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The Rodents ORDER RODENTIA Teeth • • • • Incisors Diastema Molars Malocclusion Nocturnal Whiskers Prolific breeders Pests Food source Porcupette 1/year History Vermin control $ Scientific research Diseases Food Fur trade items Allegheny Wood Rat – Bubonic plague Typhus Hanta fever endangered species of rodent in PA PARTNER SPECIES S and Muskrats Mink (Mustela vison) • Mustelidae family • Semi-aquatic Hearing Sight Smell Predator - opportunistic feeder • • • • • • • • • • • • • Muskrats Mice Rabbits Shrews Fish Frogs Crayfish Insects Snakes Waterfowl Birds Eggs Domestic poultry Dens • • • • • • • Woodchuck tunnels Hollow logs Vacant muskrat lodges Stone piles Large tree roots Near water More than one entrance Young Delayed implantation 2-7 young 3 ½” long blind, hairless 2 weeks, furred 5 weeks eyes open 6-7 weeks forage & learn to hunt w/ mom Muskrats (Ondatra zibethica) • Musk • Rodent • #1 Furbearer in USA • Nicknames • Marsh hare • Musk beaver Body Characteristics • • • • • • • • Rudder, propulsion, prop Webbed hind feet Forefeet agile, small, claws Underfur and guard hairs for insulation Weigh about 3 pounds Excellent swimmers Hold breath 15 minutes Special lips Diet - herbivores • • • • • • aquatic plants legumes,’ grasses, grains, garden crops animal protein crayfish mussels fish frogs carrion muskrat carcasses Lodges Underwater entrance Rooms above water level Several rooms/tunnels Air vent central room Marshland channels Habitat change Keystone species 2 3 f e e t h i g h 8-10 feet across Young Large litters Stable population Up to 4 litters/year Musk trails • • • • 5-8 Blind Furless Weaned & fully furred 1 month Predators #1 Predator – Mink Foxes Great-horned owl Hawks Snapping turtles
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