Question

1) How can fishing cause expression changes and how can these changes be associated with changes at DNA level?
2) How do changes in gene expression hell fjsh adapt to different selective pressure?
(I have a presentation about this, so it would be very useful if you linked some articles that would help me. Thank you in advance)

Answer 1

A recent study looks to have been done by the University of Turku, Finland, and published in the journal Molecular Ecology...your school library may allow you free access to this journal.

Otherwise, several sites come up with summary articles when you search "how does fishing cause expression changes".