Fin Whale Balaenoptera Physalus Associations On A Feeding Ground In The Western Gulf Of Maine
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Fin Whale Balaenoptera Physalus Associations On A Feeding Ground In The Western Gulf Of Maine
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Author : William Richard Cioffi
language : en
Publisher:
Release Date : 2015
Fin Whale Balaenoptera Physalus Associations On A Feeding Ground In The Western Gulf Of Maine written by William Richard Cioffi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Finback whale categories.
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.
Whales Of The Gulf Of Maine
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Author :
language : en
Publisher:
Release Date : 1985
Whales Of The Gulf Of Maine written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Finback whale categories.
The Fin Whale Balaenoptera Physalus L
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Author :
language : en
Publisher:
Release Date : 1971
The Fin Whale Balaenoptera Physalus L written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Finback whale categories.
Listing of 1211 citations arranged alphabetically by author and indexed by subject.
Photographic Identification Of Individual Fin Whales Balaenoptera Physalus In The Gulf Of Maine
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Author : Beverly A. Agler
language : en
Publisher:
Release Date : 1992
Photographic Identification Of Individual Fin Whales Balaenoptera Physalus In The Gulf Of Maine written by Beverly A. Agler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Finback whale categories.
The Genetic Structure Of Fin Whales Balaenoptera Physalus From The Gulf Of St Lawrence And West Greenland
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Author : Martine Bérubé
language : en
Publisher:
Release Date : 1993
The Genetic Structure Of Fin Whales Balaenoptera Physalus From The Gulf Of St Lawrence And West Greenland written by Martine Bérubé and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
Fin Whale
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Author :
language : en
Publisher:
Release Date : 2015
Fin Whale written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Endangered species categories.
The Fin Whale
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Author :
language : un
Publisher:
Release Date : 1971
The Fin Whale written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with categories.
Noisy Oceans
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Author : Gaye Bayrakci
language : en
Publisher: John Wiley & Sons
Release Date : 2023-12-19
Noisy Oceans written by Gaye Bayrakci and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-12-19 with Science categories.
Noisy Oceans Measuring devices such as ocean bottom seismometers and hydrophones designed to detect earthquakes pick up many other signals. These were previously ignored as background noise from unknown sources, but advanced technology now allows insights into the noise created from icebergs, ships, hydrothermal vents, whales, rain, marine engineering, and more. Noisy Oceans: Monitoring Seismic and Acoustic Signals in the Marine Environment is a comprehensive guide to non-tectonic marine noise originating from different environmental, biological, and anthropogenic sources. Volume highlights include: Overview of marine soundscapes and their sources Existing and new methods for studying acoustic signals Case studies from around the world Spans disciplines from geology and geophysicists to biology Explores the impacts and implications of marine noise The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Management Plan For The Fin Whale Balaenoptera Physalus Atlantic Population In Canada
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Author : Andréanne Demers
language : en
Publisher:
Release Date : 2017
Management Plan For The Fin Whale Balaenoptera Physalus Atlantic Population In Canada written by Andréanne Demers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Finback whale categories.
"The Atlantic population of fin whales was reduced by whaling during much of the 20th century. Since 1971, however, the species has not been hunted in Canada and sightings remain relatively common off the Atlantic coast and in the Estuary and Gulf of St. Lawrence. The species was designated "special concern" in May 2005 by the Committee on the Status of Endangered Wildlife in Canada and was officially added to Schedule 1 of the Species at Risk Act in July 2006 because it was considered likely to become threatened or endangered due to a combination of threats and biological characteristics. The objective of the present management plan is to ensure that anthropogenic threats within Canadian waters do not cause a decline of the population or a reduction of the currently known distribution range in Canada. To reach this objective, several measures are proposed through four approaches: conservation, stewardship and protection of individuals, education and outreach, research and monitoring. These measures require the participation and cooperation of many partners among federal and provincial departments as well as First Nations, non-governmental organizations, universities, and industry associations"--Executive summary, p. iii.
Status Report On The Fin Whale Balaenoptera Physalus
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Author : Gregory N. Meredith
language : en
Publisher:
Release Date : 1987
Status Report On The Fin Whale Balaenoptera Physalus written by Gregory N. Meredith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.