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UT Knoxville FWF 250 - Snake Conservation
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FWF 250 1st Edition Lecture 17Outline of Last Lecture I. The Effect of Wildlife on the EconomyOutline of Current Lecture I. Snake ConservationCurrent Lecture Snake Conservation- Snakes have either keeled scales or smooth scales. Keeled scales have a raised ridge. Sometimes, dorsal scales can be double-keeled and can have two ridges.- Scales are made up of keratin.- Snakes are considered ectotherms.- Snakes shuttle to different places to maintain body temperature.- Order: Squamata- Suborder: Serpentes- Snakes do not have moveable eyelids.- Snakes in TN are separated into two different families. They are Colubridae and Viperidae.- Snakes have been the focus of very little conservation effort.- Many people believe “the only good snake is a dead snake.”- About 40% of animal communities within a forested environment is linked to a large broken log. Fungi and invertebrates (insects) break down this log. Termites are one type for example. It attracts small animals, such as moles, mice, shrews, and voles. o Shrews have a high metabolism. They are fast and athletic.o Voles eat mostly plants.o Moles eat earthwormso Mice are omnivores.- Small animal communities attract black bears, woodpeckers, foxes, and bobcats.- Snakes are also attracted to these small animals- Size: Snakes are long and narrow, which causes overestimation of their lengths.- Speed: Their manner of movement is lateral undulation. This gives the illusion of traveling faster than normal. Few can travel over six miles per hour. The Eastern Coachwhip is the fastest snake in the U.S.- Venomous: Only about 10% of snakes are venomous. Only four species out of thirty are venomous. Venomous snakes have vertical slits for eyes. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is bestused as a supplement to your own notes, not as a substitute.- Aggressiveness: Snakes are more likely to escape than be aggressive. Snakes like to investigate, not chase.- Myths and the Truth:o Charming Snakes: Snakes cannot hypnotize their prey.o Hoop Snakes: Snakes cannot bite their tail and roll downhill.o Poisonous Breath: Snakes don’t have poisonous breath. Hognose snakes tend to play dead when being harassed.o Rattles: Rattlesnakes add a new rattle each time that they shed their skin, not each year.o Striking: Snakes can strike from any position, not just the coil position. The can even bite when they are dead because of nerves.o Sucking Milk: Snakes can’t suck milk from livestock.- Snakes can go a long time without eating because they are able to shut down their small intestines.- Pit Vipers are venomous. They can regrow fangs if one breaks.- Snake Bite?o Kill the snake, and take it for identification.o Call 911 immediately.o Carry a suction device with you (commercial snake bite kit). Use it ASAP.o Do not make any incisions. Do not let doctors do this either.o Stay calm and do not run.o Immobilize the spot where bitten, and keep it below the heart.o Apply bandage, wrapped 2-4 inches above the bite.- To sex snakes, you can probe the cloaca. Males have it about 8 scales deep towards the tail, while females have it about 2-4 scales deep towards the tail.- Herpetologist is one who studies amphibians and reptiles, including snakes. These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a


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UT Knoxville FWF 250 - Snake Conservation

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