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https://www.readbyqxmd.com/read/28717592/epas1-variants-in-high-altitude-tibetan-wolves-were-selectively-introgressed-into-highland-dogs
#1
Bridgett vonHoldt, Zhenxin Fan, Diego Ortega-Del Vecchyo, Robert K Wayne
BACKGROUND: Admixture can facilitate adaptation. For example, black wolves have obtained the variant causing black coat color through past hybridization with domestic dogs and have higher fitness than gray colored wolves. Another recent example of the transfer of adaptive variation between the two species has been suggested by the similarity between high altitude Tibetan mastiffs and wolves at the EPAS1 gene, a transcription factor induced in low oxygen environments. METHODS: Here, we investigate the directionality of admixture in EPAS1 between 28 reference highland gray wolves, 15 reference domestic dogs, and 21 putatively admixed highland wolves...
2017: PeerJ
https://www.readbyqxmd.com/read/28715475/free-ranging-dogs-show-age-related-plasticity-in-their-ability-to-follow-human-pointing
#2
Debottam Bhattacharjee, Nikhil Dev N, Shreya Gupta, Shubhra Sau, Rohan Sarkar, Arpita Biswas, Arunita Banerjee, Daisy Babu, Diksha Mehta, Anindita Bhadra
Differences in pet dogs' and captive wolves' ability to follow human communicative intents have led to the proposition of several hypotheses regarding the possession and development of social cognitive skills in dogs. It is possible that the social cognitive abilities of pet dogs are induced by indirect conditioning through living with humans, and studying free-ranging dogs can provide deeper insights into differentiating between innate abilities and conditioning in dogs. Free-ranging dogs are mostly scavengers, indirectly depending on humans for their sustenance...
2017: PloS One
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
#3
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/28680658/differences-in-greeting-behaviour-towards-humans-with-varying-levels-of-familiarity-in-hand-reared-wolves-canis-lupus
#4
Dorottya Júlia Ujfalussy, Anita Kurys, Enikő Kubinyi, Márta Gácsi, Zsófia Virányi
Socialized wolves' relationship with humans is a much debated, but important question in light of dog domestication. Earlier findings reported no attachment to the caretaker at four months of age in a Strange Situation Test, while recently attachment to the caretaker was reported at a few weeks of age in a similar paradigm. To explore wolf-human relationship, we analysed behaviours of hand reared, extensively socialized wolves towards four visitor types: foster-parents, close acquaintances, persons met once before, and complete strangers during a greeting episode...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28665979/risk-map-for-wolf-threats-to-livestock-still-predictive-5-years-after-construction
#5
Adrian Treves, Mark F Rabenhorst
Risk maps are spatial models of environmental hazards such as predation on livestock. We tested the long-term validity of a published risk map built from locations where Wisconsin wolves attacked livestock from 1999-2006. Using data collected after model construction, we verified the predictive accuracy of the risk map exceeded 91% for the period 2007-2011. Predictive power lasting 5 years or more substantiates the claim that risk maps are both valid and verified tools for anticipating spatial hazards. Classification errors coincided with verifier uncertainty about which wolves might be responsible...
2017: PloS One
https://www.readbyqxmd.com/read/28662691/the-wolf-reference-genome-sequence-canis-lupus-lupus-and-its-implications-for-canis-spp-population-genomics
#6
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/28659577/elitist-binary-wolf-search-algorithm-for-heuristic-feature-selection-in-high-dimensional-bioinformatics-datasets
#7
Jinyan Li, Simon Fong, Raymond K Wong, Richard Millham, Kelvin K L Wong
Due to the high-dimensional characteristics of dataset, we propose a new method based on the Wolf Search Algorithm (WSA) for optimising the feature selection problem. The proposed approach uses the natural strategy established by Charles Darwin; that is, 'It is not the strongest of the species that survives, but the most adaptable'. This means that in the evolution of a swarm, the elitists are motivated to quickly obtain more and better resources. The memory function helps the proposed method to avoid repeat searches for the worst position in order to enhance the effectiveness of the search, while the binary strategy simplifies the feature selection problem into a similar problem of function optimisation...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28657857/genetic-characterization-of-canine-parvovirus-in-sympatric-free-ranging-wild-carnivores-in-portugal
#8
Carla Miranda, Nuno Santos, Colin Parrish, Gertrude Thompson
Since its emergence in the 1970s, canine parvovirus (CPV) has been reported in domestic and nondomestic carnivores worldwide with severe implications on their health and survival. Here, we aim to better understand CPV circulation in multihost-pathogens systems by characterizing CPV DNA or viruses in 227 free-ranging wild carnivores of 12 species from Portugal. Collected samples during 1995-2011 were analyzed by PCR and sequence analysis. The canine parvovirus DNA was detected in 4 (2%) animals of two species, namely in wolves (Canis lupus; 3/63, 5%, 95% confidence interval=1...
