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| Is there any 100% evidence/proof of wolf/dog hybrids? | |
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| Tweet Topic Started: Oct 22 2017, 02:17 PM (2,082 Views) | |
| Taiwan | Nov 13 2017, 12:43 AM Post #16 |
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Unicellular Organism
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https://en.wikipedia.org/wiki/Wolfdog http://www.wolf.org/wolf-info/basic-wolf-info/wolves-and-humans/wolf-dog-hybrids/ sad these creatures are domesticated. |
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| Grazier | Nov 13 2017, 12:09 PM Post #17 |
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Omnivore
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Why? I feel more sorry for wild wolves. |
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| K9 Bite | Nov 19 2017, 07:21 PM Post #18 |
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Herbivore
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Being domesticated was a good thing for dogs. They're the most widespread large carnivore today, a title the Gray Wolf used to hold before humans and their dogs ran them into the brink of extinction. It's happaned in Europe, North America, the Middle East, pretty much everywhere. Wolf packs consume alot, more so than some big cats based on a paper on this forum about tiger-wolf interactions. Man pretty much became dog's best friend and although domesticated dogs are useful, they need us more than we need them. Otherwise, they'd be where the wolves are right now....in a wildlife perserve or on someone's floor as a throw rug. |
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| Taipan | Nov 19 2017, 07:36 PM Post #19 |
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Thought that was Panthera leo, assuming atrox was a subspecies of P. leo. |
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| Claudiu Constantin Nicolaescu | Nov 19 2017, 11:06 PM Post #20 |
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Heterotrophic Organism
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I do not think the living species the lion (Panthera leo) and the extinct big cats species Panthera fossilis, Panthera spelaea, and Panthera atrox are conspecific. |
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| Kazanshin | Nov 20 2017, 01:56 AM Post #21 |
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Herbivore
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Damn, son, where'd you find this? (((*≧艸≦)ププッ |
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| Ryo | Nov 20 2017, 02:02 AM Post #22 |
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Omnivore
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I recall hearing in the danish news a few weeks ago that black Wolfdogs had begun to appear in Sweden. |
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| K9 Bite | Nov 20 2017, 04:35 AM Post #23 |
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Herbivore
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I can't find the original source that claimed wolves used to be the most widespread large carnivore but here's a pdf i found on the domination of domestic dogs today. https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.tau.ac.il/lifesci/zoology/members/yom-tov/inbal/dogs.pdf&ved=0ahUKEwihgKy-qsvXAhXJwiYKHUJsA8IQFggnMAI&usg=AOvVaw1dANLfHMkBXRBbGorR2zpm Edited by K9 Bite, Nov 20 2017, 04:40 AM.
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| Taipan | Mar 22 2018, 03:34 PM Post #24 |
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New genetic research shows extent of cross-breeding between wild wolves and domestic dogs Date: March 21, 2018 Source: University of Lincoln Summary: An international study has shown that mating between domesticated dogs and wild wolves over hundreds of years has left a genetic mark on the wolf gene pool. ![]() Credit: © Angela Rohde / Fotolia Mating between domesticated dogs and wild wolves over hundreds of years has left a genetic mark on the wolf gene pool, new research has shown. The international study showed that around 60 per cent of Eurasian grey wolf genomes carried small blocks of the DNA of domestic dogs, suggesting that wolves cross-bred with dogs in past generations. The results suggest that wolf-dog hybridisation has been geographically widespread in Europe and Asia and has been occurring for centuries. The phenomenon is seen less frequently in wild wolf populations of North America. Researchers examined DNA data from grey wolves -- the ancestors of the domestic dog -- to determine how much their gene pool was diluted with the DNA of domestic canines, and how widespread the process of hybridisation is. Despite the evidence of hybridisation among Eurasian grey wolves, the wolf populations have remained genetically distinct from dogs, suggesting that such cross-breeding does not diminish distinctiveness of the wolf gene pool if it occurs at low levels. The results could have important conservation implications for the grey wolf, which is a keystone species -- meaning it is vital to the natural balance of the habitat it occupies. The legal status of hybrids is still uncertain and unregulated. The study was led by researchers from the University of Lincoln, UK, the Italian National Institute for Environmental Protection and Research and the University of California, Los Angeles. Dr Malgorzata Pilot, from the School of Life Sciences at the University of Lincoln, said: "The fact that wild wolves can cross-breed with dogs is well-documented, but little was previously known about how widespread this phenomenon has been and how it has affected the genetic composition of wild wolf populations. "We found that while hybridisation has not compromised the genetic distinctiveness of wolf populations, a large number of wild wolves in Eurasia carry a small proportion of gene variants derived from dogs, leading to the ambiguity of how we define genetically 'pure wolves'. "Our research highlighted that some individual wolves which had been identified as 'pure wolves' according to their physical characteristics were actually shown to be of mixed ancestry. On the other hand, two Italian wolves with an unusual, black coat colour did not show any genetic signatures of hybridisation, except for carrying a dog-derived variant of a gene linked to dark colouration. This suggests that the definition of genetically 'pure' wolves can be ambiguous and identifying admixed individuals can be difficult, implying that management strategies based on removal of suspected hybrids from wolf populations may be inefficient. "Instead, our study has highlighted a need to reduce the factors which can cause hybridisation, such as abundance of free-ranging dogs, small wolf population sizes, and unregulated hunting." Studying a specific type of genetic variation in the DNA sequences of wolves and domestic dogs -- called Single Nucleotide Polymorphisms (SNPs) -- the scientists identified the transfer of dog gene variants into wolf genomes. A single DNA sequence is formed from a chain of four nucleotide bases and if some individuals in a population do not carry the same nucleotide at a specific position in the sequence, the variation is classified as an SNP. Story Source: University of Lincoln. "New genetic research shows extent of cross-breeding between wild wolves and domestic dogs." ScienceDaily. www.sciencedaily.com/releases/2018/03/180321094745.htm (accessed March 21, 2018). Journal Reference: Adrián Castro-Insua, Carola Gómez-Rodríguez, Jens-Christian Svenning, Andrés Baselga. A new macroecological pattern: The latitudinal gradient in species range shape. Global Ecology and Biogeography, 2018; 27 (3): 357 DOI: 10.1111/geb.12702 https://onlinelibrary.wiley.com/doi/abs/10.1111/geb.12702 |
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| hulaguHan | Mar 23 2018, 05:50 AM Post #25 |
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Heterotrophic Organism
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North American wolves are hybrids. |
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