Jan 13 Handout - Behavioral Ecology of Insects Entomology...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1/12/2012 1 Behavioral Ecology of Insects Entomology 104 An Experiment in Behavioral Ecology • The Peppered Moth, Biston betularia • Mid 19th century Lepidopterists noted increase in melanic (black) forms of many (>70) species of moths. • Industrial pollution resulted in trees with dark-colored trunks because the likens died. • Suspected that differential predation by birds, due to differential crypsis was responsible.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1/12/2012 2 Typical : light colored with black markings. Difficult to see on tree trunks covered with likens. Carbonaria : dark colored. Difficult to see on dark colored surfaces Insularia : intermediate coloring. Three Forms of B. betularia Existed Naturally
Background image of page 2
1/12/2012 3 Classic Experiments by Kettlewell 1907-1979 Trained as a physician Interest in natural history and genetics
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
1/12/2012 4 The Experiment(s) • Hypothesis: More melanic forms of B . betularia are present in industrial areas because birds eat the light colored ones.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 9

Jan 13 Handout - Behavioral Ecology of Insects Entomology...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online