نتایج جستجو برای: 2002 forest composition around wolf canis lupus dens in eastern algonquin provincial park

تعداد نتایج: 17108054  

2017
Suvi Viranta Anagaw Atickem Lars Werdelin Nils Chr. Stenseth

Background: The African wolf, for which we herein recognise Canis lupaster Hemprich and Ehrenberg, 1832 (Symbolae Physicae quae ex Itinere Africam Borealem er Asoam Occidentalem Decas Secunda. Berlin, 1833) as the valid species name (we consider the older name Canis anthus Cuvier, 1820 [Le Chacal de Sénégal, Femelle. In: Geoffroy St.-Hilaire E, Cuvier F, editors. Histoire Naturelle des Mammifèr...

2005
Lucina Hernández John W. Laundré Johan T. du Toit

In 1995, wolves Canis lupus were reintroduced into Yellowstone National Park, USA, where they began to prey on ungulate species. In response to this new predation risk by wolves, we predicted that the two main ungulate species, elk Cervus elaphus and bison Bison bison, should compensate by reducing their use of riskier open meadows and increasing their use of safer forest. Additionally we predi...

Journal: :محیط زیست طبیعی 0
فاطمه زوارئی انجمن یوزپلنگ ایرانی، ایران محمد صادق فرهادی نیا انجمن یوزپلنگ ایرانی، ایران اصغر عبدلی پژوهشکده علوم محیطی، دانشگاه شهید بهشتی، ایران محمد بهشتی زواره انجمن یوزپلنگ ایرانی، ایران آرش صادقی انجمن یوزپلنگ ایرانی، ایران

despite its largest range of distribution in comparison to other large carnivores in iran, the grey wolf has been the least-studied carnivore in the country with limited available data on its ecology. its social life and population composition have been investigated across its global range in europe and north america; however, it has been less explored in arid environments of asia. accordingly,...

2014
L. David Mech Bruce W. Christensen Cheryl S. Asa Margaret Callahan Julie K. Young

Using artificial insemination we attempted to produce hybrids between captive, male, western, gray wolves (Canis lupus) and female, western coyotes (Canis latrans) to determine whether their gametes would be compatible and the coyotes could produce and nurture offspring. The results contribute new information to an ongoing controversy over whether the eastern wolf (Canis lycaon) is a valid uniq...

2013
BRENT R. PATTERSON

Although some populations remain stable, moose (Alces alces) density and distribution have been declining in many areas along the southern edge of their North American distribution. During 2006– 2009, we deployed 99 vaginal implant transmitters (VITs) in 86 adult female moose in central Ontario, Canada to assist in locating and radiocollaring neonatal moose calves. We monitored radiocollared ca...

2017
Aimee Tallian Andrés Ordiz Matthew C Metz Cyril Milleret Camilla Wikenros Douglas W Smith Daniel R Stahler Jonas Kindberg Daniel R MacNulty Petter Wabakken Jon E Swenson Håkan Sand

Trophic interactions are a fundamental topic in ecology, but we know little about how competition between apex predators affects predation, the mechanism driving top-down forcing in ecosystems. We used long-term datasets from Scandinavia (Europe) and Yellowstone National Park (North America) to evaluate how grey wolf (Canis lupus) kill rate was affected by a sympatric apex predator, the brown b...

2007
K. Fox-Dobbs J. K. Bump R. O. Peterson D. L. Fox P. L. Koch

We use carbon and nitrogen isotope data collected from two North American gray wolf (Canis lupus L., 1758) populations (Isle Royale and northern Minnesota) to both calculate carnivore-specific isotopic variables and investigate wolf foraging ecology. The isotopic enrichments of 13C and 15N that occur between mammalian carnivores and their prey have not been well defined in modern populations. W...

2003
Janice Koler-Matznick

The most widely accepted hypothesis of the origin of the dog, Canis familiaris, is that the dog is a domesticated gray wolf, Canis lupus. This paper reviews the evidence for this conclusion, finds many unanswered questions and conceptual gaps in the wolf origin hypothesis, and explores the alternative hypothesis that the most likely ancestor of the domestic dog was a medium-size, generalist can...

Journal: :Zoological science 2009
Naotaka Ishiguro Yasuo Inoshima Nobuo Shigehara

Mitochondrial DNA (mtDNA) D-loop control region sequences ranging In length from 583 to 598 bp were determined for eight Japanese wolf specimens (Canis lupus hodophilax Temminck, 1839) collected from several sites and compared with 105 haplotypes from the domestic dog (C. lupus familiaris) and continental grey wolf (C. lupus lupus). Also, a 197-bp mtDNA sequence was amplified from archaeologica...

Journal: :Proceedings. Biological sciences 2004
Dinesh K Sharma Jesus E Maldonado Yadrendradev V Jhala Robert C Fleischer

All previously obtained wolf (Canis lupus) and dog (Canis familiaris) mitochondrial (mt) DNA sequences fall within an intertwined and shallow clade (the 'wolf-dog' clade). We sequenced mtDNA of recent and historical samples from 45 wolves from throughout lowland peninsular India and 23 wolves from the Himalayas and Tibetan Plateau and compared these sequences with all available wolf and dog seq...

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