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https://www.readbyqxmd.com/read/29334409/climate-driven-mitochondrial-selection-a-test-in-australian-songbirds
#1
Annika Mae Lamb, Han Ming Gan, Chris Greening, Leo Joseph, Yin Peng Lee, Alejandra Morán-Ordóñez, Paul Sunnucks, Alexandra Pavlova
Diversifying selection between populations that inhabit different environments can promote lineage divergence within species and ultimately drive speciation. The mitochondrial genome (mitogenome) encodes essential proteins of the oxidative phosphorylation (OXPHOS) system and can be a strong target for climate-driven selection (i.e. associated with inhabiting different climates). We investigated whether Pleistocene climate changes drove mitochondrial selection and evolution within Australian birds. First, using phylogeographic analyses of the mitochondrial ND2 gene for 17 songbird species, we identified mitochondrial clades (mitolineages)...
January 15, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29333938/structure-based-engineering-to-restore-high-affinity-binding-of-an-isoform-selective-anti-tgf%C3%AE-1-antibody
#2
Dana M Lord, Julie J Bird, Denise M Honey, Annie Best, Anna Park, Ronnie R Wei, Huawei Qiu
Metelimumab (CAT192) is a human IgG4 monoclonal antibody developed as a TGFβ1-specific antagonist. It was tested in clinical trials for the treatment of scleroderma but later terminated due to lack of efficacy. Subsequent characterization of CAT192 indicated that its TGFβ1 binding affinity was reduced by ∼50-fold upon conversion from the parental single-chain variable fragment (scFv) to IgG4. We hypothesized this result was due to decreased conformational flexibility of the IgG that could be altered via engineering...
January 15, 2018: MAbs
https://www.readbyqxmd.com/read/29333687/h9n2-influenza-virus-isolated-from-minks-has-enhanced-virulence-in-mice
#3
R Xue, Y Tian, T Hou, D Bao, H Chen, Q Teng, J Yang, X Li, G Wang, Z Li, Q Liu
H9N2 is one of the major subtypes of influenza virus circulating in poultry in China, which has a wide host range from bird to mammals. Two H9N2 viruses were isolated from one mink farm in 2014. Phylogenetic analysis showed that internal genes of the H9N2 viruses have close relationship with those of H7N9 viruses. Interestingly, two H9N2 were separated in phylogenetic trees, indicating that they are introduced to this mink farm in two independent events. And further mice studies showed that one H9N2 caused obvious weight loss and 20% mortality in infected mice, while another virus did not cause any clinical sign in mice infected at the same dose...
January 14, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29333678/supplementary-feeding-as-a-source-of-multiresistant-salmonella-in-endangered-egyptian-vultures
#4
Guillermo Blanco
Wild birds have repeatedly been highlighted as vectors in the dissemination of livestock and human pathogens. Here, the occurrence, serotypes and antimicrobial resistance of Salmonella were assessed in adult Egyptian vultures (Neophron percnopterus), to test the hypothesis that infection is associated with the consumption of swine carcasses provided at supplementary feeding stations (SFSs). Faeces of year-round resident griffon vultures (Gyps fulvus) were also tested to assess whether infection was acquired in the breeding grounds of both species or in the African wintering quarters of Egyptian vultures...
January 14, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29332150/ectoparasite-activity-during-incubation-increases-microbial-growth-on-avian-eggs
#5
G Tomás, D Martín-Gálvez, C Ruiz-Castellano, M Ruiz-Rodríguez, J M Peralta-Sánchez, M Martín-Vivaldi, J J Soler
While direct detrimental effects of parasites on hosts are relatively well documented, other more subtle but potentially important effects of parasitism are yet unexplored. Biological activity of ectoparasites, apart from skin injuries and blood-feeding, often results in blood remains, or parasite faeces that accumulate and modify the host environment. In this way, ectoparasite activities and remains may increase nutrient availability that may favour colonization and growth of microorganisms including potential pathogens...
