Presentation is loading. Please wait.

Presentation is loading. Please wait.

Aposematic coloration. crypsis Effect of the moth (Cactoblastis cactorum) on prickly pear cactus (Opuntia stricta) before after.

Similar presentations


Presentation on theme: "Aposematic coloration. crypsis Effect of the moth (Cactoblastis cactorum) on prickly pear cactus (Opuntia stricta) before after."— Presentation transcript:

1 Aposematic coloration

2 crypsis

3 Effect of the moth (Cactoblastis cactorum) on prickly pear cactus (Opuntia stricta) before after

4

5

6

7

8 Percentage of various trees browsed by deer Horton 1964

9 Monarch butterfly Viceroy butterfly

10 bumblebee Cicada killer Bald faced hornet robberfly Hummingbird moth Syrphid fly

11 Coral snake milksnake kingsnake

12 katydid Phrynosoma cornutum Horned lizard Phyllodes imperiais Fruit piercing moth

13 Walking stick

14

15

16 Daphnia and yeast Yeast cells/ml Feeding rate Type 1 response

17 Here consumption is limited by search time Here consumption is limited by handling time Here consumption is limited by a combination of search and handling time Consumption rate Food density Type 2 response

18

19

20 1) guppies were fedtubificid worms and fruit flies in varying proportions Numberexpected (if no preference) Proportion of tubificid in diet Proportion of tubificids available Here guppies were feeding at the top of the tank Here guppies start feeding at bottom oftank Type 3 response

21 2)water bugs fed mayflies in varying numbers Number expected Percentage of mayflies in diet Percentage of mayflies available Waterbug learns how to catch prey (becomes more successfu l) Type 3 response

22

23 r N High harvest quota Medium harvest quota Low harvest quota Nm


Download ppt "Aposematic coloration. crypsis Effect of the moth (Cactoblastis cactorum) on prickly pear cactus (Opuntia stricta) before after."

Similar presentations


Ads by Google