نتایج جستجو برای: domesticated animals

تعداد نتایج: 216108  

Journal: :Informatics in Education 2014
Michael Weigend

Scientific issues like the behavior of wild and domesticated animals can serve as a motivation to learn programming concepts. Instead of following a systematic introduction, the students directly dive into programming and start immediately with their projects. In this constructionist approach the educational challenge for the teacher is to provide suitable scaffolds like step-by-step instructio...

Journal: :The American naturalist 2013
Martin Krkošek Jaime Ashander L Neil Frazer Mark A Lewis

The exchange of native pathogens between wild and domesticated animals can lead to novel disease threats to wildlife. However, the dynamics of wild host-parasite systems exposed to a reservoir of domesticated hosts are not well understood. A simple mathematical model reveals that the spill-back of native parasites from domestic to wild hosts may cause a demographic Allee effect in the wild host...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Mikkel Schubert Hákon Jónsson Dan Chang Clio Der Sarkissian Luca Ermini Aurélien Ginolhac Anders Albrechtsen Isabelle Dupanloup Adrien Foucal Bent Petersen Matteo Fumagalli Maanasa Raghavan Andaine Seguin-Orlando Thorfinn S Korneliussen Amhed M V Velazquez Jesper Stenderup Cindi A Hoover Carl-Johan Rubin Ahmed H Alfarhan Saleh A Alquraishi Khaled A S Al-Rasheid David E MacHugh Ted Kalbfleisch James N MacLeod Edward M Rubin Thomas Sicheritz-Ponten Leif Andersson Michael Hofreiter Tomas Marques-Bonet M Thomas P Gilbert Rasmus Nielsen Laurent Excoffier Eske Willerslev Beth Shapiro Ludovic Orlando

The domestication of the horse ∼ 5.5 kya and the emergence of mounted riding, chariotry, and cavalry dramatically transformed human civilization. However, the genetics underlying horse domestication are difficult to reconstruct, given the near extinction of wild horses. We therefore sequenced two ancient horse genomes from Taymyr, Russia (at 7.4- and 24.3-fold coverage), both predating the earl...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2007
Greger Larson Umberto Albarella Keith Dobney Peter Rowley-Conwy Jörg Schibler Anne Tresset Jean-Denis Vigne Ceiridwen J Edwards Angela Schlumbaum Alexandru Dinu Adrian Balaçsescu Gaynor Dolman Antonio Tagliacozzo Ninna Manaseryan Preston Miracle Louise Van Wijngaarden-Bakker Marco Masseti Daniel G Bradley Alan Cooper

The Neolithic Revolution began 11,000 years ago in the Near East and preceded a westward migration into Europe of distinctive cultural groups and their agricultural economies, including domesticated animals and plants. Despite decades of research, no consensus has emerged about the extent of admixture between the indigenous and exotic populations or the degree to which the appearance of specifi...

Journal: :Anthropozoologica 2021

Ethnographic accounts demonstrate that hunting rituals for many Indigenous Peoples are meant to ensure the abundance and availability of game animals. This article shows that, among Tau-Buhid, itself is a ritual where human-spirit relationships fundamental their lifeworld. “Ritual-hunting” puts need meat secondary humans' relationship with spirit world. Ritual-hunting cannot be realized without...

Journal: :Ethnobiology Letters 2021

Yak, a species of bovid uniquely adapted to high-altitude environments, plays critical role in the life inhabitants Tibetan Plateau and neighboring areas. There is currently no consensus on when these animals may have been domesticated. In this paper, we review archaeological, genetic, linguistic evidence relevant question, suggest that domestication took place following hybridization with taur...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
David L Erickson Bruce D Smith Andrew C Clarke Daniel H Sandweiss Noreen Tuross

New genetic and archaeological approaches have substantially improved our understanding of the transition to agriculture, a major turning point in human history that began 10,000-5,000 years ago with the independent domestication of plants and animals in eight world regions. In the Americas, however, understanding the initial domestication of New World species has long been complicated by the e...

Journal: :Journal of infection in developing countries 2015
Aldo Manzin Francesca Mallus Lisa Macera Fabrizio Maggi Sylvain Blois

Infection with Torque teno viruses (TTVs) is not restricted to humans. Different domestic and wild animal species are naturally infected with species-specific TTVs worldwide. Due to the global spread of the infection, it is likely that essentially all animals are naturally infected with species-specific TTVs, and that co-evolution of TTVs with their hosts probably occurred. Although TTVs are po...

2016
Ahmad Z. AL-HERRAWY Mahmoud A. GAD

BACKGROUND The aim of the present work was to investigate the prevalence and species of intestinal microsporidiosis among animals in Giza, Egypt. METHODS A total of 869 animal fecal samples were collected from domesticated animals (dogs, cats, rabbits, cattle, buffaloes, sheep, goats, donkeys and pigs) living in Giza, Egypt. Spores of microsporidia were concentrated from collected samples by ...

Journal: :International journal of paleopathology 2018
Elizabeth W Uhl

Although vitamin D is critical to calcium/phosphorus homeostasis, bone formation and remodeling, there is evolution-based variation between species in vitamin D metabolism and susceptibility to rickets and osteomalacia. Most herbivores produce vitamin D3 in response to sunlight, but dogs and cats have generally lost the ability as carnivore diets are rich in vitamin D. Nutritional deficiencies ...

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