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Fish Ecology, Evolution, and ExploitationA New Theoretical Synthesis$
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Ken H. Andersen

Print publication date: 2019

Print ISBN-13: 9780691192956

Published to Princeton Scholarship Online: January 2020

DOI: 10.23943/princeton/9780691192956.001.0001

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Trait-Based Approach to Fish Ecology

Trait-Based Approach to Fish Ecology

(p.150) Chapter Nine Trait-Based Approach to Fish Ecology
Fish Ecology, Evolution, and Exploitation

Ken H. Andersen

Princeton University Press

This chapter proposes a shortlist of fish “master” traits and connects these traits to classic life-history strategy thinking. First, it sets the historical background for the current state-of-the-art thinking about fish life history strategies. From there, the chapter explains that the main axes of variation between fish species can be captured by three traits: the asymptotic size; the growth rate coefficient; and the adult–offspring mass ratio strategy. Together, these three traits determine the central demographic parameters: somatic growth rate, investment in reproduction, age at maturation, survival to maturation, mortality, and so on, and from there follows population-level quantities like population growth rate, population structure, fitness, and selection responses. The chapter concludes with a reflection on the trait-based approach and compares it to other methods of assessment.

Keywords:   fish ecology, fish life history, asymptotic size, growth rate coefficient, mass ratio, fish growth rate, fish reproduction, fish maturation, fish mortality

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