Vergleichende Untersuchung der B�rzeldr�senlipide von M�wen. Zusammensetzung der B�rzellipide der Lachm�we (Larus ridibundus), Heringsm�we (Larus fuscus) und Silberm�we (Larus argentatus)

1972 ◽  
Vol 261 (4-5) ◽  
pp. 306-309 ◽  
Author(s):  
A. Zeman ◽  
J. Jacob
Keyword(s):  
Larus Argentatus ◽  
Larus Ridibundus ◽  
Larus Fuscus ◽  
Vergleichende Untersuchung

Contributions to the Breeding Biology of Larus argentatus and Larus fuscus

Bird-Banding ◽  
1952 ◽  
Vol 23 (1) ◽  
pp. 45
Author(s):  
D. S. Farner ◽  
Knud Paludan
Keyword(s):  
Breeding Biology ◽  
Larus Argentatus ◽  
Larus Fuscus

Helminth Parasites of Three Species of British Gulls, Larus argentatus Pont., L. fuscus L. and L. ridibundus L.

1963 ◽  
Vol 37 (1-2) ◽  
pp. 57-88 ◽  
Author(s):  
R. T. Pemberton
Keyword(s):  
Parasite Species ◽  
Larus Argentatus ◽  
Helminth Parasites ◽  
Larus Ridibundus

The results of the examination for helminth parasites of 146 Larus ridibundus, ten L. argentalus and eight L. fuscus are presented. Thirty-six parasite species were found, 27 from L. ridibundus, 21 from L. argentatus and 19 from L. fuscus. The trematodes Apophallus muhlingi, Aporchis massiliensis, Brachylecithum microtesticulatum, Knipowitschetrema echinatum, and Philophthalmus lucipetus are described. A list of British records of helminth parasites from L. ridibundus, L. argentatus and L. fuscus is appended.

scholarly journals Population trends and status of four seabird species (Uria aalge, Alca torda, Larus fuscus, Larus argentatus) at Stora Karlsö in the Baltic Sea

Ornis Svecica ◽  
2017 ◽  
Vol 27 (2–4) ◽  
Author(s):  
Olof Olsson ◽  
Jonas Hentati-Sundberg
Keyword(s):  
Baltic Sea ◽  
Larus Argentatus ◽  
Herring Gull ◽  
Uria Aalge ◽  
The Baltic Sea ◽  
Alca Torda ◽  
Seabird Species ◽  
Larus Fuscus ◽  
The Baltic ◽  
Annual Decline

The island of Stora Karlsö hosts the largest colonies of fish-eating seabirds in the Baltic Sea. However, recent and reliable estimates of the number of breeding pairs of the main species have been missing. Based on a complete census in 2014, we estimated the number of Common Guillemots Uria aalge to 15,700 pairs, more than half (up to 70%) of the Baltic Sea population. The number has almost tripled since the early 1970s and the increase has been particularly strong the last 11 years, with an annual increase of 5.1%. We counted 24,600 individual adult Razorbills Alca torda and estimated it to correspond to a maximum of 12,300 pairs in 2015–2016 (census over two seasons). The colony has grown strongly; on average by 5.6% annually since the early 1970s, and Stora Karlsö now hosts up to 30% of the Baltic Sea population. Stora Karlsö also hosts colonies with about 300 pairs each of Lesser Black-backed Gull Larus fuscus and Herring Gull Larus argentatus. The gulls’ trends are negative, with an average annual decline the last 10-year period by 5.0% and 6.2%, respectively.

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