{"refrec":{"BRefID":249978,"RR":"<b>Bagøien, E.; Miranda, A.; Reguera, B.; Francois, J.M.</b> (1996). Effects of two paralytic shellfish toxin producing dinoflagellates on the pelagic harpacticoid copepod <i>Euterpina acutifrons</i>. <i>Mar. Biol. (Berl.) 126(3)</i>: 361-369. <a href=\"http://dx.doi.org/10.1007/BF00354618\" target=\"_blank\">http://dx.doi.org/10.1007/BF00354618</a>","BEntID":241678,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Biol. (Berl.) 126(3)</i>: 361-369. <a href=\"http://dx.doi.org/10.1007/BF00354618\" target=\"_blank\">http://dx.doi.org/10.1007/BF00354618</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bagøien, E.; Miranda, A.; Reguera, B.; Francois, J.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bagøien, E. <i>et al.</i>","Englishabstract":"The effects of two paralytic shellfish toxin (PST) producing dinoflagellates, <em class=\"EmphasisTypeItalic \">Alexandrium minutum</em> Halim (high and low toxin strains) and <em class=\"EmphasisTypeItalic \">Gymnodinium catenatum</em> Graham, on the pelagic harpacticoid copepod <em class=\"EmphasisTypeItalic \">Euterpina acutifrons</em> Dana were tested in a series of experiments run from October 1994 to May 1995. In small volumes (350 ml), both strains of <em class=\"EmphasisTypeItalic \">A. minutum</em> (300 to 350 cells ml<sup>-1</sup>), and <em class=\"EmphasisTypeItalic \">G. catenatum</em> (175 cells ml<sup>-1</sup>), strongly reduced naupliar activity (about 30 and 17% were inactive after 24 h, respectively). Activity is here defined as movement. In medium volumes (6 litre), 40% of nauplii incubated with the high toxin strain of <em class=\"EmphasisTypeItalic \">A. minutum</em> (1000 cells ml<sup>-1</sup>) and 8% of nauplii incubated with cell-free filtrate of the same culture were inactive after 24 h; these values increased to 50 and 30% respectively after 3 d. In large volumes (20 litre), adult copepods incubated with <em class=\"EmphasisTypeItalic \">A. minutum</em> (1000 and 10000 cells ml<sup>-1</sup>) for 5 d revealed only trace levels of PSP-toxins (paralytic shellfish poisoning) in the extracts analysed by HPLC. With both strains of <em class=\"EmphasisTypeItalic \">A. minutum</em> (1000 and 10000 cells ml<sup>-1</sup>), 10 to 15% of the copepods were inactive after 1 to 2 d. It is suggested that <em class=\"EmphasisTypeItalic \">E. acutifrons</em> avoids feeding on the dinoflagellates after tasting a few cells, but that the dinoflagellates may exude toxins or other substances that affect the copepods. The inactivating effect of the toxic dinoflagellates on the nauplii was more rapid and stronger than on adult copepods, although strong inactivation and death were also observed in adults with time (up to 80% were inactive after 5 d of incubation with <em class=\"EmphasisTypeItalic \">A. minutum</em>). Still, in our experiments a considerable proportion of adult females incubated with the toxic dinoflagellates remained active and were able to produce viable eggs for several days.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effects of two paralytic shellfish toxin producing dinoflagellates on the pelagic harpacticoid copepod <i>Euterpina acutifrons</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-17 01:32:00.350151","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1996,"MonPub":null,"DateUpdate":"2015-09-21","DateCreate":"2015-09-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1996VK87000002","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/BF00354618"},"refs":null,"anarec":{"AnaID":249978,"PubliDate":1996,"Pagination":"361-369","XtraPublOfAnaID":null,"ISBN":null,"Volume":"126","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43352,"SerRR":"Marine Biology: International Journal on Life in Oceans and Coastal Waters. 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