scholarly journals A global checklist of the parasites of the harbor porpoise Phocoena phocoena, a critically-endangered species, including new findings from the Baltic Sea

2021 ◽  
Author(s):  
Joanna Dzido ◽  
Leszek Rolbiecki ◽  
Joanna N. Izdebska ◽  
Jerzy Rokicki ◽  
Tytus Kuczkowski ◽  
...  
Keyword(s):  
Endangered Species ◽  
Baltic Sea ◽  
Critically Endangered ◽  
Phocoena Phocoena ◽  
Harbor Porpoise ◽  
The Baltic Sea ◽  
Critically Endangered Species ◽  
New Findings ◽  
The Baltic

New Findings concerning the Structure of the Marine Atmospheric Boundary Layer over the Baltic Sea – Possible Implications for Wind Energy Installations

2003 ◽  
Vol 27 (6) ◽  
pp. 431-447 ◽  
Author(s):  
Ann-Sofi Smedman ◽  
Ulf Högström ◽  
Hans Bergström ◽  
Cecilia Johansson ◽  
Anna Sjöblom ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Wind Energy ◽  
Atmospheric Boundary Layer ◽  
Baltic Sea ◽  
Marine Atmospheric Boundary Layer ◽  
The Baltic Sea ◽  
New Findings ◽  
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.

Rhizopusmycosis in a Harbor Porpoise from the Baltic Sea

1999 ◽  
Vol 35 (3) ◽  
pp. 569-573 ◽  
Author(s):  
Arno Wünschmann ◽  
Ursula Siebert ◽  
Reinhard Weiss
Keyword(s):  
Baltic Sea ◽  
Harbor Porpoise ◽  
The Baltic Sea ◽  
The Baltic

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

Migrating silver eels return from the sea to the river of origin after a false start

2021 ◽  
Vol 17 (9) ◽  
pp. 20210346
Author(s):  
Meelis Tambets ◽  
Einar Kärgenberg ◽  
Ain Järvalt ◽  
Finn Økland ◽  
Martin Lykke Kristensen ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Sustainable Management ◽  
Spawning Migration ◽  
Sargasso Sea ◽  
The Baltic Sea ◽  
Critically Endangered Species ◽  
Silver Eels ◽  
False Start ◽  
The Baltic ◽  
Freshwater Resident

The European eel's singular spawning migration from European waters towards the Sargasso Sea remains elusive, including the early phase of migration at sea. During spawning migration, the movement of freshwater resident eels from river to sea has been thought to be irreversible. We report the first recorded incidents of eels returning to the river of origin after spending up to a year in the marine environment. After migrating to the Baltic Sea, 21% of the silver eels, tagged with acoustic transmitters, returned to the Narva River. Half returned 11–12 months after moving to the sea, with 15 km being the longest upstream movement. The returned eels spent up to 33 days in the river and migrated to the sea again. The fastest specimen migrated to the outlet of the Baltic Sea in 68 days after the second start—roughly 1300 km. The surprising occurrence of returning migrants has implications for sustainable management and protection of this critically endangered species.

Large-scale static acoustic survey of a low-density population—Estimating the abundance of the Baltic Sea harbor porpoise

2014 ◽  
Vol 136 (4) ◽  
pp. 2248-2248 ◽  
Author(s):  
Jens C. Koblitz ◽  
Mats Amundin ◽  
Julia Carlström ◽  
Len Thomas ◽  
Ida Carlén ◽  
...  
Keyword(s):  
Baltic Sea ◽  
Large Scale ◽  
Low Density ◽  
Acoustic Survey ◽  
Harbor Porpoise ◽  
The Baltic Sea ◽  
The Baltic ◽  
Density Population
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