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Lizardshaveeyelidsandear holesthatsnakesdonot

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Unformatted text preview: nd moves chemicals in the air to the organ Extremely movable jaw Green Anole Rough Green Snake Scarlet Kingsnake Eastern Diamondback Rattlesnake Lizards Lizards Extremely variable and diverse Many endemic species Leg­less Lizards Five­lined Skink Glass Lizards or Jointed Snakes Lizards have eyelids and ear holes that snakes do not Slender Glass Lizard Fence Lizard Ground Skink Snakes Snakes 37 species in North Carolina 6 venomous species Eastern Diamondback Rattlesnake ­ venomous Scarlet Kingsnake – non­venomous Copperhead, Cottonmouth, Coral Snake, Timber Rattlesnake, Eastern Diamondback Rattlesnake, and Pigmy Rattlesnake Most species are non­ venomous Ringneck Snake – non­venomous Black Rat Snake – non­venomous All lack legs Lack ear openings Snakes Snakes Hear vibrations through the ground Shed their skin to grow Either lay eggs or give birth to live young Black Racer Redbelly Watersnake Eastern Hognose Snake Ringneck Snake Coachwhip Snake Feeding Snake Feeding Entirely carnivorous Swallow prey whole Can eat prey much larger than themselves Some use venom to immobilize prey Some constrict their prey Some actively forage for prey Some sit and wait for prey to approach them Eastern Diamondback Rattlesnake eating a Cottontail Rabbit Scarlet Kingsnake eating a Green Anole Snake Defense Mechanisms Snake Defense Mechanisms Crypsis: Staying camouflaged When detected: Flee, musk, gape, rattle When these do not work, snakes may strike This occurs only when a snake feels threatened and has no other option to protect itself Cottonmouth Eastern Diamondback Rattlesnake Eastern Hognose Snake Conservation Conservation Many amphibians are in decline 32% of amphibians endangered versus 12% of birds or 23% of mammals 43% of amphibian populations are declining Few populations are known to be increasing Grey Tree Frog Red Salamander Eastern Kingsnake Causes of Decline Causes of Decline Habitat destruction Disease Pollution Over­exploitation Climate change Invasive species How many are human caused? What can you do? What can you do? Enjoy finding and observing amphibians and reptiles Don’t keep wild amphibians and reptiles as pets Don’t kill snakes Make sure you know a poisonous species looks like before handling snakes, and NEVER touch or threaten a poisonous snake Don’t release any amphibian or reptile pet into the wild Questions? Questions? Corn Snake...
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This document was uploaded on 02/23/2014 for the course CHEM 107 at VCU.

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