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Articles 6061 - 6090 of 19717
Full-Text Articles in Entire DC Network
Exploring A Novel Substrate-Borne Vibratory Signal In The Wolf Spider Schizocosa Floridana, Malcolm F. Rosenthal, Eileen Hebets, Rowan H. Mcginley, Cody Raiza, James Starrett, Lin Yan, Damian O. Elias
Exploring A Novel Substrate-Borne Vibratory Signal In The Wolf Spider Schizocosa Floridana, Malcolm F. Rosenthal, Eileen Hebets, Rowan H. Mcginley, Cody Raiza, James Starrett, Lin Yan, Damian O. Elias
Eileen Hebets Publications
Animals communicate using a diversity of signals produced by a wide array of physical structures. Determining how a signal is produced provides key insights into signal evolution. Here, we examine a complex vibratory mating display produced by male Schizocosa floridana wolf spiders. This display contains three discrete substrate-borne acoustic components (known as “thumps”, “taps”, and “chirps”), each of which is anecdotally associated with the movement of a different body part (the pedipalps, legs, and abdomen respectively). In order to determine the method of production, we employ a combination of high-speed video/audio recordings and SEM imaging of possible sound-producing structures. Previous …
Testing The Hypothesized Antipredator Defence Function Of Stridulation In The Spiny Orb-Weaving Spider, Micrathena Gracilis, Tyler B. Corey, Eileen A. Hebets
Testing The Hypothesized Antipredator Defence Function Of Stridulation In The Spiny Orb-Weaving Spider, Micrathena Gracilis, Tyler B. Corey, Eileen A. Hebets
Eileen Hebets Publications
The observable diversity of antipredator defenses across organisms demonstrates predation’s impact on trait evolution. The functions of many traits that are presumed to have an antipredator function have never been directly tested. The spiny orb-weaving spider, Micrathena gracilis, for example, stridulates when grasped. While stridulation was first hypothesized to be an antipredator defense nearly 50 years ago, no data exist to support this hypothesis. To explore the form and function of M. gracilis stridulation, we first quantified the behavioral and acoustical properties of sound production. Next, using laboratory assays, we directly tested the effect of stridulation on survival with …
Alfred Russel Wallace Notes 12: How Good Was Wallace's Memory?, Charles H. Smith
Alfred Russel Wallace Notes 12: How Good Was Wallace's Memory?, Charles H. Smith
Faculty/Staff Personal Papers
Alfred Russel Wallace (1823−1913) continues to be criticized for inconsistencies in his recollections of the earlier events in his life. This criticism, while not entirely unjust, has nevertheless been overplayed. Critics have not attended to the general understanding that self-biography is under the influence of two aspects of memory: that pertaining to remembrance of the qualities of past situations, and a secondary ability to assign absolutes of name or date to such memories. All evidence suggests that Wallace’s memory in the first sense was excellent throughout his life, but that he was prone to lapses of the second type.
Alfred Russel Wallace Notes 13: Wallace On Prayer, Charles H. Smith
Alfred Russel Wallace Notes 13: Wallace On Prayer, Charles H. Smith
Faculty/Staff Personal Papers
Alfred Russel Wallace (1823−1913) is known to most for his natural history explorations and theoretical biology, but he also developed thoughts on a number of subjects relatable to a wider appreciation of evolutionary cosmology. His adoption of spiritualism, for one, was attuned to this mission, and in turn his otherwise difficult-to-interpret two-sided position on prayer.
