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35 Cards in this Set
- Front
- Back
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What is the largest order of mammals? how much percentage of mammals is in this order?
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Rodentia; 42%
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Describe the Rodentia order.
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incisors are persistently growing, only anterior surfaces covered w/ enamel, chiseled tip teeth; some species cheek teeth are also persistently growing, dental formula never exeeds
1023 1013, incisors and canines always 10/10, diastema present, masseter muscles large and complexly divided |
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What is the subclass, infraclass, order and family of tree squirrels, prarie dogs and marmots?
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Theria
Eutheria Rodentia Sciuridae |
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Describe the family Sciuridae.
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long tail except in semifossorial species, diurnal herbivores, some hibernate
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What is the subclass, infraclass, order and family of beavers?
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Theria
Eutheria Rodentia Castoridae |
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What does internarial mean?
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lies above soft palate, enables transfer of air from nasal passages to trachea, but does not allow much breathing
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Describe the Castoridae family.
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webbed hind feet, valvular nostrils, nititating membranes in eyes, internarial epiglottis for opening mouth under water, elevated mid-dorsal surface of the posterior part of tongue tightly against palate for opening mouth under water; 1013/1013
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What is the subclass, infraclass, order and familyof old world rats and mice? what percent of mammals do they make up?
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Theria
Eutheria Rodentia Muridae 13% |
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Where did the Murinae subfamily (Muridae family) originate? where were they introduced?
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Asia, introduced worldwide US and Candada populated
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What kind of diseases does the Muridae family spread?
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plague (was molsty black rat fleas); Murine typhus- causes severe damage to stored grain
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Why is the Muridae family impt?
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white rat and white mouse and house mice are impt. in biological and medical research
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What is the subclass, infraclass, order and family for New world rats and mice, lemmings, voles and muskrats?
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Theria
Eutheria Rodentia Cricetidae |
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What is the largest subfamily of the family Cricetidae?
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Sigmodontinae
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What are some examples of animals that belong to the Family Cricetidae?
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cotton rats, deer mice, rice rats, voles, lemmings, white-footed mouse, common muskrat, harvest mice, woodrats,
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What are some examples of animals that belong to the Family Muridae?
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norway rat, black rat, house mouse
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What are two impt. diseases deer mice have been associated w/?
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lime disease- bacterial infection carried by deer ticks,
hantavirus-respiratory illness |
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What is the subclass, infraclass, order and family of new world porcupines?
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Theria
Eutheria Rodentia Erethizontidae |
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Describe the family Erethizontidae.
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inhiabit N & S america, have quills, has tubercles increase traction
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What is the subclass, infraclass, order and family nutria or coypu?
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Theria
Eutheria Rodentia Myocastoridae |
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Describe the Myocastoridae family.
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serious pest, inner 4 toes webbed, orange protruding incisors
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What is the subclass, infraclass, order and family of kangaroo rats, kangaroo mice, pocket mice?
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Theria
Eutheria Rodentia Heteromyidae |
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What is special about the family Heteromyidae?
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have furred cheek pouches
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What is the subclass, infraclass, order and family of pocket gophers?
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Theria
Eutheria Rodentia Geomyidae; cheek pouches |
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What is the subclass, infraclass and order of rabbits, hares and pikas?
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Theria
Eutheria Lagomorpha |
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What is the subclass, infraclass and order and family of rabbits and hares?
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Theria
Eutheria Lagomorpha Leporidae |
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What is the subclass, infraclass and order and family of pikas?
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Theria
Eutheria Lagomorpha Ochotonidae |
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Describe the order lagomorpha.
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have fenestrated skull-thin, lattice like bone; first incisors are evergrowing but 2/1 rather than 1/1, digitigrade when running, plantigrade w/ slow movement
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What is the difference between hares, rabbits and pikas?
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hares and rabbits- short tails
pikas-not externally evident; much less adapted for running |
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Describe the leporidae family.
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long ears and hind legs, cursorial habitats adapted for, occupy wide variety of habitats, some in US are good swimmers,
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What is the most common rabbit in much of US?
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Eastern Cottontail
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What is coprophagous?
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feeds on its own fecal pellets
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What is the family leporidae's litter size inversely related to?
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latitude
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Describe the leporidae family.
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altricial young, born in nest in ground, litter size 3-6, 3-4 litters per yr.
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What is the largest cottontail and where is it located?
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in part of SC, swamp rabbit or cane-cutter; excellent swimmer
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What is the genus of jackrabbits and hares? describe them.
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Lepus, better runners and open habitats, larger than rabbits, longer ears and hind legs, some molt white pelage in fall and brown pelage in spring; no maternity nest, young are precocial, leave birth area in 24 hours
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