Behavior and Conservation Marine Turtles. Reproduction Mate in the water Appear to rely on visual cues for species and sex recognition Oviparous.

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Presentation transcript:

Behavior and Conservation Marine Turtles

Reproduction Mate in the water Appear to rely on visual cues for species and sex recognition Oviparous

Nesting Behavior A few weeks after mating:

Nesting Behavior Egg pit

Arribada

Growth and Development Shell protects embryos from desiccation

Growth and Development Sex determined by temperature 3 Types A – most crocs and some lizards B – many turtles C – crocs, lizards and some turtles

Growth and Development Marine Turtles MaleFemale

Growth and Development Caruncle

Migrations Macrogeographic migrations Loggerhead p.html

Migrations Green Turtle Ascension Island

Migrations Navigational Cues Earth’s magnetic field Water-borne Auditory Wind-borne

Conservation Many are threatened and endangered: Loggerhead = Threatened Green = FL and P. coast of Mexico Endangered; all others threatened Hawksbill = Endangered Kemp’s = Endangered Leatherback = Endangered

Conservation Management and Protection Beach habitat protection Lighting ordinances End plastic pollution

TED’s Turtle Excluder Device