tag Population Size By Gaussian Estimator, Md Mahmudul Hasan Jan 2017

Estimation Of Rfid Tag Population Size By Gaussian Estimator, Md Mahmudul Hasan

LSU Master's Theses

Radio Frequency IDenti cation (RFID) systems are prevalent in all sorts of daily life endeavors. In this thesis we propose a new method to estimate RFID tag population size. We have named our algorithm "Gaussian Estimation of RFID Tags,"namely, GERT. We present GERT under both {0,1} and {0,1,e} channel models, and in both cases the estimator we use is a well justi ed Gaussian random variable for large enough frame size based on Central Limit Theorem for triangular arrays. The most prominent feature of GERT is the quality with which it estimates a tag population size. We support all the …

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A Comparative Study Of The Effects Of River Flow Rates On Decomposition, Maddisen Paige Neuman Jan 2017

A Comparative Study Of The Effects Of River Flow Rates On Decomposition, Maddisen Paige Neuman

LSU Master's Theses

While the general biological processes of decomposition are known to forensic anthropologists, data on aquatic decomposition is in need of refinement. Water composition varies in mineral content, temperature, flow rate, and scavengers; each of these elements can have an effect on the rate of decomposition. This study specifically focuses on the effects of river flow rates on decomposition by comparing the rate of decay of three feral pigs (Sus scrofa) on land (control specimen), in faster flowing water, and in slower flowing water. The hypothesis states that the pig placed in the faster section of the river will decompose more …

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Effects Of Timing Of Local Anesthesia On Physiological Responses In Calves After Dehorning, Amanda Jane Mathias Jan 2017

Effects Of Timing Of Local Anesthesia On Physiological Responses In Calves After Dehorning, Amanda Jane Mathias

LSU Master's Theses

The American Veterinary Medical Association has stated the importance of minimizing pain associated with dehorning to limit the amount of distress and changes in the animal’s behavior and physiological states (AVMA, 2014b). The following studies aim to determine the effect of timing of lidocaine administration on physiological responses in calves after dehorning. The first study compared cortisol and substance P levels in calves dehorned immediately after administration of lidocaine and meloxicam, calves dehorned 10 minutes after the administration of lidocaine and meloxicam, and calves that were administered lidocaine and meloxicam and not dehorned. It was concluded waiting 10 minutes after …

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Louisiana Birds Act As Reservoirs For Antibiotic-Resistant Bacteria, Collin T. Brown Jan 2017

Louisiana Birds Act As Reservoirs For Antibiotic-Resistant Bacteria, Collin T. Brown

LSU Master's Theses

Wild birds carry diverse microbial communities, including antibiotic-resistant bacteria (ARB). With the ever-increasing use of antibiotics in agricultural and clinical settings, genes that code for antibiotic resistance in bacteria have been selected for. These bacteria persist in the environment in a culturable state, but little is understood about communities of antibiotic-resistant bacteria in the environment. Birds with predictable behaviors may serve as useful indicators of these communities, and provide insights into how bacterial communities spread and evolve in the environment. To understand the utility of birds as indicators of the presence of antibiotic-resistant bacteria in the environment, we collected bacterial …

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Oblivion, Michael Stumbras Jan 2017

Oblivion, Michael Stumbras

LSU Master's Theses

I am fascinated by the myriad ways humans construct meaning in the face of existential uncertainty. For the exhibition Oblivion, I endeavor to provide a gallery experience, a body of metaphorically charged functional vessels, and a number of ritualistic accoutrements that address death, futility, and the passage of time as it inexorably flows toward obsolescence. The process of handcraft and the method of firing that I employ highlights the absurdity of the endeavor of the handmade: the seemingly futile and interminable quest for perfection and meaning. This futilitarian pottery exaggerates the errors of the hand and flaunts artifacts of the …

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Convergent Styles: A Study Of Dave Brubeck's Points On Jazz, Ethan Loyd Rogers Jan 2017

Convergent Styles: A Study Of Dave Brubeck's Points On Jazz, Ethan Loyd Rogers

LSU Doctoral Dissertations

The music of Dave Brubeck encompasses diverse classical and jazz styles from around the world. Due to the eclectic nature of Brubeck’s music and the difficulty in categorizing his style, little has been written about his compositions. This document will aid musicians in better understanding his suite Points on Jazz, a work for classical piano.