Potential Virus-Mediated Nitrogen Cycling In Oxygen-Depleted Oceanic Waters, M. Consuelo Gazitúa, Dean R. Vik, Simon Roux, Ann C. Gregory, Benjamin Bolduc, Brittany Widner, Margaret R. Mulholland, Steven J. Hallam, Osvaldo Ulloa, Matthew B. Sullivan
Potential Virus-Mediated Nitrogen Cycling In Oxygen-Depleted Oceanic Waters, M. Consuelo Gazitúa, Dean R. Vik, Simon Roux, Ann C. Gregory, Benjamin Bolduc, Brittany Widner, Margaret R. Mulholland, Steven J. Hallam, Osvaldo Ulloa, Matthew B. Sullivan
OES Faculty Publications
Viruses play an important role in the ecology and biogeochemistry of marine ecosystems. Beyond mortality and gene transfer, viruses can reprogram microbial metabolism during infection by expressing auxiliary metabolic genes (AMGs) involved in photosynthesis, central carbon metabolism, and nutrient cycling. While previous studies have focused on AMG diversity in the sunlit and dark ocean, less is known about the role of viruses in shaping metabolic networks along redox gradients associated with marine oxygen minimum zones (OMZs). Here, we analyzed relatively quantitative viral metagenomic datasets that profiled the oxygen gradient across Eastern Tropical South Pacific (ETSP) OMZ waters, assessing whether OMZ …
Scorpions Of The Horn Of Africa (Arachnida: Scorpiones). Part Xxv. Description Of Pandinurus Awalei Sp. N. And The Male Of Pandiborellius Somalilandus (Kovařík, 2012), With Remarks On Recent Synonymies (Scorpionidae: Pandininae), František Kovařík, Graeme Lowe, Hassan Sh A. Elmi
Scorpions Of The Horn Of Africa (Arachnida: Scorpiones). Part Xxv. Description Of Pandinurus Awalei Sp. N. And The Male Of Pandiborellius Somalilandus (Kovařík, 2012), With Remarks On Recent Synonymies (Scorpionidae: Pandininae), František Kovařík, Graeme Lowe, Hassan Sh A. Elmi
Euscorpius
A new species Pandinurus awalei sp. n. is described from Somaliland. The male of Pandiborellius somalilandus (Kovařík, 2012) is also described for the first time and sexual dimorphism of the species is defined. The habitus, morphology and habitats of both species are illustrated in detail with color and UV fluorescence images, including both live and preserved specimens. The species Pandinurus intermedius (Borelli, 1919) and Pandipalpus lowei (Kovařík, 2012) of Pandininae that were synonymized by Prendini & Loria (2020) are reinstated as valid species.
A Review On Ecosystem Services And Their Threats In The Conservation Of Nyando Wetland, Kisumu County, Kenya, Joseph K. Maithya, Felix L .M. Ming’Ate, Sammy C. Letema
A Review On Ecosystem Services And Their Threats In The Conservation Of Nyando Wetland, Kisumu County, Kenya, Joseph K. Maithya, Felix L .M. Ming’Ate, Sammy C. Letema
Tanzania Journal of Science
Wetlands are vital ecosystems as they are essential to human health, wellbeing, ecological integrity and national development as well as in the attainment of the Sustainable Development Goals. However, despite their contributions to human wellbeing, they have been destroyed and degraded over years. The aim of this paper is to review literature on the ecosystem services in Nyando wetland ecosystem and how they have been helpful to the well-being of its residents and also to determine the threats to the Nyando ecosystem services. A total of 88 documents were reviewed out of 20,400 documents from the Google engine search. It …
Assessment Of Genetic Diversity Of The Wild Rice (Oryza Longistaminata) Populations In Tanzania Using Microsatellite Markers, Hashim M. Mangosongo, Emerald E. Mneney, Jagger Harvey, Martina Kyallo
Assessment Of Genetic Diversity Of The Wild Rice (Oryza Longistaminata) Populations In Tanzania Using Microsatellite Markers, Hashim M. Mangosongo, Emerald E. Mneney, Jagger Harvey, Martina Kyallo
Tanzania Journal of Science
The genetic diversity of 132 samples of the perennial wild rice (Oryza longistaminata) populations from selected districts (Bagamoyo, Kibaha, Kilombero and Mbarali) in Tanzania was evaluated using twenty eight microsatellite markers. Genomic DNA was extracted using standard protocols. Polymerase Chain Reaction (PCR) was carried out in a total reaction volume of 10 µL, using Touchdown protocol. It was found that all 28 microsatellite markers generated polymorphic patterns, with average Polymorphic Information Content (PIC) value of 0.631. Moreover, a total of 243 alleles were detected by the 28 markers, with average of 8.68 alleles per marker. The percentages of genetic variations …
