marsupialia, lagomorpha, and insectivora
DESCRIPTION
Marsupialia, Lagomorpha, and Insectivora. Marie Rhodes. Marsupials. Typically has a pouch Differs from placental mammals in reproductive traits Embryo is born at early stage of development (4-5 weeks). A Marsupial Near You. Virginia Opossum Didelphis virginiana Nocturnal Solitary - PowerPoint PPT PresentationTRANSCRIPT
Marsupialia, Marsupialia, Lagomorpha, and Lagomorpha, and
InsectivoraInsectivora
Marie RhodesMarie Rhodes
MarsupialsMarsupials
Typically has a pouchTypically has a pouch Differs from placental Differs from placental
mammals in mammals in reproductive traitsreproductive traits
Embryo is born at Embryo is born at early stage of early stage of development (4-5 development (4-5 weeks)weeks)
A Marsupial Near YouA Marsupial Near You
Virginia OpossumVirginia OpossumDidelphis virginianaDidelphis virginiana
NocturnalNocturnal SolitarySolitary OmnivorousOmnivorous AdaptableAdaptable Typically lives 2-4 Typically lives 2-4
yearsyears
LagomorphaLagomorpha
Resemble rodentsResemble rodents HerbivoresHerbivores Four upper incisorsFour upper incisors Males scrotum in Males scrotum in
front of penisfront of penis Penis has no bonePenis has no bone
Eastern CottontailEastern CottontailSylvilagus floridanusSylvilagus floridanus
Females are Females are bigger than malesbigger than males
Can have up to Can have up to seven litters a seven litters a yearyear
Litters usually Litters usually consist of three consist of three youngyoung
Appalachian CottontailAppalachian CottontailSylvilagus obscurusSylvilagus obscurus
Found in dense Found in dense conifer and conifer and deciduous forests deciduous forests at upper elevationsat upper elevations
Only cottontails Only cottontails known to feed known to feed heavily on conifer heavily on conifer needlesneedles
Snowshoe HareSnowshoe HareLepus americanusLepus americanus
Found in variety of Found in variety of habitatshabitats
NocturnalNocturnal Can have two to Can have two to
five litters per yearfive litters per year Populations Populations
fluctuate radically fluctuate radically over ten year cyclesover ten year cycles
American PikaAmerican PikaOchotona princepsOchotona princeps
Males and females Males and females have same size have same size individual territoriesindividual territories
Spend most of the Spend most of the day observing their day observing their surroundingssurroundings
Young are Young are independent a independent a mouth after birthmouth after birth
InsectivoraInsectivora
Long pointed Long pointed snoutssnouts
Sharp teethSharp teeth Eyes are usually Eyes are usually
small to absentsmall to absent Small to medium Small to medium
sizedsized
Shrews in PAShrews in PA• Long-tailed Shrew (right)
Sorex dispar• Smokey shrew (bottom right)
Sorex fumeus• Water Shrew (below)
Sorex palustris
Shrews in PAShrews in PA• Cinereus shrew (left)
Sorex Cinereus
• Northern short-tailed shrew (bottom Left)
Blarina brevicauda• Least shrew (below)
Cryptotis parva
Hairy-tailed MoleHairy-tailed MoleParascalops BreweriParascalops Breweri
Occur in a variety Occur in a variety of habitatsof habitats
Prefers loose soilsPrefers loose soils Eyes are very Eyes are very
smallsmall Have no external Have no external
earsears
Star-nosed MoleStar-nosed MoleCondylura cristataCondylura cristata
22 fingerlike 22 fingerlike appendages appendages surrounding its surrounding its nostrilsnostrils
Used for object Used for object manipulationmanipulation
Good swimmersGood swimmers
HedgehogsHedgehogs
Spines are hollowSpines are hollow OmnivorousOmnivorous NocturnalNocturnal Five toes on front Five toes on front
paws and 4 on paws and 4 on backback