Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida
This study was designed to examine the social and genetic structure of bottlenose dolphins inhabiting the coastal waters near Jacksonville, Florida. Behavioral and photo-identification data obtained from December 1994--December 1997 identified three behaviorally differentiated bottlenose dolphin com...
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ftunivmiamiir:oai:scholarlyrepository.miami.edu:dissertations-2770 2023-05-15T17:45:43+02:00 Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida Caldwell, Marthajane Michael S. Gaines - Committee Chair 2001-01-01T08:00:00Z https://scholarlyrepository.miami.edu/dissertations/1771 unknown Scholarly Repository Dissertations from ProQuest Biology Molecular; Biology Animal Physiology; Biology Zoology article 2001 ftunivmiamiir 2019-08-09T22:50:26Z This study was designed to examine the social and genetic structure of bottlenose dolphins inhabiting the coastal waters near Jacksonville, Florida. Behavioral and photo-identification data obtained from December 1994--December 1997 identified three behaviorally differentiated bottlenose dolphin communities in the coastal and inshore waters of the Jacksonville study area: Northern, Southern and Coastal. These parapatric communities differed in density, habitat fidelity, and social affiliation patterns. Although some dolphins were photographed outside of their community's range, interactions between communities were observed infrequently. The Northern community was the most isolated of the three, with 96% of sightings (n = 353 of 366 sightings) containing only dolphins that had been photographed within the community's range. Seventy-eight percent (n = 145 of 185 sightings) of the groups photographed in the Southern community's range contained only Southern community members. The Coastal community was the least isolated, 48% (n = 38 of 79 sightings) of the groups photographed in the Coast region contained dolphins photographed at least once the inshore habitat. Despite the fact that bottlenose dolphins have the ability to travel great distances and no geographic barriers to dolphin movements between communities exist within the Jacksonville study area there was significant genetic structure of both mtDNA haplotypes (FST = 0.49, P ≤ 0.001) and nuclear microsatellite loci (FST = 0.031, P ≤ 0.001). Although the three Jacksonville communities use contiguous habitats, the Northern community was behaviorally and genetically differentiated from the Southern and Coastal communities. Evidence for genetic structure on such a small geographic scale relative to the entire northwest Atlantic range of bottlenose dolphins strongly indicate that management and conservation efforts be based on a finer scale than is currently being considered. Article in Journal/Newspaper Northwest Atlantic University of Miami: Scholarly Repository |
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Open Polar |
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University of Miami: Scholarly Repository |
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ftunivmiamiir |
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topic |
Biology Molecular; Biology Animal Physiology; Biology Zoology |
spellingShingle |
Biology Molecular; Biology Animal Physiology; Biology Zoology Caldwell, Marthajane Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
topic_facet |
Biology Molecular; Biology Animal Physiology; Biology Zoology |
description |
This study was designed to examine the social and genetic structure of bottlenose dolphins inhabiting the coastal waters near Jacksonville, Florida. Behavioral and photo-identification data obtained from December 1994--December 1997 identified three behaviorally differentiated bottlenose dolphin communities in the coastal and inshore waters of the Jacksonville study area: Northern, Southern and Coastal. These parapatric communities differed in density, habitat fidelity, and social affiliation patterns. Although some dolphins were photographed outside of their community's range, interactions between communities were observed infrequently. The Northern community was the most isolated of the three, with 96% of sightings (n = 353 of 366 sightings) containing only dolphins that had been photographed within the community's range. Seventy-eight percent (n = 145 of 185 sightings) of the groups photographed in the Southern community's range contained only Southern community members. The Coastal community was the least isolated, 48% (n = 38 of 79 sightings) of the groups photographed in the Coast region contained dolphins photographed at least once the inshore habitat. Despite the fact that bottlenose dolphins have the ability to travel great distances and no geographic barriers to dolphin movements between communities exist within the Jacksonville study area there was significant genetic structure of both mtDNA haplotypes (FST = 0.49, P ≤ 0.001) and nuclear microsatellite loci (FST = 0.031, P ≤ 0.001). Although the three Jacksonville communities use contiguous habitats, the Northern community was behaviorally and genetically differentiated from the Southern and Coastal communities. Evidence for genetic structure on such a small geographic scale relative to the entire northwest Atlantic range of bottlenose dolphins strongly indicate that management and conservation efforts be based on a finer scale than is currently being considered. |
author2 |
Michael S. Gaines - Committee Chair |
format |
Article in Journal/Newspaper |
author |
Caldwell, Marthajane |
author_facet |
Caldwell, Marthajane |
author_sort |
Caldwell, Marthajane |
title |
Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
title_short |
Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
title_full |
Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
title_fullStr |
Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
title_full_unstemmed |
Social and genetic structure of bottlenose dolphin (Tursiops truncatus) in Jacksonville, Florida |
title_sort |
social and genetic structure of bottlenose dolphin (tursiops truncatus) in jacksonville, florida |
publisher |
Scholarly Repository |
publishDate |
2001 |
url |
https://scholarlyrepository.miami.edu/dissertations/1771 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Dissertations from ProQuest |
_version_ |
1766148934998163456 |