The first chapter examines the development of Brubeck’s style from his early childhood years until 1958, the year he composed Points on Jazz. The second chapter details the background of this piece and some of its influences, including Dziekuje, the piece upon which Points on …

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Pesticide Concentrations In Water From A Southern Louisiana Marsh Influenced By The Mississippi River, Kara Leigh Callicott Jan 2017

Pesticide Concentrations In Water From A Southern Louisiana Marsh Influenced By The Mississippi River, Kara Leigh Callicott

LSU Master's Theses

The pesticides atrazine, chlorothalonil, and fipronil are common surface water contaminants due to their high rates of application and their chemical properties. This study investigates the introduction of contaminants into coastal wetlands via the Bayou Lamoque Mississippi River control structure in Plaquemines Parish, Louisiana. A protocol for environmental sampling using Continuous Low-level Aquatic Monitoring (C.L.A.M.) C-18 disks is described, along with effective solid phase extraction (SPE) and gas chromatography mass spectrometry (GC/MS) methodology for the determination of atrazine, chlorothalonil, and fipronil in surface water. Average concentrations of atrazine and chlorothalonil inside the Bayou Lamoque freshwater diversion structure for the months …

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Collecting And Selecting, Masy Hebert Jan 2017

Collecting And Selecting, Masy Hebert

LSU Master's Theses

In Collecting and Selecting, I am exploring the way others adorn their lives and how these elements add up to emblematize the keeper of the treasures. With linoleum relief prints and drawings, I compose a unique type of portraiture that reveals the parallel identity between the way we dress ourselves and our living spaces. Within my process, I capture moments with photographs, draw, carve, print, and cut out the elements that hold a presence of the owner. Utilizing a heightened sense of contrast with black and white images, the textures and details of these objects come alive. Each gallery wall …

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How American Is The American College Fraternity? Examining The European Legacy Within The U.S. Greek System, Andrew Thomas Bell Jan 2017

How American Is The American College Fraternity? Examining The European Legacy Within The U.S. Greek System, Andrew Thomas Bell

LSU Master's Theses

In this study, a cultural dissemination model is used to identify the cultural markers a fraternalism across multiple educational environments all in an attempt to answer the question “How American is the American college fraternity?” Aspects of modern fraternities and sororities were broken down and their historical predecessors were identified in order to track cultural dissemination, or diffusion. “Diffusion is the spread of culture traits and, as Wissler (140,146) and Bartlett (7) have demonstrated, this spread may be either conscious or unconscious” (Willey & Herskovits, 1927, p. 263). Primarily systems the broad European Fraternalism, European Universities (German and English), American …

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One Two One, Brianna Morgan Ozanne Jan 2017

One Two One, Brianna Morgan Ozanne

LSU Master's Theses

These things, they speak in whispers. Come close, lean in, listen up. Whisper back. Tell me everything. I know you’ve been here, too. I know you’ll understand. I know you have a shoebox full of memories just like these hidden deep inside your closet. I know.

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A Presynaptic Role For Nitric Oxide At A Gabaergic Synapse, John Wesley Maddox Jan 2017

A Presynaptic Role For Nitric Oxide At A Gabaergic Synapse, John Wesley Maddox

LSU Doctoral Dissertations

Amacrine cells are a class of retinal interneurons that process the visual signal in the inner retina. Several subtypes of amacrine cells express nitric oxide synthase and produce nitric oxide (NO), making NO a possible regulator of amacrine cell function. My dissertation research tests the hypothesis that NO alters amacrine cell GABAergic synaptic output. To investigate this, I made whole-cell voltage clamp recordings of cultured chick amacrine cells receiving synaptic input from other amacrine cells and Ca2+ imaging of amacrine cell dendrites, which can be presynaptic. I find that NO-dependent increases in GABAergic spontaneous postsynaptic current (sPSC) frequency are …

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Condition Of Birds In Amazonian Rainforest Fragments And Second-Growth Forests, Angelica Maria Hernandez Palma Jan 2017

Condition Of Birds In Amazonian Rainforest Fragments And Second-Growth Forests, Angelica Maria Hernandez Palma

LSU Doctoral Dissertations

Deforestation modifies otherwise intact expanses of forest into small, isolated fragments. In addition to fragmentation, deforestation also creates abrupt forest edges and large areas of regenerating vegetation where land is abandoned after clearing. Understanding how changes in the landscape affect the physical condition of birds is crucial for managing populations in human-modified landscapes. Here I use the biomarkers feather growth rate and feather quality (ptilochronology), fluctuating asymmetry (FA), and stress hormones from feathers (CORT), to estimate the physical condition of Amazonian understory birds living in forest fragments, second-growth forests, and continuous forests. Feather CORT revealed how fragmentation disrupts interspecific interactions; …

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Pots, Pans, And Politics: Feasting In Early Horizon Nepeña, Peru, Kenneth Edward Sutherland Jan 2017