Distribution Of Crickets (Subfamily: Phalangopsinae) In Caves Of Baratang Island, Andaman And Nicobar Islands, India, Amruta Dhamorikar, Dhanusha Kawalkar, Shirish Manchi
Distribution Of Crickets (Subfamily: Phalangopsinae) In Caves Of Baratang Island, Andaman And Nicobar Islands, India, Amruta Dhamorikar, Dhanusha Kawalkar, Shirish Manchi
International Journal of Speleology
Cave-dwelling organisms share different ecological and evolutionary relationships with caves. Based on these interactions, they are categorized as troglobites, troglophiles, and trogloxenes. In India, caves are meagerly explored, and thus cave study is in its infancy in India. Through the present study, we attempted to understand and model the distribution of crickets (Family Phalangopsidae), a critical group of insects - being the primary consumers in the cave ecosystems. We sampled seven caves using belt transects (N = 184; total area covered = 1294.9 m2) with 1 m width. During the survey, we encountered 818 individual crickets (116.85 ± …
First Report Of Brachyplatys Subaeneus (Westwood) (Hemiptera: Heteroptera: Plataspidae) In The United States, Joseph E. Eger Jr., Adam J. Pitcher, Susan E. Halbert, Cory Penca, Amanda C. Hodges
First Report Of Brachyplatys Subaeneus (Westwood) (Hemiptera: Heteroptera: Plataspidae) In The United States, Joseph E. Eger Jr., Adam J. Pitcher, Susan E. Halbert, Cory Penca, Amanda C. Hodges
Insecta Mundi
Brachyplatys subaeneus (Westwood) (Hemiptera: Plataspidae), is reported from Miami Beach, FL, the first report from the United States. It was noticed first on a photo-sharing site (iNaturalist) providing an example of the importance of these sites for helping to track introduced species. Information on distribution, host plants and potential spread are provided along with photos and taxonomic characters to assist with identification of this recently introduced species.
ZooBank registration. urn:lsid:zoobank.org:pub:332C0E76-9AE9-4069-9240-F55CADC64165
Checklist Of The Caddisfly Family Rhyacophilidae (Insecta: Trichoptera) In India, Tabaraq Ali, Sajad H. Parey, Manpreet S. Pandher, Malkiat S. Saini
Checklist Of The Caddisfly Family Rhyacophilidae (Insecta: Trichoptera) In India, Tabaraq Ali, Sajad H. Parey, Manpreet S. Pandher, Malkiat S. Saini
Insecta Mundi
The present checklist covers the fauna of the Trichopteran family Rhyacophilidae Stephens, 1836. Based on extensive surveys done during 2003–2019 and previous species records, we find that the family Rhyacophilidae is represented by two genera and 184 species in India. The genus Rhyacophila Pictet contains 165 species in India while the genus Himalopsyche Banks contains 19 described species. The Indian Himalayan region is inhabited by more species than the rest of India.
A New Species Of Parorectis Spaeth From The North-Central United States, With Notes On Prothoracic And Head Morphology Of The Genus (Coleoptera: Chrysomelidae: Cassidinae: Cassidini), Edward G. Riley
Insecta Mundi
A new species of tortoise beetle from the north-central United States, Parorectis arenaria new species (Coleoptera: Chrysomelidae: Cassidinae: Cassidini), is described and illustrated. Comparative remarks and a key are provided to distinguish the new species from the three other species comprising the genus. Adults and larvae of the new species feed on Physalis L. (Solanaceae). The circum-foraminal ridge and antennal groove of the prothorax are described in detail. The pars stridens (file) of the stridulatory apparatus on the male cranium of the new species is illustrated. The pars stridens is present only in males of Parorectis Spaeth species. A patch …
First Record For Cypherotylus Dromedarius (Lacordaire) (Coleoptera: Erotylidae) From Panama, Brian J. Armitage, Alonso Santos Murgas
First Record For Cypherotylus Dromedarius (Lacordaire) (Coleoptera: Erotylidae) From Panama, Brian J. Armitage, Alonso Santos Murgas
Insecta Mundi
Cypherotylus dromedarius (Lacordaire, 1842) (Coleoptera: Erotylidae) was described from French Guiana. Information about its current distribution is scattered throughout the literature and the internet. Specimens of this species were recently observed and photographed in the Boquete area, Chiriqui Province, Panama, and constitute a new record for the country of this species. Subsequently, we located two specimens deposited in the National Reference Collection of the G. B. Fairchild Museum of Invertebrates, University of Panama, from the same locality in Chiriqui Province. We summarize the distribution of this species from scattered sources and provide five new records.
