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https://www.readbyqxmd.com/read/28729263/complete-genomic-sequence-of-canine-distemper-virus-from-an-ethiopian-wolf
#1
Denise A Marston, Jemma Watson, Emma L Wise, Richard J Ellis, Eric Bedin, Girma Ayalew, Muktar Abute, Xavier de Lamballerie, Anthony R Fooks, Claudio Sillero-Zubiri, Ashley C Banyard
Canine distemper virus (CDV) has been implicated in population declines of wildlife, including many threatened species. Here we present the full genome of CDV from an Ethiopian wolf, Canis simensis, the world's rarest and most endangered canid.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28725102/the-influence-of-social-relationship-on-food-tolerance-in-wolves-and-dogs
#2
Rachel Dale, Friederike Range, Laura Stott, Kurt Kotrschal, Sarah Marshall-Pescini
ABSTRACT: Food sharing is relatively widespread across the animal kingdom, but research into the socio-ecological factors affecting this activity has predominantly focused on primates. These studies do suggest though that food tolerance is linked to the social relationship with potential partners. Therefore, the current study aimed to assess the social factors which influence food tolerance in two canids: wolves and dogs. We presented wolves and dogs with two paradigms: dyadic tolerance tests and group carcass feedings...
2017: Behavioral Ecology and Sociobiology
https://www.readbyqxmd.com/read/28687738/a-possible-origin-population-of-pathogenic-intestinal-nematodes-strongyloides-stercoralis-unveiled-by-molecular-phylogeny
#3
Eiji Nagayasu, Myo Pa Pa Thet Hnin Htwe Aung, Thanaporn Hortiwakul, Akina Hino, Teruhisa Tanaka, Miwa Higashiarakawa, Alex Olia, Tomoyo Taniguchi, Soe Moe Thu Win, Isao Ohashi, Emmanuel Igwaro Odongo-Aginya, Khin Myo Aye, Mon Mon, Kyu Kyu Win, Kei Ota, Yukari Torisu, Siripen Panthuwong, Eisaku Kimura, Nirianne M Q Palacpac, Taisei Kikuchi, Tetsuo Hirata, Shidow Torisu, Hajime Hisaeda, Toshihiro Horii, Jiro Fujita, Wah Win Htike, Haruhiko Maruyama
Humans and dogs are the two major hosts of Strongyloides stercoralis, an intestinal parasitic nematode. To better understand the phylogenetic relationships among S. stercoralis isolates infecting humans and dogs and to assess the zoonotic potential of this parasite, we analyzed mitochondrial Cox1, nuclear 18S rDNA, 28S rDNA, and a major sperm protein domain-containing protein genes. Overall, our analyses indicated the presence of two distinct lineages of S. stercoralis (referred to as type A and type B). While type A parasites were isolated both from humans and dogs in different countries, type B parasites were found exclusively in dogs, indicating that the type B has not adapted to infect humans...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28680689/rensching-cats-and-dogs-feeding-ecology-and-fecundity-trends-explain-variation-in-the-allometry-of-sexual-size-dimorphism
#4
P J Johnson, M J Noonan, A C Kitchener, L A Harrington, C Newman, D W Macdonald
The tendency for sexual size dimorphism (SSD) to increase with body mass in taxa where males are larger, and to decrease when females are larger, is known as Rensch's rule. In mammals, where the trend occurs, it is believed to be the result of a competitive advantage for larger males, while female mass is constrained by the energetics of reproduction. Here, we examine the allometry of SSD within the Felidae and Canidae, demonstrating distinctly different patterns: in felids, there is positive allometric scaling, while there is no trend in canids...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28680672/phylogenetic-evidence-for-the-ancient-himalayan-wolf-towards-a-clarification-of-its-taxonomic-status-based-on-genetic-sampling-from-western-nepal
#5
Geraldine Werhahn, Helen Senn, Jennifer Kaden, Jyoti Joshi, Susmita Bhattarai, Naresh Kusi, Claudio Sillero-Zubiri, David W Macdonald
Wolves in the Himalayan region form a monophyletic lineage distinct from the present-day Holarctic grey wolf Canis lupus spp. (Linnaeus 1758) found across Eurasia and North America. Here, we analyse phylogenetic relationships and the geographic distribution of mitochondrial DNA haplotypes of the contemporary Himalayan wolf (proposed in previous studies as Canis himalayensis) found in Central Asia. We combine genetic data from a living Himalayan wolf population collected in northwestern Nepal in this study with already published genetic data, and confirm the Himalayan wolf lineage based on mitochondrial genomic data (508 bp cytochrome b and 242 bp D-loop), and X- and Y-linked zinc-finger protein gene (ZFX and ZFY) sequences...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28674771/a-review-of-the-physiology-of-a-survival-expert-of-big-freeze-deep-snow-and-an-empty-stomach-the-boreal-raccoon-dog-nyctereutes-procyonoides
#6
REVIEW
Anne-Mari Mustonen, Petteri Nieminen
The raccoon dog (Nyctereutes procyonoides) is an invasive canid originating from eastern Asia. Here, we review its physiological adaptations to wintering, with an emphasis on northern Europe, where the raccoon dog spends the coldest part of the year in winter sleep. The timing of physiological changes related to wintering is connected to photoperiod by melatonin. In preparation to winter, raccoon dogs display autumnal hyperphagia and fattening probably regulated by the interaction of several peptide hormones...
