@inproceedings{ fonteneau_species_2008,
  address = {Port Moresby, Papua New Guinea},
  title = {Species composition of tuna catches taken by purse seiners},
  volume = {{ST}-{WP}-2},
  abstract = {This paper makes a presentation of the multi-species size sampling that have been conducted in the Indian and Atlantic oceans since the early eighties allowing to estimate the average species and size composition of tuna landings by pole and line vessels and purse seiners. The paper further discusses the structural biases that are expected when sampling the complex mixture of sizes and species that are observed on {FAD} schools, when done by observers. It advocates the necessity to sample these catches using large scale port multispecies sampling schemes. The data processing of these multi species samples is also discussed, based the methods developed by {EU} scientists in the Atlantic and Indian oceans. The paper recommends promoting a unified sampling scheme of
purse seine landings in the {WCP} and a unified data processing of these size and species samples. Based on the Atlantic and Indian oceans species sampling, the implementation would necessitate to develop permanent teams of species and size samplers in selected major ports
were tunas are transhipped or landed. The paper recommend to process all the {WCP} historical data of species composition using this new method, and to promote as soon as possible in the {WCP} such optimized
sampling scheme .},
  publisher = {{WCPFC}},
  author = {Fonteneau, Alain},
  month = {August},
  year = {2008},
  note = {{ACTI}}
}

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