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https://www.readbyqxmd.com/read/28644827/what-drives-cooperative-breeding
#1
Walter D Koenig
Cooperative breeding, in which more than a pair of conspecifics cooperate to raise young at a single nest or brood, is widespread among vertebrates but highly variable in its geographic distribution. Particularly vexing has been identifying the ecological correlates of this phenomenon, which has been suggested to be favored in populations inhabiting both relatively stable, productive environments and in populations living under highly variable and unpredictable conditions. Griesser et al. provide a novel approach to this problem, performing a phylogenetic analysis indicating that family living is an intermediate step between nonsocial and cooperative breeding birds...
June 23, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28644765/radioactivity-measurements-and-dosimetric-evaluation-in-meat-of-wild-birds
#2
Carla Roselli, Donatella Desideri, Chiara Cantaluppi, Federica Ceccotto, Laura Feduzi, Maria Assunta Meli
The aim of this study was to determine the background activity concentration of natural radionuclides and (137)Cesium (Cs) in meat of 14 migratory birds originating from central and northern Europe. This meat is largely consumed by the Italian population. (40)K, (210)Pb, and (137)Cs were determined by gamma spectrometry and (210)Po by alpha spectrometry. The mean (40)K activity concentration detected was 490 ± 117 Bq/kgdw. In all the samples, (210)Pb was below the limit of detection (LOD), and therefore it was not possible to calculate the ratio (210)Po/(210)Pb...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644743/sarcocystis-jamaicensis-n-sp-from-red-tailed-hawks-buteo-jamaicensis-definitive-host-and-ifn-%C3%AE-gene-knockout-mice-as-experimental-intermediate-host
#3
Shiv Verma, Alexa Rosypal Von Dohlen, J Mowery, D Scott, B Rosenthal, J P Dubey, David Lindsay
Here, we report a new species of Sarcocystis with red-tailed hawk (RTH) as the natural definitive host and IFN-γ gene knockout (KO) mice as an experimental intermediate host in which sarcocysts form in muscle. Two RTHs submitted to the Carolina Raptor Center, Huntersville, North Carolina, were euthanized because they could not be rehabilitated and released. Fully sporulated 12.5 x 9.9 m sized sporocysts were found in intestinal scrapings of both hawks. Sporocysts were orally fed to laboratory-reared outbred Swiss Webster mice (SW) (Mus musculus) and also to KO mice...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28644715/biological-responses-of-the-american-coot-fulica-americana-in-wetlands-with-contrasting-environmental-conditions-basin-of-m%C3%A3-xico
#4
María Eugenia López-Islas, Itzel Ibarra-Meza, Esperanza Ortiz-Ordóñez, Liliana Favari, J Elías Sedeño-Díaz, Eugenia López-López
Wetland ecosystems are subject to severe impacts (physical and chemical) and to the input of various xenobiotics that provoke toxicological consequences. Waterbirds are potential sentinel species of these environments. To analyze how habitat conditions affect the health of Fulica americana, early-warning biomarkers, histopathology, somatic indices, and water quality were examined in two wetlands of the Basin of Mexico: Xochimilco, an urban wetland highly eutrophic with a mixture of pollutants, and Tecocomulco (the reference site), a rural wetland with hunting migratory birds in winter, and with some agricultural contaminants...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644304/abnormal-retinal-reflectivity-to-short-wavelength-light-in-type-2-idiopathic-macular-telangiectasia
#5
Ferenc B Sallo, Irene Leung, Meike Zeimer, Traci E Clemons, Adam M Dubis, Marcus Fruttiger, Daniel Pauleikhoff, Emily Y Chew, Catherine Egan, Tunde Peto, Alan C Bird
PURPOSE: Macular telangiectasia Type 2 (MacTel) is a bilateral, progressive, potentially blinding retinal disease characterized by vascular and neurodegenerative signs, including an increased parafoveal reflectivity to blue light. Our aim was to investigate the relationship of this sign with other signs of macular telangiectasia Type 2 in multiple imaging modalities. METHODS: Participants were selected from the MacTel Type 2 study, based on a confirmed diagnosis and the availability of images...