Cypherotylus dromedarius (Lacordaire, 1842) (Coleoptera: …
Additional Type Designations For Fireflies (Coleoptera: Lampyridae) Of The Biologia Centrali Americana Housed In The Natural History Museum, London, Gavin J. Martin, Natalie A. Saxton
Additional Type Designations For Fireflies (Coleoptera: Lampyridae) Of The Biologia Centrali Americana Housed In The Natural History Museum, London, Gavin J. Martin, Natalie A. Saxton
Insecta Mundi
Firefly (Coleoptera: Lampyridae) taxonomy has undergone numerous changes over the past 100 years. In order to help provide stability to the group, types for several of the Lampyridae of the Biologia Centrali Americana were determined or designated in early 2019. Here we provide treatments for the remaining Lampyridae and determine the holotype specimens for four species and designate lectotype specimens for 33 species.
ZooBank registration. urn:lsid:zoobank.org:pub:1EBF8DAB-3EC5-4671-9E15-C3D2213E3164
The Genus Ochodaeus In Italy: Taxonomy And Distribution (Coleoptera: Scarabaeoidea: Ochodaeidae), Stefano Ziani
The Genus Ochodaeus In Italy: Taxonomy And Distribution (Coleoptera: Scarabaeoidea: Ochodaeidae), Stefano Ziani
Insecta Mundi
The author provides a taxonomic, nomenclatural and distributional review of the genus Ochodaeus Dejean, 1821 (Coleoptera: Scarabaeoidea: Ochodaeidae) in Italy. All Italian populations have been confirmed to belong to a single species, O. chrysomeloides (Schrank, 1781). After the study of a syntype, O. cychramoides Reitter, 1892, formerly considered an Italian endemic, is confirmed to be a junior synonym of O. chrysomeloides. Type material of O. chrysomeloides is believed to be destroyed, therefore a neotype is here designated and deposited at the Natural History Museum of Vienna, Austria. A lectotype is here designated for O. cychramoides and deposited in the Hungarian …
A New Central American Genus Of Pleasing Fungus Beetles (Coleoptera: Erotylidae) From The Ischyrus-Megischyrus Complex, Paul E. Skelley
A New Central American Genus Of Pleasing Fungus Beetles (Coleoptera: Erotylidae) From The Ischyrus-Megischyrus Complex, Paul E. Skelley
Insecta Mundi
Antoinettia, new genus (Coleoptera: Erotylidae: Erotylinae: Tritomini), is erected for three species: A. audbala (Skelley), new combination, A. huhnei Skelley, new species, and A. kovariki (Skelley), new combination. A genus complex involving Ischyrus Lacordaire, 1842, and Megischyrus Crotch, 1873, is defined and a preliminary key to neotropical genera of Tritomini with coarsely facetted eyes is presented.
ZooBank registration. urn:lsid:zoobank.org:pub:7CF5D30C-C46E-4135-A188-B53B0A77B34E
Dos Nuevas Especies De Gorgojos Que Barrenan Los Frutos De Palma De Chontaduro De Los Géneros Parisoschoenus Y Cylindrocerus (Coleoptera: Curculionidae: Baridinae) De La Costa Pacífica De Colombia, Luis Miguel Constantino, Luis Carlos Pardo-Locarno
Dos Nuevas Especies De Gorgojos Que Barrenan Los Frutos De Palma De Chontaduro De Los Géneros Parisoschoenus Y Cylindrocerus (Coleoptera: Curculionidae: Baridinae) De La Costa Pacífica De Colombia, Luis Miguel Constantino, Luis Carlos Pardo-Locarno
Insecta Mundi
Actualmente existen dos especies de gorgojos (Coleoptera: Curculionidae) que barrenan los frutos de la palma de chontaduro Bactris gasipaes Kunth en Colombia y que ocasionan pérdidas de hasta el 100% de la producción. Palmelampius heinrichi O’Brien es la principal plaga del cultivo en toda la costa pacífica y en vastas regiones de la amazonia y el piedemonte llanero. En este trabajo se describe una nueva especie del género Parisoschoenus Faust, P. bactrisae Constantino y Pardo-Locarno que ocurre simpátricamente con P. heinrichi en la costa pacífica de Colombia causando un daño similar y que se diferencia de la especie anterior por …
Using Dna Barcoding For Identification Of Some Psyllids (Hemiptera: Psylloidea) Intercepted At South Korea Ports-Of-Entry, Soo-Jung Suh, Deuk-Soo Choi
Using Dna Barcoding For Identification Of Some Psyllids (Hemiptera: Psylloidea) Intercepted At South Korea Ports-Of-Entry, Soo-Jung Suh, Deuk-Soo Choi
Insecta Mundi
Quick and accurate identification of intercepted psyllids (Hemiptera: Psylloidea) is an essential requirement for effective pest management and phytosanitary procedures. However, due to lack of morphological characters in the immature stages that can be used to distinguish species, other molecular methods, such as DNA barcoding are proving to be useful. The current study was to designed to generate comprehensive information on the identification of all developmental stages of eight species of psyllids intercepted on consignments of infested fresh cut flowers at the ports of entry in South Korea using DNA barcoding. It is considered that DNA barcoding is a reliable …
