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Wolfdog
A wolfdog is a canine produced by the mating of a domestic dog (''Canis familiaris'') with a gray wolf (''Canis lupus''), eastern wolf (''Canis lycaon''), red wolf (''Canis rufus''), or Ethiopian wolf (''Canis simensis'') to produce a hybrid. Admixture There are a range of experts who believe that they can tell the difference between a wolf, a dog, and a wolfdog, but they have been proven to be incorrect when providing their evidence before courts of law. Admixture between domestic dogs and other subspecies of gray wolves are the most common wolfdogs since dogs and gray wolves are considered the same species, are genetically very close and have shared vast portions of their ranges for millennia. Such admixture in the wild have been detected in many populations scattered throughout Europe and North America, usually occurring in areas where wolf populations have declined from human impacts and persecutions. At the same time, wolfdogs are also often bred in captivity for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarloos Wolfdog
The Saarloos Wolfdog ( nl, Saarlooswolfhond, german: Saarlooswolfhund) is a wolf-dog breed originating from the Netherlands by the crossing of a German Shepherd with a Siberian grey wolf in 1935. The offspring were then further crossed with German Shepherds. History Leendert Saarloos (1884–1969) was a Dutch zoologist and dog breeder who believed that the German Shepherd had become too domesticated and wanted to breed back the more natural properties in order to derive a better working dog. In 1935, he bred a male German Shepherd (german: Deutscher Schäferhund, nl, Duitse herdershond) to a female Eurasian grey wolf (''Canis lupus lupus'') from Siberia. He then bred the offspring back with German Shepherds to derive a dog with one quarter wolf blood. The result was a dog that was not useful as a working dog but as companion that is close to nature. The Dutch Kennel Club recognized the breed in 1975. To honour its creator, they named this dog the "Saarloos wolfdog". In 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saarloos Wolfdog
The Saarloos Wolfdog ( nl, Saarlooswolfhond, german: Saarlooswolfhund) is a wolf-dog breed originating from the Netherlands by the crossing of a German Shepherd with a Siberian grey wolf in 1935. The offspring were then further crossed with German Shepherds. History Leendert Saarloos (1884–1969) was a Dutch zoologist and dog breeder who believed that the German Shepherd had become too domesticated and wanted to breed back the more natural properties in order to derive a better working dog. In 1935, he bred a male German Shepherd (german: Deutscher Schäferhund, nl, Duitse herdershond) to a female Eurasian grey wolf (''Canis lupus lupus'') from Siberia. He then bred the offspring back with German Shepherds to derive a dog with one quarter wolf blood. The result was a dog that was not useful as a working dog but as companion that is close to nature. The Dutch Kennel Club recognized the breed in 1975. To honour its creator, they named this dog the "Saarloos wolfdog". In 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czechoslovakian Wolfdog
The Czechoslovakian Wolfdog ( cz, Československý vlčák, sk, Československý vlčiak, german: Tschechoslowakischer Wolfhund) is a wolf-dog breed that began as an experiment conducted in Czechoslovakia in 1955. After initially breeding working line German Shepherds with Carpathian grey wolves, a plan was worked out to create a breed that would have the temperament, pack mentality, and trainability of the German Shepherd and the strength, physical build and stamina of the Carpathian wolf. The breed were originally used as Border patrol dogs but were later also used in search and rescue, Schutzhund sport, tracking, herding, agility, obedience, hunting, and drafting in Europe and the United States. It was officially recognized as a national breed in Czechoslovakia in 1982, and was officially recognised as a breed by Fédération Cynologique Internationale (FCI) in 1989. History In 1955, Karel Hartl began to consider crossing a Carpathian grey wolf with a German Shep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coydog
A coydog is a canid hybrid resulting from a mating between a male coyote and a female dog. Hybrids of both sexes are fertile and can be successfully bred through four generations. Similarly, a dogote is a hybrid with a dog father and a coyote mother. Such matings occurred long before the European colonization of the Americas, as melanistic coyotes have been shown to have inherited their black pelts from dogs likely brought to North America through the Bering Land Bridge 12,000 to 14,000 years ago by the ancestors of the indigenous peoples of the Americas. Coydogs were deliberately bred in Pre-Columbian Mexico, where coyotes were held in high regard. In the city of Teotihuacan, it was common practice to crossbreed coyotes and Mexican wolves with dogs in order to breed resistant, loyal but temperamental, good guardians.Valadez, R., Rodríguez, B., Manzanilla, L. & Tejeda, S. (2006)Dog-wolf hybrid biotype reconstruction from the archaeological city of Teotihuacan in prehispanic centra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Wolf
