Difference between revisions of "AY Honors/Small Mammal Pets/Answer Key"

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A sub-species of [[hamster]], scientific name ''Cricetus Griseus'', which originate in the deserts of Southern [[China]] and [[Mongolia]]. These animals grow to between 7.5 and 9cm in length and as adults can weight 50-75 grams. They live two to three years on average.  
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{{Taxobox begin | color = pink | name = Golden or Syrian Hamster}}
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{{Taxobox image | image = [[Image:100_983.jpg|250px]] | caption =
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}}
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{{Taxobox begin placement | color = pink}}
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{{Taxobox regnum entry | taxon = [[Animal]]ia}}
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{{Taxobox phylum entry | taxon = [[Chordate|Chordata]]}}
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{{Taxobox subphylum entry | taxon = [[Vertebrate|Vertebrata]]}}
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{{Taxobox classis entry | taxon = [[Mammal]]ia}}
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{{Taxobox ordo entry | taxon = [[Rodent]]ia}}
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{{Taxobox subordo entry | taxon = [[Sciurognathi]]}}
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{{Taxobox superfamilia entry | taxon = [[Muroidea]]}}
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{{Taxobox familia entry | taxon = [[Cricetidae]]}}
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{{Taxobox subfamilia entry | taxon = [[Cricetinae]]}}
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{{Taxobox genus entry | taxon = ''[[Mesocricetus]]''}}
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{{Taxobox species entry | taxon = '''''M. auratus'''''}}
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{{Taxobox end placement}}
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{{Taxobox section binomial | color = pink | binomial_name = Mesocricetus auratus | author = [[George Robert Waterhouse|Waterhouse]], | date = 1839}}
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{{Taxobox end}}
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The '''Syrian Hamster''' or '''Golden Hamster''', ''Mesocricetus auratus'', is the best known member of the [[rodent]] [[subfamily]] [[Cricetinae]], the [[hamster]]s. They may now be [[extinct]] in nature, but are popular as house pets all across the world, and are also used in scientific research. Adults grow from 12.5 to 17.5 cm (5 to 7 inches) in length, and in captivity will usually live from 2 to 3 years.
  
A Chinese hamster's body proportions, compared with those of other hamsters, appear "long and thin" and they have (for a hamster) a relatively long tail. Chinese hamsters are not, technically, "Dwarf" hamsters since this term refers to animals in the genus Phodopus, (the two types of Russian Dwarf hamsters and Roborovskii's Dwarf hamsters).
 
  
The wild colour is greyish brown above with a black stripe down the spine and a whitish belly. This colouration, combined with their lithe build and longer tail, makes them look "mousy" to some eyes and, in fact, they are members of the group called "mouse like" hamsters. However, they have quiet temperaments and are easily handled; one of their endearing traits is that of clinging to a finger with all four paws, rather like a harvest mouse on a corn stalkChinese hamsters can be quite nervous as youngsters but, once they are tame, display an endearing calmness and gentleness of character.
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==Biology==
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Like most members of the subfamily, the Golden Hamster has a face like marie of kitchener...who smells really bad....and loves to disect worms.... expandable cheek pouches, which reach from its cheeks to its shoulders.  In the wild, hamsters are [[larder hoarding|larder hoarders]], and they use their cheek pouches to transport food to their burrows.  They can load a remarkable amount of food into their pouches; their name in the local [[Arabic language|Arabic]] dialect in the area where they are found translates as "father of saddlebags" &#1571;&#1576;&#1608; &#1580;&#1585;&#1575;&#1576;.  If food is plentiful, they will store it in large amounts, and it has been reported that 25 kg of grain was found in the burrow of a single hamster.
  
Biotech drugs are commonly produced by putting the gene for the protein into Chinese hamster ovary cells, which then churn out the protein.
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Most hamsters in American and English pet stores are Syrian Hamsters.  ''Teddy Bear'' is a term sometimes used for the longhaired variety of the Syrian Hamster, and the so-called ''Black Bear'' hamster is just a Syrian Hamster with black fur. All of them may well indeed be the descendants of a single mother.
  
{{mammal-stub}}
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Golden Hamsters have been used in scientific research, in the study of many diseases, and also in the study of behaviour.  They have a number of [[fixed action pattern]]s that are readily observed, including scent-marking.
  
