{"refrec":{"BRefID":365587,"RR":"<b>Kamermans, P.; Blanco, A.; van Dalen, P.; Engelsma, M.; Bakker, N.; Jacobs, P.; Dubbeldam, M.; Sambade, I.M.; Vera, M.; Martinez, P.</b> (2023). <i>Bonamia</i>-free flat oyster (<i>Ostrea edulis</i> L.) seed for restoration projects: non-destructive screening of broodstock, hatchery production and test for <i>Bonamia</i>-tolerance. <i>Aquat. Living Resour. 36</i>: 11. <a href=\"https://dx.doi.org/10.1051/alr/2023005\" target=\"_blank\">https://dx.doi.org/10.1051/alr/2023005</a>","BEntID":363309,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Aquat. Living Resour. 36</i>: 11. <a href=\"https://dx.doi.org/10.1051/alr/2023005\" target=\"_blank\">https://dx.doi.org/10.1051/alr/2023005</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kamermans, P.; Blanco, A.; van Dalen, P.; Engelsma, M.; Bakker, N.; Jacobs, P.; Dubbeldam, M.; Sambade, I.M.; Vera, M.; Martinez, P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kamermans, P. <i>et al.</i>","Englishabstract":"Native (flat) oyster (<i>Ostrea edulis</i>) beds, once a major component of the North Sea, largely disappeared from the region in the late 19th century. Flat oyster restoration is taking place at a number of locations in the North Sea. When flat oyster beds are restored in areas where <i>O. edulis</i> is functionally extinct it is advised to treat these as disease-free areas. Adult oysters were collected in the Dutch Delta area which is infected with the pathogenic parasite <i>Bonamia ostreae</i>. The aim of this research was to obtain <i>Bonamia</i>-free seed from parents collected in a <i>Bonamia</i>-infected area. In addition, the oysters were analysed to identify candidate genomic regions related to bonamiosis tolerance and exposed to <i>Bonamia</i> in the field to assess survival compared to a naïve control group. With the aid of a non-destructive screening method, <i>Bonamia</i>-free broodstock were selected. These oysters produced <i>Bonamia</i>-free larvae and seed. For comparison, broodstock oysters were collected in the Dutch Wadden Sea, an area free of <i>Bonamia</i>. These oysters also produced <i>Bonamia</i>-free larvae and seed. To study if the Delta area oysters had developed a degree of resistance to the disease, while the naïve Wadden Sea oysters had not, seed of both groups was challenged in Lake Grevelingen where <i>Bonamia</i> occurs. Survival of the pre-selected <i>Bonamia</i>-free oysters was significantly higher than the naïve group. Samples of seed were analysed for association of candidate genetic markers related to bonamiosis tolerance. A higher percentage of individuals with tolerance-associated marker genotypes was found in the screened group compared to the naïve one. However, mortality of the naïve group could not be related to <i>Bonamia</i> presence. Further challenge tests are needed before firm conclusions regarding the genetic markers can be made. The results show that hatchery production of <i>Bonamia</i>-free and potentially <i>Bonamia</i>-tolerant flat oysters is possible.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"<i>Bonamia</i>-free flat oyster (<i>Ostrea edulis</i> L.) seed for restoration projects: non-destructive screening of broodstock, hatchery production and test for <i>Bonamia</i>-tolerance","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-11 01:31:02.938064","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Flat oyster; <i>Ostrea edulis</i>; <i>Bonamia</i>; restoration; disease tolerance","OtherDescriptors":null,"Notes":null,"AnaPub":2023,"MonPub":null,"DateUpdate":"2023-11-27","DateCreate":"2023-07-05","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":"WOS:000978018600001","VABBcode":null,"OpenAcc":1,"DOI":"10.1051/alr/2023005"},"refs":null,"anarec":{"AnaID":365587,"PubliDate":2023,"Pagination":"11","XtraPublOfAnaID":null,"ISBN":null,"Volume":"36","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":176303,"SerRR":"Aquatic living resources: ressources vivantes aquatiques: Paris.  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