Long‐term passive acoustics to assess spatial and temporal vocalization patterns of Atlantic common bottlenose dolphins ( Tursiops truncatus ) in the May River estuary, South Carolina

2021 ◽  
Author(s):  
Alyssa D. Marian ◽  
Agnieszka Monczak ◽  
Brian C. Balmer ◽  
Leslie B. Hart ◽  
Jamileh Soueidan ◽  
...  
Keyword(s):  
South Carolina ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
River Estuary ◽  
Passive Acoustics

scholarly journals Occurrence of Brucella ceti in stranded bottlenose dolphins Tursiops truncatus coincides with calving season

2020 ◽  
Vol 141 ◽  
pp. 185-193
Author(s):  
WE McFee ◽  
D Wu ◽  
K Colegrove ◽  
K Terio ◽  
L Balthis ◽  
...  
Keyword(s):  
South Carolina ◽  
Tursiops Truncatus ◽  
Marine Mammals ◽  
Marine Bacterium ◽  
Bottlenose Dolphins ◽  
Global Public Health ◽  
Terrestrial Species ◽  
Long Term Study ◽  
Calving Season

Brucellosis is a disease caused by the Gram-negative facultative intracellular bacterium Brucella spp. In terrestrial species, this zoonotic bacterium is a global public health risk, but there is also concern over the zoonotic potential of marine forms, such as B. ceti, which affects cetaceans. Due to the detection of B. ceti in samples from bottlenose dolphins Tursiops truncatus during the 2010-2014 Gulf of Mexico Unusual Mortality Event, a long-term study of the prevalence of Brucella in stranded bottlenose dolphins from South Carolina, USA, was conducted. From 2012 through 2017, 282 stranded bottlenose dolphins were tested for B. ceti via real-time PCR. Nearly 32% of the dolphins tested positive in at least one sample (brain, lung, blowhole swab). Very little information exists in the literature on the occurrence of Brucella spp. in marine mammals, though in terrestrial species, such as cattle and elk, higher prevalence is often reported in spring. Similar results were found in this study with the peak occurrence being between March and June, a known period of calving in South Carolina. Results from this study provide important insights into the occurrence of the marine bacterium B. ceti.

Comparison of Short-Term Satellite Telemetry and Long-Term Photographic-Identification for Assessing Ranging Patterns of Individual Common Bottlenose Dolphins (Tursiops truncatus) in the Waters Around Charleston, South Carolina, USA

2021 ◽  
Vol 47 (4) ◽  
pp. 355-361
Author(s):  
Brian C. Balmer ◽  
Stephen D. McCulloch ◽  
Todd R. Speakman ◽  
Jeffrey Foster ◽  
Larry J. Hansen ◽  
...  
Keyword(s):  
South Carolina ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Satellite Telemetry ◽  
Short Term ◽  
Ranging Patterns

scholarly journals Strand-feeding by coastal bottlenose dolphins (Tursiops truncatus) in the Gulf of Guayaquil, Ecuador

2015 ◽  
Vol 10 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Pedro Jose Jiménez ◽  
Juan José Alava
Keyword(s):  
South Carolina ◽  
South America ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Photo Identification ◽  
The Pacific ◽  
Predatory Strategy ◽  
Gulf Of Guayaquil ◽  
Term Field

Strand-feeding as a predatory strategy was first observed in bottlenose dolphins, Tursiops truncatus, inhabiting waters of Spartina marshes of South Carolina and Georgia, United States. While a substantial body of documented observations exists for many regions of the world, current evidences and photo-documentation of these types of foraging behaviors by bottlenose dolphins in the Pacific coast of South America are scarce. To the best of our knowledge, behaviors resembling strand-feeding by bottlenose dolphins have been described very briefly without supporting photos in the inner estuary of the Gulf of Guayaquil. As a part of a long-term field study (2001-2011) on photo-identification, population ecology and monitoring of the bottlenose dolphin in the El Morro Mangrove and Wildlife Refuge, we provide some insights on its conservation, and photo-documented the occurrence of strand-feeding as a recurrent behavioral foraging tactic in this region of South America.

scholarly journals Capitoline Dolphins: Residency Patterns and Abundance Estimate of Tursiops truncatus at the Tiber River Estuary (Mediterranean Sea)

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 275
Author(s):  
Daniela Silvia Pace ◽  
Chiara Di Marco ◽  
Giancarlo Giacomini ◽  
Sara Ferri ◽  
Margherita Silvestri ◽  
...  
Keyword(s):  
Population Size ◽  
Tursiops Truncatus ◽  
Site Fidelity ◽  
Bottlenose Dolphins ◽  
River Estuary ◽  
Suitable Habitat ◽  
Tyrrhenian Sea ◽  
Abundance Estimate ◽  
Photo Identification ◽  
Tiber River

Periodic assessments of population status and trends to detect natural influences and human effects on coastal dolphin are often limited by lack of baseline information. Here, we investigated for the first time the site-fidelity patterns and estimated the population size of bottlenose dolphins (Tursiops truncatus) at the Tiber River estuary (central Mediterranean, Tyrrhenian Sea, Rome, Italy) between 2017 and 2020. We used photo-identification data and site-fidelity metrics to study the tendency of dolphins to remain in, or return to, the study area, and capture–recapture models to estimate the population abundance. In all, 347 unique individuals were identified. The hierarchical cluster analysis highlighted 3 clusters, labeled resident (individuals encountered at least five times, in three different months, over three distinct years; n = 42), part-time (individuals encountered at least on two occasions in a month, in at least two different years; n = 73), and transient (individuals encountered on more than one occasion, in more than 1 month, none of them in more than 1 year; n = 232), each characterized by site-fidelity metrics. Open POPAN modeling estimated a population size of 529 individuals (95% CI: 456–614), showing that the Capitoline (Roman) coastal area and nearby regions surrounding the Tiber River estuary represent an important, suitable habitat for bottlenose dolphins, despite their proximity to one of the major urban centers in the world (the city of Rome). Given the high number of individuals in the area and the presence of resident individuals with strong site fidelity, we suggest that conservation plans should not be focused only close to the Tiber River mouths but extended to cover a broader scale of area.

Serological Evidence of Exposure to Selected Viral, Bacterial, and Protozoal Pathogens in Free-Ranging Atlantic Bottlenose Dolphins (Tursiops truncatus) from the Indian River Lagoon, Florida, and Charleston, South Carolina

2009 ◽  
Vol 35 (2) ◽  
pp. 163-170 ◽  
Author(s):  
Adam M. Schaefer ◽  
John S. Reif ◽  
Juli D. Goldstein ◽  
Caitlin N. Ryan ◽  
Patricia A. Fair ◽  
...  
Keyword(s):  
South Carolina ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Indian River Lagoon ◽  
Serological Evidence ◽  
Indian River ◽  
Free Ranging

Observations of strand-feeding behavior by bottlenose dolphins (Tursiops truncatus) in Bull Creek, South Carolina

2008 ◽  
Vol 24 (1) ◽  
pp. 202-206 ◽  
Author(s):  
Erin E. Duffy-Echevarria ◽  
Richard C. Connor ◽  
David J. St. Aubin
Keyword(s):  
South Carolina ◽  
Feeding Behavior ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Bull Creek
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