Discriminating Between Free-ranging Long-finned (Globicephala Melas) and Short-finned (Globalicephala Macrorhynchus) Pilot Whales Off the East Coast of the United States ; a Thesis PDF Download

Author: Brenda K. Rone
Publisher:
ISBN:
Category : Globicephala macrorhynchus
Languages : en
Pages : 238

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Author: Robert Still
Publisher: Princeton University Press
ISBN: 0691182167
Category : Nature
Languages : en
Pages : 208

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"Produced in association with ORCA"--Back cover.

Author: Gregory P. Donovan
Publisher:
ISBN:
Category : Globicephala
Languages : en
Pages : 504

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Papers arising out of a field programme to examine catches of long-finned pilot whales (Globicephal melas) taken in the North Atlantic in the Faroese fishery. The papers discuss characteristics such as age and growth parameters, genetic studies and social organisation, reporductive biology, feeding and energetics, pollution and parasitology.

Author: Dawn Laurel Nelson
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 52

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The long-finned pilot whale, Globicephala melas, is a widely distributed pelagic species found in cold temperate waters of the North Atlantic and southern hemisphere. This report reviews the conservation status of this species. It includes information on the whale's geographic distribution, population size and trends, protection status, habitat, general biology, species movement and behaviour, factors limiting the whale population size and distribution, and the special significance of the species for Canada. Concludes with discussion of the current consensus regarding the status of the species.

Author: Frederick W. Wenzel
Publisher:
ISBN:
Category : Globicephala macrorhynchus
Languages : en
Pages : 56

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"This manuscript provides a brief description of the two species of pilot whales (long-finned pilot whales, Globicephala melas (previously known as G. melaena), and the short-finned pilot whale (G. macrorhynchus), found in the North Atlantic Ocean . It then lists scientific publications relating to the biology, behavior, conservation and management, most of which were published from 1939 to present. This document focuses primarily on published literature on the distribution and abundance of the two species throughout the North Atlantic Ocean. Literature on long-finned pilot whales and short-finned pilot whales from other geographic regions is also included, as readers may gain insight into the research methodologies and findings of other stocks and populations of these two species. Unpublished articles or popular books are generally excluded, unless these contain important information not available elsewhere"--Abstract.

Author: Catherine Meyer
Publisher:
ISBN:
Category : Animal population genetics
Languages : en
Pages : 149

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Despite frequently stranding on New Zealand’s beaches, there remains a paucity of information about free-ranging long-finned pilot whales (Globicephala melas edwardii) in these waters. The purpose of this study was to assess the demographics, social structure and interspecific associations of pilot whales frequenting eastern New Zealand waters. Photo-identification images and associated demographic data of pilot whale groups were collected opportunistically from tour operators and research vessels from the Bay of Islands to Kaikoura between January 2003 and July 2019. Group size ranged from 5 – 250 whales (median = 50, IQ = 30 – 80), with neonates and/or calves present in the majority of encounters (79%, n = 64). Pilot whales were most frequently encountered in mixed-species groups (79% n = 64), primarily accompanied by oceanic bottlenose dolphins (Tursiops truncatus). A total of 145 individuals were photo-identified, establishing the New Zealand Long-Finned Pilot Whale Identification Catalogue. The mark rate (i.e. proportion of individuals with long-term or permanent dorsal fin notches and/or nicks; 13.4%) and the re-sight rate (31%) for the sampled population were low, with most (82.2%) re-sights occurring at one study location, the Bay of Islands. Patterns of pilot whale occurrence suggest some degree of seasonal site fidelity, possibly influenced by prey availability or the peak calving season. The low re-sight rate suggests either a large population, high transience and/or large individual home ranges. Social structure analysis was carried out using the program SOCPROG to determine the strength and temporal stability of associations between pilot whales from northeastern New Zealand. Individuals associated randomly and there was no evidence to suggest the existence of preferred long- or short-term dyadic associations, however, there were differences in individual gregariousness. Some strong dyadic associations were evident, with hierarchical cluster and social network analyses supporting the division of the study population into multiple social clusters of between three and eight individuals. Dyadic associations were irregular, with individuals disassociating on two different time scales. This indicates that pilot whales may have a hierarchical society, where small social clusters form groups of casual acquaintances, as seen in populations elsewhere. A similar analysis of social structure investigated the possibility of an interspecific social network based on dyadic associations between oceanic bottlenose dolphins iv and pilot whales encountered off the Bay of Islands. There was no evidence of temporally stable interspecific associations, most likely due to the small sample size. However, repeat associations between individuals of both species on variable temporal scales suggests that there may be an underlying pattern worthy of future investigation. This study revealed the value of opportunistic datasets in understanding the demographics and social behaviours of a species that remains poorly-studied in New Zealand and the southern hemisphere in general. Considering that our knowledge of pilot whales in New Zealand waters is largely based on studies of stranded individuals, this research has revealed important information about the lives of freeranging pilot whales.

Author: Pam Joyce Stacey
Publisher:
ISBN:
Category : Endangered species
Languages : en
Pages : 44

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Author: C. Andrea (Carolyn Andrea) Ottensmeyer
Publisher: National Library of Canada = Bibliothèque nationale du Canada
ISBN: 9780612675568
Category :
Languages : en
Pages : 272

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Author: Joseph R. Geraci
Publisher: National Aquarium in Baltimore
ISBN: 0977460908
Category : Marine mammals
Languages : en
Pages : 386

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Book Description
Comprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.

Author: Damon Paul Gannon
Publisher:
ISBN:
Category : Globicephala melaena
Languages : en
Pages : 230

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