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Articles 9301 - 9330 of 19738
Full-Text Articles in Entire DC Network
Contribution To The Knowledge Of Chilean Gelechiidae (Lepidoptera: Gelechioidea), Danilo E. Cepeda
Contribution To The Knowledge Of Chilean Gelechiidae (Lepidoptera: Gelechioidea), Danilo E. Cepeda
Insecta Mundi
A synopsis of the Chilean Gelechiidae (Lepidoptera: Gelechioidea) is presented, including an annotated list of species with geographic distributions and a compilation of previous references. New distribution records for four species are provided.
Spanish abstract
Se presenta una sinopsis de los Gelechiidae de Chile (Lepidoptera: Gelechioidea), que incluye un listado, con su distribución geográfica y una recopilación de antecedentes bibliográficos previos. Se entregan nuevos registros de distribución para cuatro especies.
Current Status Of Pseudococcidae (Hemiptera: Coccoidea) In South Korea, Ah-Ram Son, Soo-Jung Suh
Current Status Of Pseudococcidae (Hemiptera: Coccoidea) In South Korea, Ah-Ram Son, Soo-Jung Suh
Insecta Mundi
Thirty-one species of mealybugs (Hemiptera: Pseudococcidae) are reported from South Korea based upon monitoring surveys conducted from 2010 to 2016, along with a dichotomous key to separate them. Six species, Nipaecoccus nipae (Maskell), Palmicultor lumpurensis (Takahashi), Planococcus citri (Risso), Pseudococcus dendrobiorum Williams, Pseudococcus longispinus (Targioni-Tozzetti), and Pseudococcus orchidicola Takahashi, known only to occur in greenhouses, are considered as adventive mealybug species to South Korea; of these, P. citri has already established in the exterior environment in South Korea.
Relative Contribution Of Neutral And Deterministic Processes In Shaping Fruit-Feeding Butterfly Assemblages In Afrotropical Forests, Kwaku Aduse-Poku, Freerk Molleman, William Oduro, Samuel K. Oppong, David J. Lohman, Rampal S. Etienne
Relative Contribution Of Neutral And Deterministic Processes In Shaping Fruit-Feeding Butterfly Assemblages In Afrotropical Forests, Kwaku Aduse-Poku, Freerk Molleman, William Oduro, Samuel K. Oppong, David J. Lohman, Rampal S. Etienne
Publications and Research
The unified neutral theory of biodiversity and biogeography has gained the status of a quantitative null model for explaining patterns in ecological (meta)communities. The theory assumes that individuals of trophically similar species are functionally equivalent. We empirically evaluate the relative contribution of neutral and deterministic processes in shaping fruit-feeding butterfly assemblages in three tropical forests in Africa, using both direct (confronting the neutral model with species abundance data) and indirect approaches (testing the predictions of neutral theory using data other than species abundance distributions). Abundance data were obtained by sampling butterflies using banana baited traps set at the forest canopy …
Spatially Explicit Model Of Areas Between Suitable Black Bear Habitat In East Texas And Black Bear Populations In Louisiana, Arkansas, And Oklahoma, Caitlin M. Glymph, Christopher Comer, Daniel Scognamillo, Daniel Unger, Yanli Zhang
Spatially Explicit Model Of Areas Between Suitable Black Bear Habitat In East Texas And Black Bear Populations In Louisiana, Arkansas, And Oklahoma, Caitlin M. Glymph, Christopher Comer, Daniel Scognamillo, Daniel Unger, Yanli Zhang
Electronic Theses and Dissertations
Although black bears (Ursus americanus, Ursus americanus luteolus) were once found throughout the south-central United States, unregulated harvest and habitat loss resulted in severe range retractions and by the beginning of the twentieth century populations in Oklahoma, Louisiana, Texas and Arkansas were nearing extirpation. In response to these losses, translocation programs were initiated in Arkansas (1958-1968 & 2000-2006) and Louisiana (1964-1967 & 2001-2009). These programs successfully restored bears to portions of Louisiana and Arkansas, and, as populations in Arkansas began dispersing, to Oklahoma. In contrast, east Texas remains unoccupied despite the existence of suitable habitat in the region.
