Adaptations Are changes in physical forms or behaviors brought about by natural selection that enable an organism to better survive in its natural habitat. Many adaptations have to do with getting food and oxygen, moving or staying in one place, protection, or living in certain places.
Aquatic Organisms and their adaptations… What adaptations to living in water can be seen on these stream animals? Crayfish Mayfly Burrowing Mayfly
Hard outer “shell” provides protection Hooks on feet anchors in moving water Streamlined shape Gills on the two insects Claws on the crayfish for gathering food and fighting, display Paddle-shaped tail on the crayfish for swimming 1 2 4 Crayfish Burrowing Mayfly Mayfly
What adaptations on these insects are used for getting oxygen? Water Penny Larva Caddisfly Larva Gills – feathery structures on the body
What adaptations on these insects are used for locomotion? Water Strider Paddle shaped feet for “rowing” through the water Very thin legs to walk on top of the water Water Boatman
What adaptations on these animals are used for staying in one place? Blackfly larva Mussel Suction cup Muscular “foot”
What adaptations on these animals are used for gathering food? Siphons water in and out to filter the food Brushes in front of mouth for filtering water
Head of a Dragonfly nymph The lower lip extends out in front of the head and captures prey to bring back to the mouth to eat. It can eat tadpoles and minnows larger than it is. What do you think is the purpose of the lower lip?
How are these fish adapted for locomotion through the water? Streamlined shape Slimy body Fins for stabilizing Strong tail fin for movement
Which of these turtles is the most aquatic? How can you tell? Softshell Turtle Box Turtle Softshell Turtle – streamlined shape, webbed feet Red-eared Slider
What are each of these feet adapted for? Duck Heron Walking on soft mud (like a snow-shoe) Paddling in water (boat oar) Catching and holding slippery fish (cooking tongs) Osprey