Understanding and accounting for pot catchability of the spiny lobster, Panulirus cygnus, and implications for stock assessment

Emma-Jade Tuffley

Research output: ThesisDoctoral Thesis

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Abstract

This thesis investigates non-stationary catchability in the independent breeding stock surveys (IBSS) of the Western Rock Lobster, Panulirus cygnus. This research identified a strong influence of biological and behavioural factors on the catchability of P. cygnus, while the impact of environmental factors, swell and temperature, were weaker and more varied. In a simplified stock assessment scenario, failing to account for these factors impacted the interpretation and use of catch rate data from the IBSS. This study highlights the importance of periodically examining the assumptions underlying fisheries stock assessment and the value of testing preconceptions.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Langlois, Tim, Supervisor
  • How, Jason, Supervisor
  • de Lestang, Simon, Supervisor
Thesis sponsors
Award date17 Nov 2023
DOIs
Publication statusUnpublished - 2023

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