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Large Scale Patterns Of Genetic Variation And Differentiation In Sugar Maple From Tropical Central America To Temperate North America, Yalma L. Vargas-Rodriguez, William J. Platt, Lowell E. Urbatsch, David W. Foltz Nov 2015

Large Scale Patterns Of Genetic Variation And Differentiation In Sugar Maple From Tropical Central America To Temperate North America, Yalma L. Vargas-Rodriguez, William J. Platt, Lowell E. Urbatsch, David W. Foltz

Faculty Publications

© 2015 Vargas-Rodriguez et al. Background: Geological events in the latter Cenozoic have influenced the distribution, abundance and genetic structure of tree populations in temperate and tropical North America. The biogeographical history of temperate vegetation that spans large ranges of latitude is complex, involving multiple latitudinal shifts that might have occurred via different migration routes. We determined the regional structuring of genetic variation of sugar maple (Acer saccharum subsp. saccharum) and its only subspecies in tropical America (Acer saccharum subsp. skutchii) using nuclear and chloroplast data. The studied populations span a geographic range from Maine, USA (46°N), to El Progreso, …

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Updating Models For Restoration And Management Of Fiery Ecosystems, Jennifer M. Fill, William J. Platt, Shane M. Welch, Jayme L. Waldron, Timothy A. Mousseau Nov 2015

Updating Models For Restoration And Management Of Fiery Ecosystems, Jennifer M. Fill, William J. Platt, Shane M. Welch, Jayme L. Waldron, Timothy A. Mousseau

Faculty Publications

© 2015 Elsevier B.V. Scientific models that guide restoration/management protocols should be reviewed periodically as new data become available. We examine ecological concepts used to guide restoration of pine savannas and woodlands, historically prominent but now rare habitats in the southern North American Coastal Plain. For many decades, pine savanna management has been guided predominantly by a biome-centric succession model. Pine savannas have been considered early-successional communities that, in the absence of fire, transition rapidly toward closed-canopy hardwood forests. Recurrent fires have been viewed as exogenous disturbances that maintain savanna ecosystems as a sub-climax, blocking succession to an equilibrium steady …

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Equation Of Motion Coupled Cluster Methods For Electron Attachment And Ionization Potential In Polyacenes, Kiran Bhaskaran-Nair, Karol Kowalski, Mark Jarrell, Juana Moreno, William A. Shelton Nov 2015

Equation Of Motion Coupled Cluster Methods For Electron Attachment And Ionization Potential In Polyacenes, Kiran Bhaskaran-Nair, Karol Kowalski, Mark Jarrell, Juana Moreno, William A. Shelton

Faculty Publications

Polyacenes have attracted considerable attention due to their various applications in organic optoelectronic materials. This study focuses on linear polyacenes and their electron affinity (EA) and ionization potential (IP) properties. We have employed our recent implementation of EA/IP equation of motion coupled cluster singles and doubles (EA/IP-EOMCCSD) methods which are accurate, computationally efficient and are capable of treating large systems employing reasonable basis sets size. The EA/IP results obtained for naphthalene, anthracene, tetracene, pentacene, hexacene and heptacene are in a good agreement with experiment. Comparison between quality of excitation energies obtained from IP-EOMCCSD and EE-EOMCCSD formalisms were also studied.

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Deepsat - A Learning Framework For Satellite Imagery, Saikat Basu, Sangram Ganguly, Supratik Mukhopadhyay, Robert Dibiano, Manohar Karki, Ramakrishna Nemani Nov 2015

Deepsat - A Learning Framework For Satellite Imagery, Saikat Basu, Sangram Ganguly, Supratik Mukhopadhyay, Robert Dibiano, Manohar Karki, Ramakrishna Nemani

Faculty Publications

Satellite image classification is a challenging problem that lies at the crossroads of remote sensing, computer vision, and machine learning. Due to the high variability inherent in satellite data, most of the current object classification approaches are not suitable for handling satellite datasets. The progress of satellite image analytics has also been inhibited by the lack of a single labeled highresolution dataset with multiple class labels. The contributions of this paper are twofold - (1) first, we present two new satellite datasets called SAT-4 and SAT-6, and (2) then, we propose a classification framework that extracts features from an input …

