{"refrec":{"BRefID":380822,"RR":"<b>Sajikumar, K.K.; Sasikumar, G.; Viswambharan, D.; Rahuman, S.; Jeena, N.S.; Vineesh, N.; Binesh, C.P.; Koya, K.P.S.; Mahesh, V.; Rohit, P.; Asokan, P.K.; Mohan, S.; Mohamed, K.S.</b> (2024). Resolving taxonomic ambiguity and distribution of <i>Tremoctopus gracilis</i> (Cephalopoda: Tremoctopodidae) based on molecular evidence. <i>Mar. Biol. (Berl.) 171(2)</i>: 47. <a href=\"https://dx.doi.org/10.1007/s00227-023-04376-0\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-023-04376-0</a>","BEntID":378563,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Mar. Biol. (Berl.) 171(2)</i>: 47. <a href=\"https://dx.doi.org/10.1007/s00227-023-04376-0\" target=\"_blank\">https://dx.doi.org/10.1007/s00227-023-04376-0</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Sajikumar, K.K.; Sasikumar, G.; Viswambharan, D.; Rahuman, S.; Jeena, N.S.; Vineesh, N.; Binesh, C.P.; Koya, K.P.S.; Mahesh, V.; Rohit, P.; Asokan, P.K.; Mohan, S.; Mohamed, K.S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Sajikumar, K.K. <i>et al.</i>","Englishabstract":"The octopus of the genus <i>Tremoctopus</i> from the Arabian Sea has not been investigated in the past. This study reports on the rare pelagic octopus <i>Tremoctopus gracilis</i> from the south-eastern Arabian Sea. Twenty females with dorsal mantle lengths (DML) ranging between 62 and 160&nbsp;mm and weighing between 31 and 719&nbsp;g were examined. These specimens were collected from commercial fishing grounds, and amongst them was a single mature female with 12,618 oocytes in the ovary (size varied from 0.61 to 1.67&nbsp;mm (mean = 1.13&nbsp;mm). The detailed morphometric and morphological characteristics were recorded, and the specimens were identified up to the genus level. Further molecular species identification was carried out through mitochondrial markers (COI &amp; 16S rRNA). Phylogenetic analysis, based on partial sequences of the above markers, generated a single clade that included sequences from the Indian and Pacific Oceans, including those misidentified as <i>Tremoctopus violaceus</i> from the Pacific. Evolutionary divergence estimation revealed a high inter-specific genetic divergence from <i>T. violaceus</i> sequences in the Mediterranean Sea and Atlantic Ocean, thus confirming the <i>Tremoctopus</i> species in our study as <i>T. gracilis</i> and authenticated that GenBank sequences of <i>T. violaceus</i> from the Pacific Ocean are indeed <i>T. gracilis</i>.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Resolving taxonomic ambiguity and distribution of <i>Tremoctopus gracilis</i> (Cephalopoda: Tremoctopodidae) based on molecular evidence","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-03 01:32:13.571417","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2024,"MonPub":null,"DateUpdate":"2025-04-22","DateCreate":"2024-01-15","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001137217600001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s00227-023-04376-0"},"refs":null,"anarec":{"AnaID":380822,"PubliDate":2024,"Pagination":"47","XtraPublOfAnaID":null,"ISBN":null,"Volume":"171","Issue":"2","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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