June 28, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28649351/new-insights-into-the-genetic-composition-and-phylogenetic-relationship-of-wolves-and-dogs-in-the-iberian-peninsula
#9
Ana Elisabete Pires, Isabel R Amorim, Carla Borges, Fernanda Simões, Tatiana Teixeira, Andreia Quaresma, Francisco Petrucci-Fonseca, José Matos
This study investigates the gene pool of Portuguese autochthonous dog breeds and their wild counterpart, the Iberian wolf subspecies (Canis lupus signatus), using standard molecular markers. A combination of paternal and maternal molecular markers was used to investigate the genetic composition, genetic differentiation and genetic relationship of native Portuguese dogs and the Iberian wolf. A total of 196 unrelated dogs, including breed and village dogs from Portugal, and other dogs from Spain and North Africa, and 56 Iberian wolves (wild and captive) were analyzed for nuclear markers, namely Y chromosome SNPs, Y chromosome STR loci, autosomal STR loci, and a mitochondrial fragment of the control region I...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28649339/conservation-of-wildlife-populations-factoring-in-incremental-disturbance
#10
Abbie Stewart, Petr E Komers
Progressive anthropogenic disturbance can alter ecosystem organization potentially causing shifts from one stable state to another. This potential for ecosystem shifts must be considered when establishing targets and objectives for conservation. We ask whether a predator-prey system response to incremental anthropogenic disturbance might shift along a disturbance gradient and, if it does, whether any disturbance thresholds are evident for this system. Development of linear corridors in forested areas increases wolf predation effectiveness, while high density of development provides a safe-haven for their prey...
June 2017: Ecology and Evolution
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
#11
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/28630899/comment-on-whole-genome-sequence-analysis-shows-two-endemic-species-of-north-american-wolf-are-admixtures-of-the-coyote-and-gray-wolf
#12
Paul A Hohenlohe, Linda Y Rutledge, Lisette P Waits, Kimberly R Andrews, Jennifer R Adams, Joseph W Hinton, Ronald M Nowak, Brent R Patterson, Adrian P Wydeven, Paul A Wilson, Brad N White
Whole-genome data do not support a recent hybrid origin for red and eastern wolves.
June 2017: Science Advances
https://www.readbyqxmd.com/read/28602652/domestication-does-not-explain-the-presence-of-inequity-aversion-in-dogs
#13
Jennifer L Essler, Sarah Marshall-Pescini, Friederike Range
Sensitivity to inequity is thought to be an important mechanism for recognizing undesirable cooperative partners and thus crucial for the evolution of human cooperation [1]. This link may not be unique to humans, as cooperative non-human primates also react to unequal outcomes [2], whereas non-cooperative species do not [3]. Although this hypothesis has not been tested in non-primate species, studies revealed that pet dogs show a limited form of inequity aversion, responding to reward, but not quality inequity [4-6]...
June 19, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28585433/reconsidering-the-distribution-of-gray-wolves
#14
Greger Larson
No abstract text is available yet for this article.
May 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28555834/effects-of-breeder-turnover-and-harvest-on-group-composition-and-recruitment-in-a-social-carnivore
#15
David E Ausband, Michael S Mitchell, Lisette P Waits
1.Breeder turnover can influence population growth in social carnivores through changes to group size, composition, and recruitment. 2.Studies that possess detailed group composition data that can provide insights about the effects of breeder turnover on groups have generally been conducted on species that are not subject to recurrent annual human harvest. We wanted to know how breeder turnover affects group composition and how harvest, in turn, affects breeder turnover in cooperatively breeding gray wolves (Canis lupus Linnaeus 1758)...
