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https://www.readbyqxmd.com/read/28639466/genetic-characterization-of-sarcoptes-scabiei-from-black-bears-ursus-americanus-and-other-hosts-in-eastern-united-states
#1
Sarah Peltier, Justin D Brown, Mark Ternent, Kevin D Niedringhaus, Krysten Schuler, Elizabeth Bunting, Megan Kirchgessner, Michael John Yabsley
Since the early 1990s there has been an increase in the number of cases and geographic expansion of severe mange in the black bear (Ursus americanus) population in Pennsylvania. Although there are 3 species of mites associated with mange in bears, Sarcoptes scabiei has been identified as the etiologic agent in these Pennsylvania cases. Historically S. scabiei-associated mange in bears has been uncommon and sporadic although it is widespread and relatively common in canid populations. To better understand this recent emergence of sarcoptic mange in bears in Pennsylvania and nearby states, we genetically characterized S...
June 22, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28627433/comparison-of-g-protein-sequences-of-south-african-street-rabies-viruses-showing-distinct-progression-of-the-disease-in-a-mouse-model-of-experimental-rabies
#2
Wonhyo Seo, Alexandre Servat, Florence Cliquet, Jenkins Akinbowale, Christophe Prehaud, Monique Lafon, Claude Sabeta
Rabies is a fatal zoonotic disease and infections generally lead to a fatal encephalomyelitis in both humans and animals. In South Africa, domestic (dogs) and the wildlife (yellow mongoose) host species maintain the canid and mongoose rabies variants respectively. In this study, pathogenicity differences of South African canid and mongoose rabies viruses were investigated in a murine model, by assessing the progression of clinical signs and survivorship. Comparison of glycoprotein gene sequences revealed amino acid differences that may underpin the observed pathogenicity differences...
June 13, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/28624295/molecular-characterization-of-sarcocystis-spp-in-intestine-mucosal-scrapings-and-fecal-samples-of-pampas-fox-lycalopex-gymnocercus
#3
Nathalia Paula Scioscia, María Laura Gos, Guillermo María Denegri, Gastón Moré
Sarcocystis spp. are obligatory intracellular protozoan parasites which can infect humans and animals. Most of Sarcocystis species were identified based on the detection of muscle cysts in different intermediate hosts (IH). Regarding to natural infection in definitive host, there are few reports which have reached to determining species of Sarcocystis. The present work was aimed to studying the occurrence of Sarcocystis spp. (oocysts and sporocysts) in mucosal scrapings of small intestine and fecal samples of one the most abundant wild canids from South America, Lycalopex gymnocercus (Pampas fox), and to identify the Sarcocystis spp...
June 14, 2017: Parasitology International
https://www.readbyqxmd.com/read/28612434/effect-of-increasing-taurine-and-methionine-supplementation-on-urinary-taurine-excretion-in-a-model-insectivore-the-giant-anteater-myrmecophaga-tridactyla
#4
S A Nofs, E S Dierenfeld, R C Backus
The giant anteater (Mymercophaga tridactyla) is a highly specialized insectivore for which nutrient requirements are not clearly established, making diet formulation challenging for this species. Multiple clinical reports suggest anteaters have an obligate dietary taurine (TAU) requirement. Sulphur amino acid (SAA) metabolism in adult anteaters was evaluated using noninvasive methods to measure TAU synthesis potential from dietary methionine (MET) and a basal diet containing on a dry matter (DM) basis 1.7 mg TAU/kg DM and 6...
June 14, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28606328/influence-of-physical-and-chemical-factors-on-the-embryonation-hatching-and-infectivity-of-spirocerca-lupi
#5
Alicia Rojas, Niva Freedberg, Alex Markovics, Yuval Gottlieb, Gad Baneth
Spirocerca lupi is a parasitic nematode which causes spirocercosis, a severe disease of dogs. Its life cycle involves dung beetles as intermediate hosts and canids as definitive hosts. The effect of different physical conditions and chemical factors on the embryonation and hatching of S. lupi eggs were investigated in this study in order to understand the triggers for progression in the early development of this parasite. Exposure to potassium dichromate significantly enhanced the embryonation of eggs compared to formaldehyde and controls (p<0...
