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Photographic Identification Of Individual Fin Whales Balaenoptera Physalus In The Gulf Of Maine
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Book Synopsis Photographic Identification of Individual Fin Whales (BALAENOPTERA PHYSALUS) in the Gulf of Maine by : Beverly A. Agler
Download or read book Photographic Identification of Individual Fin Whales (BALAENOPTERA PHYSALUS) in the Gulf of Maine written by Beverly A. Agler and published by . This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Photographic-identification of Fin Whales, Balaenoptera Physalus, Using Molecular Genetic Microsatellite Markers by : Daniel DenDanto
Download or read book Evaluation of Photographic-identification of Fin Whales, Balaenoptera Physalus, Using Molecular Genetic Microsatellite Markers written by Daniel DenDanto and published by . This book was released on 1998 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Guide to the Photographic Identification of Individual Whales Based on Their Natural and Acquired Markings by : Jon Lien
Download or read book A Guide to the Photographic Identification of Individual Whales Based on Their Natural and Acquired Markings written by Jon Lien and published by St. John's, Nfld. : Breakwater. This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fin Whale (Balaenoptera Physalus) Associations on a Feeding Ground in the Western Gulf of Maine by : William Richard Cioffi
Download or read book Fin Whale (Balaenoptera Physalus) Associations on a Feeding Ground in the Western Gulf of Maine written by William Richard Cioffi and published by . This book was released on 2015 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fin whales (Balaenoptra physalus) are commonly considered solitary mammals and are not found in stable groups. Transient associations are observed on the feeding grounds in the western Gulf of Maine. These associations consist of animals coordinating their movements in close physical proximity and sometimes feeding is observed in these groups. Group size ranges from 2 to 10, through larger groups are less stable. Recent research suggests there may be age and sex related effects on similar associations in a closely related species, the humpback whale, Megaptera novaeangliae (Ramp et al., 2010). The purpose of this work is to investigate the structure and function of fin whale associations. Data on individually identified fin whales was collected from 2005-2009 opportunistically on whale watching boats in New Hampshire and Massachusetts. Photo-identification was used to match whales in this study with whales seen at other locations around the Gulf of Maine and where possible sex data was determined from filed observations or biopsies conducted by DenDanto (1998). Spatial distribution of groups, preferred associates, sexual makeup of groups, diel patterns to grouping, and behavior of singles and groups were all investigated. Additionally, a potential methodology for determining prey abundance by measuring surface copepod density was attempted. The spatial distribution of associated fin whales was not significantly predicted by bathymetry in a generalized additive model, while that of non-associated whales was significantly predicted. Since bathymetry should be related to prey density, this result indicates that associations may serve non-feeding functions. These other functions may include male-male competition or courtship of potential mates. No preferred associates were detected among individual identified fin whales. Large differences in gregariousness among individuals were detected. These are possible due to a sexual bias in groups. Males were found to be overrepresented in associations during the summer. When both sexes were known in a 2 whale association, male-male groups were most common, followed by male-female groups and female-female groups. There was no significant difference in male and female participation in associations in the fall. This suggests that females may incur a cost from grouping with males during the summer, but may permit grouping in the fall, perhaps for reproductive purposes. Costs for females may include harassment from males or inability to cooperatively feed because of different diet requirements. Additionally, since baleen whale males are smaller than females, their lower energetic requirements may allow them more time for social behaviors either and account for their increased participation in grouping. Diel patterns in grouping were also detected in the summer, but not in the fall, possibly pointing to a change in prey, or a change in the function of some groups in the fall perhaps toward breeding activities. While ventilation rate, ventilation to diving ratio, and speed were not significantly different for single whales and groups of fin whales, some observations suggested that groups of whales engage in social behaviors not related to feeding. This study suggests the possibility that fin whale feeding habitat in the western Gulf of Maine may also be important habitat for breeding activities. Further studies could test for differences in the function of associations based on sex composition using acoustic data along with real time behavioral sampling and a careful definition of association. Since little is known about fin whale breeding behavior and migration patterns, this line of research is essential to developing effective management plans for an endangered cetacean species.
Download or read book Whales of the Gulf of Maine written by and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin written by and published by . This book was released on 1992 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Fin Whale (Balaenoptera Physalus L.) by :
Download or read book The Fin Whale (Balaenoptera Physalus L.) written by and published by . This book was released on 1971 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Listing of 1211 citations arranged alphabetically by author and indexed by subject.
Book Synopsis Report of the Commission - International Whaling Commission by : International Whaling Commission
Download or read book Report of the Commission - International Whaling Commission written by International Whaling Commission and published by . This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis North Atlantic Fin Whale Research by :
Download or read book North Atlantic Fin Whale Research written by and published by . This book was released on 1987 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1992 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis European Research on Cetaceans by : European Cetacean Society. Conference
Download or read book European Research on Cetaceans written by European Cetacean Society. Conference and published by . This book was released on 2004 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cape Wind Energy Project written by and published by . This book was released on 2009 with total page 1222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atlantic Protected Living Marine Resources (APLMR) Initiative by :
Download or read book Atlantic Protected Living Marine Resources (APLMR) Initiative written by and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Fisheries Review written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fin Whale written by and published by . This book was released on 2015 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Marine Mammals and the Exxon Valdez by : Thomas R. Loughlin
Download or read book Marine Mammals and the Exxon Valdez written by Thomas R. Loughlin and published by Academic Press. This book was released on 2013-10-22 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oil spill disaster that occurred when the Exxon Valdez ran aground has become part of the iconography of ecological disaster. This book synthesizes previously confidential data only recently released by the U.S. government. The data concerns the effects of this nightmarish spill on marine mammals, such as sea otters, harbor seals, killer whales, and humpback whales. Because many of the book's contributors were on site within 24 hours of this 11 million gallon catastrophe, the book is a unique longitudinal study of the demise of an ecosystem due to a single acute environmental perturbation. These certain-to-be-influential results reported here should assist marine biologists, pathologists, toxicologists, environmentalists, engineers, and coastal planners in assessing the nature of this now legendary disaster.