@article{fdi:010066213,
  title = {{D}ata-limited population-status evaluation of two coastal fishes in southern {A}ngola using recreational catch length-frequency data},
  author = {{B}eckensteiner, {J}. and {K}aplan, {D}avid and {P}otts, {W}. {M}. and {S}antos, {C}. {V}. and {O}'{F}arrell, {M}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}xcessive truncation of a population's size structure is often identified as an important deleterious effect of exploitation, yet the effect on population persistence of size-structure truncation caused by exploitation is often not quantified due to data limitations. {I}n this study, we estimate changes in eggs per recruit ({EPR})using annual length-frequency samples over a 9 year period to assess persistence of the two most important recreational fishes in southern {A}ngola: west coast dusky kob ({A}rgyrosomus coronus) and leerfish ({L}ichia amia). {U}sing a length-and age-structured model, we improve on an existing method to fit this type of model to length-frequency data and estimate {EPR}. {T}he objectives of the methodological changes are to add flexibility and robustness to the approach for assessing population status in data-limited situations. {R}esults indicate that dusky kob presents very low levels of {EPR} (5%-10% of the per recruit reproductive capacity in the absence of fishing) in 2013, whereas large inter-annual variability in leerfish estimates suggest caution must be applied when drawing conclusions about its exploitation status. {U}sing simulated length frequency data with known parameter values, we demonstrate that recruitment decline due to overexploitation leads to overestimation of {EPR} values. {C}onsidering the low levels of {EPR} estimated for the study species, recruitment limitation is not impossible and true {EPR} values may be even lower than our estimates. {I}t is, therefore, likely that management action, such as the creation of {M}arine {P}rotected {A}reas, is needed to reconstitute the west coast dusky kob population.},
  keywords = {{ANGOLA}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {11},
  numero = {2},
  pages = {e0147834 [29 p.]},
  ISSN = {1932-6203},
  year = {2016},
  DOI = {10.1371/journal.pone.0147834},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066213},
}