{"refrec":{"BRefID":13046,"RR":"<b>van der Steen, L.J.</b> (1975). Verschillen in gedrag tussen beide seksen van de zeekoet (<i>Uria aalge</i> (Pontopp.)). <i>NIOZ-rapport</i>, 1975(12). Nederlands Instituut voor Onderzoek der Zee: Texel. 18 pp.","BEntID":13046,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>NIOZ-rapport</i>, 1975(12). Nederlands Instituut voor Onderzoek der Zee: Texel.  18 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"van der Steen, L.J.","OrigTitleTranslFlag":1,"Authorstringtrunc":"van der Steen, L.J.","Englishabstract":"Guillemots (<i>Uria aalge</i> do not show any external sexual dimorphism. In the present research in a colony of captive guillemots the differences in behaviour between male and female birds have been studied. The birds were sexed before with the aid of gaschromatographic analyses of blood plasma. The following differences in behaviour have been observed. -The male guillemots occupy the eventual nesting territory before the females. In the greeting ceremony the males show dominant agressive components in their behaviour, the females show submissive behaviour. -Generally speaking the male is the first bird to show courtship-display as an introduction to copulation. -The male is promiscuous, the female partner less so or not at all. In promiscuous situations a male guillemot tends to approach a female while showing agressive display, after which the male makes a special appeasement gesture: the \"pole-attitude\". -In conflicts between partners the female shows submissive behaviour.","AbstractOtherLang":"Zeekoeten (<i>Uria aalge</i>) vertonen geen uitwendige sexuele dimorfie. In mijn onderzoek heb ik aan de hand van een in gevangenschap levende kolonie zeekoeten gekeken welke verschillen in gedrag bestaan tussen de mannelijke en vrouwelijke dieren. De volgende gedragsverschillen zijn waargenomen. -De mannelijke zeekoeten komen eerder op het uiteindelijk nestterritorium voor dan de vrouwelijke. -Bij de begroetingsceremonie vertonen de mannetjes in hun gedrag dominante agressieve componenten. De vrouwtjes vertonen submissief gedrag. -In het algemeen vertoont het mannetje als inleiding tot de copulatie als eerste \"courtship-display\". -Het mannetje gedraagt zich promiscue. De vrouwelijke partner vertoont dit gedrag minder of helemaal niet. -In overspelige situaties benadert in het algemeen een mannelijke zeekoet een vrouwtje in een agressieve houding, waarna het mannetje een speciaal appeasement-gebaar maakt: de paalhouding . -Bij conflicten tussen partners treedt submissief gedrag van het vrouwtje op.","BibLvlCode":"MS","StandardTitle":"Verschillen in gedrag tussen beide seksen van de zeekoet (<i>Uria aalge</i> (Pontopp.))","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-25 01:33:49.256478","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1975,"DateUpdate":"2025-07-18","DateCreate":"2001-07-09","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":13046,"ISBN":null,"PubliDate":1975,"IssueDate":null,"Volume":"1975","Issue":"12","Pagination":"18","Place":"Texel","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":5697,"SerRR":"NIOZ-rapport. 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