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https://www.readbyqxmd.com/read/28098220/comparative-transcriptome-analysis-of-raccoon-dog-skin-to-determine-melanin-content-in-hair-and-melanin-distribution-in-skin
#1
Zhanyu Du, Kai Huang, Jiaping Zhao, Xingchao Song, Xiumei Xing, Qiong Wu, Linbo Zhang, Chao Xu
The raccoon dog (Nyctereutes procyonoides) is an important canid fur-bearing animal species worldwide. Chinese raccoon dogs that present a white mutation, especially those with a white coat. Exploring melanin biosynthesis in the hair and skin of raccoon dogs is important for understanding the survival and evolutionary mechanisms of them. In this study, we measured the content of melanin in the hair of two types of raccoon dog and generated stained slices of skin tissue. The results indicated that melanin biosynthesis occurs in the wild-type (W) and white-type (B) raccoon dog skin, although less melanin is produced in B skin...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074717/endosulfan-poisoning-in-canids-and-felids-in-the-calabria-region-of-southern-italy
#2
Antonella De Roma, Carmela Rossini, Caterina Riverso, Giorgio Galiero, Mauro Esposito
Endosulfan, a highly toxic insecticide and acaricide, was globally banned under the Stockholm Convention in May 2011 because of its threats to human health and the environment. Despite the ban on its use, endosulfan is still present in the environment, causing poisoning events in domestic animals and wildlife. Toxicologic analysis of poisoned animals conducted by the Istituto Zooprofilattico Sperimentale del Mezzogiorno revealed that in the past 3 y, this pesticide has not disappeared in the regions of interest...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28064464/ungulate-predation-and-ecological-roles-of-wolves-and-coyotes-in-eastern-north-america
#3
John F Benson, Karen M Loveless, Linda Y Rutledge, Brent R Patterson
Understanding the ecological roles of species that influence ecosystem processes is a central goal of ecology and conservation biology. Eastern coyotes (Canis latrans) have ascended to the role of apex predator across much of eastern North America since the extirpation of wolves (Canis spp.) and there has been considerable confusion regarding their ability to prey on ungulates and their ecological niche relative to wolves. Eastern wolves (C. lycaon) are thought to have been the historical top predator in eastern deciduous forests and have previously been characterized as deer specialists that are inefficient predators of moose because of their smaller size relative to gray wolves (C...
January 8, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28043382/protozoan-and-helminth-parasite-fauna-of-free-living-croatian-wild-wolves-canis-lupus-analyzed-by-scat-collection
#4
Carlos Hermosilla, Sonja Kleinertz, Liliana M R Silva, Jörg Hirzmann, Djuro Huber, Josip Kusak, Anja Taubert
The European wolf (Canis lupus) is a large carnivore species present in limited areas of Europe with several small populations still being considered as endangered. Wolves can be infected by a wide range of protozoan and metazoan parasites with some of them affecting free-living wolf health condition. On this account, an epidemiological survey was conducted to analyze the actual parasite fauna in Croatian wild wolves. In total, 400 individual faecal samples were collected during field studies on wolf ecology in the years 2002-2011...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28043379/use-of-a-commercial-serologic-test-for-angiostrongylus-vasorum-for-the-detection-of-a-chabaudi-in-wildcats-and-a-daskalovi-in-badgers
#5
Georgiana Deak, Călin Mircea Gherman, Angela Monica Ionică, Aikaterini Alexandra Daskalaki, Ioana Adriana Matei, Gianluca D'Amico, Cristian Domşa, Nikola Pantchev, Andrei Daniel Mihalca, Vasile Cozma
Three species of the genus Angiostrongylus are known to infect European carnivores: A. vasorum (mainly in canids but also in other carnivores), A. chabaudi (in felids) and A. daskalovi (in mustelids). A. vasorum is responsible for clinically severe disease in domestic dogs, most commonly diagnosed based on fecal examination and serological detection of circulating antigens. Considering the poorly known host range and the challenging larval differentiation in the feces between the three species of Angiostrongylus infecting European carnivores, our aim was to evaluate the cross-reactivity of A...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28030946/first-record-of-giardia-assemblage-d-infection-in-farmed-raccoon-dogs-nyctereutes-procyonoides
#6
Piotr Solarczyk, Anna C Majewska, Szymon Jędrzejewski, Marcin T Górecki, Sławomir Nowicki, Piotr Przysiecki
The presence of Giardia genotypes was investigated in 18 raccoon dogs (Nyctereutes procyonoides) and 80 red foxes (Vulpes vulpes) on one farm. To demonstrate Giardia cysts, fresh and trichrome stained smears were microscopically screened. Two molecular markers were used for Giardia genotyping: a fragment of the beta-giardin gene and a fragment of the glutamate dehydrogenase gene. All faecal samples obtained from red foxes were negative. Giardia cysts were identified only in 2 of the 18 raccoon dogs. The result of genotyping and phylogenetic analysis showed that the G...
