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Corn Snake

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by

Emilie Janes

on 24 April 2013

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Transcript of Corn Snake

Pantherophis guttatus guttatus Corn Snake Kingdom: Phylum: Class: Order: Family: Genus: Species: Animalia Chordata Reptilia Squamata Colubridae Pantherophis Pantherophis guttatus guttatus Taxonomy Etymology "gutta" - dappled, spotted "panthera" - spotted cat, leopard "ophis" - snake Range Corn snakes can be found throughout the eastern and southern central United States, and into northern Mexico.

"Species of Special Concern" in the Florida Keys Habitat -prefer deciduous forests, rocky regions, fields, and grassy areas -temperate and terrestrial -savanna/grassland/forest biomes -can be found in suburban areas, and mountainous regions up to 1800 feet in elevation Characteristics -docile and non-venomous
-large spots on the dorsal side of the body
-black and white checkered pattern on the ventral side of the body
-color tends to be brown or red-orange (can be grey or yellow depending on region

-900 grams & range from 3 to 5 feet long
-shorter snakes in warmer climates such as Florida
-indeterminate growth
-sexual dimorphism -life span:
up to 10 years in the wild
15-20 years in captivity Characteristics -corns cannot metabolically produce their own heat
-heterothermic
-behavioral thermoregulation

-in colder climates, Corn Snakes hibernate during the winter months

-in warmer climates, corns retreat into crevices and logs until it is warm enough to bask in the sun Diet -carnivores
-do not eat often (once every few days)

-mainly eat rodents and other small mammals
-also have been noted to eat other smaller corn snakes

-in Florida: diet consists of smaller reptiles and amphibians

-climb trees and eat eggs from unguarded nests Feeding -constrictors
-strike and bite their prey in order to maintain a grip
-coil around the prey, suffocating it
-eat their prey whole Predation -corns have few natural predators
-larger snakes prey on Corn Snakes
-Eastern Kingsnakes
-Black Racers -camouflage
-young corns hide under bark -polygynous
-males and females locate one another with pheromones
-males fight for dominance and the right to breed

-reach sexual maturity at 16-18 months (both sexes)
-breeding season from March to May (year-round in the south)
-corns breed once annually Reproduction -gestation lasts one to two months
-average of 10-15 eggs
-two months of incubation at 27.8 degrees Celsius
-hatch between July and September

-neonates
-many are not able to break through the leathery egg shell
-no parental care
-baby corns eat small lizards and tree frogs Behavior -hunting and basking

Ecdysis
-become aggressive and reclusive
-decreased appetite
-soak
-rub their noses against rocks to loosen the shed
-slither out of the molt in one piece

-diurnal
-crepuscular in warmer climates
-hibernate from October to April Anatomy -teeth are positioned to snag and pull in
-hinged jaw can swing open to 150°
-trachea extends under their prey so that can breath

-linear arrangement of organs
-digestive track runs almost the entire length of the body
-stretchable Hearing -corns do not have outer ears
-sense vibrations
-sound is transferred
muscle - ear bone - vibrations sent to inner ear - brain Sight -do not have great vision
-cannot see colors Smell -when a snake flicks its tongue, odor particles are transferred to two fluid-filled sacks at the roof of the mouth
-Jacobson's Organs
-no sense of taste

-a snake does not have a diaphragm
-circulate air by narrowing and widening rib cage
-after one "cycle" they experience apnea that can last up to a few minutes before the start of a new cycle Color Morphs http://iansvivarium.com/morphs/species/elaphe_guttata/#Wild Types and Localities References http://www.cornsnake.co.uk/ http://animaldiversity.ummz.umich.edu/accounts/Pantherophis_guttatus/
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