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https://www.readbyqxmd.com/read/29780408/an-intelligent-grey-wolf-optimizer-algorithm-for-distributed-compressed-sensing
#1
Haiqiang Liu, Gang Hua, Hongsheng Yin, Yonggang Xu
Distributed Compressed Sensing (DCS) is an important research area of compressed sensing (CS). This paper aims at solving the Distributed Compressed Sensing (DCS) problem based on mixed support model. In solving this problem, the previous proposed greedy pursuit algorithms easily fall into suboptimal solutions. In this paper, an intelligent grey wolf optimizer (GWO) algorithm called DCS-GWO is proposed by combining GWO and q -thresholding algorithm. In DCS-GWO, the grey wolves' positions are initialized by using the q -thresholding algorithm and updated by using the idea of GWO...
2018: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/29777963/red-wolf-canis-rufus-sperm-quality-and-quantity-is-affected-by-semen-collection-method-extender-components-and-post-thaw-holding-temperature
#2
Ashley D Franklin, William T Waddell, Karen L Goodrowe
Cryopreserving genetic resources is becoming increasingly important for species management. In the zoo-based red wolf (Canis rufus) population, inbreeding continues to increase in the absence of new founders. Through banking sperm, we preserve genetic diversity and create the ability to decrease inbreeding accumulation in the future. The quality and quantity of banked sperm can be affected by cryopreservation media and semen collection methods. This study's objectives were to further optimize semen extender used for red wolf sperm cryopreservation, investigate effects of post-thaw holding temperature, and to determine if urethral catheterization is an effective method for semen collection in this species...
May 16, 2018: Theriogenology
https://www.readbyqxmd.com/read/29773132/leishmania-in-wolves-in-northern-spain-a-spreading-zoonosis-evidenced-by-wildlife-sanitary-surveillance
#3
Alvaro Oleaga, Stefania Zanet, Alberto Espí, Marcia Raquel Pegoraro de Macedo, Christian Gortázar, Ezio Ferroglio
Leishmaniosis is, to date, considered the second most important emerging vector-borne protozoal disease in the world after malaria. The form of zoonotic visceral leishmaniosis found in the Mediterranean basin is caused by Leishmania infantum, and its life cycle includes the domestic dog and a phlebotomine sandfly vector. This complex epidemiological cycle and its high prevalence of subclinical infection, hinder the surveillance and control of L. infantum, and allows it to go unnoticed at the geographical endemicity limits of the parasite or in recently colonized areas...
May 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29771960/the-great-indian-joint-families-of-free-ranging-dogs
#4
Manabi Paul, Anindita Bhadra
Cooperative breeding is an excellent example of cooperation in social groups. Domestic dogs have evolved from cooperatively hunting and breeding ancestors but have adapted to a facultatively social scavenging lifestyle on streets, and solitary living in human homes. Pets typically breed and reproduce under human supervision, but free-ranging dogs can provide insights into the natural breeding ecology of dogs. We conducted a five year-long field based behavioural study on parental care of free-ranging dogs in India...
2018: PloS One
https://www.readbyqxmd.com/read/29766489/phenotypic-disparity-of-the-elbow-joint-in-domestic-dogs-and-wild-carnivores
#5
Borja Figueirido
In this article, I use geometric morphometrics in 2D from a sample of 366 elbow joints to quantify phenotypic disparity in domestic dog breeds, in wild canids, and across the order Carnivora. The elbow joint is a well-established morphological indicator of forearm motion and, by extension, of functional adaptations towards locomotor or predatory behavior in living carnivores. The study of the elbow joint in domestic dogs allows the exploration of potential convergences between (i) pursuit predators and fast-running dogs, and (ii) ambush predators and fighting breeds...
May 16, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29757430/genome-wide-analysis-of-snps-is-consistent-with-no-domestic-dog-ancestry-in-the-endangered-mexican-wolf-canis-lupus-baileyi
#6
Robert R Fitak, Sarah E Rinkevich, Melanie Culver
The Mexican gray wolf (Canis lupus baileyi) was historically distributed throughout the southwestern United States and northern Mexico. Extensive predator removal campaigns during the early 20th century, however, resulted in its eventual extirpation by the mid 1980s. At this time, the Mexican wolf existed only in 3 separate captive lineages (McBride, Ghost Ranch, and Aragón) descended from 3, 2, and 2 founders, respectively. These lineages were merged in 1995 to increase the available genetic variation, and Mexican wolves were reintroduced into Arizona and New Mexico in 1998...
May 11, 2018: Journal of Heredity
https://www.readbyqxmd.com/read/29747566/analysis-of-the-canid-y-chromosome-phylogeny-using-short-read-sequencing-data-reveals-the-presence-of-distinct-haplogroups-among-neolithic-european-dogs
#7
Matthew T Oetjens, Axel Martin, Krishna R Veeramah, Jeffrey M Kidd
BACKGROUND: Most genetic analyses of ancient and modern dogs have focused on variation in the autosomes or on the mitochondria. Mitochondrial DNA is more easily obtained from ancient samples than nuclear DNA and mitochondrial analyses have revealed important insights into the evolutionary history of canids. Utilizing a recently published dog Y-chromosome reference, we analyzed Y-chromosome sequence across a diverse collection of canids and determined the Y haplogroup of three ancient European dogs...
