{"refrec":{"BRefID":282393,"RR":"<b>Perissinotto, R.; Miranda, N.A.F.; Raw, J.L.; Peer, N.</b> (2014). Biodiversity census of Lake St Lucia, iSimangaliso Wetland Park (South Africa): Gastropod molluscs. <i>ZooKeys 440(440)</i>: 1-43. <a href=\"http://dx.doi.org/10.3897/zookeys.440.7803\" target=\"_blank\">http://dx.doi.org/10.3897/zookeys.440.7803</a>","BEntID":274412,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>ZooKeys 440(440)</i>: 1-43. <a href=\"http://dx.doi.org/10.3897/zookeys.440.7803\" target=\"_blank\">http://dx.doi.org/10.3897/zookeys.440.7803</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Perissinotto, R.; Miranda, N.A.F.; Raw, J.L.; Peer, N.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Perissinotto, R. <i>et al.</i>","Englishabstract":"The recent dry phase experienced by the St Lucia estuarine system has led to unprecedented desiccation and hypersaline conditions through most of its surface area. This has changed only recently, at the end of 2011, with the onset of a new wet phase that has already caused a major shift to oligo- and mesohaline conditions. The estuary mouth, however, remains closed to the ocean, making the weak connection recently established between the St Lucia and the Mfolozi estuaries the only conveyance for marine recruitment. As a result, only 10 indigenous and two alien aquatic gastropod species are currently found living in the St Lucia estuarine lake. This is out of a total of 37 species recorded within the system since the earliest survey undertaken in 1924, half of which have not been reported in the literature before. The tick shell, <i>Nassarius kraussianus</i>, which was consistently found in large abundance prior to the recent dry phase, appears to have temporarily disappeared from the system, probably as a result of the extinction of <i>Zostera</i> marine grasses inside the lake. Population explosions of the bubble shell <i>Haminoea natalensis</i>, with its distinct egg masses, were recorded seasonally until 2009, but the species has subsequently not been observed again. A molecular DNA analysis of the various populations previously reported as belonging to the same assimineid species, variably referred to as <i>Assiminea capensis</i>, <i>A. ovata</i>, or <i>A. bifasciata</i>, has revealed that the St Lucia assemblage actually comprises two very distinct taxa, <i>A.</i> cf. <i>capensis</i> and a species provisionally referred to here as “<i>A.</i>” aff. <i>capensis</i> or simply Assimineidae sp. In the mangroves, the climbing whelk <i>Cerithidea decollata</i> is still found in numbers, while ellobiids such as <i>Cassidula labrella</i>, <i>Melampus semiaratus</i> and <i>M. parvulus</i> are present in low abundances and all previously recorded littorinids have disappeared. A number of alien freshwater species have colonized areas of the system that have remained under low salinity. These include the invasive thiarid <i>Tarebia granifera</i>, which can be found in concentrations exceeding 5000 ind.m<sup>-2</sup>, the lymnaeid <i>Pseudosuccinea columella</i> and the physid <i>Aplexa marmorata</i>.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Biodiversity census of Lake St Lucia, iSimangaliso Wetland Park (South Africa): Gastropod molluscs","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Mollusca, Gastropoda, biodiversity census, hypersalinity, iSimangaliso Wetland Park, illustrated checklist","OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2018-02-13","DateCreate":"2017-01-09","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000341623500001","VABBcode":null,"OpenAcc":1,"DOI":"10.3897/zookeys.440.7803"},"refs":null,"anarec":{"AnaID":282393,"PubliDate":2014,"Pagination":"1-43","XtraPublOfAnaID":null,"ISBN":null,"Volume":"440","Issue":"440","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":188760,"SerRR":"ZooKeys. 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