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https://www.readbyqxmd.com/read/28064464/ungulate-predation-and-ecological-roles-of-wolves-and-coyotes-in-eastern-north-america
#1
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
#2
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/28035275/mobility-of-moose-comparing-the-effects-of-wolf-predation-risk-reproductive-status-and-seasonality
#3
Camilla Wikenros, Gyöngyvér Balogh, Håkan Sand, Kerry L Nicholson, Johan Månsson
In a predator-prey system, prey species may adapt to the presence of predators with behavioral changes such as increased vigilance, shifting habitats, or changes in their mobility. In North America, moose (Alces alces) have shown behavioral adaptations to presence of predators, but such antipredator behavioral responses have not yet been found in Scandinavian moose in response to the recolonization of wolves (Canis lupus). We studied travel speed and direction of movement of GPS-collared female moose (n = 26) in relation to spatiotemporal differences in wolf predation risk, reproductive status, and time of year...
December 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28032106/canine-visceral-leishmaniasis-in-wild-canines-fox-jackal-and-wolf-in-northeastern-iran-using-parasitological-serological-and-molecular-methods
#4
Mehdi Mohebali, Kourosh Arzamani, Zabiholah Zarei, Behnaz Akhoundi, Homa Hajjaran, Saber Raeghi, Zahra Heidari, Seyed Mousa Motavalli-Haghi, Samira Elikaee, Ahmad Mousazadeh-Mojarrad, Zahra Kakoei
BACKGROUND: Although many studies had been conducted on various aspects of canine visceral leishmaniasis (CVL) in domestic dogs in the endemic areas of Iran, investigations on CVL in wild canines are rare. METHODS: This is a cross-sectional study was conducted from December 2012 to 2013 in northeast of Iran where human VL is endemic. Wild canines were trapped around the areas where human VL cases had been previously identified. Wild canines were collected and examined both clinically and serologically using direct agglutination test (DAT)...
December 2016: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/28030549/prey-selection-of-scandinavian-wolves-single-large-or-several-small
#5
Håkan Sand, Ann Eklund, Barbara Zimmermann, Camilla Wikenros, Petter Wabakken
Research on large predator-prey interactions are often limited to the predators' primary prey, with the potential for prey switching in systems with multiple ungulate species rarely investigated. We evaluated wolf (Canis lupus) prey selection at two different spatial scales, i.e., inter- and intra-territorial, using data from 409 ungulate wolf-kills in an expanding wolf population in Scandinavia. This expansion includes a change from a one-prey into a two-prey system with variable densities of one large-sized ungulate; moose (Alces alces) and one small-sized ungulate; roe deer (Capreolus capreolus)...
2016: PloS One
https://www.readbyqxmd.com/read/28002495/space-use-and-habitat-selection-by-resident-and-transient-red-wolves-canis-rufus
#6
Joseph W Hinton, Christine Proctor, Marcella J Kelly, Frank T van Manen, Michael R Vaughan, Michael J Chamberlain
Recovery of large carnivores remains a challenge because complex spatial dynamics that facilitate population persistence are poorly understood. In particular, recovery of the critically endangered red wolf (Canis rufus) has been challenging because of its vulnerability to extinction via human-caused mortality and hybridization with coyotes (Canis latrans). Therefore, understanding red wolf space use and habitat selection is important to assist recovery because key aspects of wolf ecology such as interspecific competition, foraging, and habitat selection are well-known to influence population dynamics and persistence...
2016: PloS One
https://www.readbyqxmd.com/read/28002475/trans-boundary-edge-effects-in-the-western-carpathians-the-influence-of-hunting-on-large-carnivore-occupancy
#7
Miroslav Kutal, Martin Váňa, Josef Suchomel, Guillaume Chapron, José Vicente López-Bao
The conservation and management of wolves Canis lupus in the periphery of their distribution is challenging. Edges of wolf distribution are characterized by very few and intermittent occurrences of individuals, which are modulated by multiple factors affecting the overall population such as human-caused mortality, management targets and food availability. The knowledge of population dynamics in the edges becomes crucial when hunting takes place nearby the edges, which may preclude population expansion. Here, using as example the occurrence of wolves in the Beskydy Mountains (Czech-Slovak border), which are the edge distribution of the wolf and Eurasian lynx Lynx lynx populations in the West Carpathians, we explored how food availability and hunting in the Slovakian core area affected the dynamics of wolves in the edges of this population...