May 10, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29738721/are-the-ghosts-of-nature-s-past-haunting-ecology-today
#8
Brian R Silliman, Brent B Hughes, Lindsay C Gaskins, Qiang He, M Tim Tinker, Andrew Read, James Nifong, Rick Stepp
Humans have decimated populations of large-bodied consumers and their functions in most of the world's ecosystems. It is less clear how human activities have affected the diversity of habitats these consumers occupy. Rebounding populations of some predators after conservation provides an opportunity to begin to investigate this question. Recent research shows that following long-term protection, sea otters along the northeast Pacific coast have expanded into estuarine marshes and seagrasses, and alligators on the southeast US coast have expanded into saltwater ecosystems, habitats presently thought beyond their niche space...
May 7, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29729722/dental-and-temporomandibular-joint-pathology-of-the-grey-wolf-canis-lupus
#9
S Döring, B Arzi, J N Winer, P H Kass, F J M Verstraete
Skulls from 392 grey wolves (Canis lupus) were examined macroscopically according to predefined criteria. Two hundred and seven skulls were included in this study, comprised of 124 young adults (59.9%) and 83 adults (40.1%); of these, 65 (31.4%) specimens were from male wolves and 104 (50.3%) were from females, with 38 (18.4%) of unknown sex. Out of 8,694 possible teeth, 8,339 (95.9%) were present for evaluation. Fifty-five teeth (15.5%) were absent congenitally, 30 (8.5%) were lost during life and 270 (76...
April 2018: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/29721269/size-assortative-choice-and-mate-availability-influences-hybridization-between-red-wolves-canis-rufus-and-coyotes-canis-latrans
#10
Joseph W Hinton, John L Gittleman, Frank T van Manen, Michael J Chamberlain
Anthropogenic hybridization of historically isolated taxa has become a primary conservation challenge for many imperiled species. Indeed, hybridization between red wolves ( Canis rufus ) and coyotes ( Canis latrans ) poses a significant challenge to red wolf recovery. We considered seven hypotheses to assess factors influencing hybridization between red wolves and coyotes via pair-bonding between the two species. Because long-term monogamy and defense of all-purpose territories are core characteristics of both species, mate choice has long-term consequences...
April 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29702651/can-only-poorer-european-countries-afford-large-carnivores
#11
Ilpo Kojola, Ville Hallikainen, Timo Helle, Jon E Swenson
BACKGROUND: One of the classic approaches in environmental economics is the environmental Kuznets curve, which predicts that when a national economy grows from low to medium levels, threats to biodiversity conservation increase, but they decrease when the economy moves from medium to high. We evaluated this approach by examining how population densities of the brown bear (Ursus arctos), gray wolf (Canis lupus), and Eurasian lynx (Lynx lynx) were related to the national economy in 24 European countries...
2018: PloS One
https://www.readbyqxmd.com/read/29696393/gastrointestinal-helminths-of-gray-wolves-canis-lupus-lupus-from-sweden
#12
Mohammad Nafi Solaiman Al-Sabi, Linnea Rääf, Eva Osterman-Lind, Henrik Uhlhorn, Christian Moliin Outzen Kapel
As the Scandinavian wolf population is limited in size, it is only rarely subject to systematic studies on its disease biology, especially gastrointestinal parasites. Therefore, this study aims to describe the prevalence of gastrointestinal helminths of gray wolves hunted on a limited license as a part of a wildlife management program. Helminths of 20 wolves were examined post mortem by macroscopy and coprology. Intestinal worms of five species were recovered from 18 wolves (90%): Uncinaria stenocephala (90%), Taenia spp...
April 25, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29688543/natural-selection-and-origin-of-a-melanistic-allele-in-north-american-gray-wolves
#13
Rena M Schweizer, Arun Durvasula, Joel Smith, Samuel H Vohr, Daniel R Stahler, Marco Galaverni, Olaf Thalmann, Douglas W Smith, Ettore Randi, Elaine A Ostrander, Richard E Green, Kirk E Lohmueller, John Novembre, Robert K Wayne
Pigmentation is often used to understand how natural selection affects genetic variation in wild populations since it can have a simple genetic basis, and can affect a variety of fitness-related traits (e.g., camouflage, thermoregulation, and sexual display). In gray wolves, the K locus, a β-defensin gene, causes black coat color via a dominantly inherited KB allele. The allele is derived from dog-wolf hybridization and is at high frequency in North American wolf populations. We designed a DNA capture array to probe the geographic origin, age, and number of introgression events of the KB allele in a panel of 331 wolves and 20 dogs...