The Arctic wolf (''Canis lupus arctos''), also known as the white wolf or polar wolf, is a subspecies of grey wolf native to the High Arctic tundra of Canada's Queen Elizabeth Islands, from Melville Island to Ellesmere Island.https://ecoregions.appspot.com/ Unlike some populations that move between tundra and forest regions, Arctic wolves spend their entire lives north of the northern treeline. Their distribution to south is limited to the northern fringes of the Middle Arctic tundra on the southern half of Prince of Wales and Somerset Islands. It is a medium-sized subspecies, distinguished from the northwestern wolf by its smaller size, its whiter colouration, its narrower braincase,Goldman, E. A. (1964). Classification of wolves. In ''The Wolves of North America'' Part 2. Young, S. P. & Goldman, E. A. (Eds.) New York: Dover Publs. p. 430. and larger carnassials. Since 1930, there has been a progressive reduction in size in Arctic wolf skulls, which is likely the result o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apennines
The Apennines or Apennine Mountains (; grc-gre, links=no, Ἀπέννινα ὄρη or Ἀπέννινον ὄρος; la, Appenninus or – a singular with plural meaning;''Apenninus'' (Greek or ) has the form of an adjective, which would be segmented ''Apenn-inus'', often used with nouns such as ("mountain") or Greek (), but ''Apenninus'' is just as often used alone as a noun. The ancient Greeks and Romans typically but not always used "mountain" in the singular to mean one or a range; thus, "the Apennine mountain" refers to the entire chain and is translated "the Apennine mountains". The ending can vary also by gender depending on the noun modified. The Italian singular refers to one of the constituent chains rather than to a single mountain, and the Italian plural refers to multiple chains rather than to multiple mountains. it, Appennini ) are a mountain range consisting of parallel smaller chains extending along the length of peninsular Italy. In the northwest th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical region. Italy is also considered part of Western Europe, and shares land borders with France, Switzerland, Austria, Slovenia and the enclaved microstates of Vatican City and San Marino. It has a territorial exclave in Switzerland, Campione. Italy covers an area of , with a population of over 60 million. It is the third-most populous member state of the European Union, the sixth-most populous country in Europe, and the tenth-largest country in the continent by land area. Italy's capital and largest city is Rome. Italy was the native place of many civilizations such as the Italic peoples and the Etruscans, while due to its central geographic location in Southern Europe and the Mediterranean, the country has also historically been home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beta-defensin 3
Beta-defensin 3 is a protein that in humans is encoded by the ''DEFB3'' gene In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba .... HBD-3 was first isolated from human lesional psoriatic scales. RT-PCR showed HBD-3 to be expressed highly in skin, trachea, tongue and tonsils, with lower levels found salivary glands, uterus, kidney, bone marrow, thymus, colon, stomach, adenoid, pharynx, and larynx. References {{reflist Peripheral membrane proteins Defensins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein
Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20–30 residues, are rarely considered to be proteins and are commonly called peptides. The individual amino acid residues are bonded together by peptide bonds and adjacent amino acid residues. The sequence of amino acid residue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutation
In biology, a mutation is an alteration in the nucleic acid sequence of the genome of an organism, virus, or extrachromosomal DNA. Viral genomes contain either DNA or RNA. Mutations result from errors during DNA or viral replication, mitosis, or meiosis or other types of damage to DNA (such as pyrimidine dimers caused by exposure to ultraviolet radiation), which then may undergo error-prone repair (especially microhomology-mediated end joining), cause an error during other forms of repair, or cause an error during replication (translesion synthesis). Mutations may also result from insertion or deletion of segments of DNA due to mobile genetic elements. Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity. Mutation is the ultimate source o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolph Murie
Adolph Murie (September 6, 1899 – August 16, 1974), the first scientist to study wolves in their natural habitat, was a naturalist, author, and wildlife biologist who pioneered field research on wolves, bears, and other mammals and birds in Arctic and sub-Arctic Alaska. He was also instrumental in protecting wolves from eradication and in preserving the biological integrity of the Denali National Park and the Arctic National Wildlife Refuge. In 1989 Professor John A. Murray of the English Department at the University of Alaska, Fairbanks received an NEH grant to inventory the extensive Adolph Murie written and slide archives at Rasmusson Library in the Arctic and Polar Collection. He wrote a forty-page report and biographical narrative of Adolph Murie, which remains unpublished but which is in his papers. Early life Adolf Winstrom was born on September 6, 1899, in Moorhead, Minnesota, the child of Ed and Marie Winstrom. In 1922, prior to completing college, Adolph Murie joined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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