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It is widely used in medical research, particularly in airway and respiratory physiology research.
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== Discovery of the Syrian Hamster ==
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In [[1839]] [[Britain|British]] [[zoologist]] [[George Robert Waterhouse]] reportedly found an elderly female hamster in Syria, naming it ''Cricetus auratus,'' the Golden Hamster. The hamster's fur was on display at the [[British Museum (Natural History)]].  The Syrian Hamster was then ignored by European science for the next century. Around 1930, zoologist and Professor at the University of Jerusalem [[Israel Aharoni]] found a mother and litter of hamsters in the [[Syria]]n desert. By the time he got back to his lab, most had died or escaped. The remaining hamsters were given to the [[Hebrew University of Jerusalem]], where they were successfully bred. They were a bit bigger than the ones Waterhouse found, so they were named ''Mesocricetus auratus'', although they were probably the same species. ''Mesocricetus auratus'' is the currently accepted scientific name of Syrian Hamsters.
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Descendants of these hamsters were shipped to scientific labs around the world, for use as research animals. They arrived in the [[United Kingdom]] in 1931, and in 1938 reached the United States. Just about all Golden Hamsters are descended from the original litter found in Syria, except for a few that were brought into the United States by travellers who found them in the desert. A separate stock of hamsters was imported into the US in 1971, but it isn't known if any of today's North American pets are descended from them.
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''See also [[Hamster]] for a general discussion of hamsters and hamsters as pets.''
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==External link==
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*[http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&id=10036&lvl=3&keep=1&srchmode=1&unlock Genome information]
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*[http://www.freedigitalphotos.net/thumbnails.php?album=9 Pictures of a Syrian or golden hamster]
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[[Category:Animals kept as pets]]
 
[[Category:Hamsters]]
 
[[Category:Hamsters]]
[[fr:Cricetulus]]
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[[bg:&#1047;&#1083;&#1072;&#1090;&#1080;&#1089;&#1090; &#1093;&#1072;&#1084;&#1089;&#1090;&#1077;&#1088;]]
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[[de:Goldhamster]]
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[[he:&#1488;&#1493;&#1490;&#1512; &#1494;&#1492;&#1493;&#1489;]]
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[[fi:Kultahamsteri]]
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[[nl:Goudhamster]]
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[[pl:Chomik syryjski]]
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[[sv:Guldhamster]]

Revision as of 17:30, 6 December 2005

Template:Taxobox begin Template:Taxobox image Template:Taxobox begin placement Template:Taxobox regnum entry Template:Taxobox phylum entry Template:Taxobox subphylum entry Template:Taxobox classis entry Template:Taxobox ordo entry Template:Taxobox subordo entry Template:Taxobox superfamilia entry Template:Taxobox familia entry Template:Taxobox subfamilia entry Template:Taxobox genus entry Template:Taxobox species entry Template:Taxobox end placement Template:Taxobox section binomial Template:Taxobox end The Syrian Hamster or Golden Hamster, Mesocricetus auratus, is the best known member of the rodent subfamily Cricetinae, the hamsters. They may now be extinct in nature, but are popular as house pets all across the world, and are also used in scientific research. Adults grow from 12.5 to 17.5 cm (5 to 7 inches) in length, and in captivity will usually live from 2 to 3 years.


Biology

Like most members of the subfamily, the Golden Hamster has a face like marie of kitchener...who smells really bad....and loves to disect worms.... expandable cheek pouches, which reach from its cheeks to its shoulders. In the wild, hamsters are larder hoarders, and they use their cheek pouches to transport food to their burrows. They can load a remarkable amount of food into their pouches; their name in the local Arabic dialect in the area where they are found translates as "father of saddlebags" أبو جراب. If food is plentiful, they will store it in large amounts, and it has been reported that 25 kg of grain was found in the burrow of a single hamster.

Most hamsters in American and English pet stores are Syrian Hamsters. Teddy Bear is a term sometimes used for the longhaired variety of the Syrian Hamster, and the so-called Black Bear hamster is just a Syrian Hamster with black fur. All of them may well indeed be the descendants of a single mother.

Golden Hamsters have been used in scientific research, in the study of many diseases, and also in the study of behaviour. They have a number of fixed action patterns that are readily observed, including scent-marking.

It is widely used in medical research, particularly in airway and respiratory physiology research.

Discovery of the Syrian Hamster

In 1839 British zoologist George Robert Waterhouse reportedly found an elderly female hamster in Syria, naming it Cricetus auratus, the Golden Hamster. The hamster's fur was on display at the British Museum (Natural History). The Syrian Hamster was then ignored by European science for the next century. Around 1930, zoologist and Professor at the University of Jerusalem Israel Aharoni found a mother and litter of hamsters in the Syrian desert. By the time he got back to his lab, most had died or escaped. The remaining hamsters were given to the Hebrew University of Jerusalem, where they were successfully bred. They were a bit bigger than the ones Waterhouse found, so they were named Mesocricetus auratus, although they were probably the same species. Mesocricetus auratus is the currently accepted scientific name of Syrian Hamsters.

Descendants of these hamsters were shipped to scientific labs around the world, for use as research animals. They arrived in the United Kingdom in 1931, and in 1938 reached the United States. Just about all Golden Hamsters are descended from the original litter found in Syria, except for a few that were brought into the United States by travellers who found them in the desert. A separate stock of hamsters was imported into the US in 1971, but it isn't known if any of today's North American pets are descended from them.

See also Hamster for a general discussion of hamsters and hamsters as pets.

External link

bg:Златист хамстер de:Goldhamster he:אוגר זהוב fi:Kultahamsteri nl:Goudhamster pl:Chomik syryjski sv:Guldhamster