{"refrec":{"BRefID":393367,"RR":"<b>Alves, P.R.; Glasby, C.J.; Paiva, P.C.; Santos, C.S.G.</b> (2024). Is <i>Namalycastis abiuma</i> (Grube, 1871) (Annelida: Nereididae) restricted to its type-locality? Evidence from morphological and molecular data. <i>Ocean and Coastal Research 72(suppl 1)</i>: e24028. <a href=\"https://dx.doi.org/10.1590/2675-2824072.23098\" target=\"_blank\">https://dx.doi.org/10.1590/2675-2824072.23098</a>","BEntID":391153,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Ocean and Coastal Research 72(suppl 1)</i>: e24028. <a href=\"https://dx.doi.org/10.1590/2675-2824072.23098\" target=\"_blank\">https://dx.doi.org/10.1590/2675-2824072.23098</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Alves, P.R.; Glasby, C.J.; Paiva, P.C.; Santos, C.S.G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Alves, P.R. <i>et al.</i>","Englishabstract":"<i>Namalycastis abiuma</i> has been recorded as a worldwide distributed species, found in most tropical and subtropical mangroves and estuarine environments. However, this status has been questioned in several publications, which indicate that several distinct species are being identified under the name <i>N. abiuma</i>. In this study, we perform a morphological analysis, along with a series of species delimitation tests and a phylogenetic analysis-using the molecular marker 16S-to evaluate whether analyzed populations previously identified as <i>Namalycastis abiuma</i> belong to the same species. We used sequences from the GenBank database in the analysis, as well as six newly sequenced specimens collected from the coast of Brazil, two of them from the <i>N. abiuma</i> type-locality. For species delimitation, we applied the Generalized Mixed Yule Coalescent (GMYC), the Assemble Species by Automatic Partitioning (ASAP), and the Multi-rate Poisson Tree Processes (mPTP) tests. Results from GMYC and ASAP suggest that <i>Namalycastis abiuma</i> may be endemic to the type-locality and that all other populations studied represent a second distinct species. However, mPTP indicates that all <i>Namalycastis</i> species included should be grouped into one single species. The mPTP results seem to be biased due to data limitation as it showed poor statistical support. Our morphological data, especially on the shape and dentition of the sub-neuroacicular falciger blades, support the GMYC and ASAP results, suggesting restricted endemism for <i>Namalycastis abiuma</i>. Based on these results, we conclude that <i>N. abiuma</i> is restricted to its type-locality and we provide a description of a new species, <i>Namalycastis lanai</i> sp. nov. occurring in Brazilian waters from 22°S to 27°S, including, at its southern range, an overlap with <i>N. abiuma</i> at Florianópolis. Finally, we provide a key to all <i>Namalycastis</i> species found in Brazil.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Is <i>Namalycastis abiuma</i> (Grube, 1871) (Annelida: Nereididae) restricted to its type-locality? 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