January 13, 2018: Microbial Ecology
https://www.readbyqxmd.com/read/29331601/predictors-of-length-of-stay-in-psychiatric-inpatient-units-does-their-effect-vary-across-countries
#6
Giorgia Dimitri, Domenico Giacco, Michael Bauer, Victoria Jane Bird, Lauren Greenberg, Antonio Lasalvia, Vincent Lorant, Jacek Moskalewicz, Pablo Nicaise, Andrea Pfennig, Mirella Ruggeri, Marta Welbel, Stefan Priebe
BACKGROUND: Previous studies in individual countries have identified inconsistent predictors of length of stay (LoS) in psychiatric inpatient units. This may reflect methodological inconsistencies across studies or true differences of predictors. In this study we assessed predictors of LoS in five European countries and explored whether their effect varies across countries. METHODS: Prospective cohort study. All patients admitted over 14 months to 57 psychiatric inpatient units in Belgium, Germany, Italy, Poland and United Kingdom were screened...
December 7, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/29330815/supplementing-dietary-rosemary-rosmarinus-officinalis-l-powder-and-vitamin-e-in-broiler-chickens-evaluation-of-humoral-immune-response-lymphoid-organs-and-blood-proteins
#7
Hossein Rostami, Alireza Seidavi, Mohammad Dadashbeiki, Yadollah Asadpour, João Simões, Assar Ali Shah, Vito Laudadio, Caterina Losacco, Antonella Perillo, Vincenzo Tufarelli
The aim of the present study was to evaluate the effect rosemary (Rosmarinus officinalis L.) powder (RP) and vitamin E (VE) at different levels on humoral immunity of broilers during a 42-day production cycle. A total of 270 1-day-old male chicks were assigned to nine groups with three replicates of ten birds each, and diets were supplemented with 0, 0.5, or 1.0% RP and 0, 100, or 200 mg/kg VE, respectively. Commercial-inactivated vaccines against avian influenza (AI) and Newcastle disease (ND) viruses, and living infectious bronchitis virus (IBV) vaccine were administered by spray method...
January 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29330588/whole-body-3d-kinematics-of-bird-take-off-key-role-of-the-legs-to-propel-the-trunk
#8
Pauline Provini, Anick Abourachid
Previous studies showed that birds primarily use their hindlimbs to propel themselves into the air in order to take-off. Yet, it remains unclear how the different parts of their musculoskeletal system move to produce the necessary acceleration. To quantify the relative motions of the bones during the terrestrial phase of take-off, we used biplanar fluoroscopy in two species of birds, diamond dove (Geopelia cuneata) and zebra finch (Taeniopygia guttata). We obtained a detailed 3D kinematics analysis of the head, the trunk and the three long bones of the left leg...
January 6, 2018: Die Naturwissenschaften
https://www.readbyqxmd.com/read/29330422/seabirds-fighting-for-land-phenotypic-consequences-of-breeding-area-constraints-at-a-small-remote-archipelago
#9
Guilherme Tavares Nunes, Sophie Bertrand, Leandro Bugoni
Identifying associations between phenotypes and environmental parameters is crucial for understanding how natural selection acts at the individual level. In this context, genetically isolated populations can be useful models for identifying the forces selecting fitness-related traits. Here, we use a comprehensive dataset on a genetically and ecologically isolated population of the strictly marine bird, the brown booby Sula leucogaster, at the tropical and remote Saint Peter and Saint Paul Archipelago, mid-Atlantic Ocean, in order to detect phenotypic adjustments from interindividual differences in diet, foraging behaviour, and nest quality...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330183/campylobacter-jejuni-colonization-in-the-crow-gut-involves-high-deletion-within-the-cytolethal-distending-toxin-gene-cluster
#10
Keya Sen, Jingrang Lu, Piyali Mukherjee, Tanner Berglund, Eunice Varughese, Asish K Mukhopadhyay
Campylobacter spp. are major causes of gastroenteritis worldwide. The virulence potential of Campylobacter shed in crow feces obtained from a roost area in Bothell, Washington, was studied and compared with isolates from other parts of Washington, and from a different crow spp., 7000 miles away, in Kolkata, India. Campylobacter was isolated from 61% and 69 % of the fecal samples obtained from Washington and Kolkata, respectively and were confirmed to be C. jejuni The cytolethal distending toxin (CDT) gene cluster from these isolates revealed a truncated sequence of about 1400 bp...
January 12, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29329546/whole-genome-sequencing-of-genotype-vi-newcastle-disease-viruses-from-formalin-fixed-paraffin-embedded-tissues-from-wild-pigeons-reveals-continuous-evolution-and-previously-unrecognized-genetic-diversity-in-the-u-s
#11
Ying He, Tonya L Taylor, Kiril M Dimitrov, Salman L Butt, James B Stanton, Iryna V Goraichuk, Heather Fenton, Rebecca Poulson, Jian Zhang, Corrie C Brown, Hon S Ip, Marcos Isidoro-Ayza, Claudio L Afonso
BACKGROUND: Newcastle disease viruses (NDV) are highly contagious and cause disease in both wild birds and poultry. A pigeon-adapted variant of genotype VI NDV, often termed pigeon paramyxovirus 1, is commonly isolated from columbids in the United States and worldwide. Complete genomic characterization of these genotype VI viruses circulating in wild columbids in the United States is limited, and due to the genetic variability of the virus, failure of rapid diagnostic detection has been reported...
January 12, 2018: Virology Journal
https://www.readbyqxmd.com/read/29329534/a-large-scale-study-of-a-poultry-trading-network-in-bangladesh-implications-for-control-and-surveillance-of-avian-influenza-viruses
#12
N Moyen, G Ahmed, S Gupta, T Tenzin, R Khan, T Khan, N Debnath, M Yamage, D U Pfeiffer, G Fournie
BACKGROUND: Since its first report in 2007, avian influenza (AI) has been endemic in Bangladesh. While live poultry marketing is widespread throughout the country and known to influence AI dissemination and persistence, trading patterns have not been described. The aim of this study is to assess poultry trading practices and features of the poultry trading networks which could promote AI spread, and their potential implications for disease control and surveillance. Data on poultry trading practices was collected from 849 poultry traders during a cross-sectional survey in 138 live bird markets (LBMs) across 17 different districts of Bangladesh...
January 12, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29329003/modified-forest-rotation-lengths-long-term-effects-on-landscape-scale-habitat-availability-for-specialized-species
#13
Jean-Michel Roberge, Karin Öhman, Tomas Lämås, Adam Felton, Thomas Ranius, Tomas Lundmark, Annika Nordin
We evaluated the long-term implications from modifying rotation lengths in production forests for four forest-reliant species with different habitat requirements. By combining simulations of forest development with habitat models, and accounting both for stand and landscape scale influences, we projected habitat availability over 150 years in a large Swedish landscape, using rotation lengths which are longer (+22% and +50%) and shorter (-22%) compared to current practices. In terms of mean habitat availability through time, species requiring older forest were affected positively by extended rotations, and negatively by shortened rotations...
January 9, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29327966/ocular-histomorphometry-of-free-living-common-kestrels-falco-tinnunculus
#14
Karin Werther, Cinthia Graziela Candioto, Rüdiger Korbel
We evaluated the histomorphometry of the eye structures (cornea, retina, choroid, and sclera) of 13 adult free-living common kestrels ( Falco tinnunculus). Birds included in the study were euthanatized because of severe trauma from a motor vehicle injury. The eyes were enucleated immediately after euthanasia, fixed in 10% buffered formalin, and decalcified. The right eyes were cut vertically (dorsoventrally) and the left eyes cut horizontally (temporonasally). Tissues were processed, stained with hematoxylin and eosin, and evaluated by an image analysis software...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327964/endoscopic-removal-of-gastrointestinal-foreign-bodies-in-two-african-grey-parrots-psittacus-erithacus-and-a-hyacinth-macaw-anodorhynchus-hyacinthinus
#15
Robert J Cotton, Stephen J Divers
Two African grey parrots ( Psittacus erithacus) and one hyacinth macaw ( Anodorhynchus hyacinthinus) were examined because of varying clinical signs ranging from general lethargy to seizure-like episodes and regurgitation. Radiography and fluoroscopy in the 3 birds demonstrated variable degrees of gastric abnormalities, suggesting the presence of foreign material or stricture-like defects. Upper gastrointestinal rigid endoscopy by ingluviotomy revealed foreign bodies that were removed endoscopically. Minor postoperative complications were pulmonary congestion or mild aspiration and cardiac arrhythmia, both of which resolved, and no serious deleterious effects were associated with endoscopy in the short or long term...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327962/acute-fatal-presumptive-xylitol-toxicosis-in-cape-sugarbirds-promerops-cafer
