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 Common Seals  

Information on Dead Seals 

Status Reports No. 21 - 28 (August 2002)

Common Wadden Sea Secretariat, Wilhelmshaven

 
Recent Status Reports
 
Reports August 2002
Status Report No. 28 (27.08.02)
Status Report No. 27 (23.08.02)
Status Report No. 26 (21.08.02)
Status Report No. 25 (15.08.02)
Status Report No. 24 (14.08.02)
Status Report No. 23 (13.08.02)
Status Report No. 22 (09.08.02)
Status Report No. 21 (07.08.02)
Previous Reports:
No. 1 - 12 (May-June 2002)
No. 13 - 20 (July 2002)

Trilateral Seal Expert Meeting (Hamburg, 6 June 2002)

Status Report No. 28 (27.08.2002):

Wadden Sea and North Sea

Dutch North Sea and Wadden Sea

Until 26 August, there had been about 680 dead registered seals in the Netherlands. Additionally, 33 ill animals have been transported to seal rehabilitation centers. The number of 713 dead and sick animals contains two dead grey seals, and at least seventeen animals, which washed ashore outside the Dutch Wadden Sea area, i.e. on the North Sea coast of the provinces of Noord-Holland, Zuid-Holland and Zeeland. Two of the investigated seals from the coast of Noord-Holland outside the Wadden Sea were tested pdv positive. A dead seal found in the Delta area of the province of Zeeland is being investigated with priority.

Lower Saxon Wadden Sea

In the last days, high numbers of dead seals washed ashore along the entire Lower Saxon coast. On 26 August, there were about 483 dead common seals registered in Lower Saxony in total. Additionally, five grey seals have been registered, however the carcasses were too decomposed for sampling.

Hamburg part of the Wadden Sea

There have been no more additional dead seals registered in the Hamburg part of the Wadden Sea besides the three dead seals on the Scharhörn plate and the two in the harbour of the City of Hamburg, which were found on 22 August. The results of the virological investigations are anticipated next week.

Schleswig-Holstein Wadden Sea

Dead seals are continuously being checked for pdv. So far, no positive pdv result has been registered.  

According to a survey in the Wadden Sea part of South Dithmarschen on 26 August, no dead seals were registered, the behavior of the seals hauling out on sandbanks was normal and drifting carcasses in the water were not observed.

Also in the Wadden Sea part of Nordfriesland, there is no sign of pdv suspected dead, moribund or ill seals. However, on the outer-sandbanks in total nine already decomposed seal carcasses were registered today. According to the condition of the carcasses, the dead animals have been drifted for a longer time in the water. In case the wind will change from Northeast to West, more carcasses will be expected on the sandbanks.

Danish North Sea coast and Wadden Sea

Until now, no unusual numbers of dead seals have been reported from the Danish Wadden Sea and North Sea coast and from the Limfjord area.

Island of Helgoland

On 27 August, the total number of dead common seals registered on Helgoland was 85. Some of the carcasses on the partly rocky coast cannot be recovered because of logistical reasons. At the moment, only 10% of the normal stock of 400 animals is resting at the Helgoländer Düne.

There has been reports on drifting seal carcasses in the surrounding waters of Helgoland and also from other sea areas off the Wadden Sea islands in Schleswig-Holstein and Lower Saxony.

Belgian/French North Sea

No changes to the situation since the Seal Report no. 26.

 

Southeast coast of England

There has been no updated information available since the Seal Report no. 26.
See also: http://www.smru.st-and.ac.uk

 

Skagerrak/Kattegat

Denmark

According to information of the National Forest and Nature Agency, the number of found dead seals in the Kattegat area is decreasing. A summary of numbers for the different districts is anticipated within the next days.

Sweden

Updated numbers regarding found dead seals cannot be given for the Swedish Skagerrak-Kattegat area since it was stated on 08.08.02 that more than 1500 dead seals had been registered in the entire Swedish area. The Swedish institutes are primarily busy with sampling the seals and a summary of numbers for the different districts is anticipated within the next days.

Norway

There has been no updated information on numbers available since the Seal Report no. 27.

Kjell Handeland from the National Veterinary Institute in Oslo reported that the pdv has now been identified in three seals submitted for post mortem at the National Veterinary Institute in Oslo by PCR. All of the pdv-positive seals originated from the Oslofjord-area. Seven other seals examined have been negative so far, however, further examination will be conducted on this material.