July 4, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28662691/the-wolf-reference-genome-sequence-canis-lupus-lupus-and-its-implications-for-canis-spp-population-genomics
#7
Shyam Gopalakrishnan, Jose A Samaniego Castruita, Mikkel-Holger S Sinding, Lukas F K Kuderna, Jannikke Räikkönen, Bent Petersen, Thomas Sicheritz-Ponten, Greger Larson, Ludovic Orlando, Tomas Marques-Bonet, Anders J Hansen, Love Dalén, M Thomas P Gilbert
BACKGROUND: An increasing number of studies are addressing the evolutionary genomics of dog domestication, principally through resequencing dog, wolf and related canid genomes. There is, however, only one de novo assembled canid genome currently available against which to map such data - that of a boxer dog (Canis lupus familiaris). We generated the first de novo wolf genome (Canis lupus lupus) as an additional choice of reference, and explored what implications may arise when previously published dog and wolf resequencing data are remapped to this reference...
June 29, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28655291/naturally-acquired-canine-herpesvirus-associated-meningoencephalitis
#8
Mason C Jager, Erica A Sloma, Morgan Shelton, Andrew D Miller
Canid alphaherpesvirus 1 (CHV) causes morbidity and mortality in susceptible puppies. While the neuropathology of experimentally infected puppies has been detailed, characterization of naturally acquired infections is limited. The aim of this study was to describe the histologic, immunohistochemical, and in situ hybridization features of CHV encephalitis in the dog. Six female and 11 male puppies ranging in age from stillborn to 57 days old were included. Histologically, lesions included multifocal glial nodules (16/17, 94%), meningeal infiltrates (15/17, 88%), and cerebellar cortical necrosis (6/9, 67%); however, robust inflammation was not a significant feature in any of the cases...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28649326/viral-gut-metagenomics-of-sympatric-wild-and-domestic-canids-and-monitoring-of-viruses-insights-from-an-endangered-wolf-population
#9
Nádia Conceição-Neto, Raquel Godinho, Francisco Álvares, Claude K Yinda, Ward Deboutte, Mark Zeller, Lies Laenen, Elisabeth Heylen, Sara Roque, Francisco Petrucci-Fonseca, Nuno Santos, Marc Van Ranst, João R Mesquita, Jelle Matthijnssens
Animal host-microbe interactions are a relevant concern for wildlife conservation, particularly regarding generalist pathogens, where domestic host species can play a role in the transmission of infectious agents, such as viruses, to wild animals. Knowledge on viral circulation in wild host species is still scarce and can be improved by the recent advent of modern molecular approaches. We aimed to characterize the fecal virome and identify viruses of potential conservation relevance of diarrheic free-ranging wolves and sympatric domestic dogs from Central Portugal, where a small and threatened wolf population persists in a highly anthropogenically modified landscape...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28639466/genetic-characterization-of-sarcoptes-scabiei-from-black-bears-ursus-americanus-and-other-hosts-in-eastern-united-states
#10
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
#11
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
#12
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 15, 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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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