Comparison Of Native And Non-Native Predator Consumption Rates And Prey Avoidance Behavior In North America And Europe, Ayse Gül Ünlü, John J. Obrycki, Roman Bucher
Comparison Of Native And Non-Native Predator Consumption Rates And Prey Avoidance Behavior In North America And Europe, Ayse Gül Ünlü, John J. Obrycki, Roman Bucher
Entomology Faculty Publications
Novel predator–prey interactions can contribute to the invasion success of non-native predators. For example, native prey can fail to recognize and avoid non-native predators due to a lack of co-evolutionary history and cue dissimilarity with native predators. This might result in a competitive advantage for non-native predators. Numerous lady beetle species were globally redistributed as biological control agents against aphids, resulting in novel predator–prey interactions. Here, we investigated the strength of avoidance behavior of the pea aphid (Acyrthosiphon pisum) toward chemical cues of native lady beetles and non-native Asian Harmonia axyridis and European Coccinella septempunctata and Hippodamia variegata …
Anthropogenic Change On The Distribution Of Marine Megafauna And Their Prey, Baylie Fadool
Anthropogenic Change On The Distribution Of Marine Megafauna And Their Prey, Baylie Fadool
Honors Program: Senior Projects (Public)
Anthropogenic change is impacting the distribution and survival of marine megafauna and their prey. Humans are changing every aspect of the marine environment, with effects reaching as large as changing the composition of marine environments to directly overexploiting species through the fishing industry. The role that marine megafauna play in balancing ecosystems, including as top apex predators, leads to detrimental results in the absences and population declines of these species. Migrations and declines due to threats on marine apex predator species will alter their environments by causing mesopredator release and changes in community structure, which is often associated with reduced …
Feeding Specificity Of The Photosynthetic Sacoglossan Sea Slug Elysia Papillosa, Kourtney Sui Barber
Feeding Specificity Of The Photosynthetic Sacoglossan Sea Slug Elysia Papillosa, Kourtney Sui Barber
USF Tampa Graduate Theses and Dissertations
The sacoglossan sea slug, Elysia papillosa is associated with two species of the siphonaceous green alga, Penicillus, which co-occur in mixed macrophyte beds at Tarpon Springs, FL, USA. Field collections revealed that Elysia papillosa is frequently collected from the alga, P. capitatus, but is also present in much lower abundance on P. lamourouxii. Past studies have shown that some species of sacoglossans consume algal species that differ from the algae from which they are collected so, in order to determine whether E. papillosa was consuming either or both species of Penicillus, total DNA was extracted from individual slugs collected from …
Loci Associated With Antibody Response In Feral Swine (Sus Scrofa) Infected With Brucella Suis, Courtney F. Pierce, Vienna R. Brown, Steven C. Olsen, Paola Boggiatto, Kerri Pedersen, Ryan S. Miller, Scott E. Speidel, Timothy J. Smyser
Loci Associated With Antibody Response In Feral Swine (Sus Scrofa) Infected With Brucella Suis, Courtney F. Pierce, Vienna R. Brown, Steven C. Olsen, Paola Boggiatto, Kerri Pedersen, Ryan S. Miller, Scott E. Speidel, Timothy J. Smyser
United States Department of Agriculture Wildlife Services: Staff Publications
Feral swine (Sus scrofa) are a destructive invasive species widespread throughout the United States that disrupt ecosystems, damage crops, and carry pathogens of concern for the health of domestic stock and humans including Brucella suis—the causative organism for swine brucellosis. In domestic swine, brucellosis results in reproductive failure due to abortions and infertility. Contact with infected feral swine poses spillover risks to domestic pigs as well as humans, companion animals, wildlife, and other livestock. Genetic factors influence the outcome of infectious diseases; therefore, genome wide association studies (GWAS) of differential immune responses among feral swine can provide …
A New Species Of Diolcus Mayr (Hemiptera: Heteroptera: Scutelleridae: Pachycorinae) With A Reexamination Of The Subfamily And Generic Placement Of Nesogenes Boscii (Fabricius) (Hemiptera: Heteroptera: Scutelleridae: Elvisurinae Or Pachycorinae), Joseph E. Eger Jr.
