Sea Turtles Flashcards
Besides _______, they are the only other reptiles in water
Sea snakes
Lived…
200 million years… Changed little
What is the upper part of the shell
Carapace
Lower portion of shell
Plastron
Keratinous soutes
Scales that cover the carapace
What happens when temps go below 41 degrees
Can be lethal
Loggerhead
Caretta caretta
Hawksbill
Eretmochelys imbricata
Leatherback
Dermochelys coriacea
Kemps Ridley
Lepidochelys kempi
Olive Ridley
Lepidochelys olivacea
Green turtle
Chelonia Mydas
Black turtle
Chelonia agassizi
Australian flatback
Natatar depressus
What is the least threatened turtle
Olive Ridley
Fibropapillomas
Tumor growths that cover eyes and make it hard to find food
What is fibropapillomas caused by
Parasites, increased temps, radiation, pollution
Juveniles grow..
.2-.4 inches per month
Adults grow..
13mm/year
Gender is determined by..
(TSD) temperature
Humans are #1 threat… What do we use them for?
Decorations, food, oil for lamps, aphrodisiacs
What is found in their heads?
Magnetite
Hawksbill eretmochelys
- most tropical
- feed on sponges
- prefer to nest alone
- avg 150 eggs
Natatar depressus facts
Limited range to Australia, produce 1/2 amount of eggs, females larger than males, medium size (156 lbs)
Black turtles facts
(Chelonia agassizi)
- steep carapace
- only found in Galapagos
- mature at 15-20 years
- hatchlings about size of half dollar
Green turtle facts
(Chelonia Mydas)
- in FL avg. 3.3 feet and 303lbs
- mature at 15-20 years
- found all over world
- lack vitamin d
- affected by fibropapillomas
Leatherback (dermochelys) facts
- grows larger, dives deeper
- largest 800lbs, 10 ft head to tail
- 7 narrow ridges
- black with white spots
- nest 4 to 10 times per season
- feed on jellyfish
- can dive 3,300 ft
