As Atlantic Salmon (Salmo Salar) Make the Developmental Transition from Parr

Multiple Choice

As Atlantic salmon (Salmo salar) make the developmental transition from parr to smolt, a number of hormones, such as prolactin, growth hormone, cortisol, and thyroid hormones, interact with a variety of environmental cues to produce changes in

A) body coloration and markings.
B) osmoregulation to support life in freshwater vs. life in saltwater.
C) territoriality and feeding styles.
D) all of the above.