 

Compiled by

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

Further Links

 

 

 

Status Report No. 27 (23.08.2002):

Wadden Sea and North Sea  

Dutch North Sea and Wadden Sea
Until 22 August, there have been about 513 dead registered seals in the Netherlands. Additionally, 27 ill animals have been transported to seal rehabilitation centers. The number of 540 dead and sick animals contains two grey seals, and at least sixteen animals, which washed ashore outside the Dutch Wadden Sea area, i.e. on the North Sea coast of the provinces of Noord-Holland, Zuid-Holland and Zeeland. Several of these seals from outside the Wadden Sea were also tested pdv positive.

Lower Saxon Wadden Sea
On 22 August, the total number of dead seals washed ashore along the entire Lower Saxon coast was 331.

Hamburg part of the Wadden Sea
On 22 August three dead seals were found on the Scharhörn plate. It cannot be excluded that the seals died because of pdv.
On 21 and 22 August, two dead seals were found in the harbour of the City of Hamburg. They died about two weeks ago and virological investigations to test pdv are being initiated.

Schleswig-Holstein Wadden Sea
Dead seals are continuously being checked for pdv. So far, no positive pdv result has been registered.

Danish North Sea coast and Wadden Sea
No unusual dead seals have been reported from the Danish Wadden Sea and North Sea coast and from the Limfjord area.

Island of Helgoland
On 22 August, the total number of dead common seals registered on Helgoland was 55. On 16 August, the first five dead seals found were tested pdv positive.

Belgian/French North Sea
No changes to the
situation since the last Seal Report no. 26.

Southeast coast of England
There has been no updated information available since the last Seal Report no. 26.

See also: http://www.smru.st-and.ac.uk

Skagerrak/Kattegat

The total number of registered dead seals in the Skagerrak-Kattegat area is more than 3970. A specification of the data is given below:

Sweden
Updated numbers regarding found dead seals cannot be given for the Swedish Skagerrak-Kattegat area since it was stated on 08.08.02 that more than 1500 dead seals have been registered in the entire Swedish area. The Swedish institutes are primarily busy with sampling the seals and a summary of numbers for the different districts is anticipated within the next weeks.

Norway
The Norwegian Pollution Control Authority reported that by 21.08.2002  444 dead common seals had been registered in Norwegian waters in the area from Hvaler (near Fredrikstad/Swedish border) to Kristiansand in the south. The total number of dead seals is estimated to about 600. The greatest numbers of dead seals are reported in the area of the outer Oslofjord (290 dead animals). The number of reported carcasses has increased the last two weeks/weekends, and the impression of the county of Aust-Agder (around Arendal on the south coast) is that the number of dead animals is increasing in that area.

Denmark
The status of registered dead seals in the Danish Skagerrak-Kattegat area, according to information of the National Forest and Nature Agency, is as follows:

Figure: Danish State Forest Districts

 

 

Danish State Forest District

Dead seals since 03.05.02 until

21.08.2002

North Kattegat area (incl. Fussingø)

 

Nordjylland (incl. Læsø)

333

Buderupholm (east coast of Jutland north of the Mariager Fjord)

27

Fussingø (Djursland incl. Anholt)

290

 

South Kattegat area

 

Silkeborg (east coast of Jutland south of Aarhus, incl. Samsø, Bosserne)

330

Randbøl (incl. Møllegrunden and Endelave)

118

Fyn

122

Kronborg (north east coast of Sealand)

24

Tisvilde (north coast of Sealand incl. Hesselø)

392

Odsherred (north west coast of Sealand)

206

 

Øresund area

 

Jægersborg

6

København

19

TOTAL

1867

Compiled by

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

 

Status Report No. 26 (21.08.2002):

Wadden Sea and North Sea

Dutch North Sea and Wadden Sea

Until today, about 482 dead seals have been registered in the Netherlands. Additionally, 27 ill animals have been transported to seal rehabilitation centers. The number of 509 dead and sick animals contains at least two grey seals, and fifteen animals, which washed ashore outside the Dutch Wadden Sea area, i.e. on the North Sea coast of the provinces of Noord-Holland, Zuid-Holland and Zeeland. Several of these seals from outside the Wadden Sea were also tested pdv positive.

Lower Saxon Wadden Sea

On 20 August, the total number of dead seals washed ashore along the entire Lower Saxon coast was 309.

Schleswig-Holstein Wadden Sea

Dead seals are continuously being checked for pdv. So far, no positive pdv result has been registered.

Danish North Sea coast and Wadden Sea

No unusual dead seals have been reported from the Danish Wadden Sea, North Sea coast and Limfjord area.