23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/27938335/genome-sequence-population-history-and-pelage-genetics-of-the-endangered-african-wild-dog-lycaon-pictus
#7
Michael G Campana, Lillian D Parker, Melissa T R Hawkins, Hillary S Young, Kristofer M Helgen, Micaela Szykman Gunther, Rosie Woodroffe, Jesús E Maldonado, Robert C Fleischer
BACKGROUND: The African wild dog (Lycaon pictus) is an endangered African canid threatened by severe habitat fragmentation, human-wildlife conflict, and infectious disease. A highly specialized carnivore, it is distinguished by its social structure, dental morphology, absence of dewclaws, and colorful pelage. RESULTS: We sequenced the genomes of two individuals from populations representing two distinct ecological histories (Laikipia County, Kenya and KwaZulu-Natal Province, South Africa)...
December 9, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27928865/canine-distemper-virus-in-the-serengeti-ecosystem-molecular-adaptation-to-different-carnivore-species
#8
Veljko M Nikolin, Ximena A Olarte-Castillo, Nikolaus Osterrieder, Heribert Hofer, Edward Dubovi, Camila J Mazzoni, Edgar Brunner, Katja V Goller, Robert D Fyumagwa, Patricia D Moehlman, Dagmar Thierer, Marion L East
Was the 1993/1994 fatal canine distemper virus (CDV) epidemic in lions and spotted hyaenas in the Serengeti ecosystem caused by the recent spillover of a virulent domestic dog strain or one well adapted to these noncanids? We examine this question using sequence data from 13 'Serengeti' strains including five complete genomes obtained between 1993 and 2011. Phylogenetic and haplotype network analyses reveal that strains from noncanids during the epidemic were more closely related to each other than to those from domestic or wild canids...
December 7, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27927792/genomic-analysis-reveals-hypoxia-adaptation-in-the-tibetan-mastiff-by-introgression-of-the-grey-wolf-from-the-tibetan-plateau
#9
EDITORIAL
Benpeng Miao, Zhen Wang, Yixue Li
The Tibetan Mastiff, a native of the Tibetan Plateau, has quickly adapted to the extreme highland environment. Recently, the impact of positive selection on the Tibetan Mastiff genome was studied and potential hypoxia-adaptive genes were identified. However, the origin of the adaptive variants remains unknown. In this study, we investigated the signature of genetic introgression in the adaptation of Tibetan Mastiffs with dog and wolf genomic data from different altitudes in close geographic proximity. On a genome-wide scale, the Tibetan Mastiff was much more closely related to other dogs than wolves...
December 6, 2016: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/27898670/gray-wolf-exposure-to-emerging-vector-borne-diseases-in-wisconsin-with-comparison-to-domestic-dogs-and-humans
#10
Rocio F Jara, Adrian P Wydeven, Michael D Samuel
World-wide concern over emerging vector-borne diseases has increased in recent years for both animal and human health. In the United Sates, concern about vector-borne diseases in canines has focused on Lyme disease, anaplasmosis, ehrlichiosis, and heartworm which infect domestic and wild canids. Of these diseases, Lyme and anaplasmosis are also frequently diagnosed in humans. Gray wolves (Canis lupus) recolonized Wisconsin in the 1970s, and we evaluated their temporal and geographic patterns of exposure to these four vector-borne diseases in Wisconsin as the population expanded between 1985 and 2011...
2016: PloS One
https://www.readbyqxmd.com/read/27891564/a-homozygous-pign-missense-mutation-in-soft-coated-wheaten-terriers-with-a-canine-paroxysmal-dyskinesia
#11
Ana L Kolicheski, Gary S Johnson, Tendai Mhlanga-Mutangadura, Jeremy F Taylor, Robert D Schnabel, Taroh Kinoshita, Yoshiko Murakami, Dennis P O'Brien
Hereditary paroxysmal dyskinesias (PxD) are a heterogeneous group of movement disorders classified by frequency, duration, and triggers of the episodes. A young-adult onset canine PxD has segregated as an autosomal recessive trait in Soft-Coated Wheaten Terriers. The medical records and videos of episodes from 25 affected dogs were reviewed. The episodes of hyperkinesia and dystonia lasted from several minutes to several hours and could occur as often as >10/day. They were not associated with strenuous exercise or fasting but were sometimes triggered by excitement...
