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 Common Seals  

Information on Dead Seals 

Status Reports No. 29 - 36 
(September 2002)

 
Common Wadden Sea Secretariat, Wilhelmshaven
Recent Status Reports
 
Reports September 2002
Status Report No. 36 (27.09.02)
Status Report No. 35 (24.09.02)
Status Report No. 34 (20.09.02)
Status Report No. 33 (13.09.02)
Status Report No. 32 (10.09.02)
Status Report No. 31 (06.09.02)
Status Report No. 30 (03.09.02)
Status Report No. 29 (02.09.02)

Status Report No. 36 (27.09.2002):

NEWS – Denmark

The results of the investigations of the samples of dead common seals found in the Limfjord (in total 23 dead seals found in September) and in the Danish Baltic Sea area at the coast of Falster, Møn and South-Lolland (in total 11 dead seals found in September) have not come in yet.

NEWS – Belgium

The high stranding number of dead common seals in Belgium has not continued over the last days.

NEWS – United Kingdom

Between 18 September and 24 September, 308 dead seals have been reported around the UK bringing it up to a total of 1,794 since the beginning of the outbreak. The majority of these (1,603) have been from the English coast. In England, 59 post-mortem examinations have been carried out, 31 have been confirmed as positive for pdv, four have been confirmed as negative for pdv and the results from 24 post-mortems are pending. See map below for regional information on reported dead seals and confirmed pdv cases in England. Seals that died in rehabilitation centers after a period greater than one week have been excluded from these data. In Scotland, there has now been a total of 114 reported dead seals (18 common seals, 20 grey seals and 76 species indeterminate). Nine post-mortem examinations have been carried out and two are pending, but all tests to date have been negative for pdv. In Wales, a total of 49 dead seals have been reported and one post-mortem examination carried out that showed no signs of pdv, although further test results are awaited. A total of 28 dead seals have been reported from Northern Ireland, one post-mortem examination has been carried out and the results are pending.  

(26.09.2002 Sea Mammal Research Unit, St. Andrews, UK)

 

Table: Seal Epidemic 2002

Overview of registered dead seals in the Wadden Sea, the North Sea and the Kattegat-Skagerrak and Baltic Sea area

 

First date of occurrence of unusual mortality

Number of
dead common seals (until date)

Wadden Sea

 

 

Netherlands

16 June 2002

1,874 (26.09.02)

Lower Saxony

17 July 2002

2,930 (26.09.02)

Hamburg

21 August 2002

173 (26.09.02)

Schleswig-Holstein

26 August 2002

1,992 (26.09.02)

Denmark

30 August 2002

650 (26.09.02)

Wadden Sea Total

 

7,619

 

 

 

Helgoland

11 August 2002

224 (25.09.02)

 

 

 

Kattegat/Skagerrak

 

 

Danish Kattegat / Oresund

07 May 2002

2,016 (26.09.02)

Swedish Kattegat / Skagerrak

30 May 2002

about 4,000 (06.09.02)

Norwegian Skagerrak

22 June 2002

878 (23.09.02)

Kattegat/Skagerrak Total

 

about 6.900

 

 

 

DK- Limfjord

(pdv not yet confirmed)

23 (in September)

 

 

 

Baltic Sea

 

 

Danish Baltic Sea:              Falster, Møn, South-Lolland

(pdv not yet confirmed)

11 (in September)

German Baltic Sea coast Mecklenburg-Western Pomerania

30 August 2002

7 (26.09.02)

 

 

 

Belgium/France

31 July 02 (France) /

18 August 02 (Belgium)

19 (24.09.02)

 

 

 

United Kingdom
(common and grey seals)

13 August 2002

1,794 (26.09.02)

 

 

 

All Areas                   TOTAL

 

about 16,600

 

Remark:
All Status Reports are also published on the homepage: http://www.waddensea-secretariat.org

Compiled by:
Bettina Reineking
Common Wadden Sea Secretariat
Wilhelmshaven
R
eineking@waddensea-secretariat.org

phone: +49 4421 9108 14

 

Status Report No. 35 (24.09.2002):

NEWS – Kattegat-Skagerrag area

According to Danish, Swedish and Norwegian information the epizootic seems to be mainly over in the Kattegat/Skagerrak area, and only single new/fresh carcasses have been registered in that area.

