{"refrec":{"BRefID":126464,"RR":"<b>Bentz, K.L.M.</b> (1976). Gill arch morphology of the Cape hakes <i> Merluccius capensis</i> Cast. and <i>M. paradoxus</i> Franca. <i>Fisheries Bulletin (South Africa) 8</i>: 17-22","BEntID":120549,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Fisheries Bulletin (South Africa) 8</i>: 17-22","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bentz, K.L.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bentz, K.L.M.","Englishabstract":"At {approx} 40 cm total fish length, the diet of<i> M. capensis</i> changes from amphipods, euphausiids and a low percentage of myctophids to a virtually exclusively piscivorous diet of predominantly small hake. In <i>M. paradoxus</i> the change from a zooplanktivorous to a piscivorous diet occurs at a fish length of {approx} 50 cm. A <i>M. capensis</i> of 43 cm length and a <i>M. paradoxus</i> of 49 cm have the same raker length (9 mm). A <i>M. capensis</i> of 43 cm length and a <i>M. paradoxus</i> of 50 cm have a similar gap between rakers (2.7 mm). Hence, it appears that when the raker length reaches +- 9 mm and the gap between gill rakers reaches +- 2.7mm the gills become inefficient for zooplankton filtering and a change in feeding habit takes place. It is clear that feeding habits and gill structures are closely related and that for <i>M. capensis</i> and <i>M. paradoxus</i> the efficiency of the filtering apparatus does not increase with fish size. The gill rakers develop no further processes and, owing to an increase in the gap between rakers, the mesh size of the filtering area becomes more coarse and therefore less efficient. This sets a limit on the ability to retain smaller prey so that larger prey is taken as the individuals grow.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Gill arch morphology of the Cape hakes <i> Merluccius capensis</i> Cast. and <i>M. paradoxus</i> Franca","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-15 01:31:06.353468","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1976,"MonPub":null,"DateUpdate":"2008-09-30","DateCreate":"2008-09-30","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":126464,"PubliDate":1976,"Pagination":"17-22","XtraPublOfAnaID":null,"ISBN":null,"Volume":"8","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44501,"SerRR":"Fisheries Bulletin: Contributions to Oceanography and Fisheries Biology = Visserye-bulletin: Bydraes tot oseanografie en visserybiologie. 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