June 21, 2017: Retina
https://www.readbyqxmd.com/read/28644089/evaluation-of-high-dosages-of-oral-meloxicam-in-american-kestrels-falco-sparverius
#6
Noémie M Summa, David Sanchez-Migallon Guzman, Sylvain Larrat, Eric Troncy, David M Bird, Stéphane Lair, Guy Fitzgerald
To evaluate the toxicity of short-term high doses of meloxicam in American kestrels ( Falco sparverius ), 32 male captive-born, 1- to 4-year-old American kestrels were randomly assigned to 4 groups: 3 groups treated with meloxicam (n = 9 per group) and a control group (n = 5). Meloxicam was administered orally via feeding tube in the proventriculus at 2, 10, and 20 mg/kg every 12 hours for 7 days for the treatment groups, while the control group received saline solution. The birds were evaluated for the presence of clinical signs, abnormalities in the complete blood cell count and in the plasma biochemical panel for the 20-mg/kg group, and gross and histopathologic lesions...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644086/single-dose-pharmacokinetics-of-piperacillin-tazobactam-in-hispaniolan-amazon-parrots-amazona-ventralis
#7
James W Carpenter, Thomas N Tully, Ronette Gehring, David Sanchez-Migallon Guzman
To determine the pharmacokinetics of piperacillin/tazobactam in Hispaniolan Amazon parrots ( Amazona ventralis ), 8 healthy adult parrots of both sexes were used in a 2-part study. In a pilot study, piperacillin (87 mg/kg) in combination with tazobactam (11 mg/kg) was administered intramuscularly (IM) to 2 birds, and blood samples were obtained at 0, 0.5, 1, 1.5, 2, 3, 4, 6, 8, and 10 hours after administration. Based on the results obtained, a main study was done in which piperacillin/tazobactam was administered at 2 different doses...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644085/pharmacokinetics-of-a-sustained-release-formulation-of-buprenorphine-after-intramuscular-and-subcutaneous-administration-to-american-kestrels-falco-sparverius
#8
David Sanchez-Migallon Guzman, Heather K Knych, Glenn H Olsen, Joanne R Paul-Murphy
Previous studies have validated the clinical use of opioids with μ-receptor affinities for pain management in raptors. Buprenorphine appears to have a longer duration of action and minimal adverse effects when compared to other opioids in American kestrels ( Falco sparverius ). To determine the pharmacokinetics of a sustained release formulation of buprenorphine in kestrels, we administered a commercially available product (Buprenorphine SR-LAB; Wildlife Pharmaceuticals, Windsor, CO, USA) intramuscularly and subcutaneously to adult kestrels in a partial-crossover experimental design study...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644084/comparison-of-two-methods-for-determining-prevalence-of-macrorhabdus-ornithogaster-in-a-flock-of-captive-budgerigars-melopsittacus-undulatus
#9
Patrick J Sullivan, Edward C Ramsay, Cheryl B Greenacre, Andrew C Cushing, Xiaojuan Zhu, Michael P Jones
Macrorhabdus ornithogaster is a yeast organism that infects multiple species of captive and wild birds. Diagnosis of infection in vivo has proven difficult historically, as shedding can be intermittent, and not all positive animals are clinically ill. We compared polymerase chain reaction (PCR) of cloacal swab samples and fecal Gram's stain (FGS) for diagnosis of active shedding of M ornithogaster in a captive flock of budgerigars ( Melopsittacus undulatus ). Of the 100 birds sampled, 57 (57%) were positive for M ornithogaster by PCR and 24 (24%) were positive for M ornithogaster by FGS...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644081/effects-of-added-lipids-on-digestibility-and-nitrogen-balance-in-oiled-common-murres-uria-aalge-and-western-grebes-aechmophorus-occidentalis-fed-four-formulations-of-a-critical-care-diet
#10
Rebecca S Duerr, Kirk C Klasing
Nutritional support is a primary therapy administered to oiled animals during responses to oil spills, but data informing nutritional decision-making during events are limited. In this study, 44 common murres ( Uria aalge ) and 6 Western grebes ( Aechmophorus occidentalis ), naturally oiled by oceanic seeps off the coast of Ventura and Santa Barbara Counties, CA, USA, were assigned to 1 of 4 groups fed diets with varying levels (6.8% [no added oil], 11%, and 20%) and types (salmon, corn) of oil added to a partially purified basal diet...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644080/determination-of-gastrointestinal-transit-times-in-barred-owls-strix-varia-by-contrast-fluoroscopy
#11
Grayson A Doss, Jackie M Williams, Christoph Mans
Contrast imaging studies are routinely performed in avian patients when an underlying abnormality of the gastrointestinal (GI) tract is suspected. Fluoroscopy offers several advantages over traditional radiography and can be performed in conscious animals with minimal stress and restraint. Although birds of prey are commonly encountered as patients, little is known about GI transit times and contrast imaging studies in these species, especially owls. Owls are commonly encountered in zoological, educational, and wildlife settings...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644079/a-disseminated-cryptococcus-gattii-vgiia-infection-in-a-citron-crested-cockatoo-cacatua-sulphurea-citrinocristata-in-qu%C3%A3-bec-canada