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Resonant Interneurons Can Increase Robustness Of Gamma Oscillations., Tikidji-Hamburyan Ra, Martínez Jj, White Ja, Canavier Cc Nov 2015

Resonant Interneurons Can Increase Robustness Of Gamma Oscillations., Tikidji-Hamburyan Ra, Martínez Jj, White Ja, Canavier Cc

Faculty Publications

No abstract provided.

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Short-Term Effects Of Herbicides And A Prescribed Fire On Restoration Of A Shrub-Encroached Pine Savanna, William J. Platt, Alex K. Entrup, Emily K. Babl, Cody Coryell-Turpin, Viet Dao, James A. Hebert, Claire D. Labarbera, Jené F.L. Noto, Similoluwa O. Ogundare, Lucas K. Stamper, Nabin Timilsina Nov 2015

Short-Term Effects Of Herbicides And A Prescribed Fire On Restoration Of A Shrub-Encroached Pine Savanna, William J. Platt, Alex K. Entrup, Emily K. Babl, Cody Coryell-Turpin, Viet Dao, James A. Hebert, Claire D. Labarbera, Jené F.L. Noto, Similoluwa O. Ogundare, Lucas K. Stamper, Nabin Timilsina

Faculty Publications

© 2015 Society for Ecological Restoration. Shrub encroachment occurring worldwide in savannas and grasslands has commonly been hypothesized to result from anthropogenically altered environments. Two disturbance-based approaches to restoration have involved: (1) application of selective herbicides to reduce density/cover of shrubs; (2) reinstatement of natural fire regimes to generate environmental conditions favoring herbaceous species. We studied short-term responses of native shrubs, vines, and grasses in a Louisiana pine savanna to herbicides followed by a prescribed fire and fire alone. Plots established in the summer, 2013, were hand-sprayed in the fall with Imazapyr and Triclopyr, Triclopyr alone, or no herbicide, then …

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Fetal Programming In Meat Production, Min Du, Bo Wang, Xing Fu, Qiyuan Yang, Mei Jun Zhu Nov 2015

Fetal Programming In Meat Production, Min Du, Bo Wang, Xing Fu, Qiyuan Yang, Mei Jun Zhu

Faculty Publications

© 2015 Elsevier Ltd. Nutrient fluctuations during the fetal stage affects fetal development, which has long-term impacts on the production efficiency and quality of meat. During the early development, a pool of mesenchymal progenitor cells proliferate and then diverge into either myogenic or adipogenic/fibrogenic lineages. Myogenic progenitor cells further develop into muscle fibers and satellite cells, while adipogenic/fibrogenic lineage cells develop into adipocytes, fibroblasts and resident fibro-adipogenic progenitor cells. Enhancing the proliferation and myogenic commitment of progenitor cells during fetal development enhances muscle growth and lean production in offspring. On the other hand, promoting the adipogenic differentiation of adipogenic/fibrogenic progenitor …

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Functional Conservation In The Siamese-Related Family Of Cyclin-Dependent Kinase Inhibitors In Land Plants, Narender Kumar, Hirofumi Harashima, Shweta Kalve, Jonathan Bramsiepe, Kai Wang, Bulelani L. Sizani, Laura L. Bertrand, Matthew C. Johnson, Christopher Faulk, Renee Dale, L. Alice Simmons, Michelle L. Churchman, Keiko Sugimoto, Naohiro Kato, Maheshi Dasanayake, Gerrit Beemster, Arp Schnittger, John C. Larkin Nov 2015

