@article{fdi:010085173,
  title = {{U}nintended effects of single-species fisheries management},
  author = {{T}olotti, {M}. and {G}uillotreau, {P}. and {F}orget, {F}abien and {C}apello, {M}anuela and {D}agorn, {L}aurent},
  editor = {},
  language = {{ENG}},
  abstract = {{E}cosystem-based management is widely recognized as the path to achieve sustainability of ecosystem services. {T}una {F}isheries {M}anagement {O}rganizations have incorporated an ecosystem approach into their mandate, but their decision-making process essentially relies on individual stock assessments. {T}his study investigates possible unintended consequences of management measures that primarily focus on single target species. {I}n 2016, the {I}ndian {O}cean {T}una {C}ommission ({IOTC}) adopted a plan for rebuilding yellowfin tuna stock. {W}e examined the impacts that this measure might have had on the fishing strategy of purse seine fleets and on silky shark mortality, their main elasmobranch bycatch. {T}he economic dimension of this possible ecological impact was also explored. {L}ogbook and observer data from the {F}rench fleet, coupled with {IOTC} data from {S}pain, {S}eychelles and {M}auritius, were used. {A}fter the implementation of the measure, an increase on the number of fish aggregating device ({FAD}) sets and an expansion of the fishing effort were observed. {T}hese resulted in a 35% increase on silky shark bycatch for the {F}rench fleet and a 18% increase for all fleets combined. {B}ased on the estimated catches, the mean forgone consumptive value of silky shark bycatch was evaluated at {US}$ 1.6 million. {T}aking the conservation value into account, the social cost of this forgone ecosystem service could increase up to {USD} 14 million. {T}his work is a first exploration into to the socioeconomic dimension of trade-offs between the use of {FAD}s in tuna purse seine fisheries and shark bycatch and can be applied to other {FAD}-associated species.},
  keywords = {{T}ropical tuna fisheries ; {F}ish aggregating devices ({FAD}s) ; {B}ycatch ; {S}ilky shark ; {E}cosystem approach to fisheries ({EAF}) ; {I}ndian {O}cean ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{E}nvironment {D}evelopment and {S}ustainability},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[24 ]},
  ISSN = {1387-585{X}},
  year = {2022},
  DOI = {10.1007/s10668-022-02432-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085173},
}