Island of Helgoland

On 16 August, five common seals on Helgoland were tested pdv positive by the ‘Landeslabor’ in Neumünster. The results have to be furthermore confirmed by antigene investigations at the Veterinary School of Hannover (Tierärztliche Hochschule). The results are expected within a week. Since 11 August, 47 dead seals have been registered on Helgoland.

Belgian/French North Sea

So far only one seal pup of 31 July/1 August was tested pdv positive, the seal stranded in the north of France. No extra mortality or strandings of unusual numbers of dead seals has been registered in Belgium.

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

Southeast coast of England

Since 12 August 2002 until today, there have been 145 reports of dead seals around the UK (excluding Northern Ireland). Approximately 25-30 of these have been sent for post-mortem and six cases have been confirmed as positive for PDV. The confirmed cases were from the Wash on the southeast coast of England (see map on page 2). The number of reported dead seals is higher than would normally be reported at this time of year but how much of this increase is real and how much relates to increased observer effort is unknown.

See  also: http://www.smru.st-and.ac.uk

Kattegat / Skagerrak

Denmark

There has been no updated information available since the last Seal Report No 25. Updated numbers of dead seals in the Danish Kattegat area are expected at the end of this week.

Sweden

There has been no updated information available since the last Seal Report No 25. There have been more than 1500 dead seals in the entire Swedish area, and a summary of numbers for the different districts is anticipated within the next two weeks.

Norway

On 20 August, the updated number of dead common seals is 300 in total.  This number is unconfirmed and may contain duplicate reportings. The number covers the areas from the Swedish border to the county of Telemark on the west side of the outer Oslofjord.

 

Compiled by

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

Status Report No. 25 (15.08.2002):

Wadden Sea and North Sea

Dutch North Sea and Wadden Sea

Until today, there are about 395 dead registered in the Netherlands. Additionally, there are 23 ill animals, which have been transported to seal rehabilitation centers. The number of 418 dead and sick animals contains at least fifteen animals, which washed ashore outside the Dutch Wadden Sea area, i.e. on the North Sea coast of the provinces of Noord-Holland, Zuid-Holland and Zeeland. Several of these seals from outside the Wadden Sea were also tested pdv positive.

Lower Saxon Wadden Sea

On 14 August, the total number of dead seals washed ashore along the entire Lower Saxon coast was 197. Until now, virological investigations have confirmed the pdv virus in 14 seals.

Schleswig-Holstein Wadden Sea

Dead seals are continuously being checked for pdv. So far, no positive pdv result has been registered.

Danish North Sea coast and Wadden Sea

No unusual dead seals have been reported from the Danish Wadden Sea, North Sea coast and Limfjord area.

Island of Helgoland

At the moment, about 400 common seals are resting around Helgoland-Düne, Germany. Because of a higher mortality than usual over the last days, samples of dead seals have been taken for virological investigations.

Belgian/French North Sea

No changes to the situation as on 7 August 2002.

Southeast coast of England

On 13 August the phocine distemper virus was confirmed in the Wash on the southeast coast of England. Five dead common seals from that area were tested pdv positive.

Skagerrak/Kattegat

The total number of registered dead seals in the Skagerrak-Kattegat area is more than 3300. A specification of the data is given below:

Sweden

At present the mortality and spreading of the epidemic in the Swedish Skagerrak-Kattegat area is continuing as to the earlier prediction. It seems that the disease has reached the seals in Bohuslän, the area between Gothenburg and the Swedish-Norwegian border. There are more than 1500 dead seals in the entire Swedish area, and a summary of numbers for the different districts is anticipated within the next two weeks.

Norway

At present there is no topical number of registered dead animals in the outer parts of the Oslofjord in Norway near the border to Sweden. The number of dead seals as at 8 August was roughly estimated at 40.

Denmark

In total, the registered numbers of dead seals are decreasing now in the Danish Kattegat-Skagerrak area. Fresh dead seals are still only found in the Øresund area. The status of registered dead seals in the Danish Skagerrak-Kattegat area, according to information from the National Forest and Nature Agency, is as follows:

Danish State Forest District Dead seals until 14.08.2002
North Kattegat area (incl. Fussingø):  
Nordjylland (incl. Læsø) 297
Buderupholm (east coast of Jutland north of the Mariager Fjord) 27
Fussingø (Djursland incl. Anholt) 290
South Kattegat area:  
Silkeborg (east coast of Jutland south of Aarhus, incl. Samsø, Bosserne) 321
Randbøl (incl. Møllegrunden and Endelave) 118
Fyn 86
Kronborg (north east coast of Sealand) 13
Tisvilde (north coast of Sealand incl. Hesselø) 388
Odsherred (north west coast of Sealand) 206
Øresund area:  
Jægersborg 2
København

9

TOTAL

1757

 

Compiled by

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

Status Report No. 24 (14.08.2002):

The following information has arrived from the United Kingdom 
on 14th August 2002.

