Seasonal population parameters reveal sex‐related dynamics of common bottlenose dolphins in open waters of the southwestern Gulf of Mexico

2021 ◽  
Author(s):  
Jaime Bolaños‐Jiménez ◽  
Eduardo Morteo ◽  
Pedro F. Fruet ◽  
Christian A. Delfín‐Alfonso ◽  
Eduardo R. Secchi ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Bottlenose Dolphins ◽  
Population Parameters ◽  
Seasonal Population

Whistle source levels of free-ranging bottlenose dolphins and Atlantic spotted dolphins in the Gulf of Mexico

2014 ◽  
Vol 135 (3) ◽  
pp. 1624-1631 ◽  
Author(s):  
Adam S. Frankel ◽  
David Zeddies ◽  
Peter Simard ◽  
David Mann
Keyword(s):  
Gulf Of Mexico ◽  
Bottlenose Dolphins ◽  
Atlantic Spotted Dolphins ◽  
Free Ranging

scholarly journals AEROBIC MICROORGANISMS ASSOCIATED WITH FREE-RANGING BOTTLENOSE DOLPHINS IN COASTAL GULF OF MEXICO AND ATLANTIC OCEAN WATERS

2006 ◽  
Vol 42 (3) ◽  
pp. 536-544 ◽  
Author(s):  
John D. Buck ◽  
Randall S. Wells ◽  
Howard L. Rhinehart ◽  
Larry J. Hansen
Keyword(s):  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Bottlenose Dolphins ◽  
Free Ranging

Influence of artisanal fisheries on the behaviour and social structure of Tursiops truncatus in the South-western Gulf of Mexico

2019 ◽  
Vol 99 (8) ◽  
pp. 1841-1849
Author(s):  
Nataly Morales-Rincon ◽  
Eduardo Morteo ◽  
Christian Alejandro Delfín-Alfonso
Keyword(s):  
Gulf Of Mexico ◽  
Group Size ◽  
Age Structure ◽  
Human Activities ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Vantage Point ◽  
Competitive Interactions ◽  
Artisanal Fisheries ◽  
Behavioural Plasticity

AbstractBehavioural plasticity in animals is tested whenever competitive interactions for space and/or food resources occur between wildlife and human activities. This study uses the concepts of operational and non-operational interactions between bottlenose dolphins (Tursiops truncatus) and artisanal fisheries in Alvarado, to search for differences in behaviour, age structure and group size. We conducted 20 surveys between 2015 and 2016, and recorded 64 groups by means of scan sampling from either a research boat or a fixed vantage point. Average dolphin group size was small (${\bar{\rm x}}$ = 3.2, SD = 2.2 individuals) and fewer individuals were commonly present when interaction with fisheries occurred. Operational interactions were defined within the first 30 m and occurred mainly with lone individuals (54% recorded from the lighthouse and 82% during surveys); this benchmark also accounted for higher frequencies in locomotion and feeding (χ2 = 83.10; df = 7; P < 0.001). We found a higher rate of new behavioural events for dolphin groups furthest from human activities, as well as a decrease in behaviours that imply greater body exposure as dolphins approach the fishing spots. Age structure and dolphin group size were not different during and in the absence of interaction with fisheries, but most interactions involved male dolphins. Behavioural variations in the dolphins' repertoire are likely a strategy to reduce the risk of injuries or death when interacting with human activities; these dolphins seem to have habituated to or at least tolerate fishing activities within the study area, possibly constituting a sex-biased pressure.

scholarly journals Skin Transcriptomes of common bottlenose dolphins (Tursiops truncatus) from the northern Gulf of Mexico and southeastern U.S. Atlantic coasts

2018 ◽  
Vol 38 ◽  
pp. 45-58 ◽  
Author(s):  
Marion G. Neely ◽  
Jeanine S. Morey ◽  
Paul Anderson ◽  
Brian C. Balmer ◽  
Gina M. Ylitalo ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins ◽  
Northern Gulf Of Mexico

MORBILLIVIRUS INFECTION IN BOTTLENOSE DOLPHINS: EVIDENCE FOR RECURRENT EPIZOOTICS IN THE WESTERN ATLANTIC AND GULF OF MEXICO

2006 ◽  
Vol 12 (4) ◽  
pp. 499-515 ◽  
Author(s):  
Pádraig J. Duignan ◽  
Carol House ◽  
Daniel K. Odell ◽  
Randall S. Wells ◽  
Larry J. Hansen ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Bottlenose Dolphins ◽  
Western Atlantic

scholarly journals Angiomatosis, A Newly Recognized Disease in Atlantic Bottlenose Dolphins (Tursiops truncatus) from the Gulf of Mexico

1999 ◽  
Vol 36 (1) ◽  
pp. 28-34 ◽  
Author(s):  
B. S. Turnbull ◽  
D. F. Cowan
Keyword(s):  
Gulf Of Mexico ◽  
Tursiops Truncatus ◽  
Bottlenose Dolphins

scholarly journals Morbilliviral Epizootic in Bottlenose Dolphins of the Gulf of Mexico

1996 ◽  
Vol 8 (3) ◽  
pp. 283-290 ◽  
Author(s):  
Thomas P. Lipscomb ◽  
Seamus Kennedy ◽  
Deborah Moffett ◽  
Amy Krafft ◽  
Brenda A. Klaunberg ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Inclusion Bodies ◽  
Bottlenose Dolphins ◽  
Rt Pcr ◽  
Intranuclear Inclusion ◽  
Intracytoplasmic Inclusion ◽  
Formalin Fixed Paraffin ◽  
Formalin Fixed Paraffin Embedded ◽  
Intracytoplasmic Inclusion Bodies ◽  
Formalin Fixed

Morbillivirus infection was diagnosed in 35/67 bottlenose dolphins (Tursiops truncatus) from the Gulf of Mexico that stranded from October 1993 through April 1994 in Alabama, Mississippi, and Texas (USA) during periods of increased dolphin standings in each of the 3 states. Diagnosis was based on histologic lesions, immunohistochemical demonstration of morbilliviral antigen, and detection of morbilliviral RNA by a reverse transcriptase polymerase chain reaction (RT-PCR) test performed on formalin-fixed, paraffin-embedded tissue (5 dolphins), on histologic lesions and detection of morbilliviral RNA by RT-PCR performed on formalin-fixed, paraffin-embedded tissue (1 dolphin), and on detection of morbilliviral RNA by RT-PCR performed on unfixed lung samples collected from carcasses with advanced postmortem autolysis (29 dolphins). Histologic lesions included proliferative interstitial pneumonia with syncytial cells and eosinophilic intranuclear and intracytoplasmic inclusion bodies, lymphoid depletion and syncytial cells with eosinophilic intranuclear inclusion bodies in lymph nodes, eosinophilic intracytoplasmic inclusion bodies in transitional epithelium of urinary bladder, and a syncytial cell with eosinophilic intranuclear inclusion bodies in epidermis. Concomitant pulmonary aspergillosis was diagnosed histologically in 4 dolphins. This is the 5th reported morbilliviral epizootic of aquatic mammals and the 2nd involving bottlenose dolphins in the United States.

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