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dc.contributor.authorMiller, Carolyn A.  Concept link
dc.contributor.authorBest, Peter B.  Concept link
dc.contributor.authorPerryman, Wayne L.  Concept link
dc.contributor.authorBaumgartner, Mark F.  Concept link
dc.contributor.authorMoore, Michael J.  Concept link
dc.date.accessioned2012-08-07T17:26:28Z
dc.date.available2012-08-07T17:26:28Z
dc.date.issued2012-07-12
dc.identifier.citationMarine Ecology Progress Series 459 (2012): 135-156en_US
dc.identifier.urihttps://hdl.handle.net/1912/5296
dc.descriptionAuthor Posting. © Inter-Research, 2012. This article is posted here by permission of Inter-Research. The definitive version was published in Marine Ecology Progress Series 459 (2012): 135-156, doi:10.3354/meps09675.en_US
dc.description.abstractMammalian reproduction is metabolically regulated; therefore, the endangered status and high variability in reproduction of North Atlantic right whales Eubalaena glacialis necessitate accurate assessments at sea of the nutritional condition of living individuals. Aerial photogrammetry was used to measure dorsal body width at multiple locations along the bodies of free-swimming right whales at different stages of the female reproductive cycle (E. glacialis) and during the initial months of lactation (mother and calf Eubalaena australis) to quantify changes in nutritional condition during energetically demanding events. Principal components analyses indicated that body width was most variable at 60% of the body length from the snout. Thoracic, abdominal and caudal body width of E. australis thinned significantly during the initial months of lactation, especially at 60% of body length from the snout, while their calves’ widths and width-to-length ratios increased. The body shape of E. glacialis that had been lactating for 8 mo was significantly thinner than non-lactating, non-pregnant E. glacialis. Body shape of E. glacialis measured in the eighth month of lactation was significantly thinner than that of E. australis in the first month, but did not differ from that of E. australis in the third and fourth months. Body width was comparable with diameter calculated from girth of carcasses. These results indicate that mother right whales rely on endogenous nutrient reserves to support the considerable energy expenditure during the initial months of lactation; therefore, photogrammetric measurements of body width, particularly at 60% of body length from the snout, are an effective way to quantitatively and remotely assess nutritional condition of living right whales.en_US
dc.description.sponsorshipThis project was made possible with funds provided by the National Oceanic and Atmospheric Administration (NOAA), National Marine Fisheries Service, the Northeast Consortium, and the Hussey Foundation through the Ocean Life Institute at Woods Hole Oceanographic Institution.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherInter-Researchen_US
dc.relation.urihttps://doi.org/10.3354/meps09675
dc.subjectRight whaleen_US
dc.subjectBody shapeen_US
dc.subjectBody conditionen_US
dc.subjectAerial photogrammetryen_US
dc.subjectReproductionen_US
dc.subjectEnergeticsen_US
dc.subjectEubalaenaen_US
dc.titleBody shape changes associated with reproductive status, nutritive condition and growth in right whales Eubalaena glacialis and E. australisen_US
dc.typeArticleen_US
dc.identifier.doi10.3354/meps09675


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