Adult body size correlates strongly with fitness, but mean body sizes frequently differ among conspecific populations. Ultimate, fitness-based explanations for these deviations in animals typically focus on community-level or physiological processes (e.g., competition, thermoregulation). However, proximate mechanisms underlying adaptive body size adjustments remain poorly understood.

*Reviewer for this publication Sea Stewards Handbook – Learn About Issues Affecting Our Ocean and What You Can Do to Help This handbook was developed to support the Sea Stewards program. Through this program, underserved students, persons with disabilities, and veterans spend a day recreating on the ocean and learning about what it means to be an ethical angler and a marine steward.