Insecta Mundi
Diolcus thomasi Eger new species (Hemiptera: Heteroptera: Scutelleridae: Pachycorinae), is described from Cayman Brac and Little Cayman Island and compared to D. chrysorrhoeus (Fabricius), its closest congener. Nesogenes boscii (Fabricius) is removed from the Elvisurinae and placed in the Pachycorinae. The relationship of N. boscii to D. thomasi and D. chrysorrhoeus is discussed.
Diolcus Mayr (Hemiptera: Heteroptera: Scutelleridae: Pachycorinae) currently contains six valid species: D. cassidoides (Walker) from Hispaniola, D. chrysorrhoeus (Fabricius) from the southeastern US and Texas, D. disjunctus Barber from Puerto Rico, D. irroratus (Fabricius) from Florida and many of …
A Review Of Avian Influenza A Virus Associations In Synanthropic Birds, Susan A. Shriner, J. Jeffrey Root
A Review Of Avian Influenza A Virus Associations In Synanthropic Birds, Susan A. Shriner, J. Jeffrey Root
United States Department of Agriculture Wildlife Services: Staff Publications
Avian influenza A viruses (IAV) have received significant attention due to the threat they pose to human, livestock, and wildlife health. In this review, we focus on what is known about IAV dynamics in less common avian species that may play a role in trafficking IAVs to poultry operations. Specifically, we focus on synanthropic bird species. Synanthropic species, otherwise known as peridomestic, are species that are ecologically associated with humans and anthropogenically modified landscapes, such as agricultural and urban areas. Aquatic birds such as waterfowl and shorebirds are the species most commonly associated with avian IAVs, and are generally considered …
General Destabilizing Effects Of Eutrophication On Grassland Productivity At Multiple Spatial Scales, Yann Hautier, Pengfei Zhang, Michel Loreau, Kevin R. Wilcox, Eric W. Seabloom, Elizabeth T. Borer, Jarrett E.K. Byrnes, Sally E. Koerner, Kimberly J. Komatsu, Jonathan S. Lefcheck, Andy Hector, Peter B. Adler, Juan Alberti, Carlos A. Arnillas, Jonathan D. Bakker, Lars A. Brudvig, Miguel N. Bugalho, Marc Cadotte, Maria C. Caldeira, Oliver Carroll, Mick Crawley, Scott L. Collins, Pedro Daleo, Laura E. Dee, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Benjamin Gilbert, Amandine Hansar, Forest Isbell, Johannes M.H. Knops, Andrew S. Macdougall, Rebecca L. Mcculley, Joslin L. Moore, John W. Morgan, Akira S. Mori, Pablo L. Peri, Edwin T. Pos, Sally A. Power, Jodi N. Price, Peter B. Reich, Anita C. Risch, Christiane Roscher, Mahesh Sankaran, Martin Schütz, Melinda Smith, Carly Stevens, Pedro M. Tognetti, Risto Virtanen, Glenda M. Wardle, Peter A. Wilfahrt, Shaopeng Wang
General Destabilizing Effects Of Eutrophication On Grassland Productivity At Multiple Spatial Scales, Yann Hautier, Pengfei Zhang, Michel Loreau, Kevin R. Wilcox, Eric W. Seabloom, Elizabeth T. Borer, Jarrett E.K. Byrnes, Sally E. Koerner, Kimberly J. Komatsu, Jonathan S. Lefcheck, Andy Hector, Peter B. Adler, Juan Alberti, Carlos A. Arnillas, Jonathan D. Bakker, Lars A. Brudvig, Miguel N. Bugalho, Marc Cadotte, Maria C. Caldeira, Oliver Carroll, Mick Crawley, Scott L. Collins, Pedro Daleo, Laura E. Dee, Nico Eisenhauer, Anu Eskelinen, Philip A. Fay, Benjamin Gilbert, Amandine Hansar, Forest Isbell, Johannes M.H. Knops, Andrew S. Macdougall, Rebecca L. Mcculley, Joslin L. Moore, John W. Morgan, Akira S. Mori, Pablo L. Peri, Edwin T. Pos, Sally A. Power, Jodi N. Price, Peter B. Reich, Anita C. Risch, Christiane Roscher, Mahesh Sankaran, Martin Schütz, Melinda Smith, Carly Stevens, Pedro M. Tognetti, Risto Virtanen, Glenda M. Wardle, Peter A. Wilfahrt, Shaopeng Wang
Wildland Resources Faculty Publications