Functional Conservation In The Siamese-Related Family Of Cyclin-Dependent Kinase Inhibitors In Land Plants, Narender Kumar, Hirofumi Harashima, Shweta Kalve, Jonathan Bramsiepe, Kai Wang, Bulelani L. Sizani, Laura L. Bertrand, Matthew C. Johnson, Christopher Faulk, Renee Dale, L. Alice Simmons, Michelle L. Churchman, Keiko Sugimoto, Naohiro Kato, Maheshi Dasanayake, Gerrit Beemster, Arp Schnittger, John C. Larkin

Faculty Publications

© 2015 American Society of Plant Biologists. All rights reserved. The best-characterized members of the plant-specific SIAMESE-RELATED (SMR) family of cyclin-dependent kinase inhibitors regulate the transition from the mitotic cell cycle to endoreplication, also known as endoreduplication, an altered version of the cell cycle in which DNA is replicated without cell division. Some other family members are implicated in cell cycle responses to biotic and abiotic stresses. However, the functions of most SMRs remain unknown, and the specific cyclin- dependent kinase complexes inhibited by SMRs are unclear. Here, we demonstrate that a diverse group of SMRs, including an SMR from …

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Cellular And Molecular Remodeling Of Inguinal Adipose Tissue Mitochondria By Dietary Methionine Restriction, Yuvraj N. Patil, Kelly N. Dille, David H. Burk, Cory C. Cortez, Thomas W. Gettys Nov 2015

Cellular And Molecular Remodeling Of Inguinal Adipose Tissue Mitochondria By Dietary Methionine Restriction, Yuvraj N. Patil, Kelly N. Dille, David H. Burk, Cory C. Cortez, Thomas W. Gettys

Faculty Publications

© 2015 Elsevier Inc. Dietary methionine restriction (MR) produces a coordinated series of biochemical and physiological responses that improve biomarkers of metabolic health, increase energy expenditure, limit fat accretion and improve overall insulin sensitivity. Inguinal white adipose tissue (IWAT) is a primary target and site of action where the diet initiates transcriptional programs linked to enhancing both synthesis and oxidation of lipid. Using a combination of ex vivo approaches to assess dietary effects on cell morphology and function, we report that dietary MR produced a fourfold increase in multilocular, UCP1-expressing cells within this depot in conjunction with significant increases in …

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Lithologic Discontinuity Assessment In Soils Via Portable X-Ray Fluorescence Spectrometry And Visible Near-Infrared Diffuse Reflectance Spectroscopy, David C. Weindorf, Somsubhra Chakraborty, Abdalsamad Abdalsatar, Ali Aldabaa, Laura Pau Lette, Giuseppe Corti, Stefania Cocco, Erika Michéli, Dandan Wang, Bin Li, Titus Man, Aakriti Sharma, Taylor Person Nov 2015

Lithologic Discontinuity Assessment In Soils Via Portable X-Ray Fluorescence Spectrometry And Visible Near-Infrared Diffuse Reflectance Spectroscopy, David C. Weindorf, Somsubhra Chakraborty, Abdalsamad Abdalsatar, Ali Aldabaa, Laura Pau Lette, Giuseppe Corti, Stefania Cocco, Erika Michéli, Dandan Wang, Bin Li, Titus Man, Aakriti Sharma, Taylor Person

Faculty Publications

Lithologic discontinuity identification can be arduous and erroneous in instances where distinct morphological differences between parent materials are absent. Often, investigators must wait for laboratory data to help differentiate parent materials via physicochemical properties. This study used visible near-infrared diffuse reflectance spectroscopy (VisNIR DRS) and portable X-ray fluorescence (PXRF) spectrometry for establishing parent material differentia more quickly. Ten pedons containing 135 samples were scanned in situ in the United States, Italy, and Hungary, morphologically described by trained pedologists, then sampled for standard laboratory characterization. Compared with laboratory data and/or morphologically described discontinuities, PXRF data were associated with large, abrupt changes …

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Political Identity Of Louisiana’S College Voters An Analysis Of Their Opinions, Habits, And Politics, Milton Joseph Hernandez Iv Nov 2015

Political Identity Of Louisiana’S College Voters An Analysis Of Their Opinions, Habits, And Politics, Milton Joseph Hernandez Iv

Honors Capstones

No abstract provided.