Pots, Pans, And Politics: Feasting In Early Horizon Nepeña, Peru, Kenneth Edward Sutherland

LSU Master's Theses

This thesis explores Early Horizon (900 – 200 BCE) feasting practices visible through the pottery assemblage at three archaeological complexes in the lower Nepeña Valley, north-central coast of Peru. Ceramic vessels were used for production, transportation, and storage of foods consumed for daily subsistence and during feasting events at the settlement of Caylán, a large town or city interpreted as the primary center of a multi-tiered polity. Secondary settlements at Samanco, a small coastal town, and Huambacho, an elite ceremonial center, indicate the complexity of this polity. Analysis of ceramic rim sherds reveals the types of vessels used at these …

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The Effects Of Chemical Reagents And Physical Environment On The In Vitro And In Vivo Properties Of Adipose-Derived Multipotent Stromal Cells Isolated From Different Species, Wei Duan Jan 2017

The Effects Of Chemical Reagents And Physical Environment On The In Vitro And In Vivo Properties Of Adipose-Derived Multipotent Stromal Cells Isolated From Different Species, Wei Duan

LSU Doctoral Dissertations

Adult adipose derived mesenchymal stromal cells (ASCs) have been characterized in various species. Many factors may affect ASC fate and ASCs from different species may have different response to these factors. The first study was to identify the differences of the canine ASCs isolated from subcutaneous and infrapatellar adipose tissues, and evaluate the impact of cryopreservation on the cells. Based on paired comparisons of fresh and cryopreserved ASCs, cryopreserved ASCs had lower CD29 and CD44 protein expression and lower proliferation rates. The cryopreserved ASCs had relative lower mitochondria in the cytoplasm compared to the fresh ASCs regardless of tissue sources. …

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Fibroblast Growth Factor 21 Is A Novel Protein Sensor In Pregnancy, Elizabeth Frost Sutton Jan 2017

Fibroblast Growth Factor 21 Is A Novel Protein Sensor In Pregnancy, Elizabeth Frost Sutton

LSU Doctoral Dissertations

The twenty-first century has experienced a shift in cause of death worldwide from communicable diseases to noncommunicable diseases. Interestingly, many of these implicated chronic diseases, such as cancer, diabetes, and cardiovascular disease, have been shown to be programmed in the womb. As first posited by the Barker Hypothesis, adverse exposures in utero can increase an individual’s risk for chronic disease later in life. Therefore, pregnancy is an opportune time for intervention to improve the health of future generations. Studies of exposures known to negatively impact infant health, e.g. states of overnutrition (obesity, diabetes, excess gestational weight gain) and undernutrition (starvation, …

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Human Gut Microbiota And Obesity: How Is Gut Microbiota Associated With Obesity Improvement Induced By Bariatric Surgeries Or Low-Calorie Diet Treatment?, Rui Zhang Jan 2017

Human Gut Microbiota And Obesity: How Is Gut Microbiota Associated With Obesity Improvement Induced By Bariatric Surgeries Or Low-Calorie Diet Treatment?, Rui Zhang

LSU Doctoral Dissertations

An increasing number of studies suggest that the complex microbial community of the human gut may have an important role in human health and disease conditions such as obesity and diabetes. However, the causal relationship among gut microbiota, obesity, weight loss, and the influence of bariatric surgery remains largely unknown. This study investigated the correlation between human gut microbiota and obesity via determining how gut microbiota is associated with obesity improvement induced by bariatric surgeries (BRS) and low-calorie diet (LCD) treatment. Specifically, we investigated the effects of various bariatric surgery (BRS) procedures and a low-calorie diet (LCD) treatment on the …

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The Effect Of Rule-Based Scaffoldings On Second Grade Students' Digital Storytelling, Xue Wen Jan 2017

The Effect Of Rule-Based Scaffoldings On Second Grade Students' Digital Storytelling, Xue Wen

LSU Doctoral Dissertations

Digital storytelling is a powerful method for revitalizing literacy instruction. Past research suggested that digital storytelling activities improve students’ writing skills through construction of various types of stories. However, little research has investigated in what ways educators can promote students’ interests and actual abilities to express narrative discourse in a digital format. Recent research indicated that the use of story grammars help students develop sophisticated stories. From this perspective, Labov’s story grammar emphasized two functions of good story structure: reference—the listeners (or readers) are told what happened, and evaluation—the speakers (or writers) reveal their attitude toward the events of the …