August 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28585301/analysis-of-complete-genome-sequence-and-major-surface-antigens-of-neorickettsia-helminthoeca-causative-agent-of-salmon-poisoning-disease
#6
Mingqun Lin, Katherine Bachman, Zhihui Cheng, Sean C Daugherty, Sushma Nagaraj, Naomi Sengamalay, Sandra Ott, Al Godinez, Luke J Tallon, Lisa Sadzewicz, Claire Fraser, Julie C Dunning Hotopp, Yasuko Rikihisa
Neorickettsia helminthoeca, a type species of the genus Neorickettsia, is an endosymbiont of digenetic trematodes of veterinary importance. Upon ingestion of salmonid fish parasitized with infected trematodes, canids develop salmon poisoning disease (SPD), an acute febrile illness that is particularly severe and often fatal in dogs without adequate treatment. We determined and analysed the complete genome sequence of N. helminthoeca: a single small circular chromosome of 884 232 bp encoding 774 potential proteins...
July 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28583158/gastrointestinal-parasites-of-canids-a-latent-risk-to-human-health-in-tunisia
#7
Myriam Oudni-M'rad, Raja Chaâbane-Banaoues, Selim M'rad, Fatma Trifa, Habib Mezhoud, Hamouda Babba
BACKGROUND: Although data on the parasite environmental contamination are crucial to implement strategies for control and treatment, information about zoonotic helminths is very limited in Tunisia. Contamination of areas with canid faeces harboring infective parasite elements represents a relevant health-risk impact for humans. The aim of this study was to assess the environmental contamination with eggs and oocysts of gastrointestinal parasites of dogs and wild canids in Tunisia with special attention to those that can be transmitted to humans...
June 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28529982/detection-of-hammondia-heydorni-dna-in-feces-collected-in-and-around-an-ohio-wildlife-conservation-center
#8
D Sinnott, K Moreno Torres, B Wolfe, R Garabed, A E Marsh
This study aimed to identify DNA attributed to Hammondia heydorni oocysts in the feces of wild canids in and around an Ohio wildlife conservation center. Two hundred and eighty-five wild canid fecal samples were analyzed using PCR with melting curve analysis to detect coccidian DNA. Coccidia-positive samples were further subjected to H. heydorni-specific and N. caninum-specific PCR assays. Samples positive by the H. heydorni-specific assay were additionally analyzed with a PCR assay to distinguish H. heydorni from Hammondia triffittae...
December 2016: Veterinary Parasitology (Amsterdam)
https://www.readbyqxmd.com/read/28503369/direct-evidence-of-megamammal-carnivore-interaction-decoded-from-bone-marks-in-historical-fossil-collections-from-the-pampean-region
#9
Karina Vanesa Chichkoyan, Borja Figueirido, Margarita Belinchón, José Luis Lanata, Anne-Marie Moigne, Bienvenido Martínez-Navarro
Pleistocene South American megafauna has traditionally attracted the interest of scientists and the popular media alike. However, ecological interactions between the species that inhabited these ecosystems, such as predator-prey relationships or interspecific competition, are poorly known. To this regard, carnivore marks imprinted on the fossil bones of megamammal remains are very useful for deciphering biological activity and, hence, potential interspecific relationships among taxa. In this article, we study historical fossil collections housed in different European and Argentinean museums that were excavated during the 19th and early 20th centuries in the Pampean region, Argentina, in order to detect carnivore marks on bones of megamammals and provide crucial information on the ecological relationships between South American taxa during the Pleistocene...
2017: PeerJ
https://www.readbyqxmd.com/read/28451590/molecular-signaling-of-progesterone-growth-hormone-wnt-and-her-in-mammary-glands-of-dogs-rodents-and-humans-new-treatment-target-identification
#10
REVIEW
Elpetra P M Timmermans-Sprang, Ana Gracanin, Jan A Mol
Mammary tumors are the most common form of neoplasia in the bitch. Female dogs are protected when they are spayed before the first estrus cycle, but this effect readily disappears and is already absent when dogs are spayed after the second heat. As the ovaries are removed during spaying, ovarian steroids are assumed to play an essential role in tumor development. The sensitivity toward tumor development is already present during early life, which may be caused by early mutations in stem cells during the first estrus cycles...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28429096/differences-in-problem-solving-between-canid-populations-do-domestication-and-lifetime-experience-affect-persistence
#11
Lauren Brubaker, Sandipan Dasgupta, Debottam Bhattacharjee, Anindita Bhadra, Monique A R Udell
Past research has suggested that a variety of factors, phylogenetic and ontogenetic, play a role in how canines behave during problem-solving tasks and the degree to which the presence of a human influences their problem-solving behaviour. While comparisons between socialized wolves and domestic dogs have commonly been used to tease apart these predictive factors, in many cases a single dog population, often pets, have been used for these comparisons. Less is understood about how different populations of dogs may behave when compared with wolves, or with each other, during an independent problem-solving task...