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Darwin’S Dice: The Idea Of Chance In The Thought Of Charles Darwin, Charles H. Pence Nov 2015

Darwin’S Dice: The Idea Of Chance In The Thought Of Charles Darwin, Charles H. Pence

Faculty Publications

No abstract provided.

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Recent Advances In The Use Of Mass Spectrometry To Examine Structure/Function Relationships In Photosystem Ii, Terry M. Bricker, Manjula P. Mummadisetti, Laurie K. Frankel Nov 2015

Recent Advances In The Use Of Mass Spectrometry To Examine Structure/Function Relationships In Photosystem Ii, Terry M. Bricker, Manjula P. Mummadisetti, Laurie K. Frankel

Faculty Publications

© 2015 Elsevier B.V. All rights reserved. Tandem mass spectrometry often coupled with chemical modification techniques, is developing into increasingly important tool in structural biology. These methods can provide important supplementary information concerning the structural organization and subunit make-up of membrane protein complexes, identification of conformational changes occurring during enzymatic reactions, identification of the location of posttranslational modifications, and elucidation of the structure of assembly and repair complexes. In this review, we will present a brief introduction to Photosystem II, tandem mass spectrometry and protein modification techniques that have been used to examine the photosystem. We will then discuss a …

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Changes In Habitat Use At Rain Forest Edges Through Succession: A Case Study Of Understory Birds In The Brazilian Amazon, Luke L. Powell, Gustavo Zurita, Jared D. Wolfe, Erik I. Johnson, Philip C. Stouffer Nov 2015

Changes In Habitat Use At Rain Forest Edges Through Succession: A Case Study Of Understory Birds In The Brazilian Amazon, Luke L. Powell, Gustavo Zurita, Jared D. Wolfe, Erik I. Johnson, Philip C. Stouffer

Faculty Publications

Primary tropical rain forests are being rapidly perforated with new edges via roads, logging, and pastures, and vast areas of secondary forest accumulate following abandonment of agricultural lands. To determine how insectivorous Amazonian understory birds respond to edges between primary rain forest and three age classes of secondary forest, we radio-tracked two woodcreepers (Glyphorynchus spirurus, N = 17; Xiphorhynchus pardalotus, N = 18) and a terrestrial antthrush (Formicarius colma, N = 19). We modeled species-specific response to distance to forest edge (a continuous variable) based on observations at varying distances from the primary-secondary forest interface. All species avoided 8-14-yr-old secondary …

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Amp-Activated Protein Kinase Stimulates Warburg-Like Glycolysis And Activation Of Satellite Cells During Muscle Regeneration, Xing Fu, Mei Jun Zhu, Mike V. Dodson, Min Du Oct 2015

Amp-Activated Protein Kinase Stimulates Warburg-Like Glycolysis And Activation Of Satellite Cells During Muscle Regeneration, Xing Fu, Mei Jun Zhu, Mike V. Dodson, Min Du

Faculty Publications

© 2015 by The American Society for Biochemistry and Molecular Biology, Inc. Satellite cells are the major myogenic stem cells residing inside skeletal muscle and are indispensable for muscle regeneration. Satellite cells remain largely quiescent but are rapidly activated in response to muscle injury, and the derived myogenic cells then fuse to repair damaged muscle fibers or form new muscle fibers. However, mechanisms eliciting metabolic activation, an inseparable step for satellite cell activation following muscle injury, have not been defined. We found that a non-canonical Sonic Hedgehog (Shh) pathway is rapidly activated in response to muscle injury, which activates AMPK …

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Curcumin Conjugates For Treating And Preventing Cancers, William Hansel, Sita Aggarwal, Robert P. Hammer Oct 2015

Curcumin Conjugates For Treating And Preventing Cancers, William Hansel, Sita Aggarwal, Robert P. Hammer

Pennington Biomedical Research Center Patents

Conjugating LHRH to curcumin (LHRH-Curcumin) substantially enhances the bioavailability of curcumin, targets it to cells expressing LHRH receptors, facilitates intravenous administration, and increases the anti-cancer efficacy of curcumin. The conjugate may be used against cancer cells that express the LHRH receptor: pancreas, prostate, breast, testicular, uterine, ovarian, melanoma. LH-Curcumin conjugates may be used against cancer cells that express the LH receptor: prostate, breast, ovary, testis, uterus, pancreas, and melanoma.