To facilitate …
The Diversity, Costs, And Benefits Of Shelters Built By Lepidopteran Caterpillars In A Costa Rican Dry Forest, Christina Baer
The Diversity, Costs, And Benefits Of Shelters Built By Lepidopteran Caterpillars In A Costa Rican Dry Forest, Christina Baer
Dissertations
Thousands of Lepidoptera species build shelters as caterpillars using plant material and their own silk. Although these caterpillars and their shelters are recognized as playing important ecological roles, the structural diversity of shelters and the costs and benefits of different shelters to their builders are still poorly understood. In this dissertation, I use natural history observations, observational and manipulative field projects, and molecular and phylogenetic tools to investigate these questions for a diverse and abundant shelter-building caterpillar community within the dry forest of Palo Verde National Park, Costa Rica. In Chapter 1, I develop a system for categorizing and describing …
Genomic Data Reveal A Loss Of Diversity In Two Species Of Tuco-Tucos (Genus Ctenomys) Following A Volcanic Eruption, Jeremy L. Hsu, Jeremy Chase Crawford, Mauro N. Tammone, Uma Ramakrishnan, Eileen A. Lacey, Elizabeth A. Hadly
Genomic Data Reveal A Loss Of Diversity In Two Species Of Tuco-Tucos (Genus Ctenomys) Following A Volcanic Eruption, Jeremy L. Hsu, Jeremy Chase Crawford, Mauro N. Tammone, Uma Ramakrishnan, Eileen A. Lacey, Elizabeth A. Hadly
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Marked reductions in population size can trigger corresponding declines in genetic variation. Understanding the precise genetic consequences of such reductions, however, is often challenging due to the absence of robust pre- and post-reduction datasets. Here, we use heterochronous genomic data from samples obtained before and immediately after the 2011 eruption of the Puyehue-Cordón Caulle volcanic complex in Patagonia to explore the genetic impacts of this event on two parapatric species of rodents, the colonial tuco-tuco (Ctenomys sociabilis) and the Patagonian tuco-tuco (C. haigi). Previous analyses using microsatellites revealed no post-eruption changes in genetic variation in C. …
No Evidence For Trace Metal Limitation On Anaerobic Carbon Mineralization In Three Peatland Soils, Jason K. Keller, Jillian Wade
No Evidence For Trace Metal Limitation On Anaerobic Carbon Mineralization In Three Peatland Soils, Jason K. Keller, Jillian Wade
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Peatlands store roughly one-third of the terrestrial soil carbon and release the potent greenhouse gas methane (CH4) to the atmosphere, making these wetlands among the most important ecosystems in the global carbon cycle. Despite their importance, the controls of anaerobic decomposition of organic matter to carbon dioxide (CO2) and CH4 within peatlands are not well understood. It is known, however, that the enzymes responsible for CH4 production require cobalt, iron and nickel, and there is a growing appreciation for the potential role of trace metal limitation in anaerobic decomposition. To explore the possibility of …
Evaluating The Ecological Status Of The Introduced Nile Monitor (Varanus Niloticus) In Florida: Forecasting Presence And Population Expansion Using Computational Geographic Information Systems, Noah G. Cohen
HCNSO Student Theses and Dissertations
The Nile monitor (Varanus niloticus) is a large, carnivorous lizard that has become a notorious invasive species in Florida, USA. Initially released in the 1980s from the pet trade, the species has since established at least three breeding populations and spread throughout much of southern Florida. While current control efforts have failed to eradicate V. niloticus, it is important to attain a better understanding of its invasive dynamics to guide and inform better control strategies. In this study, available georeferenced records of V. niloticus in Florida were compiled and linked to a habitat classification map to evaluate ecotype preferences. Factored …
Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark
Linking Taxonomic Diversity And Trophic Function: A Graph-Based Theoretical Approach, Marcella M. Jurotich, Kaitlyn Dougherty, Barbara Hayford, Sally Clark
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