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The Roles Of Avr4 In Fungal Virulence,Cercosporin Biosynthesis And Its Potential Use In Host Induced Gene Silencing For Controlling Cercospora Leaf Blight Disease Of Soybeans, Josielle Santos Rezende Jan 2017

The Roles Of Avr4 In Fungal Virulence,Cercosporin Biosynthesis And Its Potential Use In Host Induced Gene Silencing For Controlling Cercospora Leaf Blight Disease Of Soybeans, Josielle Santos Rezende

LSU Doctoral Dissertations

The AVR4 effector, secreted by Cladosporium fulvum, has been demonstrated to be involved in pathogen virulence. Recent studies further demonstrated that Avr4 is highly conserved among several Cercospora species, indicating a potential important role of this gene in fungal virulence. Therefore, investigation to determine whether this fungal effector gene is present in Cercospora cf. flagellaris (previously known as C. kikuchii), the causal agent of soybean cercospora leaf blight (CLB) disease, and whether it plays any role in CLB disease development, is of great interest. In the present study, the Avr4 gene from C. cf. flagellaris was cloned and mutants lacking …

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Immigration, Ethnicity, And Citizenship: The Words And Faces Of The Chinese Of North America, Pengyi Huang Jan 2017

Immigration, Ethnicity, And Citizenship: The Words And Faces Of The Chinese Of North America, Pengyi Huang

LSU Doctoral Dissertations

In this dissertation, I have analyzed the migrant experience of Chinese immigrants in North America through their representation in literature and photography. Each of its three chapters focuses on three major ethnic issues affecting the lives and identity of Chinese immigrants and their offspring in North America: the first concerns the ways in which occupation, home, and family affect the destinies of Chinese immigrants; the second deals with the role of language in the lives of Chinese immigrants and the career of Chinese migrant writers; the third addresses stereotypes about Chinese immigrants and their offspring and the redefinition of their …

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Faculty Senate Newsletter, December 2016, Louisiana State University And Agricultural & Mechanical College Dec 2016

Faculty Senate Newsletter, December 2016, Louisiana State University And Agricultural & Mechanical College

LSU Faculty Senate Publications

Message from President: Ingeniously positioned in a way that can only be accomplished through centuries of cultural evolution, Christmas occurs near the longest, darkest night of the year so as to suggest that even a small ray of light shines brightest when piercing the gloom. However severe the shortage of light around the yuletide, it never rivals the acute dimness of that social counterpart to night, blacklisting. With the advent of web sites such as Professor Watch List, an organization that stigmatizes dissenting professors and encourages students to reconnoiter them, blacklisting is much in the news these days, and rightly …

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Peg3 Binds To H19-Icr As A Transcriptional Repressor, An Ye, Hongzhi He, Joomyeong Kim Dec 2016

Peg3 Binds To H19-Icr As A Transcriptional Repressor, An Ye, Hongzhi He, Joomyeong Kim

Faculty Publications

© 2016 Taylor & Francis Group, LLC. Paternally expressed gene 3 (Peg3) encodes a DNA-binding protein with 12 C2H2 zinc finger motifs. In the current study, we performed ChIP-seq using mouse embryonic fibroblast (MEF) cells. This experiment identified a set of 16 PEG3 genomic targets, the majority of which overlapped with the promoter regions of genes with oocyte expression. These potential downstream genes were upregulated in MEF cells lacking PEG3 protein, suggesting a potential repressor role for PEG3. Our study also identified the imprinting control region (ICR) of H19 as a genomic target. According to the results, PEG3 binds to …

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A Review Of The Tawny Crazy Ant, Nylanderia Fulva, An Emergent Ant Invader In The Southern United States: Is Biological Control A Feasible Management Option?, Zinan Wang, Lori Moshman, Emily C. Kraus, Blake E. Wilson, Namoona Acharya, Rodrigo Diaz Dec 2016

A Review Of The Tawny Crazy Ant, Nylanderia Fulva, An Emergent Ant Invader In The Southern United States: Is Biological Control A Feasible Management Option?, Zinan Wang, Lori Moshman, Emily C. Kraus, Blake E. Wilson, Namoona Acharya, Rodrigo Diaz

Faculty Publications

© 2016 by the authors; licensee MDPI, Basel, Switzerland. The tawny crazy ant, Nylanderia fulva (Mayr) (Hymenoptera: Formicidae), has invaded states of the U.S. including Texas, Louisiana, Mississippi, Alabama, Florida, and Georgia. Native to South America, N. fulva is considered a pest in the U.S. capable of annoying homeowners and farmers, as well as displacing native ant species. As it continues to expand its range, there is a growing need to develop novel management techniques to control the pest and prevent further spread. Current management efforts rely heavily on chemical control, but these methods have not been successful. A review …