January 2017: Neurogenetics
https://www.readbyqxmd.com/read/27887695/reprint-of-echinococcus-granulosus-sensu-stricto-s-s-from-the-critically-endangered-antelope-addax-nasomaculatus-in-tunisia
#12
Belgees Boufana, Yousra Saïd, Mokhtar Dhibi, Philip S Craig, Samia Lahmar
Echinococcus granulosus sensu lato (s.l.) is a zoonotic disease highly endemic in Tunisia. Canids including stray and semi-stray dogs, jackals and foxes are known as definitive hosts and a wide range of ungulates have been shown to harbour the metacestode hydatid stage and may serve as intermediate hosts. Fertile hydatid cysts of Echinococcus equinus and E. granulosus sensu stricto (s.s.) were recently molecularly identified for the first time from Tunisian donkeys. E. granulosus (s.s.) was also identified from wild boars in Tunisia...
January 2017: Acta Tropica
https://www.readbyqxmd.com/read/27887693/reprint-of-survey-and-first-molecular-characterization-of-echinococcus-granulosus-sensu-stricto-g1-in-pampas-fox-lycalopex-gymnocercus-in-buenos-aires-province-argentina
#13
Nathalia Paula Scioscia, Romina Sandra Petrigh, Pablo Martín Beldomenico, Martín Fugassa, Guillermo María Denegri
Echinococcosis is a zoonosis caused by tapeworms of the genus Echinococcus. Echinococcus granulosus sensu lato (s. l.) has a world-wide distribution and its transmission is primarily maintained in a synanthropic cycle with dogs as definitive hosts and livestock species as intermediate hosts. However, many wild canids also function as definitive hosts for E. granulosus s. l. Echinococcosis in humans is mainly caused by E. granulosus sensu stricto (s. s.) G1 genotype. In the present work, we expanded the epidemiological study on echinococcosis reported cases in Pampas fox (Lycalopex gymnocercus) to provide a prevalence estimate for rural areas of southern Buenos Aires province, Argentina...
January 2017: Acta Tropica
https://www.readbyqxmd.com/read/27843722/the-origin-of-the-lower-fourth-molar-in-canids-inferred-by-individual-variation
#14
Masakazu Asahara
BACKGROUND: An increase in tooth number is an exception during mammalian evolution. The acquisition of the lower fourth molar in the bat-eared fox (Otocyon megalotis, Canidae, Carnivora, Mammalia) is one example; however, its developmental origin is not clear. In some canids (Canidae), individual variation exist as supernumerary molar M4. This study focuses on the acquisition of the lower fourth molar in canids and proposes that the inhibitory cascade model can explain its origin. METHODS: Occlusal view projected area of lower molars was determined from 740 mandibles obtained from Canis latrans, Nyctereutes procyonoides, and Urocyon cinereoargenteus museum specimens...
2016: PeerJ
https://www.readbyqxmd.com/read/27832063/one-health-interactions-of-chagas-disease-vectors-canid-hosts-and-human-residents-along-the-texas-mexico-border
#15
Melissa N Garcia, Sarah O'Day, Susan Fisher-Hoch, Rodion Gorchakov, Ramiro Patino, Teresa P Feria Arroyo, Susan T Laing, Job E Lopez, Alexandra Ingber, Kathryn M Jones, Kristy O Murray
BACKGROUND: Chagas disease (Trypanosoma cruzi infection) is the leading cause of non-ischemic dilated cardiomyopathy in Latin America. Texas, particularly the southern region, has compounding factors that could contribute to T. cruzi transmission; however, epidemiologic studies are lacking. The aim of this study was to ascertain the prevalence of T. cruzi in three different mammalian species (coyotes, stray domestic dogs, and humans) and vectors (Triatoma species) to understand the burden of Chagas disease among sylvatic, peridomestic, and domestic cycles...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27811300/comparative-locomotor-costs-of-domestic-dogs-reveal-energetic-economy-of-wolf-like-breeds
#16
C M Bryce, T M Williams
The broad diversity in morphology and geographic distribution of the 35 free-ranging members of the family Canidae is only rivaled by that of the domesticated dog, Canis lupus familiaris. Considered to be among nature's most elite endurance athletes, both domestic and wild canids provide a unique opportunity to examine the variability in mammalian aerobic exercise performance and energy expenditure. To determine the potential effects of domestication and selective breeding on locomotor gait and economy in canids, we measured the kinematics and mass-specific metabolism of three large (>20 kg) dog breed groups (northern breeds, retrievers, and hounds) of varying morphological and genomic relatedness to their shared progenitor, the gray wolf...
