Marsupialia, Lagomorpha, and Insectivora

1
Marsupialia, Lagomorpha, and Insectivora

• Marie Rhodes

2
Marsupials

• Typically has a pouch
• Differs from placental mammals in reproductive
  traits
• Embryo is born at early stage of development (4-5
  weeks)

3
A Marsupial Near You

• Virginia Opossum
• Didelphis virginiana
• Nocturnal
• Solitary
• Omnivorous
• Adaptable
• Typically lives 2-4 years

4
Lagomorpha

• Resemble rodents
• Herbivores
• Four upper incisors
• Males scrotum in front of penis
• Penis has no bone

5
Eastern CottontailSylvilagus floridanus

• Females are bigger than males
• Can have up to seven litters a year
• Litters usually consist of three young

6
Appalachian CottontailSylvilagus obscurus

• Found in dense conifer and deciduous forests at
  upper elevations
• Only cottontails known to feed heavily on conifer
  needles

7
Snowshoe HareLepus americanus

• Found in variety of habitats
• Nocturnal
• Can have two to five litters per year
• Populations fluctuate radically over ten year
  cycles

8
American PikaOchotona princeps

• Males and females have same size individual
  territories
• Spend most of the day observing their
  surroundings
• Young are independent a mouth after birth

9
Insectivora

• Long pointed snouts
• Sharp teeth
• Eyes are usually small to absent
• Small to medium sized

10
Shrews in PA

• Long-tailed Shrew (right)
• Sorex dispar
• Smokey shrew (bottom right)
• Sorex fumeus
• Water Shrew (below)
• Sorex palustris

11
Shrews in PA

• Cinereus shrew (left)
• Sorex Cinereus
• Northern short-tailed shrew (bottom Left)
• Blarina brevicauda
• Least shrew (below)
• Cryptotis parva

12
Hairy-tailed MoleParascalops Breweri

• Occur in a variety of habitats
• Prefers loose soils
• Eyes are very small
• Have no external ears

13
Star-nosed MoleCondylura cristata

• 22 fingerlike appendages surrounding its nostrils
• Used for object manipulation
• Good swimmers

14
Hedgehogs

• Spines are hollow
• Omnivorous
• Nocturnal
• Five toes on front paws and 4 on back

15
(No Transcript)