1 / 28

Rodentia: Gnawing Mammals

Rodentia: Gnawing Mammals. Rodentia Checklist. one pair of upper and lower incisors each enlarged, sharply beveled, ever-growing enamel on outer surface only diastama between incisors and premolars other skull features. Sciuridae: Squirrels. Gray Squirrel Sciurus caroliniensis.

ellie
Télécharger la présentation

Rodentia: Gnawing Mammals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rodentia: Gnawing Mammals

  2. Rodentia Checklist • one pair of upper and lower incisors • each enlarged, sharply beveled, ever-growing • enamel on outer surface only • diastama between incisors and premolars • other skull features

  3. Sciuridae: Squirrels

  4. Gray SquirrelSciurus caroliniensis • melanistic (black) form in some areas • Besides nuts, also eat flowers, bark, buds, bird eggs, insects, carrion

  5. Fox SquirrelSciurus niger • “fox” refers to the reddish color • less arboreal, favors more open habitats

  6. Red SquirrelTamiasciurus hudsonicus • favors evergreens to mixed forests • store unripe cones in middens • also eat bird eggs, mushrooms • loud and vocal

  7. Southern Flying SquirrelGlaucomys volans • more common of the two species • glide rather than powered flight • prefers deciduous woods • diet of fungi, lichens, nuts, seeds, bird eggs, sap

  8. Northern Flying SquirrelGlaucomys sabrinus • prefer coniferous woods • doesn’t hibernate • eat hypogenous fungi • susceptible to nematode parasite, Stongyloides robustus • G. volans is less susceptible

  9. Eastern ChipmunkTamias striatus • Facial stripes • Cheek pouches • 1 in east, 21 in west

  10. WoodchuckMarmota monax • are a ground squirrel • AKA groundhog, whistle-pig • true hibernators • burrow up to 30’

  11. CastoridaeBeaverCastor canadensis • our largest rodent • perhaps most important animal in settling of North America • tail slapping threat behavior • can remain submerged 15 minutes

  12. Cricetidae:Native Rats, Mice & Voles Largest family of NA mammals

  13. MuskratOndatra zibethicus • feed on cattails and aquatic plants • actively scent-mark territories, hence the name • domed huts • tapered, hairless, scaly tail differs from beaver’s flat tail

  14. Deer MousePeromyscus maniculatus

  15. White-footed MousePeromyscus leucopus

  16. Eastern WoodratNeotoma floridana

  17. Southern Red-backed VoleClethrionomys gapperi

  18. Meadow VoleMicrotus pennsylvanicus

  19. Rock VoleMicrotus chrotorrhinus

  20. Woodland VoleMicrotus pinetorum

  21. Southern Bog LemmingSynaptomys cooperi

  22. Muridae: Old World Rats & Mice

  23. Norway Rat (I)Rattus norvegicus

  24. House Mouse (I)Mus musculus

  25. Zapodidae: Jumping Mice Meadow Jumping MouseZapus hudsonius

  26. Woodland Jumping MouseNapaeozapus insignis

  27. Erethizontidae: Porcupines PorcupineErethizon dorsatum • quills are modified hairs with barbed tip • few predators except Fisher • in winter, feed on inner bark of trees • more varied diet in summer

More Related