May 1, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29681989/acoustic-localization-at-large-scales-a-promising-method-for-grey-wolf-monitoring
#14
Morgane Papin, Julian Pichenot, François Guérold, Estelle Germain
Background: The grey wolf ( Canis lupus ) is naturally recolonizing its former habitats in Europe where it was extirpated during the previous two centuries. The management of this protected species is often controversial and its monitoring is a challenge for conservation purposes. However, this elusive carnivore can disperse over long distances in various natural contexts, making its monitoring difficult. Moreover, methods used for collecting signs of presence are usually time-consuming and/or costly...
2018: Frontiers in Zoology
https://www.readbyqxmd.com/read/29659615/natural-regeneration-on-seismic-lines-influences-movement-behaviour-of-wolves-and-grizzly-bears
#15
Laura Finnegan, Karine E Pigeon, Jerome Cranston, Mark Hebblewhite, Marco Musiani, Lalenia Neufeld, Fiona Schmiegelow, Julie Duval, Gordon B Stenhouse
Across the boreal forest of Canada, habitat disturbance is the ultimate cause of caribou (Rangifer tarandus caribou) declines. Habitat restoration is a focus of caribou recovery efforts, with a goal to finding ways to reduce predator use of disturbances, and caribou-predator encounters. One of the most pervasive disturbances within caribou ranges in Alberta, Canada are seismic lines cleared for energy exploration. Seismic lines facilitate predator movement, and although vegetation on some seismic lines is regenerating, it remains unknown whether vegetation regrowth is sufficient to alter predator response...
2018: PloS One
https://www.readbyqxmd.com/read/29627957/compensatory-mortality-in-a-recovering-top-carnivore-wolves-in-wisconsin-usa-1979-2013
#16
Jennifer L Stenglein, Adrian P Wydeven, Timothy R Van Deelen
Populations of large terrestrial carnivores are in various stages of recovery worldwide and the question of whether there is compensation in mortality sources is relevant to conservation. Here, we show variation in Wisconsin wolf survival from 1979 to 2013 by jointly estimating the hazard of wolves' radio-telemetry ending (endpoint) and endpoint cause. In previous analyses, wolves lost to radio-telemetry follow-up (collar loss) were censored from analysis, thereby assuming collar loss was unconfounded with mortality...
April 7, 2018: Oecologia
https://www.readbyqxmd.com/read/29616166/predator-in-chief-wolves-in-editors-clothing
#17
EDITORIAL
Rod J Rohrich, Aaron G Weinstein
No abstract text is available yet for this article.
February 2018: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29611649/bovine-tuberculosis-outbreak-in-farmed-american-bison-bison-bison-in-poland
#18
M Krajewska-Wędzina, W Olech, M Kozińska, E Augustynowicz-Kopeć, M Weiner, K Szulowski
Poland has been an officially bovine tuberculosis (bTB) free country for the last seven years. The problem currently observed is the increasing number of new cases of bTB in wild species, kept in a farmed herd and free-living herd: European bison (Bison bonasus), wild boar (Sus scrofa), wolves (Canis lupus) and red deer (Cervus elaphus). This article presents the case of Mycobacterium caprae transmission to an American bison (Bison bison) herd kept on a private farm in Eastern Poland.
December 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/29531705/studies-of-modern-italian-dog-populations-reveal-multiple-patterns-for-domestic-breed-evolution
#19
Andrea Talenti, Dayna L Dreger, Stefano Frattini, Michele Polli, Stefano Marelli, Alexander C Harris, Luigi Liotta, Raffaella Cocco, Andrew N Hogan, Daniele Bigi, Romolo Caniglia, Heidi G Parker, Giulio Pagnacco, Elaine A Ostrander, Paola Crepaldi
Through thousands of years of breeding and strong human selection, the dog ( Canis lupus familiaris ) exists today within hundreds of closed populations throughout the world, each with defined phenotypes. A singular geographic region with broad diversity in dog breeds presents an interesting opportunity to observe potential mechanisms of breed formation. Italy claims 14 internationally recognized dog breeds, with numerous additional local varieties. To determine the relationship among Italian dog populations, we integrated genetic data from 263 dogs representing 23 closed dog populations from Italy, seven Apennine gray wolves, and an established dataset of 161 globally recognized dog breeds, applying multiple genetic methods to characterize the modes by which breeds are formed within a single geographic region...
March 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29491993/howl-variation-across-himalayan-north-african-indian-and-holarctic-wolf-clades-tracing-divergence-in-the-world-s-oldest-wolf-lineages-using-acoustics
#20
Lauren Hennelly, Bilal Habib, Holly Root-Gutteridge, Vicente Palacios, Daniela Passilongo
Vocal divergence within species often corresponds to morphological, environmental, and genetic differences between populations. Wolf howls are long-range signals that encode individual, group, and subspecies differences, yet the factors that may drive this variation are poorly understood. Furthermore, the taxonomic division within the Canis genus remains contended and additional data are required to clarify the position of the Himalayan, North African, and Indian wolves within Canis lupus . We recorded 451 howls from the 3 most basal wolf lineages-Himalayan C...
June 2017: Current Zoology
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