November 3, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27805842/neospora-caninum-in-wild-waterfowl-occurrence-of-parasite-dna-and-low-antibody-titers
#17
Guido Rocchigiani, Alessandro Poli, Simona Nardoni, Papini Roberto, Francesca Mancianti
Thirty-five adult waterfowl (14 males and 21 females) representing various orders and species were sampled during the hunting season from 2015 to 2016. Antibodies to Neospora caninum were detected by IFAT on blood samples, while heart and brain were subjected to molecular analysis for the detection of Neospora caninum DNA. Twelve birds (34.3%) (6 Anas crecca, 3 Anas platyrhynchos, 2 Anas penelope, 1 Anas acuta) showed antibodies versus N. caninum, while 10 animals out of 35 (4 Anas crecca, 2 Anas platyrhynchos, 2 Anas penelope, 1 Anas acuta, and 1 Vanellus vanellus) scored positive for at least 1 sample, with an overall prevalence of 28...
November 2, 2016: Journal of Parasitology
https://www.readbyqxmd.com/read/27796367/serological-and-molecular-epidemiology-of-canine-adenovirus-type-1-in-red-foxes-vulpes-vulpes-in-the-united-kingdom
#18
David Walker, Seán A Fee, Gill Hartley, Jane Learmount, Maria J H O'Hagan, Anna L Meredith, Barend M de C Bronsvoort, Thibaud Porphyre, Colin P Sharp, Adrian W Philbey
Canine adenovirus type 1 (CAV-1) causes infectious canine hepatitis (ICH), a frequently fatal disease which primarily affects canids. In this study, serology (ELISA) and molecular techniques (PCR/qPCR) were utilised to investigate the exposure of free-ranging red foxes (Vulpes vulpes) to CAV-1 in the United Kingdom (UK) and to examine their role as a wildlife reservoir of infection for susceptible species. The role of canine adenovirus type 2 (CAV-2), primarily a respiratory pathogen, was also explored. In foxes with no evidence of ICH on post-mortem examination, 29 of 154 (18...
October 31, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27788289/brachial-plexus-in-the-pampas-fox-lycalopex-gymnocercus-a-descriptive-and-comparative-analysis
#19
Paulo de Souza Junior, Natan da Cruz de Carvalho, Karine de Mattos, Marcelo Abidu Figueiredo, André Luiz Quagliatto Santos
Twenty thoracic limbs of ten Lycalopex gymnocercus were dissected to describe origin and distribution of the nerves forming brachial plexuses. The brachial plexus resulted from the connections between the ventral branches of the last three cervical nerves (C6, C7 and C8) and first thoracic nerve (T1). These branches connected the suprascapular, subscapular, axillary, musculocutaneous, radial, median and ulnar nerves to the intrinsic musculature and connected the brachiocephalic, thoracodorsal, lateral thoracic, long thoracic, cranial pectoral and caudal pectoral nerves to the extrinsic musculature...
October 27, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27774854/detection-of-leishmania-l-infantum-in-stray-dogs-by-molecular-techniques-with-sensitive-species-specific-primers
#20
Rodrigo C Silva, Virgínia B Richini-Pereira, Mariana Kikuti, Pâmela M Marson, Helio Langoni
BACKGROUND: Canine visceral leishmaniasis (CVL) is a worldwide parasitic zoonosis caused by Leishmania (Leishmania) infantum around the world. Canids are the definitive hosts and sand flies the intermediate hosts. OBJECTIVE: To test the hypothesis that a new species-specific primers (Lch14:Lch15, targeting a multiple alignment for L. infantum kDNA minicircle) is an efficient diagnostic tool for L. infantum. METHODS: The presence of L. infantum DNA was assessed in blood samples of 69 stray dogs using the conventional PCR (cPCR) and quantitative PCR (qPCR)...
December 2017: Veterinary Quarterly
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