{"projectrec":{"ProID":832,"StandardTitle":"Ecotoxicology of European Cetaceans","OrigTitle":"Ecotoxicologie van Europese walvisachtigen","Acronym":null,"AbstractEnglish":"The aim of this study is: 1. to determine the causes of mortality of cetaceans - mainly dolfins and porpoises - found dead in European seas (both stranded and bycaught). 2. to determine the health status of the populations, by an anatomo- pathological study (veterinerians) and complementary toxicological study of stable pollutants: organochlorines and heavy metals (total and organic Hg). 3. to use these marine mammals as bioindicators, in order to determine the contamination level of the ecosystems, compare it geographically and follow it in function of time. 4. to study the mechanisms involved in the transfert and accumulation of the stable residues, as well as their speciation and detoxification: lipids, mineralization of methyl Hg, selenium, metallothioneins, etc …","AbstractOtherLang":"De negatieve bijdrage van de zware metalen en organochloren (PCBs en pesticiden) in de achteruitgang van de populaties van mariene zoogdieren (vooral dan de walvisachtigen) wordt algemeen erkend. Organochloren en zware metalen worden via een deregulering van het immuunsysteem en mogelijk ook door een rechtstreekse intoxicatie verantwoordelijk geachtvoor massale sterftes van dolfijnen in de Middellandse zee en de Noordzee. Algemeen wordt gevreesd dat de achteruitgang van de algemene gezondheidstoestand van de populaties -naast overbevissing en overbevaring van de zeeën- één van de grote bedreigingen vormt voor het voortbestaan van een aantal soorten. In dit verband moet bv. de studie van de speciatie van de diverse polluenten (organisch/anorganisch kwik) en van de mechanismen van metabolisatie een inzicht geven van de toxiciteitvan een aantal stoffen. Het doel van deze studie is vierledig:1. een eerste vraag geldt de doodsoorzaak van gestrande of aangespoeldedieren. Alle dieren worden in principe aan een grondig anatomo- pathologisch onderzoek onderworpen (Coignoul, Siebert). De ecotoxicologische resultaten worden hiermee vergeleken. Deze  interdiciplinaire benadering moet een betere bepaling van mogelijke doodsoorzaken mogelijk maken. 2. Anatomo-pathologie en ecotoxicologie zullen ons een duidelijk beeldgeven over de algemene gezondheidstoestand van de natuurlijke populaties van dolfijnen, bruinvissen e.a. 3. De walvisachtigen worden ook beschouwd als bioindicatoren voor contaminatie van de mariene ecosystemen. Als toppredatoren zullen vnl.de tandwalvissen de contaminatie van een heel voedselweb integreren en weerspiegelen. 4. Walvisachtigen beschikken over een aantal mechanismen die mogelijk een zekere bescherming bieden tegen intoxicaties door bv. zware metalen  (Selenium, metallothioneinen); anderzijds blijken tandwalvissen niet over de nodige enzymes te beschikken die een metabolisatie van bv. PCBs moeten mogelijk maken, dit in tegenstelling met vele landzoogdieren. Het bespreken van de transfert- en accumulatiemechanismen vormt hetvierde luik van deze studie.","DateLastModified":{"date":"2025-07-02 08:33:20.809226","timezone_type":1,"timezone":"+02:00"},"ParentProID":null,"BeginYear":1995,"EndYear":null,"BMonth":null,"EMonth":null,"BeginMonth":null,"EndMonth":null,"OrigTitleLangCode":"nl","OrigTitleLangID":41,"OrigTitleLangNL":"Nederlands","OrigTitleLang":"Dutch","OtherAbstractLangCode":"nl","OtherAbstractLangID":41,"OtherAbstractLang":"Dutch","OtherAbstractLangNL":"Nederlands","Progress":null,"ProgressNL":null,"PublicFlag":1,"CheckedFlag":0,"ND":"2003-11-26","UD":"2007-04-02","DMPFlag":0,"Budget":null,"BudgetCurrency":null},"parent":null,"persons":null,"projects":null,"events":null,"datasets":null,"institutes":[{"instituterec":{"Acronym":"ETOX","ProPartID":917,"PublicFlag":1,"OrigNameLangCode":"en","OrigNameLangID":15,"FullOrigName":"Vrije