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Demography of an ice-obligate mysticete in a region of rapid environmental change.
Pallin, L; Bierlich, K C; Durban, J; Fearnbach, H; Savenko, O; Baker, C S; Bell, E; Double, M C; de la Mare, W; Goldbogen, J; Johnston, D; Kellar, N; Nichols, R; Nowacek, D; Read, A J; Steel, D; Friedlaender, A.
Afiliación
  • Pallin L; Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA.
  • Bierlich KC; Division of Marine Science and Conservation, Nicholas School of the Environment, Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, NC 28516, USA.
  • Durban J; Marine Mammal Institute, Department of Fisheries, Wildlife, & Conservation Sciences, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR, USA.
  • Fearnbach H; Marine Mammal Institute, Department of Fisheries, Wildlife, & Conservation Sciences, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR, USA.
  • Savenko O; SeaLife Response, Rehabilitation, and Research, Des Moines, WA 98198, USA.
  • Baker CS; SeaLife Response, Rehabilitation, and Research, Des Moines, WA 98198, USA.
  • Bell E; National Antarctic Scientific Center of Ukraine, 16 Taras Shevchenko Blvd, 01601, Kyiv, Ukraine.
  • Double MC; Ukrainian Scientific Center of Ecology of the Sea, 89 Frantsuzsky Blvd, 65009, Odesa, Ukraine.
  • de la Mare W; Marine Mammal Institute, Department of Fisheries, Wildlife, & Conservation Sciences, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR, USA.
  • Goldbogen J; Australian Antarctic Division, 203 Channel Highway, Kingston, Tas 7050, Australia.
  • Johnston D; Australian Antarctic Division, 203 Channel Highway, Kingston, Tas 7050, Australia.
  • Kellar N; Australian Antarctic Division, 203 Channel Highway, Kingston, Tas 7050, Australia.
  • Nichols R; Hopkins Marine Station, Department of Biology, Stanford University, 120 Ocean View Blvd, Pacific Grove, CA 93950, USA.
  • Nowacek D; Division of Marine Science and Conservation, Nicholas School of the Environment, Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, NC 28516, USA.
  • Read AJ; Marine Mammal and Turtle Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA.
  • Steel D; Institute for Marine Science, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA.
  • Friedlaender A; Department of Ocean Sciences, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA.
R Soc Open Sci ; 9(11): 220724, 2022 Nov.
Article en En | MEDLINE | ID: mdl-36397972
Antarctic minke whales (Balaenoptera bonaerensis, AMW) are an abundant, ice-dependent species susceptible to rapid climatic changes occurring in parts of the Antarctic. Here, we used remote biopsy samples and estimates of length derived from unoccupied aircraft system (UAS) to characterize for the first time the sex ratio, maturity, and pregnancy rates of AMWs around the Western Antarctic Peninsula (WAP). DNA profiling of 82 biopsy samples (2013-2020) identified 29 individual males and 40 individual females. Blubber progesterone levels indicated 59% of all sampled females were pregnant, irrespective of maturity. When corrected for sexual maturity, the median pregnancy rate was 92.3%, indicating that most mature females become pregnant each year. We measured 68 individuals by UAS (mean = 8.04 m) and estimated that 66.5% of females were mature. This study provides the first data on the demography of AMWs along the WAP and represents the first use of non-lethal approaches to studying this species. Furthermore, these results provide baselines against which future changes in population status can be assessed in this rapidly changing marine ecosystem.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: R Soc Open Sci Año: 2022 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 Idioma: En Revista: R Soc Open Sci Año: 2022 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido