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Passive acoustic monitoring of killer whales (Orcinus orca) reveals year-round distribution and residency patterns in the Gulf of Alaska.
Myers, Hannah J; Olsen, Daniel W; Matkin, Craig O; Horstmann, Lara A; Konar, Brenda.
Afiliación
  • Myers HJ; College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, 2150 Koyukuk Dr., Fairbanks, AK, 99775, USA. hmyers8@alaska.edu.
  • Olsen DW; North Gulf Oceanic Society, 3430 Main St., Suite B1, Homer, AK, 99603, USA.
  • Matkin CO; North Gulf Oceanic Society, 3430 Main St., Suite B1, Homer, AK, 99603, USA.
  • Horstmann LA; College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, 2150 Koyukuk Dr., Fairbanks, AK, 99775, USA.
  • Konar B; College of Fisheries and Ocean Sciences, University of Alaska Fairbanks, 2150 Koyukuk Dr., Fairbanks, AK, 99775, USA.
Sci Rep ; 11(1): 20284, 2021 10 13.
Article en En | MEDLINE | ID: mdl-34645878
Killer whales (Orcinus orca) are top predators throughout the world's oceans. In the North Pacific, the species is divided into three ecotypes-resident (fish-eating), transient (mammal-eating), and offshore (largely shark-eating)-that are genetically and acoustically distinct and have unique roles in the marine ecosystem. In this study, we examined the year-round distribution of killer whales in the northern Gulf of Alaska from 2016 to 2020 using passive acoustic monitoring. We further described the daily acoustic residency patterns of three killer whale populations (southern Alaska residents, Gulf of Alaska transients, and AT1 transients) for one year of these data. Highest year-round acoustic presence occurred in Montague Strait, with strong seasonal patterns in Hinchinbrook Entrance and Resurrection Bay. Daily acoustic residency times for the southern Alaska residents paralleled seasonal distribution patterns. The majority of Gulf of Alaska transient detections occurred in Hinchinbrook Entrance in spring. The depleted AT1 transient killer whale population was most often identified in Montague Strait. Passive acoustic monitoring revealed that both resident and transient killer whales used these areas much more extensively than previously known and provided novel insights into high use locations and times for each population. These results may be driven by seasonal foraging opportunities and social factors and have management implications for this species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transductores / Vocalización Animal / Acústica / Monitoreo del Ambiente / Ecolocación / Orca Tipo de estudio: Diagnostic_studies / Prognostic_studies Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Sci Rep Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Transductores / Vocalización Animal / Acústica / Monitoreo del Ambiente / Ecolocación / Orca Tipo de estudio: Diagnostic_studies / Prognostic_studies Límite: Animals País/Región como asunto: America do norte Idioma: En Revista: Sci Rep Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido