Post-Glacial immigration of the harbour porpoise (Phocoena phocoena) into the Baltic Sea*

Boreas ◽  
2008 ◽  
Vol 37 (3) ◽  
pp. 458-464 ◽  
Author(s):  
ROBERT S. SOMMER ◽  
JULIANE PASOLD ◽  
ULRICH SCHMÖLCKE
Keyword(s):  
Baltic Sea ◽  
Harbour Porpoise ◽  
Phocoena Phocoena ◽  
The Baltic Sea ◽  
The Baltic

scholarly journals Nematode Parasites in Baltic Sea Mammals, Grey Seal (Halichoerus grypus (Fabricius, 1791)) and Harbour Porpoise (Phocoena phocoena (L.)), from the German Coast

2020 ◽  
Author(s):  
Michael Gabel ◽  
Stefan Theisen ◽  
Harry Wilhelm Palm ◽  
Michael Dähne ◽  
Patrick Unger
Keyword(s):  
Baltic Sea ◽  
Parasite Species ◽  
Parasite Fauna ◽  
Eastern Coast ◽  
Halichoerus Grypus ◽  
Phocoena Phocoena ◽  
The Baltic Sea ◽  
Nematode Parasites ◽  
The Baltic ◽  
Anisakid Nematodes

Abstract Purpose Endoparasitic nematodes of six harbour porpoises Phocoena phocoena and four grey seals Halichoerus grypus, stranded at the eastern coast of the Baltic Sea in Germany in winter 2019, were analysed in order to identify nematode parasites and to compare with recent studies from the same area. Methods Endoparasitic nematodes were identified by using both morphological and molecular characters. The successfully obtained sequences of the rDNA marker regions ITS-1, 5.8S, ITS-2 from 29 anisakid and the rDNA marker region ITS-2 of 11 pseudalid nematodes were amplified. Results Analyses revealed the presence of three parasite species, the anisakid nematode Contracaecum osculatum from grey seals and the pseudalid nematodes Pseudalius inflexus and Stenurus minor from the harbour porpoises. Other anisakid nematodes regularly occurring in the Baltic Sea, e.g. Anisakis simplex or Pseudoterranova decipiens, were not found. Conclusions The prevalence of 100% and a severe parasite load in grey seals demonstrated a very high C. osculatum infection of Baltic Sea fish as their regular prey. Prevalence of 33% for parasites in harbour porpoises and minor infection rates, combined with a distinct lack of anisakid nematodes, are typical for the current situation of the porpoise parasite fauna in the Baltic Sea. Invasive parasite species as possible indicators for climate change could not be detected.

scholarly journals Fatty Acid Composition in Blubber, Liver, and Muscle of Marine Mammals in the Southern Baltic Sea

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1509
Author(s):  
Dirk Dannenberger ◽  
Ramona Möller ◽  
Linda Westphal ◽  
Timo Moritz ◽  
Michael Dähne ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Baltic Sea ◽  
Total Fatty Acid ◽  
Acid Content ◽  
Fatty Acid Content ◽  
Harbour Porpoise ◽  
Total Fatty Acid Content ◽  
The Baltic Sea ◽  
Top Predators ◽  
The Baltic

To date, only limited results on the fatty composition in different tissues of the top predators in the Baltic Sea are available. In the current study, tissue samples of blubber, skeletal muscle, and liver from 8 harbour porpoise (Phocoena phocoena) and 17 grey seals (Halichoerus grypus) in the Baltic Sea off Mecklenburg-Western Pomerania were included in the investigation. While the total fatty acid content in liver and blubber tissue revealed no differences between both species, the total fatty acid content of muscle tissue was significantly differentand showed higher concentrations in harbour porpoise muscle compared with grey seals. The most abundant fatty acids in the blubber of grey seals and harbour porpoises (18:1cis-9, 16:1cis-9, 16:0 and 22:6n-3) were present in similar quantities and ratios to each other as known from other marine top predators. If future studies can show that differences in tissue fatty acid content are caused by variation in the nutritional status, and this may lead to the development of a more objective assessment of body condition in seals and porpoises recovered via stranding schemes.

scholarly journals Blast injury on harbour porpoises (Phocoena phocoena) from the Baltic Sea after explosions of deposits of World War II ammunition

2022 ◽  
Vol 159 ◽  
pp. 107014
Author(s):  
Ursula Siebert ◽  
Julian Stürznickel ◽  
Tobias Schaffeld ◽  
Ralf Oheim ◽  
Tim Rolvien ◽  
...  
Keyword(s):  
World War Ii ◽  
Baltic Sea ◽  
Blast Injury ◽  
Phocoena Phocoena ◽  
World War ◽  
The Baltic Sea ◽  
The Baltic
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