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Starfish Reproduction
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Transcript
Types of Reproduction
- Lowkey hermaphrodite characteristics
- Asexual- fragmentation
- Sexual- spawning
The Beauty of Spawning
- time of day, year
- chemical secretion
- Bipinnaria larvae grow by eating other plankton, free swimming with cilia (grow as plankton) (bilateral)
- Become brachiolaria larvae (radial)
- Brooding (on female, on ground, polar)
Bipinnaria larvae of a starfish
Brachiolaria larvae of a starfish
Introduction to Starfish
Starfish Reproduction
- over 1,500 species
- water vascular system
- exoskeleton
- regenerate vs self-release
- no brain, just nervous system
- eat bivalves, mollusks
Starfish Eating Mollusk
Sacha Franks and Isabella Serratore
Fragmentation
- Leg and part of core
Conditions for Reproduction
- All year long
- All types of environments
Artificial Habitat Conditions
- Same as the ocean
- 35 ppt
- 8 pH
- Post spawning, phytoplankton supplments in water
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