Eutrophication is a widespread environmental change that usually reduces the stabilizing effect of plant diversity on productivity in local communities. Whether this effect is scale dependent remains to be elucidated. Here, we determine the relationship between plant diversity and temporal stability of productivity for 243 plant communities from 42 grasslands across the globe and quantify the effect of chronic fertilization on these relationships. Unfertilized local communities with more plant species exhibit greater asynchronous dynamics among species in response to natural environmental fluctuations, resulting in greater local stability (alpha stability). Moreover, neighborhood communities that have greater spatial variation in plant species …
Reddyanus Justi Sp. N. From Laos (Scorpiones: Buthidae), František Kovařík, Graeme Lowe, František Šťáhlavský
Reddyanus Justi Sp. N. From Laos (Scorpiones: Buthidae), František Kovařík, Graeme Lowe, František Šťáhlavský
Euscorpius
A new species Reddyanus justi sp. n. from Laos is described, fully complemented with color photographs of live and preserved specimens. The new species is characterized by the irregular quadrilateral shape of the subaculear tubercle in males. In addition to analysis of external morphology and hemispermatophore, we also describe the karyotype (2n=12)
Geographic And Intra-Racial Disparities In Early-Onset Colorectal Cancer In The Seer 18 Registries Of The United States, Wesal H. Abualkhair, Meijiao Zhou, Carolina O. Ochoa, Leonel Lacayo, Caitlin Murphy, Xiao Cheng Wu, Jordan J. Karlitz
Geographic And Intra-Racial Disparities In Early-Onset Colorectal Cancer In The Seer 18 Registries Of The United States, Wesal H. Abualkhair, Meijiao Zhou, Carolina O. Ochoa, Leonel Lacayo, Caitlin Murphy, Xiao Cheng Wu, Jordan J. Karlitz
School of Medicine Faculty Publications
Background: Although early-onset colorectal cancer (EOCRC) incidence rates (IRs) are increasing, geographic and intra-racial IR disparities are not well defined. Methods: 2000-2015 Surveillance, Epidemiology, and End Results (SEER) program CRC IR Analysis (170,434 cases) was performed from ages 30 to 60 in four US regions, 18 individual registries, metropolitan and nonmetropolitan locations and stratified by race. Analyses were conducted in 1-year and 5-year age increments. Results: Wide US regional EOCRC IR variations exist: For example, age 45 IRs in the south are 26.8/100,000, 36.0% higher than the West, 19.7/100,000 (p < 0.0001). Disparities magnify between individual registries: EOCRC IRs in highest risk registries were 177-348% (Alaska Natives), 75-200% (Hawaii), 76-128% (Louisiana), and 61-125% (Kentucky) higher than lowest risk registries depending on age. EOCRC IRs are 18.2%-25.6% higher in nonmetropolitan versus metropolitan settings. Wide geographic intra-racial disparities exist. Within the White population, the greatest IR difference (78.8%) was between Kentucky (5.9/100,000) and Los Angeles (3.3/100,000) in 30- to 34-year-olds (p <.0001). Within the Black population, the greatest difference (136.2%) was between rural Georgia (30.7/100,000) and California excluding San Francisco-Oakland/San Jose-Monterey/Los Angeles (13/100,000) in 40- to 44-year-olds (p = 0003). Conclusion: Marked geographic EOCRC disparities exist with disproportionately high IRs in Alaska Natives, Hawaii, and southern registries. Geographic intra-racial disparities are present within White and Black populations. In Blacks, there are disproportionately high EOCRC IRs in rural Georgia. Although vigilance is required in all populations, attention must be paid to these higher risk populations. Potential interventions include assuring early investigation of symptoms, targeting modifiable risk factors and utilizing earlier age 45 screening options supported by some guidelines.
