نتایج جستجو برای: 2003 wolves behavior

تعداد نتایج: 731959  

Journal: :Behavioral Ecology 2021

Abstract Domestication has greatly changed the social and reproductive behavior of dogs relative to that wild members genus Canis, which typically exhibit monogamy extended parental care. Unlike a typical gray wolf pack consists single breeding pair their offspring from multiple seasons, group free-ranging (FRDs) can include individuals both sexes. To understand consequences this shift in behav...

2012
Astrid V Stronen Nathalie Tessier Hélène Jolicoeur Paul C Paquet Michel Hénault Mario Villemure Brent R Patterson Tim Sallows Gloria Goulet François-Joseph Lapointe

Contemporary evolution through human-induced hybridization occurs throughout the taxonomic range. Formerly allopatric species appear especially susceptible to hybridization. Consequently, hybridization is expected to be more common in regions with recent sympatry owing to human activity than in areas of historical range overlap. Coyotes (Canis latrans) and gray wolves (C. lupus) are historicall...

2012
ULF MARQUARD-PETERSEN

The decline and extermination of an arctic wolf population in East Greenland between 1899 and 1939 were investigated through analysis of 40 years of archival data, which contained records of 252 sightings of wolves or their tracks. Prior to the start of exploitation by Europeans, this small, isolated wolf population probably consisted of about 38 wolves during an average year. Of 112 wolves sig...

Journal: :Behavioral Ecology 2021

Abstract Comprehensive knowledge of ambush behavior requires an understanding where a predator expects prey to be, which is generally unknowable because predators often hunt mobile that exhibit complex, irregular, or inconspicuous movements. Wolves (Canis lupus) are primarily cursorial predators, but they use strategies beavers (Castor canadensis). Terrestrial beaver activity predictable well-d...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Layne G Adams Sean D Farley Craig A Stricker Dominic J Demma Gretchen H Roffler Dennis C Miller Robert O Rye

Wolves (Canis lupus) in North America are considered obligate predators of ungulates with other food resources playing little role in wolf population dynamics or wolf prey relations. However, spawning Pacific salmon (Oncorhyncus spp.) are common throughout wolf range in northwestern North America and may provide a marine subsidy affecting inland wolf-ungulate food webs far from the coast. We co...

Journal: :محیط زیست طبیعی 0
منصوره حسن زاده دانشجوی کارشناسی ارشد مهندسی محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران محمد کابلی استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران رسول خسروی دانشجوی کارشناسی ارشد مهندسی محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران محسن احمدی دانشجوی کارشناسی ارشد مهندسی محیط زیست، دانشکده منابع طبیعی، دانشگاه تهران، ایران

inappropriate waste management is considered as an important factor for attracting wild animals to the inhabited area. this leads to food conditioning in some wild species, which changes their feeding behavior and food habits. usually this trend reduces the fear of wild species and leads to conflict between wild species and human. we sampled five landfill sites of villages and small towns in wh...

Journal: :Current Biology 2007
Nigel Williams

Wolves in America and Europe are facing a change of fortune after centuries of hunting that have seen them become extinct in many areas and reduced to tiny populations elsewhere. But new conservation measures in the US and Europe are having a dramatic impact. Wolves have already recolonised parts of the US Rocky Mountains, and they have been reintroduced successfully to parts of Idaho and Monta...

Journal: :Brain research. Molecular brain research 2004
Peter Saetre Julia Lindberg Jennifer A Leonard Kerstin Olsson Ulf Pettersson Hans Ellegren Tomas F Bergström Carles Vilà Elena Jazin

Despite the relatively recent divergence time between domestic dogs (Canis familiaris) and gray wolves (Canis lupus), the two species show remarkable behavioral differences. Since dogs and wolves are nearly identical at the level of DNA sequence, we hypothesize that the two species may differ in patterns of gene expression. We compare gene expression patterns in dogs, wolves and a close relativ...

2011
Wolf Pack William Campbell Martin Charlie Chaplin

Wolves are natural hunters. Their ability to hunt in a pack presents an effective model for controlling the motion of multiple robots. In particular, this is highly useful in the field of swarm robotics, where numerous agents act together to produce a collective behavior. This thesis investigates and implements a physical wolf pack in order to create emergent swarm hunting behaviors. These are ...

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