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Improving Healthspan Via Changes In Gut Microbiota And Fermentation, Michael J. Keenan, Maria L. Marco, Donald K. Ingram, Roy J. Martin Oct 2015

Improving Healthspan Via Changes In Gut Microbiota And Fermentation, Michael J. Keenan, Maria L. Marco, Donald K. Ingram, Roy J. Martin

Faculty Publications

Dietary resistant starch impact on intestinal microbiome and improving healthspan is the topic of this review. In the elderly population, dietary fiber intake is lower than recommended. Dietary resistant starch as a source of fiber produces a profound change in gut microbiota and fermentation in animal models of aging. Dietary resistant starch has the potential for improving healthspan in the elderly through multiple mechanisms as follows: (1) enhancing gut microbiota profile and production of short-chain fatty acids, (2) improving gut barrier function, (3) increasing gut peptides that are important in glucose homeostasis and lipid metabolism, and (4) mimicking many of …

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Identification Of The Substrate Access Portal Of 5-Lipoxygenase, Sunayana Mitra, Sue G. Bartlett, Marcia E. Newcomer Oct 2015

Identification Of The Substrate Access Portal Of 5-Lipoxygenase, Sunayana Mitra, Sue G. Bartlett, Marcia E. Newcomer

Faculty Publications

© 2015 American Chemical Society. The overproduction of inflammatory lipid mediators derived from arachidonic acid contributes to asthma and cardiovascular diseases, among other pathologies. Consequently, the enzyme that initiates the synthesis of pro-inflammatory leukotrienes, 5-lipoxygenase (5-LOX), is a target for drug design. The crystal structure of 5-LOX revealed a fully encapsulated active site; thus the point of substrate entry is not known. We asked whether a structural motif, a "cork" present in 5-LOX but absent in other mammalian lipoxygenases, might be ejected to allow substrate access. Our results indicate that reduction of cork volume facilitates access to the active site. …

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Ethanol Enhances Arsenic-Induced Cyclooxygenase-2 Expression Via Both Nfat And Nf-Κb Signalings In Colorectal Cancer Cells, Lei Wang, John Andrew Hitron, James T.F. Wise, Young Ok Son, Ram Vinod Roy, Donghern Kim, Jin Dai, Poyil Pratheeshkumar, Zhuo Zhang, Mei Xu, Jia Luo, Xianglin Shi Oct 2015

Ethanol Enhances Arsenic-Induced Cyclooxygenase-2 Expression Via Both Nfat And Nf-Κb Signalings In Colorectal Cancer Cells, Lei Wang, John Andrew Hitron, James T.F. Wise, Young Ok Son, Ram Vinod Roy, Donghern Kim, Jin Dai, Poyil Pratheeshkumar, Zhuo Zhang, Mei Xu, Jia Luo, Xianglin Shi

Faculty Publications

Arsenic is a known carcinogen to humans, and chronic exposure to environmental arsenic is a worldwide health concern. As a dietary factor, ethanol carries a well-established risk for malignancies, but the effects of co-exposure to arsenic and ethanol on tumor development are not well understood. In the present study, we hypothesized that ethanol would enhance the function of an environmental carcinogen such as arsenic through increase in COX-2 expression. Our in vitro results show that ethanol enhanced arsenic-induced COX-2 expression. We also show that the increased COX-2 expression associates with intracellular ROS generation, up-regulated AKT signaling, with activation of both …

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Characterization Of The Bacterioferritin/Bacterioferritin Associated Ferredoxin Protein-Protein Interaction In Solution And Determination Of Binding Energy Hot Spots, Yan Wang, Huili Yao, Yuan Cheng, Scott Lovell, Kevin P. Battaile, C. Russell Midaugh, Mario Rivera Oct 2015

Characterization Of The Bacterioferritin/Bacterioferritin Associated Ferredoxin Protein-Protein Interaction In Solution And Determination Of Binding Energy Hot Spots, Yan Wang, Huili Yao, Yuan Cheng, Scott Lovell, Kevin P. Battaile, C. Russell Midaugh, Mario Rivera

Faculty Publications

© 2015 American Chemical Society. Mobilization of iron stored in the interior cavity of BfrB requires electron transfer from the [2Fe-2S] cluster in Bfd to the core iron in BfrB. A crystal structure of the Pseudomonas aeruginosa BfrB:Bfd complex revealed that BfrB can bind up to 12 Bfd molecules at 12 structurally identical binding sites, placing the [2Fe-2S] cluster of each Bfd immediately above a heme group in BfrB [Yao, H., et al. (2012) J. Am. Chem. Soc., 134, 13470-13481]. We report here a study aimed at characterizing the strength of the P. aeruginosa BfrB:Bfd association using surface plasmon resonance …

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Dual Mode Of Action Of Bt Proteins: Protoxin Efficacy Against Resistant Insects, Bruce E. Tabashnik, Min Zhang, Jeffrey A. Fabrick, Yidong Wu, Meijing Gao, Fangneng Huang, Jizhen Wei, Jie Zhang, Alexander Yelich, Gopalan C. Unnithan, Alejandra Bravo, Mario Soberón, Yves Carrière, Xianchun Li Oct 2015

Dual Mode Of Action Of Bt Proteins: Protoxin Efficacy Against Resistant Insects, Bruce E. Tabashnik, Min Zhang, Jeffrey A. Fabrick, Yidong Wu, Meijing Gao, Fangneng Huang, Jizhen Wei, Jie Zhang, Alexander Yelich, Gopalan C. Unnithan, Alejandra Bravo, Mario Soberón, Yves Carrière, Xianchun Li

Faculty Publications

Transgenic crops that produce Bacillus thuringiensis (Bt) proteins for pest control are grown extensively, but insect adaptation can reduce their effectiveness. Established mode of action models assert that Bt proteins Cry1Ab and Cry1Ac are produced as inactive protoxins that require conversion to a smaller activated form to exert toxicity. However, contrary to this widely accepted paradigm, we report evidence from seven resistant strains of three major crop pests showing that Cry1Ab and Cry1Ac protoxins were generally more potent than the corresponding activated toxins. Moreover, resistance was higher to activated toxins than protoxins in eight of nine cases evaluated in this …

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Effects Of Oil-Contaminated Sediments On Submerged Vegetation: An Experimental Assessment Of Ruppia Maritima, Charles W. Martin, Lauris O. Hollis, R. Eugene Turner Oct 2015

Effects Of Oil-Contaminated Sediments On Submerged Vegetation: An Experimental Assessment Of Ruppia Maritima, Charles W. Martin, Lauris O. Hollis, R. Eugene Turner

Faculty Publications

Oil spills threaten the productivity of ecosystems through the degradation of coastal flora and the ecosystem services these plants provide. While lab and field investigations have quantified the response of numerous species of emergent vegetation to oil, the effects on submerged vegetation remain uncertain. Here, we discuss the implications of oil exposure for Ruppia maritima, one of the most common species of submerged vegetation found in the region affected by the recent Deepwater Horizon oil spill. We grew R. maritima in a range of manipulated sediment oil concentrations: 0, 0.26, 0.53, and 1.05 mL oil /L tank volume, and tracked …

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Genetics, Synergists, And Age Affect Insecticide Sensitivity Of The Honey Bee, Apis Mellifera, Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, Robert G. Danka, Matthew R. Tarver, James A. Ottea, Kristen B. Healy Oct 2015

Genetics, Synergists, And Age Affect Insecticide Sensitivity Of The Honey Bee, Apis Mellifera, Frank D. Rinkevich, Joseph W. Margotta, Jean M. Pittman, Robert G. Danka, Matthew R. Tarver, James A. Ottea, Kristen B. Healy

Faculty Publications

The number of honey bee colonies in the United States has declined to half of its peak level in the 1940s, and colonies lost over the winter have reached levels that are becoming economically unstable. While the causes of these losses are numerous and the interaction between them is very complex, the role of insecticides has garnered much attention. As a result, there is a need to better understand the risk of insecticides to bees, leading to more studies on both toxicity and exposure. While much research has been conducted on insecticides and bees, there have been very limited studies …

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New Perspectives On An Iconic Landscape From Comparative International Long-Term Ecological Research, Evelyn E. Gaiser, Elizabeth P. Anderson, Edward Castañeda-Moya, Ligia Collado-Vides, James W.F. Ourqurean, Michael R. Heithaus, Rudolf Jaffé, David Lagomasino, Nicholas J. Oehm, Rene M. Price, Victor H. Rivera-Monroy, Rinku Roy Chowdhury, Tiffany G. Troxler Oct 2015

New Perspectives On An Iconic Landscape From Comparative International Long-Term Ecological Research, Evelyn E. Gaiser, Elizabeth P. Anderson, Edward Castañeda-Moya, Ligia Collado-Vides, James W.F. Ourqurean, Michael R. Heithaus, Rudolf Jaffé, David Lagomasino, Nicholas J. Oehm, Rene M. Price, Victor H. Rivera-Monroy, Rinku Roy Chowdhury, Tiffany G. Troxler

Faculty Publications

Iconic ecosystems like the Florida Coastal Everglades can serve as sentinels of environmental change from local to global scales. This characteristic can help inform general theory about how and why ecosystems transform, particularly if distinctive ecosystem properties are studied over long time scales and compared to those of similar ecosystems elsewhere. Here we review the ways in which long-term, comparative, international research has provided perspectives on iconic features of the Everglades that have, in turn, informed general ecosystem paradigms. Studies in other comparable wetlands from the Caribbean to Australia have shed light on distinctive and puzzling aspects such as the …

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The Mechanosensory Lateral Line Is Used To Assess Opponents And Mediate Aggressive Behaviors During Territorial Interactions In An African Cichlid Fish, Julie M. Butler, Karen P. Maruska Oct 2015

The Mechanosensory Lateral Line Is Used To Assess Opponents And Mediate Aggressive Behaviors During Territorial Interactions In An African Cichlid Fish, Julie M. Butler, Karen P. Maruska

Faculty Publications

© 2015. Published by The Company of Biologists Ltd. Fish must integrate information from multiple sensory systems to mediate adaptive behaviors. Visual, acoustic and chemosensory cues provide contextual information during social interactions, but the role of mechanosensory signals detected by the lateral line system during aggressive behaviors is unknown. The aim of this study was first to characterize the lateral line system of the African cichlid fish Astatotilapia burtoni and second to determine the role of mechanoreception during agonistic interactions. The A. burtoni lateral line system is similar to that of many other cichlid fishes, containing lines of superficial neuromasts …

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Phylogenetic Signals In Host-Parasite Associations For Neotropical Bats And Nearctic Desert Rodents, Steven J. Presley, Tad Dallas, Brian T. Klingbeil, Michael R. Willig Oct 2015

Phylogenetic Signals In Host-Parasite Associations For Neotropical Bats And Nearctic Desert Rodents, Steven J. Presley, Tad Dallas, Brian T. Klingbeil, Michael R. Willig

Faculty Publications

© 2015 The Linnean Society of London. Hosts and their parasites have strong ecological and evolutionary relationships, with hosts representing habitats and resources for parasites. In the present study, we use approaches developed to evaluate the statistical dependence of species trait values on phylogenetic relationships to determine whether host-parasite relationships (i.e. parasite infections) are contingent on host phylogeny. If host-parasite relationships are contingent on the ability of hosts to provide habitat or resources to parasites, and if host phylogeny is an effective surrogate for among-host variation in habitat and resource quality, host-parasite relationships should evince phylogenetic signals (i.e. be contingent …