July 2017: Animal Cognition
https://www.readbyqxmd.com/read/28428308/genome-sequence-of-canine-adenovirus-type-1-isolated-from-a-wolf-canis%C3%A2-lupus-in-southern-italy
#12
Federica Pizzurro, Maurilia Marcacci, Guendalina Zaccaria, Massimiliano Orsini, Francesca Cito, Alfonso Rosamilia, Ludovica Di Renzo, Daniela Malatesta, Daria Di Sabatino, Alessio Lorusso
Canine adenovirus type 1 (CAdV-1), a DNA virus of the family Adenoviridae, causes infectious canine hepatitis, a highly contagious disease primarily affecting canids. In this report, we describe the isolation and whole-genome sequence of a CAdV-1 isolate from the liver of a free-ranging wolf (Canis lupus).
April 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28417226/the-repertoire-of-bitter-taste-receptor-genes-in-canids
#13
REVIEW
Shuai Shang, Xiaoyang Wu, Jun Chen, Huanxin Zhang, Huaming Zhong, Qinguo Wei, Jiakuo Yan, Haotian Li, Guangshuai Liu, Weilai Sha, Honghai Zhang
Bitter taste receptors (Tas2rs) play important roles in mammalian defense mechanisms by helping animals detect and avoid toxins in food. Although Tas2r genes have been widely studied in several mammals, minimal research has been performed in canids. To analyze the genetic basis of Tas2r genes in canids, we first identified Tas2r genes in the wolf, maned wolf, red fox, corsac fox, Tibetan fox, fennec fox, dhole and African hunting dog. A total of 183 Tas2r genes, consisting of 118 intact genes, 6 partial genes and 59 pseudogenes, were detected...
April 17, 2017: Amino Acids
https://www.readbyqxmd.com/read/28410591/eurasian-golden-jackal-as-host-of-canine-vector-borne-protists
#14
Barbora Mitková, Kristýna Hrazdilová, Gianluca D'Amico, Georg Gerhard Duscher, Franz Suchentrunk, Pavel Forejtek, Călin Mircea Gherman, Ioana Adriana Matei, Angela Monica Ionică, Aikaterini Alexandra Daskalaki, Andrei Daniel Mihalca, Jan Votýpka, Pavel Hulva, David Modrý
BACKGROUND: Jackals are medium-sized canids from the wolf-like clade, exhibiting a unique combination of ancestral morphotypes, broad trophic niches, and close phylogenetic relationships with the wolf and dog. Thus, they represent a potential host of several pathogens with diverse transmission routes. Recently, populations of the Eurasian golden jackal Canis aureus have expanded into the Western Palaearctic, including most of Europe. The aim of our study was to examine Eurasian golden jackals from Romania, Czech Republic and Austria for a wide spectrum of vector-borne protists and to evaluate the role of this species as a reservoir of disease for domestic dogs and/or humans...
April 14, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28376903/the-prevalence-and-impact-of-babesia-canis-and-theileria-sp-in-free-ranging-grey-wolf-canis-lupus-populations-in-croatia
#15
Ana Beck, Doroteja Huber, Adam Polkinghorne, Andrea Gudan Kurilj, Valerija Benko, Vladimir Mrljak, Slaven Reljić, Josip Kusak, Irena Reil, Relja Beck
BACKGROUND: Babesia spp. and Theileria spp. are important emerging causes of disease in dogs. Alongside these domesticated hosts, there is increasing recognition that these piroplasms can also be found in a range of wild animals with isolated reports describing the presence of these pathogen in foxes (Vulpes vulpes) and captive grey wolves (Canis lupus). The prevalence and impact of these infections in free-ranging populations of canids are unknown. To gain a better insight into the epidemiology and pathogenesis of piroplasm infections in free-ranging grey wolves, pathological and molecular investigations into captive and free-ranging grey wolves in Croatia were performed...