NEWS – German Baltic Sea

The two dead common seals, which had been found east of the peninsula Zingst at the German Baltic coast in Mecklenburg-Western Pomerania on 30.08 and 01.09., were tested with the Polymerase-Chani-Reaction-method (PCR) with positive results of pdv last week. Additionally, four seals were found with suspicion on pd virus in mid September at the German Baltic coast in Mecklenburg-Western Pomerania and samples will be investigated. Since the end of August, in total six dead common seals have been registered at the German Baltic coast in Mecklenburg-Western Pomerania.

NEWS – Denmark

The results of the investigations of the samples of dead common seals found in the Limfjord and at the coast of South-Lolland  have not come in yet.

NEWS – Belgium

In Belgium, there is no common seal colony and only a few animals are normally observed in Belgian waters. Each year between 5 and 20 pups of common seals, and a lesser number of grey seal pups strand here.

From 18 August to 15 September, 4 dead seals washed ashore. Two of these animals were Morbillivirus positive (see Seal Report 29 from 02.09.02). One of these showed all symptoms of pdv-infection-related death, although this seal had been vaccinated before. One seal pup, originating from France, died at the Sea Life Rehabilitation Center Blankenberge (Belgium) on 31.07.02.  Also this seal was Morbillivirus infection positive (see Seal Report 26 from 21 08.02).
Between 18 and 21 September, another two dead seals washed ashore, and one dead seal was observed offshore. On 22 September, eight dead seals, all in a (very) advanced state of decomposition, washed ashore. The animals must have drifted in the North Sea for at least a week.  One pup, which was brought to the Sea Life Rehabilitation Center some days before, died there. The autopsy of this animal revealed all symptoms related to pdv infection. Yesterday (23/9) and today (24/9) up to midday, another four seals washed ashore, one very decomposed, and three very fresh animals. The latter ones possibly originated from a different colony (Zeeland, The Netherlands ?) than the ones that washed ashore on 22/9.
The total number of seals washed ashore since 18 August is 19, of which 15 washed ashore during the past seven days.

(Jan Haelters, Management Unit of the North Sea Mathematical Models, Royal Belgian Institute of Natural Sciences, Oostende, Belgium)

Table: Seal Epidemic 2002

Overview of registered dead seals in the Wadden Sea, the North Sea and the Kattegat-Skagerrak area

 

First date of occurrence of unusual mortality

Number of
dead common seals (until date)

Wadden Sea

 

 

Netherlands

16 June 2002

1,749 (23.09.02)

Lower Saxony

17 July 2002

2,721 (24.09.02)

Hamburg

21 August 2002

155 (23.09.02)

Schleswig-Holstein

26 August 2002

1,735 (23.09.02)

Denmark

30 August 2002

583 (23.09.02)

Wadden Sea Total

 

6,943

 

 

 

Helgoland

11 August 2002

221 (23.09.02)

 

 

 

Kattegat/Skagerrak

 

 

Danish Kattegat / Oresund

07 May 2002

1,990 (18.09.02)

Swedish Kattegat / Skagerrak

30 May 2002

about 4,000 (06.09.02)

Norwegian Skagerrak

22 June 2002

878 (23.09.02)

Kattegat/Skagerrak Total

 

about 6.900

 

 

 

DK- Limfjord

(pdv not yet confirmed)

a few

 

 

 

German BalTic coast Mecklenburg-Western Pomerania

30 August 2002

6 (23.09.02)

 

 

 

Belgium/France

31 July 02 (France) /

18 August 02 (Belgium)

19 (24.09.02)

 

 

 

United Kingdom
(common and grey seals)

13 August 2002

1,587 (18.09.02)