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Article: The influence of social factors on adult sex change and juvenile sexual differentiation in a diandric, protogynous epinepheline, Cephalopholis boenak (Pisces, Serranidae)

TitleThe influence of social factors on adult sex change and juvenile sexual differentiation in a diandric, protogynous epinepheline, Cephalopholis boenak (Pisces, Serranidae)
Authors
KeywordsAdult sex change
Cephalopholis boenak
Juvenile sexual differentiation
Protogynous hermaphroditism
Social factor
Issue Date2004
PublisherBlackwell Publishing Ltd.
Citation
Journal Of Zoology, 2004, v. 264 n. 3, p. 239-248 How to Cite?
AbstractAdult sex change and juvenile sexual differentiation in the protogynous epinepheline Cephalopholis boenak were demonstrated in captivity to be influenced by social factors. Adult sex change in C. boenak occurred in two directions, female to male and male to female. The presence or absence of a larger male plays an important role in adult female sex change; female(s) did not change sex in the presence of a larger male, but sex change occurred after the removal of the larger males in the same social groups. In male pairs, either the larger or the smaller male changed sex. Male to female sex change has not been reported previously in Cephalopholis, and only rarely in epinephelines. This is the first report of direct male sexual differentiation from juveniles (i.e. primary male development), through manipulating the number of juveniles, in a protogynous epinepheline. All isolated, single, juveniles differentiated directly as males, and male to female sex ratios did not differ significantly from 1:1 in all experimental social groups of two to four juveniles. Differentiating males grew significantly faster than differentiating females and undifferentiated juveniles during the 57-week experimental period. The role of growth rate in sex determination in C. boenak is not known but clearly plays a part in juvenile sexual differentiation and merits further investigation. Social factors influencing bi-directional adult sex change and juvenile sexual differentiation are a reflection of plasticity of sexual expression in C. boenak, in particular, and the Serranidae in general.
Persistent Identifierhttp://hdl.handle.net/10722/73385
ISSN
2015 Impact Factor: 1.819
2015 SCImago Journal Rankings: 1.032
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLiu, Men_HK
dc.contributor.authorSadovy, Yen_HK
dc.date.accessioned2010-09-06T06:50:46Z-
dc.date.available2010-09-06T06:50:46Z-
dc.date.issued2004en_HK
dc.identifier.citationJournal Of Zoology, 2004, v. 264 n. 3, p. 239-248en_HK
dc.identifier.issn0952-8369en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73385-
dc.description.abstractAdult sex change and juvenile sexual differentiation in the protogynous epinepheline Cephalopholis boenak were demonstrated in captivity to be influenced by social factors. Adult sex change in C. boenak occurred in two directions, female to male and male to female. The presence or absence of a larger male plays an important role in adult female sex change; female(s) did not change sex in the presence of a larger male, but sex change occurred after the removal of the larger males in the same social groups. In male pairs, either the larger or the smaller male changed sex. Male to female sex change has not been reported previously in Cephalopholis, and only rarely in epinephelines. This is the first report of direct male sexual differentiation from juveniles (i.e. primary male development), through manipulating the number of juveniles, in a protogynous epinepheline. All isolated, single, juveniles differentiated directly as males, and male to female sex ratios did not differ significantly from 1:1 in all experimental social groups of two to four juveniles. Differentiating males grew significantly faster than differentiating females and undifferentiated juveniles during the 57-week experimental period. The role of growth rate in sex determination in C. boenak is not known but clearly plays a part in juvenile sexual differentiation and merits further investigation. Social factors influencing bi-directional adult sex change and juvenile sexual differentiation are a reflection of plasticity of sexual expression in C. boenak, in particular, and the Serranidae in general.en_HK
dc.languageengen_HK
dc.publisherBlackwell Publishing Ltd.en_HK
dc.relation.ispartofJournal of Zoologyen_HK
dc.rightsJournal of Zoology. Copyright © Blackwell Publishing Ltd.en_HK
dc.subjectAdult sex changeen_HK
dc.subjectCephalopholis boenaken_HK
dc.subjectJuvenile sexual differentiationen_HK
dc.subjectProtogynous hermaphroditismen_HK
dc.subjectSocial factoren_HK
dc.titleThe influence of social factors on adult sex change and juvenile sexual differentiation in a diandric, protogynous epinepheline, Cephalopholis boenak (Pisces, Serranidae)en_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0952-8369&volume=264&spage=239&epage=248&date=2004&atitle=The+influence+of+social+factors+on+adult+sex+change+and+juvenile+sexual+differentiation+in+a+diandric,+protogynous+epinepheline,+Cephalopholis+boenak+(Pisces,+Serranidae)en_HK
dc.identifier.emailSadovy, Y: yjsadovy@hkucc.hku.hken_HK
dc.identifier.authoritySadovy, Y=rp00773en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1017/S0952836904005631en_HK
dc.identifier.scopuseid_2-s2.0-5144224740en_HK
dc.identifier.hkuros96079en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-5144224740&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume264en_HK
dc.identifier.issue3en_HK
dc.identifier.spage239en_HK
dc.identifier.epage248en_HK
dc.identifier.isiWOS:000225175300003-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLiu, M=55458139600en_HK
dc.identifier.scopusauthoridSadovy, Y=6603830002en_HK

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