Phocine Distemper Virus in the UK        

On 13th August 5 cases of PDV were confirmed among harbour seals in the UK.  The animals were from the Wash on the southeast coast of England and cause of death was confirmed by Dr Seamus Kennedy of the Veterinary Sciences Division at the Department of Agriculture and Rural Development in Northern Ireland by immunoperoxidase test.

The response to the epidemic in the UK is being coordinated by the Institute of Zoology in London.  The Sea Mammal Research Unit will be sending out weekly status reports on the progress of the outbreak in British waters. Details and information will also be posted on our website.

Compiled by Ailsa Hall
Sea Mammal Research Unit (SMRU)
Gatty Marine Lab, St Andrews University
St Andrews, Scotland
http://www.smru.st-and.ac.uk

Next Status Report

The next Status Report is anticipated for Thursday 15 August 2002. In case of further spreading of the virus or other relevant information a report will be compiled immediately.

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

Status Report No. 23 (13.08.2002):

Status

Since the last Seal Report No. 22 of August 9, 2002, there have been no remarkable changes in numbers of dead seals, respectively topical summarized data are expected within the next days at the earliest.

Next Status Report

The next Status Report is anticipated for Thursday 15 August 2002. In case of further spreading of the virus or other relevant information a report will be compiled immediately.

Compiled by

Bettina Reineking
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
reineking@waddensea-secretariat.org

 

Status Report No. 22 (09.08.2002):

Status:  

Wadden Sea and North Sea

Dutch North Sea and Wadden Sea

There are now 249 registered dead and 23 ill seals in The Netherlands (status as at 9 August 12.00 hours).  All 23 ill animals have been transported to seal rehabilitation centres. The number of 272 dead and sick animals contains fifteen animals which have washed ashore outside the Dutch Wadden Sea area, i.e. on the North Sea coast of the provinces of Noord-Holland and Zuid-Holland.

Lower Saxonian Wadden Sea

On 8 August the total number of dead seals washed ashore along the Lower Saxonian coast was 107.
According to a press release of 9 August 2002 of the Lower Saxonian Office for Consumer Protection (LAVES) virological investigations have confirmed the presence of the pdv virus in seals washed ashore in the eastern part of the Lower Saxonian Wadden Sea (Bezirk Lüneburg).

Schleswig-Holstein Wadden Sea

Dead seals are continuously being checked for the pdv disease. So far, no positive pdv result has been registered.

Danish North Sea coast

No unusual dead seals have been reported from the Danish Wadden Sea, North Sea coast and Limfjord area.

Belgian/French North Sea

Situation as on 7 August.

Skagerrak/Kattegat

The total number of registered dead seals in the Skagerrak-Kattegat area as at 7 August 2002 is approximately 3150. A specification and motivation of the data is given below:

Denmark

The status of registered dead seals in the Danish Skagerrak-Kattegat area as at 7 August is as follows:

State forest district 07/08/2002
Fussingø 290
Nordjylland 297
Tisvilde 388
Odsherred 206
Silkeborg 186
Randbøl 118
Fyn 85
Buderupholm 26
Kronborg 13
Total 1609

 

Map of the Kattegat/Skagerrak Area

Sweden

At present there is no precise number of registered dead animals for the Swedish Skagerrak-Kattegat area, but, according to Martin Larsvik of the Tjärnö Marine Biological Laboratory, the estimated number from one week ago is about 1500.

Yesterday a press release was issued by the Tjärnö Marine Biological Laboratory which is presented in full below (a map of the Swedish west coast can be found in Status Report Nr. 15).