Universiteit Brussel; Faculty of Sciences; Department of Biology; Ecotoxicology and Polar Ecology Laboratory","Line1":"Pleinlaan 2","Line2":"1050 Brussel","Line3":null,"Line4":null,"InsID":1488,"FullStandardName":"Vrije Universiteit Brussel; Vakgroep Biologie; Laboratorium voor Ecotoxicologie en Polaire Ecologie","Role":"Co-ordinator","RoleID":7,"EncAddress":"Pleinlaan 2, 1050 Brussel, Belgium"},"parent":null,"institutes":null,"references":null,"conferences":null,"datasets":null,"persons":[{"Surname":"Joiris","Firstname":"Claude","Initials":"C.R.","LeaderFlag":0,"PersID":156,"Role":null,"RoleID":null,"PastInstitute":1,"BeginDay":null,"BeginMonth":null,"BeginYear":null,"EndDay":null,"EndMonth":1,"EndYear":2008}],"pastpers":null,"subpers":null,"projects":null,"urls":null,"pictures":null,"published":null,"affrefs":null,"collections":null,"thesterms":null,"taxterms":null,"geoterms":null,"thestermsFRIS":null,"nXtins":null,"previns":null,"spcols":null,"resmessage":"no id specified","complete":0,"participantrec":null,"peerrevs":null,"urlmaps":null},{"instituterec":{"Acronym":null,"ProPartID":5377,"PublicFlag":1,"OrigNameLangCode":null,"OrigNameLangID":null,"FullOrigName":null,"Line1":null,"Line2":null,"Line3":null,"Line4":null,"InsID":2270,"FullStandardName":"Institutionele werkingstoelagen (v.d. overheid); Universiteiten; Projectmatig onderzoek","Role":"Sponsor","RoleID":3,"EncAddress":""},"parent":null,"institutes":null,"references":null,"conferences":null,"datasets":null,"persons":[],"pastpers":null,"subpers":null,"projects":null,"urls":null,"pictures":null,"published":null,"affrefs":null,"collections":null,"thesterms":null,"taxterms":null,"geoterms":null,"thestermsFRIS":null,"nXtins":null,"previns":null,"spcols":null,"resmessage":"no id specified","complete":0,"participantrec":null,"peerrevs":null,"urlmaps":null}],"refs":null,"urls":null,"thesterms":[{"ThesaurusTerm":"ANE, Mediterranean Water","ThestID":182093,"ThesTypID":34,"ThesType":"ASFA Geoterms","OrigThesTerm":"ANE, Mediterranean Water","DutchTerm":null,"Code":null},{"ThesaurusTerm":"ANE, North Sea, Southern Bight","ThestID":182113,"ThesTypID":34,"ThesType":"ASFA Geoterms","OrigThesTerm":"ANE, North Sea, Southern Bight","DutchTerm":null,"Code":null},{"ThesaurusTerm":"Ecotoxicology","ThestID":9505,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","OrigThesTerm":"Ecotoxicology","DutchTerm":"Ecotoxicologie","Code":"c_35788"},{"ThesaurusTerm":"Marine biology","ThestID":4990,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","OrigThesTerm":"Marine biology","DutchTerm":"Mariene biologie","Code":"c_12399"},{"ThesaurusTerm":"Mortality causes","ThestID":5353,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","OrigThesTerm":"Mortality causes","DutchTerm":null,"Code":"c_5420914a"},{"ThesaurusTerm":"Offshore","ThestID":5723,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","OrigThesTerm":"Offshore","DutchTerm":"Offshore","Code":null},{"ThesaurusTerm":"Pollution","ThestID":6383,"ThesTypID":1,"ThesType":"ASFA Thesaurus List","OrigThesTerm":"Pollution","DutchTerm":"Vervuiling","Code":"c_6077"}],"taxterms":[{"TaxTerm":"Cetacea [whales, dolphins and porpoises]","AphiaID":2688,"OrigTaxTerm":"Cetacea","DutchTerm":"Walvissen"}],"geoterms":[{"GeoTerm":"Mediterranean Water","GeoObjectID":2371,"OrigGeoTerm":"Mediterranean Water","DutchTerm":null},{"GeoTerm":"Southern Bight","GeoObjectID":2399,"OrigGeoTerm":"Southern Bight","DutchTerm":"Zuidelijke Bocht"}],"funderids":[{"FunderID":"P101/2952210630; P101/1962211340","ThestID":181476,"FunderType":"Other contract id"}],"othtermsFRIS":null,"pictures":[],"spcols":[{"SpColID":38,"SpName":"Marine Biodiversity and Ecosystem Functioning"}],"resmessage":"","complete":1}