@article{fdi:010094397,
  title = {{R}ates of entanglement inferred from scarring prevalence of humpback whales photographed in {US} {O}regon waters},
  author = {{D}erville, {S}ol{\`e}ne and {C}alambokidis, {J}. and {P}alacios, {D}. {M}. and {T}ackaberry, {J}. and {H}ayslip, {C}. and {F}lynn, {K}. and {N}ew, {L}. and {B}aker, {C}. {S}. and {S}teel, {D}. and {M}artien, {K}. {K}. and {M}oore, {J}. {E}. and {L}auf, {M}. and {W}ickman, {L}. and {W}all, {A}. and {N}ewell, {C}. and {T}orres, {L}. {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{E}ntanglements in fishing gear are a significant threat to cetaceans worldwide and a concern for large whales in {US} waters. {Y}et, entanglement events are infrequently observed, and their lethal and sublethal impacts are likely underestimated. {P}hotographic analysis of wrapping scars on whales shows promise to better assess entanglement. {H}ere, we analyzed scars on 571 individual humpback whales photographed in {O}regon, {USA}, waters (2005-2023). {W}e scored 1533 photos of the tailstock and fluke regions for evidence of prior entanglement. {W}e found that scarring prevalence varied by photo type, with perpendicular/forward tailstock photos showing the highest scarring prevalence (respectively 19.1% and 17.6% most likely caused by entanglements) compared to photos of the fluke underside that tended to miss likely entanglement events (57.4% false negatives). {D}epending on the scoring approach, 8.2 to 27.3% of sampled whales were likely entangled at least once in their lifetime. {W}e found no significant spatial effect on scarring prevalence and a weak increasing (2016-2020), then decreasing (2020-2023), temporal trend. {M}ales had a significantly higher scarring prevalence than females. {S}imulations of population trajectory and photographic sampling designs revealed that, even in an unrealistically optimistic scenario of new fishing regulations reducing the number of entanglements to zero, 165 ind. yr-1, for 5 yr, would need to be sampled with good-quality tailstock photos to detect the decrease in scarring prevalence with 80% statistical power. {O}ur findings enable recommendations for monitoring impacts of fishing gear interactions with humpback whales using {US} {W}est {C}oast waters.},
  keywords = {{F}isheries bycatch ; {L}arge whales ; {P}hotographic data ; {G}enetics ; {S}car analysis ; {S}imulation ; {O}regon ; {US} {W}est {C}oast ; {ETATS} {UNIS} ; {PACIFIQUE} ; {OREGON}},
  booktitle = {},
  journal = {{E}ndangered {S}pecies {R}esearch},
  volume = {57},
  numero = {},
  pages = {253--271},
  ISSN = {1863-5407},
  year = {2025},
  DOI = {10.3354/esr01416},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094397},
}