The Endangered California Condor (Gymnogyps Californianus) Population Is Exposed To Local Haemosporidian Parasites, M. Andreína Pacheco, Chris N. Parish, Timothy J. Hauck, Roberto F. Aguilar, Ananias A. Escalante
The Endangered California Condor (Gymnogyps Californianus) Population Is Exposed To Local Haemosporidian Parasites, M. Andreína Pacheco, Chris N. Parish, Timothy J. Hauck, Roberto F. Aguilar, Ananias A. Escalante
Harold W. Manter Laboratory of Parasitology: Library Materials
The endangered California Condor (Gymnogyps californianus) is the largest New World Vulture in North America. Despite recovery program success in saving the species from extinction, condors remain compromised by lead poisoning and limited genetic diversity. The latter makes this species especially vulnerable to infectious diseases. Thus, taking advantage of the program of blood lead testing in Arizona, condor blood samples from 2008 to 2018 were screened for haemosporidian parasites using a nested polymerase chain reaction (PCR) protocol that targets the parasite mitochondrial cytochrome b gene. Plasmodium homopolare (Family Plasmodiidae, Order Haemosporida, Phylum Apicomplexa), was detected in condors captured …
A Putative Chordate Luciferase From A Cosmopolitan Tunicate Indicates Convergent Bioluminescence Evolution Across Phyla, Michael Tessler, Jean P. Gaffney, Anderson G. Oliveira, Andrew Guarnaccia, Krista C. Dobi, Nehaben A. Gujarati, Moira Galbraith, Jeremy D. Mirza, John S. Sparks, Vincent A. Pieribone, Robert J. Wood, David F. Gruber
A Putative Chordate Luciferase From A Cosmopolitan Tunicate Indicates Convergent Bioluminescence Evolution Across Phyla, Michael Tessler, Jean P. Gaffney, Anderson G. Oliveira, Andrew Guarnaccia, Krista C. Dobi, Nehaben A. Gujarati, Moira Galbraith, Jeremy D. Mirza, John S. Sparks, Vincent A. Pieribone, Robert J. Wood, David F. Gruber
Publications and Research
Pyrosomes are tunicates in the phylum Chordata, which also contains vertebrates. Their gigantic blooms play important ecological and biogeochemical roles in oceans. Pyrosoma, meaning “firebody”, derives from their brilliant bioluminescence. The biochemistry of this light production is unknown, but has been hypothesized to be bacterial in origin. We found that mixing coelenterazine—a eukaryote-specific luciferin—with Pyrosoma atlanticum homogenate produced light. To identify the bioluminescent machinery, we sequenced P. atlanticum transcriptomes and found a sequence match to a cnidarian luciferase (RLuc). We expressed this novel luciferase (PyroLuc) and, combined with coelenterazine, it produced light. A similar gene was recently predicted from a …
Wetland Edge Trampled By American Bison (Bos Bison) Used As Basking Site For Painted Turtles (Chrysemys Picta), Keith Geluso, Carter Kruse, Mary Harner
Wetland Edge Trampled By American Bison (Bos Bison) Used As Basking Site For Painted Turtles (Chrysemys Picta), Keith Geluso, Carter Kruse, Mary Harner
Transactions of the Nebraska Academy of Sciences and Affiliated Societies
Prairies of the Great Plains once were influenced by large-scale disturbances, such as fire and herbivory by large ungulates, that promoted ecosystem functioning. American Bison (Bos bison) created many types of disturbances as they traversed grassland landscapes. Trampling, a common type of bison disturbance, occurred when large herds moved through an area denuding aboveground vegetation, exposing prairie soils, and restarting succession. Bison reintroductions now allow researchers to use contemporary observations to examine influences of these large, hoofed mammals on system functions. Herein, we report on the immediate benefit of trampling along a wetland edge for another vertebrate species. …