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Behavior and Conservation

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.

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Behavior and Conservation

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  1. Behavior and Conservation Marine Turtles

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

  3. Nesting Behavior • A few weeks after mating:

  4. Nesting Behavior Egg pit

  5. Arribada

  6. Growth and Development • Shell protects embryos from desiccation

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

  8. Growth and Development • Marine Turtles Male Female

  9. Growth and Development • Caruncle

  10. Migrations • Macrogeographic migrations • Loggerhead • http://www.seaturtle.org/sandbox/animalmap.html

  11. Migrations • Green Turtle Ascension Island

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

  13. 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

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

  15. TED’s • Turtle Excluder Device

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