@article{fdi:010049026,
  title = {{B}ayesian state-space modelling of the {D}e {L}ury depletion model : strengths and limitations of the method, and application to the {M}oroccan octopus fishery},
  author = {{R}obert, {M}arianne and {F}araj, {A}. and {M}c{A}llister, {M}. {K}. and {R}ivot, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he strengths and limitations of a {B}ayesian state-space modelling framework are investigated for a {D}e {L}ury depletion model that accommodates two recruitment pulses per year. {T}he framework was applied to the {M}oroccan fishery for common octopus ( {O}ctopus vulgaris) between 1982 and 2002. {T}o allow identifiability, natural mortality ( {M}) and the recruitment rhythm were fixed, and the variance of both process and observation errors were assumed to be equal. {A} simulation-estimation ( {SE}) approach was derived to test the performance of the method. {I}f the data showed responses to harvest, the estimates of the most important figures, i.e. the initial abundance and the second recruitment pulse, were accurate, with relatively small bias. {R}esults confirm that greater depletion yields smaller bias and uncertainty and that inferences are sensitive to the mis-specification of {M}. {T}he 21 depletion series in the {M}oroccan dataset were jointly treated in a hierarchical model including random walk to capture the systematic fluctuations in estimates of catchability and initial abundance. {T}he model provides estimates of the annual recruitment and monthly octopus population size. {T}he recruitment estimates could be used to investigate the link between recruitment variability and the coastal {N}orth {A}frican upwelling regime to improve understanding of the dynamics and management of octopus stocks.},
  keywords = {{B}ayesian ; {D}e {L}ury depletion model ; hierarchical model ; {MCMC} ; octopus ; recruitment ; state-space modelling},
  booktitle = {},
  journal = {{I}ces {J}ournal of {M}arine {S}cience},
  volume = {67},
  numero = {6},
  pages = {1272--1290},
  ISSN = {1054-3139},
  year = {2010},
  DOI = {10.1093/icesjms/fsq020},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049026},
}