April 4, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28375756/steel-jawed-leghold-traps-and-killing-neck-snares-similar-injuries-command-change-to-agreement-on-international-humane-trapping-standards
#16
Gilbert Proulx, Dwight Rodtka
According to the Agreement on International Humane Trapping Standards (AIHTS), which was signed by the European Community, Canada, and Russia in 1997, killing devices used for the capture of canids and other fur-bearing nonhuman animals should render an animal irreversibly unconscious within 300 s. However, killing neck snares are not included in the agreement. In this commentary, a parallel is drawn between injuries caused by steel-jawed leghold traps, which have been banned by the AIHTS signatory countries, and killing neck snares to demonstrate that these snares should also be included in international humane trapping standards (i...
April 2017: Journal of Applied Animal Welfare Science: JAAWS
https://www.readbyqxmd.com/read/28373601/an-epigenetic-aging-clock-for-dogs-and-wolves
#17
Michael J Thompson, Bridgett vonHoldt, Steve Horvath, Matteo Pellegrini
Several articles describe highly accurate age estimation methods based on human DNA-methylation data. It is not yet known whether similar epigenetic aging clocks can be developed based on blood methylation data from canids. Using Reduced Representation Bisulfite Sequencing, we assessed blood DNA-methylation data from 46 domesticated dogs (Canis familiaris) and 62 wild gray wolves (C. lupus). By regressing chronological dog age on the resulting CpGs, we defined highly accurate multivariate age estimators for dogs (based on 41 CpGs), wolves (67 CpGs), and both combined (115 CpGs)...
March 28, 2017: Aging
https://www.readbyqxmd.com/read/28363075/masticatory-muscle-myositis-in-a-gray-wolf-canis-lupus
#18
Marc Kent, Eric N Glass, Fernando A Castro, Andrew D Miller, Alexander de Lahunta
A 10-yr-old male, neutered gray wolf ( Canis lupus ) was presented for atrophy of the temporalis and masseter muscles. Clinical signs and magnetic resonance imaging were consistent with a myopathy. Positive serology for antibody titers directed against Type 2M myofibers, and the observation of a mixed mononuclear inflammatory cell infiltrate along with eosinophils and neutrophils within the temporalis muscle, were diagnostic for masticatory muscle myositis. Importantly, protozoal myositis was excluded based on other clinicopathologic data...
March 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28351684/tissue-distribution-and-functional-analysis-of-vitellogenin-6-of-toxocara-canis
#19
Hong-Hong Zhu, Guang-Xu Ma, Yong-Fang Luo, Yong-Li Luo, Sha-Sha Yin, Yi Xiong, Rong-Qiong Zhou
Toxocara canis is an common intestinal nematode of canids and the principal causative agent of human toxocariasis. Vitellogenin (Vg), a source of amino acids and lipids in the eggs, are considered to play an important role in embryo development of a wide range of organisms. In the present study, the transcriptional levels of Tc-vit-6 gene in male and female adult T. canis were determined by quantitative real-time PCR, which indicated high transcription of Tc-vit-6 in the intestine, reproductive tract and body wall of male and female adult T...
June 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28349853/molecular-identification-of-cryptic-cysticercosis-taenia-ovis-krabbei-in-wild-intermediate-and-domestic-definitive-hosts
#20
N Formenti, M Chiari, T Trogu, A Gaffuri, C Garbarino, M B Boniotti, C Corradini, P Lanfranchi, N Ferrari
The complex life cycle of taeniids represents an ideal model of a multi-host system. The complexity of these parasites can therefore cover the epidemiological issues of the interface between wild and domestic animals, especially once spatial overlap between wild and domestic definitive and intermediate hosts occurs. Here we use the occurrence of Taenia ovis krabbei in two model areas as an example of this epidemiological complexity. In two contiguous areas in the Italian northern Apennines, two hunted roe deer (Capreolus capreolus) showed numerous cysticerci in the muscles of their whole body and an adult tapeworm was recorded in a semi-stray dog (Canis lupus familiaris)...
March 28, 2017: Journal of Helminthology
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