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dc.contributor.authorQuinitio, Gerald F.
dc.contributor.authorTakemura, Akihiro
dc.contributor.authorGoto, Akira
dc.date.accessioned2013-01-15T07:37:37Z
dc.date.available2013-01-15T07:37:37Z
dc.date.issued1989
dc.identifier.citationQuinitio, G. F., Takemura, A., & Goto, A. (1989). Ovarian development and changes in the serum vitellogenin levels in the river sculpin, Cottus hangiongensis, during an annual reproductive cycle. Bulletin - Faculty of Fisheries Hokkaido University, 40(4), 246-253.en
dc.identifier.issn0018-3458
dc.identifier.urihttp://hdl.handle.net/10862/1305
dc.description.abstractAnnual changes in the ovarian development and serum vitellogenin concentration were investigated in the river sculpin, Cottus hangiongensis, sampled monthly from a river in southern Hokkaido, Japan. