@article{fdi:010093543,
  title = {{D}emographic insights and spatial distribution of the {C}ommerson's {D}olphin ({C}ephalorhynchus commersonii) off the {K}erguelen {A}rchipelago ({S}outhern {I}ndian {O}cean)},
  author = {{P}retto, {Z}. and {B}arbraud, {C}. and {M}onestiez, {P}. and {V}iricel, {A}. and {G}asco, {N}. and {G}uinet, {C}. and {L}esage, {C}. and {T}ixier, {P}aul},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {C}ommerson's dolphin ({C}ephalorhynchus commersonii) includes two subspecies, one of which, {C}. c. kerguelensis, is endemic to the {K}erguelen {A}rchipelago (southern {I}ndian {O}cean). {D}espite high conservation stakes associated with its geographical isolation (the other subspecies is only found in southern {S}outh {A}merica), the {K}erguelen {C}ommerson's dolphin remains poorly studied. {H}erein, we used observation and photo-identification data from a long-term monitoring program implemented since 2012 to assess the spatial distribution and demographic parameters of this subspecies. {U}sing geostatistical models, we found high probabilities of encounters of dolphins in fjord-type habitats in the {G}ulf of {M}orbihan and along the southern and northern coasts of the archipelago. {F}rom capture-mark-recapture models ({R}obust {D}esign and {POPAN}), annual survival of individuals in the {G}ulf of {M}orbihan was estimated at 0.82 +/- 0.23, with an abundance in this area ranging from 40 to 100 dolphins per year between 2012 and 2020. {H}owever, high temporary migration rates in and out of the {G}ulf of {M}orbihan were detected and supported by photo-identification data, with individuals confirmed traveling up to 130 km outside this area, generating uncertainty in demographic estimates. {O}ur findings, while providing baseline insights, highlight the need for improved knowledge on the feeding ecology and movements of dolphins to be able to produce spatial and demographic information that can be used to assess the conservation status of the {K}erguelen {C}ommerson's dolphin.},
  keywords = {abundance ; {C}ommerson's dolphin ; {C}ephalorhynchus commersonii ; photo-identification ; mark-recapture ; {P}oisson {K}riging ; {R}obust {D}esign ; {OCEAN} {INDIEN} ; {KERGUELEN}},
  booktitle = {},
  journal = {{A}quatic {M}ammals},
  volume = {51},
  numero = {3},
  pages = {218--232},
  ISSN = {0167-5427},
  year = {2025},
  DOI = {10.1578/am.51.3.2025.218},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093543},
}