Skin lesion prevalence of estuarine common bottlenose dolphins ( Tursiops truncatus ) in North Carolina, with comparisons to other east coast study sites

2020 ◽  
Author(s):  
J. S. Taylor ◽  
L. B. Hart ◽  
J. Adams
Keyword(s):  
North Carolina ◽  
Skin Lesion ◽  
Tursiops Truncatus ◽  
East Coast ◽  
Bottlenose Dolphins ◽  
Study Sites

scholarly journals Lobomycosis in Offshore Bottlenose Dolphins (Tursiops truncatus), North Carolina

2009 ◽  
Vol 15 (4) ◽  
pp. 588-590 ◽  
Author(s):  
David S. Rotstein ◽  
Leslie G. Burdett ◽  
William McLellan ◽  
Lori Schwacke ◽  
Teri Rowles ◽  
...  
Keyword(s):  
North Carolina ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins

scholarly journals Abundance of Bottlenose Dolphins (Tursiops truncatus) in Estuarine and Near-Shore Waters of North Carolina, USA

2014 ◽  
Vol 129 (4) ◽  
pp. 165-171 ◽  
Author(s):  
Kim W. Urian ◽  
Danielle M. Waples ◽  
Reny B. Tyson ◽  
Lynne E. W. Hodge ◽  
Andrew J. Read
Keyword(s):  
North Carolina ◽  
Digital Media ◽  
Coastal Waters ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Potential Bias ◽  
Near Shore ◽  
Capture Recapture ◽  
Spatial Boundary ◽  
Identification Techniques

Abstract A capture-recapture survey of bottlenose dolphins (Tursiops truncatus) was conducted in the sounds, estuaries and near-shore waters of North Carolina during July 2006, using photographic identification techniques; 291 dolphins were identified from distinctive nicks and notches on their dorsal fins. The results of our photographic analyses were applied to several capture-recapture models. The best estimate of the number of bottlenose dolphins present in estuarine waters of North Carolina during July 2006 was 813 with a 95% Confidence Interval of 483–1,142. Previously in July 2000, 1,033 (95% CI: 860-1,266) dolphins were estimated to be present in the estuaries of North Carolina. When the analysis from the 2006 surveys was expanded to include adjacent coastal waters, then the estimate of abundance increased to 1,138. Therefore, the abundance of dolphins in this area remained relatively stable between the two studies. Most dolphins were found in the northern part of the study area and there was very little exchange between the northern and southern areas of the state. The recapture data was also used to identify a spatial boundary between two putative management units that may be useful for future stock delineations. Additionally, an unexpected potential bias was introduced with the transition from slide film to digital media in the evaluation of the distinctiveness scoring.

scholarly journals Abundance and seasonal distribution of the Southern North Carolina estuarine system stock (USA) of common bottlenose dolphins (Tursiops truncatus)

2020 ◽  
Vol 21 (1) ◽  
pp. 33-43
Author(s):  
Daniela Silva
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Atlantic Coast ◽  
Population Decline ◽  
The United States ◽  
Estuarine System ◽  
Southern Boundary ◽  
Photo Identification

ABSTRACT   Under the U.S. Marine Mammal Protection Act, bottlenose dolphins [Tursiops truncatus] along the United States Atlantic coast are managed as a series of 17 distinct stocks.  To determine the status of each stock, the Potential Biological Removal (PBR) is compared with anthropogenic removals, primarily as a result of fisheries bycatch.  Estimates of abundance, with associated measures of variance, are required to generate the PBR for each stock.  The objectives of the current study were to estimate abundance for the Southern North Carolina Estuarine System Stock (SNCESS) of bottlenose dolphins and to refine the southern boundary of this stock.  To meet these objectives, photo-identification surveys were conducted during the summer and winter of 2014 in estuarine and nearshore coastal waters in southern North Carolina.  The surveys extended 25km south of the defined southern stock boundary, along the northern South Carolina coast.  One mark and one recapture survey were conducted for each season.  Each survey was completed in four or five days and covered over 300km of survey tracklines.  Dorsal fin images were processed and managed using FinBase, and only images of suitable quality and distinctiveness were used for estimates of abundance.  A three-step decision tree was used to assign each dolphin group to either the SNCESS or an adjacent coastal stock, based on sighting location, ranging patterns derived from matches to photo-identification catalogs, and statistical modeling.  Only sightings classified as SNCESS were used to estimate stock abundance.  Abundance estimates were calculated using three methods:  the Chapman modification to the Lincoln-Petersen method, package Rcapture in Program R, and program MARK 6.2.  The most parsimonious estimate was generated using the package Rcapture for program R, with the bias corrected M0 model yielding an estimate of 283 dolphins (CV = 0.33, 95% CI 170-396) in the summer of 2014.  The distribution of SNCESS dolphins shifted south in the winter and several individuals were observed up to 70km southwest of the currently recognized southern boundary.  The results of this study support the current definition of the SNCESS but suggest revisions to the southern boundary.  The SNCESS is the smallest bottlenose dolphin stock off the east coast of the USA and is at risk of population decline as a result of fisheries-related mortality.

Distribution of Bottlenose Dolphins (Tursiops truncatus) on the East Coast of Isla Margarita and the Los Frailes Archipelago, Venezuela

2005 ◽  
Vol 31 (4) ◽  
pp. 442-446 ◽  
Author(s):  
Lenin Oviedo ◽  
Noemi Silva ◽  
Luis Bermudez ◽  
Daniel K. Odell
Keyword(s):  
Tursiops Truncatus ◽  
East Coast ◽  
Bottlenose Dolphins

Seasonal Abundance and Site Fidelity of Bottlenose Dolphins (Tursiops truncatus) in Mississippi Sound

2004 ◽  
Vol 30 (2) ◽  
pp. 299-310 ◽  
Author(s):  
Carrie W. Hubard ◽  
Kathy Maze-Foley ◽  
Keith D. Mullin ◽  
William W. Schroeder
Keyword(s):  
Tursiops Truncatus ◽  
Site Fidelity ◽  
Bottlenose Dolphins ◽  
Seasonal Abundance ◽  
Mississippi Sound

Whale Poaching Detection Based on Microscopic Characteristics of Bottlenose Dolphins’ (Tursiops truncatus) Bone Fragments

2018 ◽  
Vol 43 (5) ◽  
pp. 519-528
Author(s):  
Manuela Zadravec ◽  
Zvonimir Kozarić ◽  
Snježana Kužir ◽  
Mario Mitak ◽  
Tomislav Gomerčić ◽  
...  
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Bone Fragments

Preliminary Analysis of the Proteome of Exhaled Breath Condensate in Bottlenose Dolphins (Tursiops truncatus)

2018 ◽  
Vol 44 (3) ◽  
pp. 256-266 ◽  
Author(s):  
Don R. Bergfelt ◽  
John Lippolis ◽  
Michel Vandenplas ◽  
Sydney Davis ◽  
Blake A. Miller ◽  
...  
Keyword(s):  
Preliminary Analysis ◽  
Tursiops Truncatus ◽  
Exhaled Breath Condensate ◽  
Bottlenose Dolphins ◽  
Exhaled Breath ◽  
Breath Condensate

Bottlenose Dolphins (Tursiops truncatus) Increase Number of Whistles When Feeding

2004 ◽  
Vol 30 (3) ◽  
pp. 357-362 ◽  
Author(s):  
Alejandro Acevedo-Gutiérrez ◽  
Sarah C. Stienessen
Keyword(s):  
Tursiops Truncatus ◽  
Bottlenose Dolphins
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