{"refrec":{"BRefID":337606,"RR":"<b>Gainsford, A.; Jones, G.P.; Hobbs, J.-P.A.; Heindler, F.M.; van Herwerden, L.</b> (2020). Species integrity, introgression, and genetic variation across a coral reef fish hybrid zone. <i>Ecol. Evol. 10(21)</i>: 11998-12014. <a href=\"https://hdl.handle.net/10.1002/ece3.6769\" target=\"_blank\">https://hdl.handle.net/10.1002/ece3.6769</a>","BEntID":334229,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Ecol. Evol. 10(21)</i>: 11998-12014. <a href=\"https://hdl.handle.net/10.1002/ece3.6769\" target=\"_blank\">https://hdl.handle.net/10.1002/ece3.6769</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Gainsford, A.; Jones, G.P.; Hobbs, J.-P.A.; Heindler, F.M.; van Herwerden, L.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Gainsford, A. <i>et al.</i>","Englishabstract":"Hybridization and introgression are evolutionarily significant phenomena breaking down species boundaries. “Hybrid zones” (regions of species overlap and hybridization) enable quantification of hybridization frequency and examination of mechanisms driving and maintaining gene flow. The hybrid anemonefish <i>Amphiprion leucokranos</i> is found where parent species (<i>A. chrysopterus; A. sandaracinos</i>) distributions overlap. Here, we examine geographic variation in hybridization and introgression, and potential impacts on parent species integrity through assessing relative abundance, social group composition, and genetic structure (mtDNA cytochrome <i>b</i>, 21 microsatellite loci) of taxa at three hybrid zone locations: Kimbe Bay (KB) and Kavieng (KA), Papua New Guinea; the Solomon Islands (SO). Relative abundances of and size disparities between parent species apparently drive hybridization frequency, introgression patterns, and genetic composition of taxa. Conspecific groups are most common in KB (65%) where parent species are similarly abundant. Conversely, mixed species groups dominate SO (82%), where <i>A. chrysopterus</i> is more abundant. Hybrids most commonly cohabit with <i>A. sandaracinos</i> in KB (17%), but with <i>A. chrysopterus</i> in KA (22%) and SO (50%). Genetic differentiation (nDNA) analyses indicate that parent species remain distinct, despite ongoing hybridization and hybrids are genetically similar to <i>A. sandaracinos—</i>resulting from persistent backcrossing with this smallest species. This study shows that hybridization outcomes may depend on the social and ecological context in which taxa hybridize, where relative abundance and disparate size of parent species explain the frequency and patterns of hybridization and introgression in the <i>A. leucokranos</i> hybrid zone, reflecting size-based dominance behaviors of anemonefish social groups.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Species integrity, introgression, and genetic variation across a coral reef fish hybrid zone","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-21 01:33:00.395170","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Amphiprion leucokranos; anemonefish; ecological genetics; hybridization; size-based hierarchy","OtherDescriptors":null,"Notes":null,"AnaPub":2020,"MonPub":null,"DateUpdate":"2023-05-09","DateCreate":"2021-05-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000579883700001","VABBcode":null,"OpenAcc":1,"Handle":"10.1002/ece3.6769"},"refs":null,"anarec":{"AnaID":337606,"PubliDate":2020,"Pagination":"11998-12014","XtraPublOfAnaID":null,"ISBN":null,"Volume":"10","Issue":"21","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":212989,"SerRR":"Ecology and Evolution. 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