scholarly journals Structure of intestinal helminth communities of the striped dolphin, Stenella coeruleoalba, in the western Mediterranean: a long-term analysis

2016 ◽  
Vol 3 ◽  
Author(s):  
Aznar Francisco ◽  
Sanz Tamarit Ruth ◽  
Mateu Puncel Paula ◽  
Cervera Estevan Carlos ◽  
Fraija Fernández Natalia ◽  
...  
Keyword(s):  
Western Mediterranean ◽  
Intestinal Helminth ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Helminth Communities ◽  
Term Analysis

Food of striped dolphin, Stenella coeruleoalba, in the Ligurian Sea

1993 ◽  
Vol 73 (3) ◽  
pp. 571-578 ◽  
Author(s):  
M. Würtz ◽  
D. Marrale
Keyword(s):  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Important Food ◽  
Ligurian Sea ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Western Mediterranean Sea ◽  
Bony Fishes ◽  
Food Species ◽  
Ligurian Coast

The stomachsof 23 striped dolphins (Stenella coeruleoalba Meyen, 1833, Cetacea), stranded along the Ligurian coast (western Mediterranean Sea), contained 32 species of cephalopods, crustaceans and fishes, totalling an estimated 2,723 prey specimens representing about 36 kg in weight. Cephalopods and bony fishes were equally important in the diet (50%). Todarodes sagittatus (34.5%) and Micromesistius poutassou (25.9%) were found to be the most important food species. Other species belonging to six cephalopod families, three crustacean families and nine bony fish families, contributed to the diet with variable numbers, weights, and occurrences, demonstrating the opportunistic character of striped dolphin feeding.

Transmission and Predictors of Burden of Lungworms of the Striped Dolphin (Stenella coeruleoalba) in the Western Mediterranean

2020 ◽  
Vol 56 (1) ◽  
pp. 186
Author(s):  
Rachel Pool ◽  
Nilani Chandradeva ◽  
Georgios Gkafas ◽  
Juan Antonio Raga ◽  
Mercedes Fernández ◽  
...  
Keyword(s):  
Western Mediterranean ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin

Calving and early mortality in the western Mediterranean striped dolphin, Stenella coeruleoalba

1991 ◽  
Vol 69 (5) ◽  
pp. 1408-1412 ◽  
Author(s):  
Alex Aguilar
Keyword(s):  
Western Mediterranean ◽  
Optimum Conditions ◽  
Initial Value ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Clear Peak ◽  
The Mean ◽  
Time Of Year ◽  
Using Data ◽  
And Coping

Foetal growth and associated calving parameters for the northwestern Mediterranean striped dolphin (Stenella coeruleoalba) population were studied using data from 437 strandings. Births occurred during autumn and length of calves was estimated as 92.5 cm, which corresponds to a weight of 11.3 kg. Calving was estimated to peak in mid-October according to the Huggett and Widdas model, and in mid-September according to the mean date of births for the population. In the western Mediterranean, calving in autumn coincides with the time of year when waters are warmest and precedes a peak of productivity, both of which provide optimum conditions for feeding and coping with the energetic demands of lactation. The frequency of strandings shows a clear peak in September–November, which suggests that mortality of neonates and of calves early in lactation is much higher than that of juveniles and calves during mid or late lactation. Consistent with previous studies on the genus Stenella, the sex ratio favoured males, falling from an initial value of 1.4 in foetuses to almost 1 postweaning.

scholarly journals Composition and diversity of helminth communities in eels Anguilla anguilla in the River Tiber: long-term changes and comparison with insular Europe

1998 ◽  
Vol 72 (4) ◽  
pp. 301-306 ◽  
Author(s):  
C.R. Kennedy ◽  
F. Berrilli ◽  
D. Di Cave ◽  
C. De Liberato ◽  
P. Orecchia
Keyword(s):  
Anguilla Anguilla ◽  
Intestinal Helminth ◽  
European Eel ◽  
British Isles ◽  
Helminth Communities ◽  
Composition And Structure ◽  
Using Data ◽  
The Uk ◽  
Freshwater Eels

AbstractMost studies of helminth communities in the European eel Anguilla anguilla have been undertaken in the British Isles, and there are very few analyses of community composition and structure from continental Europe. To fill this gap and test the hypothesis that helminth communities in freshwater eels in the British Isles are not typical of those of continental Europe, helminth communities of eels in the River Tiber below Rome were analysed by season using data collected in 1980 and new data from 1996. The intestinal helminth communities in the Tiber eels were species poor and characterized by low diversity. Most eels harboured one or no parasite species and communities were heavily dominated by the acanthocephalan Acanthocephalus clavula. Intestinal helminth infra-community richness and diversity did not differ between seasons within a year or between the same seasons in 1980 and 1996, although some changes in composition were apparent. Intestinal infracommunities from Tiber eels were very similar in characteristics to those analysed from the British Isles, and their temporal changes also showed close similarities to those reported from rivers in the UK. It seems likely therefore that conclusions derived from British studies can be applied to helminth communities of eels on the continent.

Long-term changes (1990-2012) in the diet of striped dolphins Stenella coeruleoalba from the western Mediterranean

2017 ◽  
Vol 568 ◽  
pp. 231-247 ◽  
Author(s):  
FJ Aznar ◽  
R Míguez-Lozano ◽  
B Ruiz ◽  
AB de Castro ◽  
JA Raga ◽  
...  
Keyword(s):  
Western Mediterranean ◽  
Stenella Coeruleoalba ◽  
Long Term Changes

Marine mammals are natural hosts of Oceanivirga salmonicida, a bacterial pathogen of Atlantic salmon

2020 ◽  
Vol 139 ◽  
pp. 161-174
Author(s):  
R Palmer ◽  
GTA Fleming ◽  
S Glaeser ◽  
T Semmler ◽  
A Flamm ◽  
...  
Keyword(s):  
16S Rrna ◽  
Atlantic Salmon ◽  
16S Rrna Gene ◽  
Marine Mammals ◽  
Rrna Gene ◽  
Bacterial Disease ◽  
Common Dolphin ◽  
Stenella Coeruleoalba ◽  
Striped Dolphin ◽  
Natural Hosts

During 1992 and 1993, a bacterial disease occurred in a seawater Atlantic salmon Salmo salar farm, causing serious mortalities. The causative agent was subsequently named as Oceanivirga salmonicida, a member of the Leptotrichiaceae. Searches of 16S rRNA gene sequence databases have shown sequence similarities between O. salmonicida and uncultured bacterial clones from the digestive tracts of marine mammals. In the current study, oral samples were taken from stranded dolphins (common dolphin Delphinus delphis, striped dolphin Stenella coeruleoalba) and healthy harbour seals Phoca vitulina. A bacterium with growth characteristics consistent with O. salmonicida was isolated from a common dolphin. The isolate was confirmed as O. salmonicida, by comparisons to the type strain, using 16S rRNA gene, gyrB, groEL, and recA sequence analyses, average nucleotide identity analysis, and MALDI-TOF mass spectrometry. Metagenomic analysis indicated that the genus Oceanivirga represented a significant component of the oral bacterial microbiomes of the dolphins and seals. However, sequences consistent with O. salmonicida were only found in the dolphin samples. Analyses of marine mammal microbiome studies in the NCBI databases showed sequences consistent with O. salmonicida from the common dolphin, striped dolphin, bottlenose dolphin Tursiops truncatus, humpback whale Megaptera novaeangliae, and harbour seal. Sequences from marine environmental studies in the NCBI databases showed no sequences consistent with O. salmonicida. The findings suggest that several species of marine mammals are natural hosts of O. salmonicida.

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