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dc.contributor.authorFriedlaender, Ari S.
dc.contributor.authorHazen, Elliott L.
dc.contributor.authorNowacek, Douglas P.
dc.contributor.authorHalpin, Patrick N.
dc.contributor.authorWare, Colin
dc.contributor.authorWeinrich, Mason T.
dc.contributor.authorHurst, Thomas P.
dc.contributor.authorWiley, David N.
dc.date.accessioned2011-05-04T14:35:43Z
dc.date.available2011-05-04T14:35:43Z
dc.date.issued2009-12-03
dc.identifier.citationMarine Ecology Progress Series 395 (2009): 91-100en_US
dc.identifier.urihttp://hdl.handle.net/1912/4541
dc.descriptionAuthor Posting. © Inter-Research, 2009. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 395 (2009): 91-100, doi:10.3354/meps08003.en_US
dc.description.abstractHumpback whales Megaptera novaeangliae have adopted unique feeding strategies to take advantage of behavioral changes in their prey. However, logistical constraints have largely limited ecological analyses of these interactions. Our objectives were to (1) link humpback whale feeding behaviors to concurrent measurements of prey using scientific echo-sounders, and (2) quantify how sand lance behavior influences the feeding behaviors and foraging ecology of humpback whales. To measure, in fine detail, the 3-dimensional orientation and movement patterns of humpback whales underwater, we used a multi-sensor tag attached via suction cups (DTAG). We tested the specific hypothesis that the diel movement patterns of sand lance between bottom substrate and the water column correlates to changes between surface and bottom feeding strategies of humpback whales on Stellwagen Bank, MA. We collected over 96 h of both day- and nighttime data from 15 whales in 2006, and recorded 393 surface and 230 bottom feeding events. Individual whales exhibit both surface and bottom feeding behaviors, switching from one to the other in relation to changing light and prey conditions. Surface feeding behaviors were individually variable in their constitution but ubiquitously biased towards daylight hours, when prey was most abundant in the upper portion of the water column. Bottom feeding behavior occurred largely at night, coincident with when sand lance descend to seek refuge in the substrate. Our data provide novel insights into the behavioral ecology of humpback whales and their prey, indicating significant diel patterns in foraging behaviors concurrent with changes in prey behavior.en_US
dc.description.sponsorshipThis research was carried out under MMPA Permit #981-1707-01.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoenen_US
dc.publisherInter-Researchen_US
dc.relation.urihttps://doi.org/10.3354/meps08003
dc.subjectHumpback whalesen_US
dc.subjectSand lanceen_US
dc.subjectDiel feedingen_US
dc.subjectPredator–prey interactionsen_US
dc.titleDiel changes in humpback whale Megaptera novaeangliae feeding behavior in response to sand lance Ammodytes spp. behavior and distributionen_US
dc.typeArticleen_US
dc.identifier.doi10.3354/meps08003


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