Ch17 Evolution of Species Interactions1.pdf

1 Page

University College Courses
Course Code
Spencer Barrett

This preview shows half of the first page. Sign up to view the full page of the document.
BIO120H © Li| Page 1011 chapter 17: EVOLUTION OF SPECIES INTERACTIONS  biological factors which have shaped adaptations differ from physical factors:  BF stimulate mutual evolutionary responses in the traits of interacting pop.  ex. predators shape prey’s adaptations for escape which shape their own adaptations for pursuit and capture  but adaptations of animals have no reciprocating effect on the envmt (BF)  they foster diversity of adaptations rather than promoting similarity  org. specialize in response to BF  in response to similar stresses, species converge (evolve similar adaptations)  coevolution: the reciprocal evolution in 2 or more interacting species of adaptations selected by their interaction  adaptations in one pop. promote the evolution of adaptations in the other  ex. when a herbivore evolves a way to detoxify a noxious chemical that has evolved in a plant  hyena’s bone-crushing teeth is NOT coevolution  their prey didn’t evolve to resist being eaten by hyenas  when the evolutionary relationship b/w species is antagonistic, the species can be involved in an evolutionary stuggle to increase their own fitness  may result in an evolutionary stalemate where both antagonists continually evolve in response to each other, but the net ou
More Less
Unlock Document

Only half of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.