[MARMAM] New publication on Mariana Archipelago short-finned pilot whales

Marie Hill - NOAA Affiliate marie.hill at noaa.gov
Tue Nov 27 11:18:24 PST 2018


We are pleased to announce a new publication on Mariana Archipelago
short-finned pilot whales.

Short-finned pilot whales (*Globicephala macrorhynchus*) of the Mariana
Archipelago: Individual affiliations, movements, and spatial use. Marine
Mammal Science. DOI  - 10.1111/mms.12567

Little is known about short-finned pilot whales (*Globicephala
macrorhynchus*) in the western North Pacific outside of Japanese coastal
waters. To expand understanding of short-finned pilot whale ecology in the
region, we conducted small-boat surveys in 2010−2016 within the Mariana
Archipelago to investigate individual associations, movements, spatial use,
and dive behavior of short-finned pilot whales. We collected genetic,
photo-identification, and satellite-tag data and identified 191 distinctive
individuals. A preliminary social network diagram of photo-cataloged
individuals revealed a main cluster that comprised 82% of individuals,
representing all five mitochondrial DNA haplotypes identified within the
population. Kernel density estimates for tagged short-finned pilot whales
(n = 11) during summer were used to identify areas with the highest
probability of use (10% probability density contour), core area (50%) and
home range (95%). The area with highest probability of use by short-finned
pilot whales was off the northwest side of Guam. Satellite tag data also
suggest that some individuals are island-associated year-round. Data from
five location-dive tags demonstrated that the short-finned pilot whales
dove more often to intermediate depths at twilight and night, suggesting
they may target prey that forage on the deep scattering layer as it
migrates to and from the surface.

You can find the article on the Marine Mammal Science website or contact
Marie Hill (marie.hill at noaa.gov).


Thank you,
Marie Hill
Marie C. Hill
Joint Institute for Marine and Atmospheric Research
Pacific Islands Fisheries Science Center
Protected Species Division - Cetacean Research Program

Mailing Address:
1845 Wasp Blvd., Building 176
Honolulu, HI 96818
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