#12
Édouard O Maccolini, Philippe J Dufresne, Sophie Ann Aschenbroich, Brittany McHale, Julie-Hélène Fairbrother, Christian Bédard, Julie A Hébert
Cryptococcus gattii infection in mammals and birds has been confined historically to tropical and subtropical regions in Australia, Southeast Asia, Africa, and South America. Since the early 2000s, numerous reports describe the emergence of C. gattii on the Pacific Coast of North America. We report on a C. gattii infection in an 8-year-old male citron-crested cockatoo (Cacatua sulphurea citrinocristata) hatched on the Canadian Pacific Coast and raised in the province of Québec, Canada. The bird developed a slow growing ulcerated, fleshy, crusty, and hemorrhagic mass infiltrating the left lower rhamphotheca...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644078/plasma-concentrations-of-itraconazole-voriconazole-and-terbinafine-when-delivered-by-an-impregnated-subcutaneous-implant-in-japanese-quail-coturnix-japonica
#13
Marcy J Souza, Patrick Redig, Sherry K Cox
Aspergillosis is a common fungal infection in both wild and pet birds. Although effective antifungal medications are available, treatment of aspergillosis can require months of medication administration, which entails stressful handling one or more times per day. This study examined the delivery of the antifungal drugs itraconazole, voriconazole, and terbinafine to Japanese quail ( Coturnix japonica ) via an impregnated implant. Implants contained 0.5, 3, 8, or 24 mg of itraconazole, voriconazole, or terbinafine...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644077/leiomyosarcoma-of-the-wing-in-a-vieilott-s-fireback-pheasant-lophura-rufa
#14
Martín A Zordan, Michael M Garner, Rebecca Smedley, Dana Neelis, Carlos R Sánchez
A 15-year-old, female Vieilott's fireback pheasant (Lophura rufa) presented with a 2-day history of a drooping right wing. Examination revealed severe soft tissue swelling in the area extending from the right shoulder to the humeral-radio-ulnar joint with associated bruising and feather loss. Results of a complete blood cell count revealed marked heterophilia and lymphocytosis, and results of serum biochemical analysis showed severe increases in creatine kinase and aspartate aminotransferase activities, hypoproteinemia, and hypoalbuminemia...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28644076/a-novel-surgical-approach-to-avian-femorotibiotarsal-luxation-repair
#15
Anna E McRee, Thomas N Tully, Javier G Nevarez, Julia Sumner, Anderson Favero da Cunha
A 3-month-old male umbrella cockatoo (Cacatua alba) was presented because of acute non-weight-bearing lameness of the right leg. Marked soft tissue swelling was present around the femorotibiotarsal (stifle) joint, and the radiographic diagnosis was right medial femorotibiotarsal subluxation. Surgical management was elected, and the stifle joint was approached via a lateral parapatellar incision. Joint exploration revealed damage to the lateral meniscus, tendon of origin of the cranial tibial muscle, and cranial cruciate ligament...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28642965/erratum-to-development-of-a-unifying-target-and-consensus-indicators-for-global-surgical-systems-strengthening-proposed-by-the-global-alliance-for-surgery-obstetric-trauma-and-anaesthesia-care-the-g4-alliance
#16
Adil Haider, John W Scott, Colin D Gause, Mira Meheš, Grace Hsiung, Albulena Prelvukaj, Dana Yanocha, Lauren M Baumann, Faheem Ahmed, Na'eem Ahmed, Sara Anderson, Herve Angate, Lisa Arfaa, Horacio Asbun, Tigistu Ashengo, Kisembo Asuman, Ruben Ayala, Stephen Bickler, Saul Billingsley, Peter Bird, Matthijs Botman, Marilyn Butler, Jo Buyske, Angelo Capozzi, Kathleen Casey, Charles Clayton, James Cobey, Michael Cotton, Dan Deckelbaum, Miliard Derbew, Catherine deVries, Jeanne Dillner, Max Downham, Natalie Draisin, David Echinard, Sohier Elneil, Ahmed ElSayed, Abigail Estelle, Allen Finley, Erica Frenkel, Philip K Frykman, Florin Gheorghe, Julian Gore-Booth, Richard Henker, Jaymie Henry, Orion Henry, Laura Hoemeke, David Hoffman, Iko Ibanga, Eric V Jackson, Pankaj Jani, Walter Johnson, Andrew Jones, Zeina Kassem, Asuman Kisembo, Abbey Kocan, Sanjay Krishnaswami, Robert Lane, Asad Latif, Barbara Levy, Dimitrios Linos, Peter Linz, Louis A Listwa, Declan Magee, Emmanuel Makasa, Michael L Marin, Claude Martin, Kelly McQueen, Jamie Morgan, Richard Moser, Robert Neighbor, William M Novick, Stephen Ogendo, Akinyinka Omigbodun, Bisola Onajin-Obembe, Neil Parsan, Beverly K Philip, Raymond Price, Shahnawaz Rasheed, Marjorie Ratel, Cheri Reynolds, Steven M Roser, Jackie Rowles, Lubna Samad, John Sampson, Harshadkumar Sanghvi, Marchelle L Sellers, David Sigalet, Bruce C Steffes, Erin Stieber, Mamta Swaroop, John Tarpley, Asha Varghese, Julie Varughese, Richard Wagner, Benjamin Warf, Neil Wetzig, Susan Williamson, Joshua Wood, Anne Zeidan, Lewis Zirkle, Brendan Allen, Fizan Abdullah
No abstract text is available yet for this article.