The purpose of this study is to develop a novel, visual method in analyzing complex functional trait data in freshwater ecology. We focus on macroinvertebrates in stream ecosystems under a gradient of habitat degradation and employ a combination of taxonomic and functional trait diversity analyses. Then we use graph theory to link changes in functional trait diversity to taxonomic richness and habitat degradation. We test the hypotheses that: 1) taxonomic diversity and trophic functional trait diversity both decrease with increased habitat degradation; 2) loss of taxa leads to a decrease in trophic function as visualized using a bipartite graph; and …
Ecological Epigenetics Of Avian Range Expansions, Holly J. Kilvitis
Ecological Epigenetics Of Avian Range Expansions, Holly J. Kilvitis
USF Tampa Graduate Theses and Dissertations
In light of human-mediated environmental change, a fundamental goal for biologists is to determine which phenotypic characteristics enable some individuals, populations or species to be more adept at coping with such change, while rendering others more vulnerable. Studying ongoing range expansions provide a unique opportunity to address this question by allowing documentation of how novel environments shape phenotypic variation on ecological timescales. At range-edges, individuals are exposed to strong selective pressures and population genetic challenges (e.g. bottlenecks and/or founder effects), which make genetic adaptation difficult. Nevertheless, certain species, such as the house sparrow (Passer domesticus), seem to thrive in their …
A Study Of The Urban Red Fox (Vulpes Vulpes) Population In Baton Rouge, Louisiana Using Social Media, Ahsennur Soysal
A Study Of The Urban Red Fox (Vulpes Vulpes) Population In Baton Rouge, Louisiana Using Social Media, Ahsennur Soysal
LSU Master's Theses
Foxes are timid yet resourceful animals that are integrated into many urban environments. Because they are elusive, collecting information about the number of urban foxes, their diet and spatial distribution, their interactions with the ecological community in their urban habitat, as well as residents’ response to them, is difficult. Involving stakeholders to participate in the data collection on wildlife via citizen science on social media is one way to overcome this complication, while simultaneously engaging residents in the ecology happening around them. Therefore, we used social media as the platform to engage the public to document and map the foxes …
Ncer Assistance Agreement Annual Progress Report For Grant #83582401 - Assessment Of Stormwater Harvesting Via Manage Aquifer Recharge (Mar) To Develop New Water Supplies In The Arid West: The Salt Lake Valley Example, Ryan Dupont, Joan E. Mclean, Richard C. Peralta, Sarah E. Null, Douglas B. Jackson-Smith
Ncer Assistance Agreement Annual Progress Report For Grant #83582401 - Assessment Of Stormwater Harvesting Via Manage Aquifer Recharge (Mar) To Develop New Water Supplies In The Arid West: The Salt Lake Valley Example, Ryan Dupont, Joan E. Mclean, Richard C. Peralta, Sarah E. Null, Douglas B. Jackson-Smith
Civil and Environmental Engineering Faculty Publications
The aims of the original proposed project remain the same, that is, to test the hypothesis that Managed Aquifer Recharge (MAR) for stormwater harvesting is a technically feasible, socially and environmentally acceptable, economically viable, and legally feasible option for developing new water supplies for arid Western urban ecosystems experiencing increasing population, and climate change pressures on existing water resources. The project is being carried out via three distinct but integrated components that include: 1) Monitoring of existing distributed MAR harvesting schemes involving a growing number of demonstration Green Infrastructure (GI) test sites; 2) Integrated stormwater/vadose zone/groundwater/ ecosystem services modeling; and …
Mode And Rate Of Evolution Of Haemosporidian Mitochondrial Genomes: Timing The Radiation Of Avian Parasites, M. Andreína Pacheco, Nubia E. Matta, Gediminas Valkiūnas, Patricia G. Parker, Beatriz Mello, Craig E. Stanley Jr., Miguel Lentino, Maria Alexandra Garcia-Amado, Michael Cranfield, Sergei L. Kosakovsky Pond, Ananias A. Escalante
Mode And Rate Of Evolution Of Haemosporidian Mitochondrial Genomes: Timing The Radiation Of Avian Parasites, M. Andreína Pacheco, Nubia E. Matta, Gediminas Valkiūnas, Patricia G. Parker, Beatriz Mello, Craig E. Stanley Jr., Miguel Lentino, Maria Alexandra Garcia-Amado, Michael Cranfield, Sergei L. Kosakovsky Pond, Ananias A. Escalante
Harold W. Manter Laboratory of Parasitology: Library Materials