May 27, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28549194/disentangling-timing-of-admixture-patterns-of-introgression-and-phenotypic-indicators-in-a-hybridizing-wolf-population
#16
M Galaverni, R Caniglia, L Pagani, E Fabbri, A Boattini, E Randi
Hybridization is a natural or anthropogenic process that can deeply affect the genetic make-up of populations, possibly decreasing individual fitness but sometimes favouring local adaptations. The population of Italian wolves (Canis lupus), after protracted demographic declines and isolation, is currently expanding in anthropic areas, with documented cases of hybridization with stray domestic dogs. However, identifying admixture patterns in deeply introgressed populations is far from trivial. In this study, we used a panel of 170,000 SNPs analysed with multivariate, Bayesian and local ancestry reconstruction methods to identify hybrids, estimate their ancestry proportions and timing since admixture...
May 26, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28539521/harvest-and-group-effects-on-pup-survival-in-a-cooperative-breeder
#17
David E Ausband, Michael S Mitchell, Carisa R Stansbury, Jennifer L Stenglein, Lisette P Waits
Recruitment in cooperative breeders can be negatively affected by changes in group size and composition. The majority of cooperative breeding studies have not evaluated human harvest; therefore, the effects of recurring annual harvest and group characteristics on survival of young are poorly understood. We evaluated how harvest and groups affect pup survival using genetic sampling and pedigrees for grey wolves in North America. We hypothesized that harvest reduces pup survival because of (i) reduced group size, (ii) increased breeder turnover and/or (iii) reduced number of female helpers...
May 31, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28539204/nurses-perceptions-of-caring-for-parents-of-children-with-chronic-medical-complexity-in-the-pediatric-intensive-care-unit
#18
Gabrielle Denis-Larocque, Karl Williams, Isabelle St-Sauveur, Margaret Ruddy, Janet Rennick
OBJECTIVES: The aim of this study was to explore nurses' perceptions of caring for parents of children with medical complexity [CMC] in the pediatric intensive care unit [PICU]. RESEARCH METHODOLOGY: An interpretive descriptive design was used to explore nurses' perceptions of caring for parents of CMC in the PICU. Semi-structured interviews were conducted with ten nurses. Interview data were collected and analyzed using qualitative inductive content analysis. FINDINGS: Nurses revealed that their experiences of caring for parents of CMC evolved over time as they learned to tailor a caregiving partnership based on trust...
May 20, 2017: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
https://www.readbyqxmd.com/read/28489863/combining-phylogenetic-and-demographic-inferences-to-assess-the-origin-of-the-genetic-diversity-in-an-isolated-wolf-population
#19
Luca Montana, Romolo Caniglia, Marco Galaverni, Elena Fabbri, Atidje Ahmed, Barbora Černá Bolfíková, Sylwia D Czarnomska, Ana Galov, Raquel Godinho, Maris Hindrikson, Pavel Hulva, Bogumiła Jędrzejewska, Maja Jelenčič, Miroslav Kutal, Urmas Saarma, Tomaž Skrbinšek, Ettore Randi
The survival of isolated small populations is threatened by both demographic and genetic factors. Large carnivores declined for centuries in most of Europe due to habitat changes, overhunting of their natural prey and direct persecution. However, the current rewilding trends are driving many carnivore populations to expand again, possibly reverting the erosion of their genetic diversity. In this study we reassessed the extent and origin of the genetic variation of the Italian wolf population, which is expanding after centuries of decline and isolation...
2017: PloS One
https://www.readbyqxmd.com/read/28478814/fragrance-compounds-the-wolves-in-sheep-s-clothings
#20
Seema Patel
In the past few decades, synthetic fragrance compounds have become ubiquitous components of personal care and household cleaning products. Overwhelming consumerism trends have led to the excess usage of these chemicals. It has been observed that this fragrance-laden unhealthy lifestyle runs parallel with the unprecedented rates of diabetes, cancer, neural ailments, teratogenicity, and transgender instances. The link between fragrances as and the multiplicity of pathogens remained latent for decades. However, now this health hazard and its role in homeostasis breakdown is getting attention...
May 2017: Medical Hypotheses
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