June 22, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28642430/avian-egg-shape-form-function-and-evolution
#17
Mary Caswell Stoddard, Ee Hou Yong, Derya Akkaynak, Catherine Sheard, Joseph A Tobias, L Mahadevan
Avian egg shape is generally explained as an adaptation to life history, yet we currently lack a global synthesis of how egg-shape differences arise and evolve. Here, we apply morphometric, mechanistic, and macroevolutionary analyses to the egg shapes of 1400 bird species. We characterize egg-shape diversity in terms of two biologically relevant variables, asymmetry and ellipticity, allowing us to quantify the observed morphologies in a two-dimensional morphospace. We then propose a simple mechanical model that explains the observed egg-shape diversity based on geometric and material properties of the egg membrane...
June 23, 2017: Science
https://www.readbyqxmd.com/read/28642272/networks-underpinning-symbiosis-revealed-through-cross-species-eqtl-mapping
#18
Yuelong Guo, Sylwia Fudali, Jacinta Gimeno, Peter DiGennaro, Stella Chang, Valerie M Williamson, David McK Bird, Dahlia M Nielsen
Organisms engage in extensive cross-species molecular dialogue, yet the underlying molecular actors are known for only a few interactions. Many techniques have been designed to uncover genes involved in signaling between organisms. Typically, these focus on only one of the partners. We developed an expression quantitative trait locus (eQTL) mapping-based approach to identify cause-and-effect relationships between genes from two partners engaged in an interspecific interaction. We demonstrated the approach by assaying expression of ninety-eight isogenic plants (Medicago truncatula), each inoculated with a genetically distinct line of the diploid parasitic nematode Meloidogyne hapla With this design, systematic differences in gene expression across host plants could be mapped to genetic polymorphisms of their infecting parasites...
June 22, 2017: Genetics
https://www.readbyqxmd.com/read/28642015/convergent-and-unidirectional-evolution-of-extremely-long-aedeagi-in-the-largest-feather-mite-genus-proctophyllodes-acari-proctophyllodidae-evidence-from-comparative-molecular-and-morphological-phylogenetics
#19
Pavel B Klimov, Sergey V Mironov, Barry M OConnor
Proctophyllodid feather mites (400+ species) are permanent (full-time) symbionts commonly occurring on passerine birds. Phenotypic evolution of these mites appears to be greatly influenced by characters related to reproduction (>87.5% of a total of 32 taxonomically important discrete characters) and male genitalic characters (21.9%). Because sexual selection could the major evolutionary driver in this system, we test the theoretical expectation that genitalic or sexually dimorphic characters should evolve more rapidly and divergently then other characters...
June 19, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28641575/phylogenetic-and-paleobotanical-evidence-for-late-miocene-diversification-of-the-tertiary-subtropical-lineage-of-ivies-hedera-l-araliaceae
#20
V Valcárcel, B Guzmán, N G Medina, P Vargas, J Wen
BACKGROUND: Hedera (ivies) is one of the few temperate genera of the primarily tropical Asian Palmate group of the Araliaceae, which extends its range out of Asia to Europe and the Mediterranean basin. Phylogenetic and phylogeographic results suggested Asia as the center of origin and the western Mediterranean region as one of the secondary centers of diversification. The bird-dispersed fleshy fruits of ivies suggest frequent dispersal over long distances (e.g. Macaronesian archipelagos), although reducing the impact of geographic barriers to gene flow in mainland species...
June 22, 2017: BMC Evolutionary Biology
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