scholarly journals Double-faced monster in the bottlenosed dolphin (Tursiops truncatus) found in the Mediterranean sea

2004 ◽  
Vol 154 (10) ◽  
pp. 306-308 ◽  
Author(s):  
W. Dabin ◽  
C. Cesarini ◽  
I. Clemenceau ◽  
F. Dhermain ◽  
T. Jauniaux ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Tursiops Truncatus ◽  
Bottlenosed Dolphin ◽  
The Mediterranean

scholarly journals Long-term monitoring for the surveillance of the conservation status of Tursiops truncatus in an EU Natura2000 site in the Mediterranean Sea. A pilot study in the Tuscan Archipelago

2021 ◽  
Author(s):  
ANTONELLA ARCANGELI ◽  
ROBERTO CROSTI ◽  
ILARIA CAMPANA ◽  
LARA CAROSSO ◽  
MARTINA GREGORIETTI ◽  
...  
Keyword(s):  
Pilot Study ◽  
Mediterranean Sea ◽  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Conservation Status ◽  
Natura 2000 ◽  
Research Network ◽  
Habitats Directive ◽  
Common Bottlenose Dolphin ◽  
The Mediterranean

A pilot study, using the dataset from the research network ‘FLT Med Net’, which regularly monitors transborder regions in the Mediterranean Sea using ferries as platform for systematic surveys, was undertaken to assess common bottlenose dolphin range and population trends within the Natura 2000 EU marine site “Tutela del Tursiops truncatus”. The site was recently designated by the Tuscany Region (Italy) within the requirement of the EU Habitats Directive. In order to evaluate the conservation status of bottlenose dolphin according to the surveillance scheme of the Directive, two six-year periods (2007-2012; 2013-2018) were compared to assess trends in distribution-occurrence (range); Sightings Per Unit of Effort and Density (population). In total, 18146 NM were surveyed along two fixed transects, recording 90 sightings of Tursiops truncatus and a total of 268 specimens. Between the two periods, slight but not statistically significant differences were assessed, with decreasing trend in range and population  of the species; no variation was detected in mean group sizes. Travelling was the most common behaviour, and juveniles were present in 20% of the sightings, concentrated during spring and summer. The consistent FLT Med Net dataset was found to be appropriate to evaluate important parameters for the assessment of trends in the conservation status of Tursiops truncatus at the Natura2000 site scale. 

scholarly journals First case of erysipelas in a free-ranging bottlenose dolphin (Tursiops truncatus) stranded in the Mediterranean Sea

2011 ◽  
Vol 97 (2) ◽  
pp. 167-170 ◽  
Author(s):  
M Melero ◽  
C Rubio-Guerri ◽  
JL Crespo ◽  
M Arbelo ◽  
AI Vela ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
First Case ◽  
The Mediterranean ◽  
Free Ranging

scholarly journals Isolation of Leptospira interrogans from a Bottlenose Dolphin (Tursiops truncatus) in the Mediterranean Sea

2020 ◽  
Vol 56 (3) ◽  
pp. 727 ◽  
Author(s):  
Ivana Piredda ◽  
Bruna Palmas ◽  
Malgorzata Noworol ◽  
Sebastiana Tola ◽  
Carla Longheu ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Bottlenose Dolphin ◽  
Tursiops Truncatus ◽  
Leptospira Interrogans ◽  
The Mediterranean

scholarly journals Model-Based Distribution and Abundance of Three Delphinidae in the Mediterranean

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 260
Author(s):  
Grigorios Karamitros ◽  
Georgios A. Gkafas ◽  
Ioannis A. Giantsis ◽  
Petros Martsikalis ◽  
Menelaos Kavouras ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Tursiops Truncatus ◽  
Marine Mammals ◽  
Distance Sampling ◽  
Additive Model ◽  
Stenella Coeruleoalba ◽  
Delphinus Delphis ◽  
Model Based ◽  
Transect Line ◽  
The Mediterranean

Monitoring of Delphinidae species population patterns in the Mediterranean Sea was carried out in a sequence of surveys employing different approaches. Data from seven-year surveys with small catamaran sailing boats were analyzed under model-based approaches. Density Surface Models were used to produce spatial distribution prediction of three Delphinidae species (Stenella coeruleoalba, Tursiops truncatus, and Delphinus delphis) in an extended study area covering much of the Mediterranean Sea. A classical distance sampling protocol was applied in order to calculate the detection probability of clusters. Static (depth, slope, distance from the coast, and distance from isobaths of 200 m) and nonstatic (sea surface temperature and chlorophyll) variables were used to predict the species distribution/abundance in a generalized additive model context. Stenella coeruleoalba was found to be the dominant species, with an extended distribution in the study area; its abundance was significantly affected by both depth and distance. Tursiops truncatus and Delphinus delphis illustrated a significant abundance correlation with depth and chlorophyll, respectively, while both species showed a robust longitude correlation. Our model pinpoints the significance of nondesigned transect line surveys, suggesting the importance of specific habitat areas for future monitoring and conservation aspects of marine mammals.

scholarly journals Monitoring the habitat use of common Bottlenose Dolphins (Tursiops truncatus) using passive acoustics in a Mediterranean marine protected area

2014 ◽  
Vol 15 (2) ◽  
pp. 327 ◽  
Author(s):  
G. LA MANNA ◽  
M. MANGHI ◽  
G. SARA
Keyword(s):  
Habitat Use ◽  
Mediterranean Sea ◽  
Protected Area ◽  
Tursiops Truncatus ◽  
Acoustic Analysis ◽  
Marine Protected Area ◽  
Prey Availability ◽  
Bottlenose Dolphins ◽  
Boat Traffic ◽  
The Mediterranean

The Mediterranean Tursiops truncatus subpopulation has been classified as Vulnerable on the IUCN Red List because of its decline. This species in coastal areas is exposed to a wide variety of threats: directed kills, bycatch, reduced prey availability caused by environmental degradation and overfishing, habitat degradation including disturbances from boat traffic and noise. Despite the increase in boat traffic in the Mediterranean Sea, the effect on T. truncatus’ habitat use has been studied in little detail and few data have been published. This study represents the first attempt to characterise spatial and temporal habitat use by T. truncatus and its relation to boat traffic in the Isole Pelagie Marine Protected Area (Italy) on the basis of an originally developed passive acoustic monitoring system (PAM). The devices were deployed in 2 areas in the southern waters of Lampedusa, during 2 separate years (2006 and 2009), each time for 3 months (from July to September) and in 6 time slots (3 diurnal and 3 nocturnal). Acoustic analysis showed that T. truncatus used the Southern coastal area of Lampedusa independently of the year, primarily during the early summer, a period coinciding with the peak of calving season. Dolphin occurrences appeared independent of boat traffic, with the exception of the smallest temporal scale (time slots): dolphin occurrences were more prevalent during the night when the level of boat traffic was lower. This study provides evidence on T. truncatus habitat use in the Mediterranean Sea and reveals that boat traffic could be one of the factors influencing it, thus stressing the need for further detailed investigation regarding this topic.

Aeromonas dhakensis pneumonia and sepsis in a neonate Risso’s dolphin Grampus griseus from the Mediterranean Sea

2015 ◽  
Vol 116 (1) ◽  
pp. 69-74 ◽  
Author(s):  
L Pérez ◽  
ML Abarca ◽  
F Latif-Eugenín ◽  
R Beaz-Hidalgo ◽  
MJ Figueras ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Grampus Griseus ◽  
The Mediterranean ◽  
Risso's Dolphin
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