Press release (8 August 2002): Mink could have infected the harbour seals
In the northern part of Skåne and south part of Halland the number of dead animals per day has decreased. Still most harbour seals die in the colonies of Varberg and Onsala, but the number of sick and dead animals in the colonies of Marstrand, Lysekil, Väderöarna and Koster is increasing. 
The offshore wind during the last days brings the carcasses away from coast, but this will change when the wind shifts. During the coming weeks a lot of harbour seals will die in Bohuslän. Thus the epizootic is spreading according to earlier forecast. We lack updated figures of the number of reported dead seals.
Five dead harbour seals from Måkläppen were reported and sampled during the last weeks. The opinion of Anders Bergman, veterinarian at the Swedish Museum of Natural History, of the case is that they have died from PDV. During the years 1991-2001, i.e. between the epizootics 1988 and 2002, samples of 12 harbour seals and grey seals in the Baltic and along the Swedish west coast were taken. At the time of sampling these were suspected to have died from PDV. Yesterday the analysis of these samples was finished, showing that all of them were negative. The result of this limited study weakens the hypotheses that PDV has existed in the populations of grey seal and harbours seal around Swedish coasts. The virus is thus unlikely to have circulated among harbour seal and grey seals, forming a source of infection to the harbour seals on Anholt this year.
In all probability, the seal epizootic in 1988 started since PDV-carrying
harp seals had swum southwards, infecting harbour seals in Kattegatt. This year there are no reports of harp seals as far south as the North Sea area. The hypothesis that harp seals have spred the virus to harbour seals this time is therefore very weak.
The main hypothesis is now that mink or other animals have spread the virus to harbour seals. If sick or dead minks are drifting in the water, the playful harbour seals can swim up to them and get infected. Minks are now being collected from the areas of Måkläppen, Varberg, Göteborg and Koster. Samples from these will be examined later during summer.

General information (in Swedish) of harbour seals and about epizootics can be found on the web page
http://www.tmbl.gu.se/news/Saldod2002/Saldod2002_1.html

Norway

Yesterday a survey team of the Norwegian Institute of Marine Research has investigated the situation in the outer parts of the Oslofjord in Norway near the border to Sweden. According to Arne Bjørge 13-15% of the 310 observed hauling out animals showed signs of illness, most of which were males. Because of registration problems only a rough estimate of the number of dead animals can be given. The number as at 8 August was estimated at 40.

Next Status Report

The next Status Report is anticipated for Tuesday 13 August 2002.

Compiled by

Folkert de Jong
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
dejong@waddensea-secretariat.org

Further Links

Dutch Ministy for Agriculture, Nature Management and Fisheries:  Background Information and Press Releases (in Dutch and English)
Danish Forest and Nature Agency
/
Nationalparkamt Schleswig-Holstein

Status Report No. 21 (07.08.2002):

Status:  

Wadden Sea and North Sea

Dutch North Sea and Wadden Sea

The total number of washed ashore dead and ill seals in the Netherlands was 230 on 6 August. Of this number 198 animals washed ashore dead, 11 have been euthanized and 21 transported to seal rehabilitation centres. Seven of the 230 animals have washed ashore outside the Dutch Wadden Sea, i.e. on the Dutch North Sea coast.

Lower Saxonian Wadden Sea

According to a press release of 2 August 2002 of the Lower Saxonian Office for Consumer Protection (LAVES) virological investigations have confirmed the presence of the pdv virus in seals washed ashore on the East Frisian Wadden Sea coast 2 weeks ago (see Status Report Nr. 20).

On 6 August the total number of dead seals washed ashore along the Lower Saxonian coast since 17 July 2002 was 95. Interestingly all bodies were found on the east Frisian island and mainland shores and none in the eastern part of the Lower Saxonian Wadden Sea.

Schleswig-Holstein Wadden Sea

Dead seals are continuously being checked for the pdv disease. So far, no positive pdv result has been registered.

Danish North Sea coast

No unusual dead seals have been reported from the Danish Wadden Sea, North Sea coast and Limfjord area.

Belgian/French North Sea

Yesterday the University of Luik (Belgium) confirmed the presence of the pdv virus in a seal which had washed ashore on 31 July 2002 in Boulogne, near the French-Belgian border.

Skagerrak/Kattegat

In total about 2200 dead seals have been registered in the Danish and Swedish Skagerrak and Kattegat (status as at 31 July 2002, see Status Reports 19 and 20).

Updated numbers will probably be available coming Friday.

According to Arne Bjørge of the Norwegian Institute of Marine Research in Bergen, about 25 dead and /or sick seals have been reported in the outer parts of the Oslofjord in Norway near the border to Sweden. A survey team will investigate the situation today. Data from this survey will be available coming Thursday or Friday.

Next Status Report

The next Status Report is anticipated for Friday 9 August 2002.

Compiled by

Folkert de Jong
Common Wadden Sea Secretariat
Virchowstr. 1
D 26382 Wilhelmshaven
dejong@waddensea-secretariat.org

Further Links

Dutch Ministy for Agriculture, Nature Management and Fisheries:  Background Information and Press Releases (in Dutch and English)
Danish Forest and Nature Agency
/
Nationalparkamt Schleswig-Holstein /  

 

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