An acoustic link between blue whales in the eastern tropical Pacific and the northeast Pacific

Citation
Km. Stafford et al., An acoustic link between blue whales in the eastern tropical Pacific and the northeast Pacific, MAR MAMM SC, 15(4), 1999, pp. 1258-1268
Citations number
29
Categorie Soggetti
Animal Sciences
Journal title
MARINE MAMMAL SCIENCE
ISSN journal
08240469 → ACNP
Volume
15
Issue
4
Year of publication
1999
Pages
1258 - 1268
Database
ISI
SICI code
0824-0469(199910)15:4<1258:AALBBW>2.0.ZU;2-P
Abstract
Blue whale calls in the eastern North Pacific Ocean consist of a two-part c all often termed the A-B call. This call has been described for regions off shore of Oregon, Washington, and California, USA and the Sea of Cortez, Mex ico (reviewed in Rivers 1997). Data collected from moored hydrophones in th e eastern tropical Pacific (ETP) indicate that the A-B pattern is common in this region as well. There is consistency in this call type throughout the eastern North Pacific and throughout the year. This acoustic evidence indi cates continuity between blue whales in the ETP and those found west of Nor th America. The acoustic data suggest that the population of blue whales ge nerally referred to as the "California/Mexico'' stock might better be terme d the "northeast Pacific" stock of blue whales.