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Host Promiscuity In Symbiont Associations Can Influence Exotic Legume Establishment And Colonization Of Novel Ranges, Metha M. Klock, Luke G. Barrett, Peter H. Thrall, Kyle E. Harms Oct 2015

Host Promiscuity In Symbiont Associations Can Influence Exotic Legume Establishment And Colonization Of Novel Ranges, Metha M. Klock, Luke G. Barrett, Peter H. Thrall, Kyle E. Harms

Faculty Publications

© 2015 John Wiley & Sons Ltd. Aim: Invasive Acacia species have negatively impacted natural areas in multiple regions around the globe. Almost 400 Acacia species have been introduced outside their native ranges in Australia; approximately 6% have become invasive, 12% are naturalized, and 82% have no record of naturalization or invasion. This variation in invasiveness provides a comparative framework in which to examine mechanisms that either promote or constrain establishment and colonization of species in novel regions. Here, we experimentally examine the role that the legume-rhizobia symbiosis plays in the differential invasiveness of acacias introduced outside their native Australian …

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Knockdown Of Brm And Baf170, Components Of Chromatin Remodeling Complex, Facilitates Reprogramming Of Somatic Cells, Zongliang Jiang, Yong Tang, Xueming Zhao, Mingyuan Zhang, David M. Donovan, Xiuchun Cindy Tian Oct 2015

Knockdown Of Brm And Baf170, Components Of Chromatin Remodeling Complex, Facilitates Reprogramming Of Somatic Cells, Zongliang Jiang, Yong Tang, Xueming Zhao, Mingyuan Zhang, David M. Donovan, Xiuchun Cindy Tian

Faculty Publications

© Copyright 2015, Mary Ann Liebert, Inc. 2015. The SWI/SNF (SWItch/Sucrose NonFermentable or BAF, Brg/Brahma-associated factors) complexes are epigenetic modifiers of chromatin structure and undergo progressive changes in subunit composition during cellular differentiation. For example, in embryonic stem cells, esBAF contains Brg1 and Baf155, while their homologs, Brm and Baf170, are present in BAF of somatic cells. In this study, we sought to determine whether Brm and Baf170 play any roles in induced pluripotent stem cell (iPSC) reprogramming by using shRNA-mediated knockdown studies in the mouse model. We found that knocking down Brm during early, mid, and late stages (days …

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Dollar Estimates Of Feral Hog Damage To Agriculture In Louisiana (Research Information Sheet #113), Shaun M. Tangers, Kurt Guidry, Huizhen Nui, Celine Richard, Maristela Abreu Oct 2015

Dollar Estimates Of Feral Hog Damage To Agriculture In Louisiana (Research Information Sheet #113), Shaun M. Tangers, Kurt Guidry, Huizhen Nui, Celine Richard, Maristela Abreu

LSU AgCenter Research Information Sheets

A study of feral hog activity and damage in Louisiana. Data were gathered from Louisiana farmers. The study results show that feral hogs caused at least $30 million in damage to crops on Louisiana farms in 2013. The publication includes maps and tables.

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Gazetteer And Site-Based History Of The Ornithology Of Sabah. Malaysian Borneo, Frederick H. Sheldon Oct 2015

Gazetteer And Site-Based History Of The Ornithology Of Sabah. Malaysian Borneo, Frederick H. Sheldon

Occasional Papers of the Museum of Natural Science, Louisiana State University

The gazetteer lists sites in the state of Sabah, Malaysia, where birds have been collected, studied, or watched. Its purpose is to identify locations for research and birding in Sabah and to provide a brief scientific history of the more important sites. Each site description includes latitude, longitude, and general information on location. For many sites, elevation, habitat, scientific or birdwatching importance, historical notes, citations of key papers, specimen records, and records of certain species are also included.

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