Haemosporidians are a diverse group of vector-borne parasitic protozoa that includes the agents of human malaria; however, most of the described species are found in birds and reptiles. Although our understanding of these parasites’ diversity has expanded by analyses of their mitochondrial genes, there is limited information on these genes’ evolutionary rates. Here, 114 mitochondrial genomes (mtDNA) were studied from species belonging to four genera: Leucocytozoon, Haemoproteus, Hepatocystis, and Plasmodium. Contrary to previous assertions, the mtDNA is phylogenetically informative. The inferred phylogeny showed that, like the genus Plasmodium, the Leucocytozoon and Haemoproteus genera are not monophyletic groups. Although …
Bioleaching Potential Of Filamentous Fungi To Mobilize Lithium And Cobalt From Spent Rechargeable Li-Ion Batteries, Aldo Lobos
USF Tampa Graduate Theses and Dissertations
Demand for lithium (Li) and cobalt (Co) is on the rise, due in part to their increased use in rechargeable Li-ion batteries (RLIB). Current recycling processes that utilize chemical leaching efficiently recover in Li and Co from the cathode material in spent batteries; however, these processes are costly and emit hazardous waste into the environment. Therefore, a more sustainable process for recycling Li and Co is needed, and bioleaching may provide a solution. Fungal bioleaching has been shown in previous studies to effectively mobilize metals (Pb, Al, Mn, Cu, and Zn) from mine tailings, electronic scrap, and spent batteries with …
Reef Fish Biodiversity In The Florida Keys National Marine Sanctuary, Megan E. Hepner
Reef Fish Biodiversity In The Florida Keys National Marine Sanctuary, Megan E. Hepner
USF Tampa Graduate Theses and Dissertations
The biological diversity of reef-fish in the Florida Keys National Marine Sanctuary (FKNMS) from 1999 – 2016 was evaluated in terms of abundance, biomass, species richness, evenness, Shannon diversity, Simpson diversity, and functional diversity, using observations collected by multiple agencies and institutions under the Reef Visual Census (RVC) program. To compare the different diversity indices species richness, Shannon diversity, Simpson diversity, and functional diversity were converted into effective number of species. I examined the seven indices by no-take marine zones, in seven benthic habitat strata, and across the three-distinct geographic subregions in the Florida Keys domain (Upper, Middle, and Lower …
Antimicrobial Activity Of Bee Venom And Melittin Against Borrelia Burgdorferi, Kayla Socarras, Priyanka A. Theophilus, Jason Torres, Khusali Gupta, Eva Sapi
Antimicrobial Activity Of Bee Venom And Melittin Against Borrelia Burgdorferi, Kayla Socarras, Priyanka A. Theophilus, Jason Torres, Khusali Gupta, Eva Sapi
Biology and Environmental Science Faculty Publications
Lyme disease is a tick-borne, multi-systemic disease, caused by the bacterium Borrelia burgdorferi. Though antibiotics are used as a primary treatment, relapse often occurs after the discontinuation of antimicrobial agents. The reason for relapse remains unknown, however previous studies suggest the possible presence of antibiotic resistant Borrelia round bodies, persisters and attached biofilm forms. Thus, there is an urgent need to find antimicrobial agents suitable to eliminate all known forms of B. burgdorferi. In this study, natural antimicrobial agents such as Apis mellifera venom and a known component, melittin, were tested using SYBR Green I/PI, direct cell counting, biofilm …
Language And Socioeconomics Predict Geographic Variation In Peer Review Outcomes At An Ecology Journal, C. Sean Burns, Charles W. Fox
Language And Socioeconomics Predict Geographic Variation In Peer Review Outcomes At An Ecology Journal, C. Sean Burns, Charles W. Fox
Information Science Faculty Publications
Papers submitted by scientists located in western nations generally fare better in the peer review process than do papers submitted by scientists from elsewhere. This paper examines geographic variation in peer review outcomes (whether a manuscript is sent for review, review scores obtained, and final decisions by editors) for 3529 submissions over a 4.5 year period at the journal Functional Ecology. In particular, we test whether geographic variation in language and socioeconomics are adequate to explain most or are all of this variation. There was no relationship between the geographic regions of handling editors and the decisions to send …
Cryptic Diversity And Discordance In Single‐Locus Species Delimitation Methods Within Horned Lizards (Phrynosomatidae: Phrynosoma), Christopher Blair, Robert W. Bryson Jr.
Cryptic Diversity And Discordance In Single‐Locus Species Delimitation Methods Within Horned Lizards (Phrynosomatidae: Phrynosoma), Christopher Blair, Robert W. Bryson Jr.