2016: PloS One
https://www.readbyqxmd.com/read/27994129/the-bald-and-the-beautiful-hairlessness-in-domestic-dog-breeds
#8
Heidi G Parker, Alexander Harris, Dayna L Dreger, Brian W Davis, Elaine A Ostrander
An extraordinary amount of genomic variation is contained within the chromosomes of domestic dogs, manifesting as dramatic differences in morphology, behaviour and disease susceptibility. Morphology, in particular, has been a topic of enormous interest as biologists struggle to understand the small window of dog domestication from wolves, and the division of dogs into pure breeding, closed populations termed breeds. Many traits related to morphology, including body size, leg length and skull shape, have been under selection as part of the standard descriptions for the nearly 400 breeds recognized worldwide...
February 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27992441/where-and-how-wolves-canis-lupus-kill-beavers-castor-canadensis
#9
Thomas D Gable, Steve K Windels, John G Bruggink, Austin T Homkes
Beavers (Castor canadensis) can be a significant prey item for wolves (Canis lupus) in boreal ecosystems due to their abundance and vulnerability on land. How wolves hunt beavers in these systems is largely unknown, however, because observing predation is challenging. We inferred how wolves hunt beavers by identifying kill sites using clusters of locations from GPS-collared wolves in Voyageurs National Park, Minnesota. We identified 22 sites where wolves from 4 different packs killed beavers. We classified these kill sites into 8 categories based on the beaver-habitat type near which each kill occurred...
2016: PloS One
https://www.readbyqxmd.com/read/27989812/lethal-distemper-in-badgers-meles-meles-following-epidemic-in-dogs-and-wolves-evidence-for-viral-adaptation-in-the-wildlife-milieu
#10
Daria Di Sabatino, Gabriella Di Francesco, Guendalina Zaccaria, Daniela Malatesta, Luca Brugnola, Maurilia Marcacci, Ottavio Portanti, Fabrizio De Massis, Giovanni Savini, Liana Teodori, Enzo Ruggieri, Iolanda Mangone, Pietro Badagliacca, Alessio Lorusso
Canine distemper virus (CDV) represents an important conservation threat to many wild carnivores. A large distemper epidemic sustained by an Arctic-lineage strain occurred in Italy in 2013, mainly in the Abruzzi region, causing overt disease in domestic and shepherd dogs, Apennine wolves (Canis lupus) and other wild carnivores. Two badgers were collected by the end of September 2015 in a rural area of the Abruzzi region and were demonstrated to be CDV-positive by real time RT-PCR and IHC in several tissues...
October 27, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27976422/desert-pastoralists-negative-and-positive-effects-on-rare-wildlife-in-the-gobi
#11
REVIEW
L Stefan Ekernas, Wesley M Sarmento, Hannah S Davie, Richard P Reading, James Murdoch, Ganchimeg J Wingard, Sukh Amgalanbaatar, Joel Berger
In arid regions of the developing world, pastoralists and livestock commonly inhabit protected areas, resulting in human-wildlife conflict. Conflict is inextricably linked to the ecological processes shaping relationships between pastoralists and native herbivores and carnivores. To elucidate relationships underpinning human-wildlife conflict, we synthesized 15 years of ecological and ethnographic data from Ikh Nart Nature Reserve in Mongolia's Gobi steppe. The density of argali (Ovis ammon), the world's largest wild sheep, at Ikh Nart was among the highest in Mongolia, yet livestock were >90% of ungulate biomass and dogs >90% of large-carnivore biomass...
December 15, 2016: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/27974861/a-comparison-between-wolves-canis-lupus-and-dogs-canis-familiaris-in-showing-behaviour-towards-humans
#12
Marianne T E Heberlein, Dennis C Turner, Friederike Range, Zsófia Virányi
Both human and nonhuman primates use imperative pointing to request a desired object from another individual. Gaze alternation often accompanies such pointing gestures, and in species that have no hands this can in itself function as imperative pointing. Dogs have exceptional skills in communicating with humans. The early development of these skills is suggested to have been facilitated by domestication. Adult wolves socialized with humans can use human-provided information to find food in various situations, but it is unclear whether they would use gaze alternation to show their human partner a target location they cannot reach on their own...