#16
Brett Richard Gardner, Emily P Mitchell
Twenty-nine wild Cape sugarbirds ( Promerops cafer) died acutely after ingestion of a homemade xylitol nectar solution from a bird feeder. The most aggressive feeders were first affected. Most birds showed clinical signs within 15 minutes of nectar ingestion, including incoordination, weakness, falling from perches, collapse, and death. A few birds showing clinical signs seemed to spontaneously recover and fly away. Full necropsy examinations done on 27 birds were hampered by freezing artifact and autolysis, but results indicated death was caused by the consequences of acute hypoglycemia...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327961/tracheal-resection-in-a-secretary-bird-sagittarius-serpentarius-with-granulomatous-foreign-body-induced-tracheitis
#17
Carsten Ludwig, Imke Lueders, Volker Schmidt, Hermann Kempf
A 24-year-old female secretary bird ( Sagittarius serpentarius) was presented with acute, mild dyspnea occurring only during feeding times. Despite initial conservative therapy consisting of antibiotics and antifungal, antiparasitic, and anti-inflammatory drugs, the dyspnea worsened progressively, resulting in severe respiratory distress. Radiographs of the trachea suggested stenosis in the caudal one-third of the trachea. Tracheal endoscopy revealed an obstruction of approximately 90% of the tracheal lumen, in addition to mild suspected aspergillosis of the air sacs...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327960/pharmacokinetics-of-a-single-intramuscular-injection-of-long-acting-ceftiofur-crystalline-free-acid-in-cattle-egrets-bubulcus-ibis
#18
Jennifer A Waldoch, Sherry K Cox, Douglas L Armstrong
We determined the pharmacokinetic properties of ceftiofur crystalline-free acid (CCFA), a long-acting antibiotic, after a single intramuscular injection in cattle egrets ( Bubulcus ibis). A dose of 20 mg/kg was administered intramuscularly to 18 birds and blood samples were collected via jugular venipuncture at 1, 2, 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, and 240 hours after CCFA administration. Plasma concentrations of ceftiofur free acid equivalents (CFAEs) were measured via high-performance liquid chromatography...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327957/unusual-outbreak-of-fatal-clostridiosis-in-a-group-of-captive-brown-pelicans-pelecanus-occidentalis
#19
Imke Lueders, Carsten Ludwig, Johanna Kasberg, Christoph Georg Baums, Kerstin Klimke, Martin B Dorner, Dana Ströse, Volker Schmidt
Fatal clostridial infections and clostridial toxicoses are common in birds. Most fatalities are associated with toxin production and progress rapidly, often within 24 hours of infection. We describe an unusual and protracted course of disease in 6 captive brown pelicans ( Pelecanus occidentalis), which was believed to result from toxicosis by toxovar A produced by a mixed infection with Clostridium sordellii and Clostridium perfringens. Although the first death in the group occurred 3 days after signs of illness were documented, the remaining birds died over a 38-day period despite aggressive antibiotic and supportive therapy...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327956/the-incidence-and-treatment-outcomes-of-macrorhabdus-ornithogaster-infection-in-budgerigars-melopsittacus-undulatus-in-a-veterinary-clinic
#20
Ronja Püstow, Maria-Elisabeth Krautwald-Junghanns
Macrorhabdus ornithogaster, avian gastric yeast, is a common cause of gastrointestinal disease in budgerigars ( Melopsittacus undulatus). To better understand the clinical disease in budgerigars presented in a practice population, we reviewed the occurrence, clinical signs, and treatment success of M ornithogaster disease in budgerigars during a 2.5-year period at the Clinic for Birds and Reptiles, University of Leipzig (Leipzig, Germany). The yeast was diagnosed by microscopic examination of fresh fecal samples...
December 2017: Journal of Avian Medicine and Surgery
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