Publications and Research
Biodiversity reduction and loss continues to progress at an alarming rate, and thus there is widespread interest in utilizing rapid and efficient methods for quantifying and delimiting taxonomic diversity. Single-locus species-delimitation methods have become popular, in part due to the adoption of the DNA barcoding paradigm. These techniques can be broadly classified into tree-based and distance-based methods depending on whether species are delimited based on a constructed genealogy. Although the relative performance of these methods has been tested repeatedly with simulations, additional studies are needed to assess congruence with empirical data. We compiled a large data set of mitochondrial ND4 …
Gene Coexpression Network Analysis Of Fruit Transcriptomes Uncovers A Possible Mechanistically Distinct Class Of Sugar/Acid Ratio-Associated Genes In Sweet Orange, Liang Qiao, Minghao Cao, Jian Zheng, Yihong Zhao, Zhi-Liang Zheng
Gene Coexpression Network Analysis Of Fruit Transcriptomes Uncovers A Possible Mechanistically Distinct Class Of Sugar/Acid Ratio-Associated Genes In Sweet Orange, Liang Qiao, Minghao Cao, Jian Zheng, Yihong Zhao, Zhi-Liang Zheng
Publications and Research
Background: The ratio of sugars to organic acids, two of the major metabolites in fleshy fruits, has been considered the most important contributor to fruit sweetness. Although accumulation of sugars and acids have been extensively studied, whether plants evolve a mechanism to maintain, sense or respond to the fruit sugar/acid ratio remains a mystery. In a prior study, we used an integrated systems biology tool to identify a group of 39 acid-associated genes from the fruit transcriptomes in four sweet orange varieties (Citrus sinensis L. Osbeck) with varying fruit acidity, Succari (acidless), Bingtang (low acid), and Newhall and Xinhui (normal …
Response To Nitrogen And Salinity Conditions In Rhizophora Mangle Seedlings Varies By Site Of Origin, Kristen L. Langanke
Response To Nitrogen And Salinity Conditions In Rhizophora Mangle Seedlings Varies By Site Of Origin, Kristen L. Langanke
USF Tampa Graduate Theses and Dissertations
Many coastal plant species thrive across a range of environmental conditions, often displaying dramatic phenotypic variation in response to environmental variation. We characterized the response of the critical foundation species Rhizophora mangle L. to full factorial combinations of salt and nitrogen (N). We used seedlings collected from five populations and measured traits related to salt tolerance and N amendment. The response to increasing salt included significant plasticity in succulence, leaf mass area (LMA), and root to shoot ratio (R:S). Seedlings also showed overall reduced maximum photosynthetic rate in response to N amendment, but this response depended on the level of …
Catalinia, A New Scorpion Genus From Southern California, Usa And Northern Baja California, Mexico (Scorpiones: Vaejovidae), Michael E. Soleglad, Richard F. Ayrey, Matthew R. Graham, Victor Fet
Catalinia, A New Scorpion Genus From Southern California, Usa And Northern Baja California, Mexico (Scorpiones: Vaejovidae), Michael E. Soleglad, Richard F. Ayrey, Matthew R. Graham, Victor Fet
Euscorpius
Genus Catalinia, gen. nov. (Scorpiones: Vaejovidae) is described from southern California, USA and Baja California, Mexico. The genus is composed of four species formerly placed in Pseudouroctonus: Catalinia minima (Kraepelin, 1911), comb. nov. (type species), C. andreas (Gertsch et Soleglad, 1972), comb. nov., C. castanea (Gertsch et Soleglad, 1972), comb. nov., and C. thompsoni, comb. nov. (Gertsch et Soleglad, 1972). Major diagnostic characters of Catalinia include a carapace with a very weak anterior indentation, a very stout metasoma with little or no tapering from segment I to V, and a mating plug with two partial bases. …
New State Records For Nearctic False Click Beetles (Coleoptera: Eucnemidae), Robert L. Otto, Ken D. Karns
New State Records For Nearctic False Click Beetles (Coleoptera: Eucnemidae), Robert L. Otto, Ken D. Karns
Insecta Mundi
New state records for 49 species of Eucnemidae (Coleoptera) are reported throughout the United States and a single species is newly reported from Utah. Diagnostic remarks are offered for Xylophilus crassicornis Muona and distributional observations are discussed for Dirrhagofarsus lewisi. The importance of retaining by-catch from statewide, regional, and national surveys for future studies is also discussed.