December 2016: Animal Behaviour
https://www.readbyqxmd.com/read/27940471/genomic-variation-of-inbreeding-and-ancestry-in-the-remaining-two-isle-royale-wolves
#13
Philip W Hedrick, Marty Kardos, Rolf O Peterson, John A Vucetich
Inbreeding, relatedness, and ancestry have traditionally been estimated with pedigree information, however, molecular genomic data can provide more detailed examination of these properties. For example, pedigree information provides estimation of the expected value of these measures but molecular genomic data can estimate the realized values of these measures in individuals. Here, we generate the theoretical distribution of inbreeding, relatedness, and ancestry for the individuals in the pedigree of the Isle Royale wolves, the first examination of such variation in a wild population with a known pedigree...
December 11, 2016: Journal of Heredity
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
#14
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/27912242/deciphering-the-origin-of-dogs-from-fossils-to-genomes
#15
Adam H Freedman, Robert K Wayne
Understanding the timing and geographic context of dog origins is a crucial component for understanding human history, as well as the evolutionary context in which the morphological and behavioral divergence of dogs from wolves occurred. A substantial challenge to understanding domestication is that dogs have experienced a complicated demographic history. An initial severe bottleneck was associated with domestication followed by postdivergence gene flow between dogs and wolves, as well as population expansions, contractions, and replacements...
November 28, 2016: Annual Review of Animal Biosciences
https://www.readbyqxmd.com/read/27904806/dominance-relationships-in-a-family-pack-of-captive-arctic-wolves-canis-lupus-arctos-the-influence-of-competition-for-food-age-and-sex
#16
Simona Cafazzo, Martina Lazzaroni, Sarah Marshall-Pescini
BACKGROUND: Dominance is one of the most pervasive concepts in the study of wolf social behaviour but recently its validity has been questioned. For some authors, the bonds between members of wolf families are better described as parent-offspring relationships and the concept of dominance should be used just to evaluate the social dynamics of non-familial captive pack members (e.g., Mech & Cluff, 2010). However, there is a dearth of studies investigating dominance relationships and its correlates in wolf family packs...
2016: PeerJ
https://www.readbyqxmd.com/read/27898670/gray-wolf-exposure-to-emerging-vector-borne-diseases-in-wisconsin-with-comparison-to-domestic-dogs-and-humans
#17
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/27876612/lethal-distemper-in-badgers-meles-meles-following-epidemic-in-dogs-and-wolves
#18
Daria Di Sabatino, Gabriella Di Francesco, Guendalina Zaccaria, Daniela Malatesta, Luca Brugnola, Maurilia Marcacci, Ottavio Portanti, Fabrizio De Massis, Giovanni Savini, Liana Teodori, Enzo Ruggieri, Iolanda Mangone, Pietro Badagliacca, Alessio Lorusso
Canine distemper virus (CDV) represents an important conservation threat to many wild carnivores. A large distemper epidemic sustained by an Arctic-lineage strain occurred in Italy in 2013, mainly in the Abruzzi region, causing overt disease in domestic and shepherd dogs, Apennine wolves (Canis lupus) and other wild carnivores. Two badgers were collected by the end of September 2015 in a rural area of the Abruzzi region and were demonstrated to be CDV-positive by real time RT-PCR and IHC in several tissues...
December 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27859195/energetic-costs-of-mange-in-wolves-estimated-from-infrared-thermography
#19
P C Cross, E S Almberg, C G Haase, P J Hudson, S K Maloney, M C Metz, A J Munn, P Nugent, O Putzeys, D R Stahler, A C Stewart, D W Smith
Parasites, by definition, extract energy from their hosts and thus affect trophic and food web dynamics even when the parasite may have limited effects on host population size. We studied the energetic costs of mange (Sarcoptes scabiei) in wolves (Canis lupus) using thermal cameras to estimate heat losses associated with compromised insulation during the winter. We combined the field data of known, naturally infected wolves with a data set on captive wolves with shaved patches of fur as a positive control to simulate mange-induced hair loss...
August 2016: Ecology
https://www.readbyqxmd.com/read/27811300/comparative-locomotor-costs-of-domestic-dogs-reveal-energetic-economy-of-wolf-like-breeds
#20
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
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