Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA

Little is known about common bottlenose dolphin (Tursiops truncatus) seasonal migration along the United States southeastern Atlantic coast, or what factors influence migratory patterns. Therefore, our objectives were to: 1) document evidence for seasonal movement of dolphins in this region (that wo...

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Autores principales:	Taylor Anna R, Schacke John H, Speakman Todd R, Castleberry Steven B, Chandler Richard B
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2016
Materias:	common bottlenose dolphin migration temporary emigration seasonal abundance robust design closed capture capture-mark-recapture photoidentification Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/e115480f7a5d418cac03e28f22934d6e
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spelling	oai:doaj.org-article:e115480f7a5d418cac03e28f22934d6e2021-12-02T17:31:50ZFactors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA2084-883810.1515/ami-2016-0002https://doaj.org/article/e115480f7a5d418cac03e28f22934d6e2016-04-01T00:00:00Zhttps://doi.org/10.1515/ami-2016-0002https://doaj.org/toc/2084-8838Little is known about common bottlenose dolphin (Tursiops truncatus) seasonal migration along the United States southeastern Atlantic coast, or what factors influence migratory patterns. Therefore, our objectives were to: 1) document evidence for seasonal movement of dolphins in this region (that would indicate migratory behavior) and 2) determine if seasonal changes in abundance and temporary emigration (i.e., migration indicators) for dolphins along South Carolina and Georgia coasts are related to changes in water quality variables. Previously collected capturerecapture data (from visual sightings of individual dolphins) and water quality data from Charleston, South Carolina and St. Catherine’s Island, Georgia were used to achieve our objective. Robust design models were used to estimate seasonal abundance and temporary emigration for the Charleston population, whereas closed population capture-recapture models were used to estimate seasonal abundances for the St. Catherine’s Island population. The Charleston population showed seasonal abundance and temporary emigration patterns with low estimates in winter, which increased in spring, peaked in summer, and decreased in fall. Seasonal temporary emigration was best explained by water temperature, which followed the same general pattern. Seasonal abundance in the St. Catherine’s population was best explained by salinity, but no consistent pattern in abundance was observed. Our results not only provide the first evidence of a clear seasonal migration of dolphins in this region, but can aid in conservation and management efforts by increasing accuracy of abundance estimates.Taylor Anna RSchacke John HSpeakman Todd RCastleberry Steven BChandler Richard BDe Gruyterarticlecommon bottlenose dolphin migration temporary emigration seasonal abundance robust design closed capture capture-mark-recapture photoidentificationBiology (General)QH301-705.5ENAnimal Migration, Vol 3, Iss 1, Pp 14-26 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	common bottlenose dolphin migration temporary emigration seasonal abundance robust design closed capture capture-mark-recapture photoidentification Biology (General) QH301-705.5
spellingShingle	common bottlenose dolphin migration temporary emigration seasonal abundance robust design closed capture capture-mark-recapture photoidentification Biology (General) QH301-705.5 Taylor Anna R Schacke John H Speakman Todd R Castleberry Steven B Chandler Richard B Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
description	Little is known about common bottlenose dolphin (Tursiops truncatus) seasonal migration along the United States southeastern Atlantic coast, or what factors influence migratory patterns. Therefore, our objectives were to: 1) document evidence for seasonal movement of dolphins in this region (that would indicate migratory behavior) and 2) determine if seasonal changes in abundance and temporary emigration (i.e., migration indicators) for dolphins along South Carolina and Georgia coasts are related to changes in water quality variables. Previously collected capturerecapture data (from visual sightings of individual dolphins) and water quality data from Charleston, South Carolina and St. Catherine’s Island, Georgia were used to achieve our objective. Robust design models were used to estimate seasonal abundance and temporary emigration for the Charleston population, whereas closed population capture-recapture models were used to estimate seasonal abundances for the St. Catherine’s Island population. The Charleston population showed seasonal abundance and temporary emigration patterns with low estimates in winter, which increased in spring, peaked in summer, and decreased in fall. Seasonal temporary emigration was best explained by water temperature, which followed the same general pattern. Seasonal abundance in the St. Catherine’s population was best explained by salinity, but no consistent pattern in abundance was observed. Our results not only provide the first evidence of a clear seasonal migration of dolphins in this region, but can aid in conservation and management efforts by increasing accuracy of abundance estimates.
format	article
author	Taylor Anna R Schacke John H Speakman Todd R Castleberry Steven B Chandler Richard B
author_facet	Taylor Anna R Schacke John H Speakman Todd R Castleberry Steven B Chandler Richard B
author_sort	Taylor Anna R
title	Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
title_short	Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
title_full	Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
title_fullStr	Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
title_full_unstemmed	Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA
title_sort	factors related to common bottlenose dolphin (tursiops truncatus) seasonal migration along south carolina and georgia coasts, usa
publisher	De Gruyter
publishDate	2016
url	https://doaj.org/article/e115480f7a5d418cac03e28f22934d6e
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Factors related to common bottlenose dolphin (Tursiops truncatus) seasonal migration along South Carolina and Georgia coasts, USA

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