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Crapemyrtle Bark Scale: A New Threat For Crapemyrtles, A Popular Landscape Plant In The U.S, Zinan Wang, Yan Chen, Mengmeng Gu, Erfan Vafaie, Michael Merchant, Rodrigo Diaz Dec 2016

Crapemyrtle Bark Scale: A New Threat For Crapemyrtles, A Popular Landscape Plant In The U.S, Zinan Wang, Yan Chen, Mengmeng Gu, Erfan Vafaie, Michael Merchant, Rodrigo Diaz

Faculty Publications

© 2016 by the authors; licensee MDPI, Basel, Switzerland. Crapemyrtle bark scale, Acanthococcus (=Eriococcus) lagerstroemiae (Kuwana) (Hemiptera: Eriococcidae), is a newly introduced insect pest on crapemyrtles, Lagerstroemia spp. (Myrtales: Lythraceae), one of the most popular flowering shrubs in the U.S. Since first detected in Texas in 2004, this pest has spread to twelve states causing losses to stakeholders. To develop a management plan, we reviewed current knowledge about the pest’s biology and ecology, and suggested research approaches including studying its thermal tolerance, host range, plant resistance and biological control. Parasitoids and predators have been reared from A. lagerstroemiae in the …

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Campaign 9 Of The K2 Mission: Observational Parameters, Scientific Drivers, And Community Involvement For A Simultaneous Space-And Ground-Based Microlensing Survey, Calen B. Henderson, Radosław Poleski, Matthew Penny, Rachel A. Street, David P. Bennett, David W. Hogg, B. Scott Gaudi, W. Zhu, T. Barclay, G. Barentsen, S. B. Howell, F. Mullally, A. Udalski, M. K. Szymański, J. Skowron, P. Mróz, S. Kozłowski, Wyrzykowski, P. Pietrukowicz, I. Soszyński, K. Ulaczyk, M. Pawlak, T. Sumi, F. Abe, Y. Asakura, R. K. Barry, A. Bhattacharya, I. A. Bond, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, Y. Itow Dec 2016

Campaign 9 Of The K2 Mission: Observational Parameters, Scientific Drivers, And Community Involvement For A Simultaneous Space-And Ground-Based Microlensing Survey, Calen B. Henderson, Radosław Poleski, Matthew Penny, Rachel A. Street, David P. Bennett, David W. Hogg, B. Scott Gaudi, W. Zhu, T. Barclay, G. Barentsen, S. B. Howell, F. Mullally, A. Udalski, M. K. Szymański, J. Skowron, P. Mróz, S. Kozłowski, Wyrzykowski, P. Pietrukowicz, I. Soszyński, K. Ulaczyk, M. Pawlak, T. Sumi, F. Abe, Y. Asakura, R. K. Barry, A. Bhattacharya, I. A. Bond, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, Y. Itow

Faculty Publications

K2ʼs Campaign 9 (K2C9) will conduct a ∼3.7 deg2 survey toward the Galactic bulge from 2016 April 22 through July 2 that will leverage the spatial separation between K2 and the Earth to facilitate measurement of the microlens parallax πE for ≳170 microlensing events. These will include several that are planetary in nature as well as many short-timescale microlensing events, which are potentially indicative of free-floating planets (FFPs). These satellite parallax measurements will in turn allow for the direct measurement of the masses of and distances to the lensing systems. In this article we provide an overview of the K2C9 …

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Evolutionary Innovation And Diversification Of Carotenoid-Based Pigmentation In Finches, Russell A. Ligon, Richard K. Simpson, Nicholas A. Mason, Geoffrey E. Hill, Kevin J. Mcgraw Dec 2016

Evolutionary Innovation And Diversification Of Carotenoid-Based Pigmentation In Finches, Russell A. Ligon, Richard K. Simpson, Nicholas A. Mason, Geoffrey E. Hill, Kevin J. Mcgraw

Faculty Publications

© 2016 The Author(s). Evolution © 2016 The Society for the Study of Evolution. The ornaments used by animals to mediate social interactions are diverse, and by reconstructing their evolutionary pathways we can gain new insights into the mechanisms underlying ornamental innovation and variability. Here, we examine variation in plumage carotenoids among the true finches (Aves: Fringillidae) using biochemical and comparative phylogenetic analyses to reconstruct the evolutionary history of carotenoid states and evaluate competing models of carotenoid evolution. Our comparative analyses reveal that the most likely ancestor of finches used dietary carotenoids as yellow plumage colorants, and that the ability …

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