{"refrec":{"BRefID":408359,"RR":"<b>Burkhardt, K.; Papastamatiou, Y.P.; Seybald, P.; Pere, O.; Ramage, J.L.; Tiarii, I.; Tixier, T.; Heitaurari, O.; Lecours, V.</b> (2025). Horizontal and vertical movement ecology of the oceanic whitetip shark (<i>Carcharhinus Longimanus</i>) in French Polynesia. <i>Mar. Biol. (Berl.) 172(2)</i>: 33. <a href=\"https://dx.doi.org/10.1007/s00227-025-04598-4\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-025-04598-4</a>","BEntID":406162,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 172(2)</i>: 33. <a href=\"https://dx.doi.org/10.1007/s00227-025-04598-4\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-025-04598-4</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Burkhardt, K.; Papastamatiou, Y.P.; Seybald, P.; Pere, O.; Ramage, J.L.; Tiarii, I.; Tixier, T.; Heitaurari, O.; Lecours, V.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Burkhardt, K. <i>et al.</i>","Englishabstract":"The oceanic whitetip shark (<i>Carcharhinus longimanus</i>) is globally understudied with major data deficits despite its global distribution. We present horizontal and vertical movement data by investigating habitat use of seven mature oceanic whitetip sharks equipped with fin-mounted satellite (SPOT/SPLASH) tags off of Moorea, French Polynesia. Sharks moved net distances ranging from 1,625 to 7,885&nbsp;km over periods of 83 to 286&nbsp;days at liberty. A total area of 1,467,157 km<sup>2</sup> was utilized by the sharks, spanning three exclusive economic zones (French Polynesia, Kiribati, and Cook Islands) and unmanaged international waters. A core area of 176,635 km<sup>2</sup> was identified within the Society Islands. Application of a two-state Hidden Markov Model differentiated movement along each individual track between a transient behavioral state (66% of movement) and an area-restricted searching behavioral state (34% of movement), revealing sharks tended to switch to residential behavior when associated with islands, seamounts, or bathymetric ridges. Thermal barriers, particularly sea surface temperatures of less than 26&nbsp;°C, limit horizontal movement. Additional evidence of site fidelity for the largely oceanic species was observed with five of seven tagged sharks returning to Moorea during the study. Vertical movements reached a maximum depth of 270&nbsp;m with 97% of their time spent at a depth shallower than 130&nbsp;m. This study provides the first description of habitat use of <i>C. longimanus</i> in the South Pacific, contributing to the collective global knowledge of an enigmatic species as well as providing insight into its effective management in French Polynesia, a designated shark sanctuary.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Horizontal and vertical movement ecology of the oceanic whitetip shark (<i>Carcharhinus Longimanus</i>) in French Polynesia","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-15 01:34:02.681768","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Satellite telemetry · Shark sanctuary · Pelagic · Behavioral states","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-06-12","DateCreate":"2025-06-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s00227-025-04598-4"},"refs":null,"anarec":{"AnaID":408359,"PubliDate":2025,"Pagination":"33","XtraPublOfAnaID":null,"ISBN":null,"Volume":"172","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. 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