{"refrec":{"BRefID":102831,"RR":"<b>Juhel, G.; Davenport, J.; O’Halloran, J.; Culloty, S.C.; O’Riordan, R.M.; James, K.F.; Furey, A.; Allis, O.</b> (2006). Impacts of microcystins on the feeding behaviour and energy balance of zebra mussels, <i>Dreissena polymorpha</i>: a bioenergetics approach. <i>Aquat. Toxicol. 79(4)</i>: 391-400. <a href=\"https://dx.doi.org/10.1016/j.aquatox.2006.07.007\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquatox.2006.07.007</a>","BEntID":99619,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Aquat. Toxicol. 79(4)</i>: 391-400. <a href=\"https://dx.doi.org/10.1016/j.aquatox.2006.07.007\" target=\"_blank\">https://dx.doi.org/10.1016/j.aquatox.2006.07.007</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Juhel, G.; Davenport, J.; O’Halloran, J.; Culloty, S.C.; O’Riordan, R.M.; James, K.F.; Furey, A.; Allis, O.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Juhel, G. <i>et al.</i>","Englishabstract":"Microcystins are produced by bloom-forming cyanobacteria and pose significant health and ecological problems. To investigate the impacts of these biotoxins on the physiology of the zebra mussels, <i>Dreissena polymorpha</i>, a series of short-term feeding experiments were conducted in the laboratory. We used five microalgal diets consisting of single-cell suspensions of the green algae, <i>Chlorella vulgaris</i>, the diatom, <i>Asterionella formosa</i>, the cryptophyte, <i>Cryptomonas</i> sp. and two strains of the toxic cyanobacterium, <i>Microcystis aeruginosa</i> (strains CCAP 1450/06 and CCAP 1450/10). A sixth diet was a mixture of the diatom and the CCAP 1450/10 cyanobacterial strain. The low-toxicity strain CCAP 1450/06 contained 7.4 μg l<sup>−1</sup> of the MC-LR variant while the very toxic strain CCAP 1450/10 contained 23.8 μg l<sup>−1</sup> of MC-LR and 82.9 μg l<sup>−1</sup> of MC-LF. A flow-through system was designed to measure the following feeding parameters: clearance, filtration, ingestion and absorption rates. Ultimately the scope for growth (SFG) was determined as a net energy balance. We observed that mussels cleared the cyanobacterial species containing MC-LF (mean ± 95% confidence interval) at a significant lower rate (498 ± 82 ml h<sup>−1</sup> g<sup>−1</sup> for the single cell suspension and 663 ± 100 ml h<sup>−1</sup> g<sup>−1</sup> for the mixture diet) than all of the non-toxic species and the cyanobacterium containing MC-LR (all above 1 l h<sup>−1</sup> g<sup>−1</sup>). The same pattern was observed with all the feeding parameters, particularly absorption rates. Furthermore, MC-LF caused an acute irritant response manifested by the production of ‘pseudodiarrhoea’, unusually fluid pseudofaeces, rich in mucus and MC-LF-producing Microcystis cells, ejected through the pedal gape of the mussels. This overall response therefore demonstrates selective rejection of MC-LF-producing cyanobacteria by zebra mussels, enhancing the presence of the very toxic MC-LF-producing <i>M. aeruginosa</i> in mixed cyanobacterial blooms and in the benthos.<p>Finally, we observed that the SFG (mean ± 95% confidence interval) of mussels feeding on <i>M. aeruginosa</i> containing MC-LF was significantly lower (34.0 ± 18.8 J h<sup>−1</sup> g<sup>−1</sup> for the single cell suspension and 83.1 ± 53.0 J h<sup>−1</sup> g<sup>−1</sup> for the mixture diet) than for mussels ingesting non-toxic diets, except for <i>C. vulgaris</i> (all above 200 J h<sup>−1</sup> g<sup>−1</sup>). This reveals a sublethal, stressful effect of microcystins (particularly MC-LF) on the feeding behaviour and energy balance of the zebra mussel.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Impacts of microcystins on the feeding behaviour and energy balance of zebra mussels, <i>Dreissena polymorpha</i>: a bioenergetics approach","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:31:22.735138","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"microcystins; cyanobacteria; Microcystis aeruginosa; mussel feedingbehaviour; scope for growth; toxicity","OtherDescriptors":null,"Notes":null,"AnaPub":2006,"MonPub":null,"DateUpdate":"2020-10-21","DateCreate":"2006-10-12","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000241090300009","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.aquatox.2006.07.007"},"refs":null,"anarec":{"AnaID":102831,"PubliDate":2006,"Pagination":"391-400","XtraPublOfAnaID":null,"ISBN":null,"Volume":"79","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42203,"SerRR":"Aquatic Toxicology. 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