{"refrec":{"BRefID":295517,"RR":"<b>Fine, M.L.; Ali, H.A.; Nguyen, T.K.; Mok, H.-K.; Parmentier, E.</b> (2018). Development and sexual dimorphism of the sonic system in three deep-sea neobythitine fishes and comparisons between upper mid and lower continental slope. <i>Deep-Sea Res., Part 1, Oceanogr. Res. Pap. 131</i>: 41-53. <a href=\"https://dx.doi.org/10.1016/j.dsr.2017.11.009\" target=\"_blank\">https://dx.doi.org/10.1016/j.dsr.2017.11.009</a>","BEntID":287604,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Deep-Sea Res., Part 1, Oceanogr. Res. Pap. 131</i>: 41-53. <a href=\"https://dx.doi.org/10.1016/j.dsr.2017.11.009\" target=\"_blank\">https://dx.doi.org/10.1016/j.dsr.2017.11.009</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Fine, M.L.; Ali, H.A.; Nguyen, T.K.; Mok, H.-K.; Parmentier, E.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Fine, M.L. <i>et al.</i>","Englishabstract":"Based on morphology, NB Marshall identified cusk-eels (family Ophidiidae) as one of the chief sound-producing groups on the continental slope. Due to food scarcity, we hypothesized that sonic systems will be reduced at great depths despite their potential importance in sexual reproduction. We examined this hypothesis in the cusk-eel subfamily Neobythitinae by comparing sonic morphology in Atlantic species from the upper-mid (<i>Dicrolene intronigra</i>) and deeper continental slope (<i>Porogadus miles</i> and <i>Bathyonus pectoralis</i>) with three Taiwanese species previously described from the upper slope (<i>Hoplobrotula armatus, Neobythites longipes</i> and <i>N. unimaculatus</i>). In all six species, medial muscles are heavier in males than in females. <i>Dicrolene</i> has four pairs of sonic muscles similar to the shallow Pacific species, suggesting neobythitine sonic anatomy is conservative and sufficient food exists to maintain a well-developed system at depths exceeding 1 km. The sonic system in <i>Porogadus</i> and <i>Bathyonus</i> was reduced to a single pair of ventral medial muscles that connects to a smaller and thinner swimbladder via a long tendon. Small muscle fiber diameters, a likely indicator of rapid contraction, were present in males of five of the species. However, in <i>Bathyonus</i>, the deepest species (pale coloration, reduced eye size, shorter sonic muscles and longer tendons), muscle fibers were larger suggesting an adaptation to facilitate rapid bladder movement for sound production while using slower contractions and less metabolic energy. The six species separate into three groups in length-weight regressions: the three upper slope species have the greatest weights per unit length, <i>Dicrolene</i> is lower, and the two deep species are further reduced consistent with the hypothesis that food limitation affects sonic anatomy at great depths.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Development and sexual dimorphism of the sonic system in three deep-sea neobythitine fishes and comparisons between upper mid and lower continental slope","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-10 01:32:14.883327","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Swimbladder; Muscles; Tendons; Sexual dimorphism; Sound production;Acoustic communication; Eye development","OtherDescriptors":null,"Notes":null,"AnaPub":2018,"MonPub":null,"DateUpdate":"2018-05-23","DateCreate":"2018-05-15","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000425203300004","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.dsr.2017.11.009"},"refs":null,"anarec":{"AnaID":295517,"PubliDate":2018,"Pagination":"41-53","XtraPublOfAnaID":null,"ISBN":null,"Volume":"131","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":45506,"SerRR":"Deep-Sea Research, Part I. Oceanographic Research Papers. Elsevier: Oxford.  ISSN 0967-0637; e-ISSN 1879-0119","StandardTitleSer":"Deep-Sea Research, Part I. Oceanographic Research Papers","ISSN":"0967-0637","AbbrevSer":"Deep-Sea Res., Part 1, Oceanogr. Res. 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