Over the last five years, opportunities were presented on many occasions to identify more than 1500 Eucnemidae from four private collections and eight institutional collections. Most of the specimens recently studied and identifi ed came from the Carnegie Museum of Natural History as …
A New Subspecies Of Eupatorus Gracillicornis Arrow, 1908 From Southern Vietnam (Coleoptera, Scarabaeidae, Dynastinae), Sergey Moskalenko
A New Subspecies Of Eupatorus Gracillicornis Arrow, 1908 From Southern Vietnam (Coleoptera, Scarabaeidae, Dynastinae), Sergey Moskalenko
Insecta Mundi
A new subspecies, Eupatorus gracillicornis prandii ssp. nov. (Coleoptera, Scarabaeidae, Dynastinae), from Southern Vietnam, is described and illustrated.
Eupatorus gracillicornis was described by G. J. Arrow (1908), the holotype was collected in Dong Van in North Vietnam (Dechambre 1975). This species is also distributed in India (Assam), Myanmar, Thailand, Laos, China, Cambodia and Malaysia. Until recently, only one aberration and three subspecies had been described, in addition to the nominative subspecies. The aberration is E. gracillicornis ab. cinctus Endrödi (Endrödi 1985). The subspecies E. gracillicornis edai Hirasawa was described from the Dawna range, near the central border of Myanmar and …
Nemonychidae And Anthribidae Of Wisconsin (Coleoptera: Curculionoidea), Julia Janicki, Daniel K. Young
Nemonychidae And Anthribidae Of Wisconsin (Coleoptera: Curculionoidea), Julia Janicki, Daniel K. Young
Insecta Mundi
A statewide survey of Wisconsin’s Nemonychidae and Anthribidae (Coleoptera: Curculionoidea) was conducted over one full (2012) and two partial (2011, 2013) fi eld seasons. Specimens were collected using a variety of techniques. Two species of the nemonychid genus Cimberis and 22 species of Anthribidae in 13 genera are now confi rmed. Generic and species-level keys for Wisconsin species are provided along with generic and species diagnoses. Species treatments also include a synonymy, a description, and information on natural history, phenology, distribution and collecting methods. Dorsal and lateral habitus images are also provided for most of the species.
(Download = low-res …
Descripción De Una Nueva Especie Del Genero Tetraleurodes Cockerell (Hemiptera: Aleyrodidae) Y Clave Para Las Especies De México, Oscar Ángel Sánchez-Flores, Vicente Emilio Carapia-Ruiz, Oswaldo García-Martínez, José Angel Villarreal-Quintanilla, Antonio Castillo-Gutiérrez
Descripción De Una Nueva Especie Del Genero Tetraleurodes Cockerell (Hemiptera: Aleyrodidae) Y Clave Para Las Especies De México, Oscar Ángel Sánchez-Flores, Vicente Emilio Carapia-Ruiz, Oswaldo García-Martínez, José Angel Villarreal-Quintanilla, Antonio Castillo-Gutiérrez
Insecta Mundi
Se describe con medidas, dibujos e imágenes obtenidas con microscopio compuesto, una nueva especie de mosca blanca, Tetraleurodes dorsibandas Sánchez y Carapia sp. nov. (Hemiptera: Aleyrodidae) que se encontró alimentándose de Casimiroa edulis (Rutaceae) y Ehretia tinifolia (Boraginaceae) en Morelos y Oaxaca (México), respectivamente. La especie se diferencia de Tetraleurodes perileuca (Cockerell) por tener el raquis en forma de bandas, presentar estructuras en forma de mosaico irregular en la parte media de los segmentos abdominales y la presencia de setas cefálicas. Se proporciona una clave de las especies de México y se enlistan las especies del nuevo mundo.
A …
Sustainability For Whom? Place-Makers Of Detroit, Dominica, Ecuador, And Mexico, Emma Gaalaas Mullaney
Sustainability For Whom? Place-Makers Of Detroit, Dominica, Ecuador, And Mexico, Emma Gaalaas Mullaney
Sponsored Events -- List
Drawing from more than a decade of work with farmers in rural and urban areas across the Americas, Professor Gaalaas Mullaney highlights some key findings about how small-scale farmers have a big influence on the conservation of cultural and ecological richness in their region. In each of these diverse places, innovative farmers work at the margins of dominant political and economic institutions with only occasional recognition of the value that they produce. What can these farmers teach us about how to cultivate place-based sustainability? How is sustainability related to social and economic justice?
