@article{fdi:010070833, title = {{F}ine-scale vertical movements of oceanic whitetip sharks ({C}archarhinus longimanus)}, author = {{T}olotti, {M}. and {B}auer, {R}obert and {F}orget, {F}. and {B}ach, {P}ascal and {D}agorn, {L}aurent and {T}ravassos, {P}.}, editor = {}, language = {{ENG}}, abstract = {{T}ime series of depth data, obtained for 6 oceanic whitetip sharks ({C}archarhinus longimanus) tagged with pop-up satellite archival tags, were analyzed in detail. {T}he aim was to improve our knowledge of the vertical behavior of this species. {I}ndividuals were tagged in the {A}tlantic {O}cean (n=5) and {I}ndian {O}cean (n=1) between 2011 and 2012. {D}eployment periods for these tags varied from 100 to 178 d. {T}he sharks spent most of their time in the mixed layer, displaying the typical behavior of an epipelagic species. {H}owever, analyses revealed complex vertical movement patterns, including marked diel changes that reflect 3 different types of behavior. {R}esults of the generalized additive models indicate that vertical movements were strongly correlated with variations in the depth of the mixed layer. {A} correlation between vertical movements and sea-surface temperature ({SST}) was also observed. {W}hen {SST} was above average, oceanic whitetip sharks increased their vertical amplitude, disregarding the reduction of the mixed layer. {T}hermoregulation likely allows this type of vertical movement.}, keywords = {{ATLANTIQUE} ; {OCEAN} {INDIEN}}, booktitle = {}, journal = {{F}ishery {B}ulletin}, volume = {115}, numero = {3}, pages = {380--395}, ISSN = {0090-0656}, year = {2017}, DOI = {10.7755/fb.115.3.8}, URL = {https://www.documentation.ird.fr/hor/fdi:010070833}, }