Food deprived largemouth bass (Micropterus salmoides) are inactive and stressed, but do not show changes in lure inspections

Toniann D. Keiling, Cory D. Suski

Research output: Contribution to journalArticle

Abstract

Coping style traits, including physiology and behavior, can be used to predict if fish are vulnerable to capture by hook-and-line angling. Typically, fish with proactive coping styles are selectively captured, but effects of environmental influences, such as food availability, on the completion of each step leading to a successful angling capture (i.e., activity rates, encountering a lure, lure inspection, lure-striking, and ingestion) have not been quantified. Therefore, the objective of this study was to quantify the effects among activity behavior, stress (cortisol) responsiveness, and food availability on lure inspection behaviors of largemouth bass. No relationships were found between activity, stress responsiveness, and food availability to determine lure inspections. However, food deprivation decreased activity rates and increased baseline cortisol concentrations of largemouth bass. Additionally, after feeding treatments, fish with low baseline cortisol concentrations were more likely to inspect lures in both the fed and food deprived treatments. Results further discuss the implications of study findings to help fisheries managers predict the evolutionary impacts of angling.

Original languageEnglish (US)
Article number110556
JournalComparative Biochemistry and Physiology -Part A : Molecular and Integrative Physiology
Volume238
DOIs
StatePublished - Dec 2019

Keywords

  • Activity behavior
  • Angling vulnerability
  • Cortisol responsiveness
  • Food availability
  • Novel object inspections

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Molecular Biology

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