Effect Of Population, Collection Year, After-Ripening And Incubation Condition On Seed Germination Of Stipa Bungeana, Rui Zhang, Jerry M. Baskin, Carol C. Baskin, Qing Mo, Lijun Chen, Xiaowen Hu, Yanrong Wang
Effect Of Population, Collection Year, After-Ripening And Incubation Condition On Seed Germination Of Stipa Bungeana, Rui Zhang, Jerry M. Baskin, Carol C. Baskin, Qing Mo, Lijun Chen, Xiaowen Hu, Yanrong Wang
Biology Faculty Publications
Knowledge of the germination behavior of different populations of a species can be useful in the selection of appropriate seed sources for restoration. The aim of this study was to test the effect of seed population, collection year, after-ripening and incubation conditions on seed dormancy and germination of Stipa bungeana, a perennial grass used for revegetation of degraded grasslands on the Loess Plateau, China. Fresh S. bungeana seeds were collected from eight locally-adapted populations in 2015 and 2016. Dormancy and germination characteristics of fresh and 6-month-old dry-stored seeds were determined by incubating them over a range of alternating temperature …
Assessment Of Intra And Interregional Genetic Variation In The Eastern Red-Backed Salamander, Plethodon Cinereus, Via Analysis Of Novel Microsatellite Markers, Alexander C. Cameron
Assessment Of Intra And Interregional Genetic Variation In The Eastern Red-Backed Salamander, Plethodon Cinereus, Via Analysis Of Novel Microsatellite Markers, Alexander C. Cameron
Biology
The red-backed salamander (Plethodon cinereus) has long-served as a model system in ecology, evolution, and behavior, and studies surveying molecular variation in this species have become increasingly common over the past decade. However, difficulties are commonly encountered when extending microsatellite markers to populations that are unstudied from a genetic perspective due to high levels of genetic differentiation across this species’ range. To ameliorate this issue, we used 454 pyrosequencing to identify hundreds of microsatellite loci. We then screened 40 of our top candidate loci in populations in Virginia, Pennsylvania, and Ohio—including an isolated island population ~ 4.5 km off the …
Comparative Transcriptomics Reveal Developmental Turning Points During Embryogenesis Of A Hemimetabolous Insect, The Damselfly Ischnura Elegans, Sabrina Simon, Sven Sagasser, Edoardo Saccenti, Mercer R. Brugler, M. Eric Schranz, Heike Hadrys, George Amato, Rob Desalle
Comparative Transcriptomics Reveal Developmental Turning Points During Embryogenesis Of A Hemimetabolous Insect, The Damselfly Ischnura Elegans, Sabrina Simon, Sven Sagasser, Edoardo Saccenti, Mercer R. Brugler, M. Eric Schranz, Heike Hadrys, George Amato, Rob Desalle
Publications and Research
Identifying transcriptional changes during embryogenesis is of crucial importance for unravelling evolutionary, molecular and cellular mechanisms that underpin patterning and morphogenesis. However, comparative studies focusing on early/embryonic stages during insect development are limited to a few taxa. Drosophila melanogaster is the paradigm for insect development, whereas comparative transcriptomic studies of embryonic stages of hemimetabolous insects are completely lacking. We reconstructed the first comparative transcriptome covering the daily embryonic developmental progression of the blue-tailed damselfly Ischnura elegans (Odonata), an ancient hemimetabolous representative. We identified a “core” set of 6,794 transcripts – shared by all embryonic stages – which are mainly involved …
Introgression Makes Waves In Inferred Histories Of Effective Population Size, John Hawks
Introgression Makes Waves In Inferred Histories Of Effective Population Size, John Hawks
Human Biology Open Access Pre-Prints
Human populations have a complex history of introgression and of changing population size. Human genetic variation has been affected by both these processes, so that inference of past population size depends upon the pattern of gene flow and introgression among past populations. One remarkable aspect of human population history as inferred from genetics is a consistent “wave” of larger effective population size, found in both African and non-African populations, that appears to reflect events prior to the last 100,000 years. Here I carry out a series of simulations to investigate how introgression and gene flow from genetically divergent ancestral populations …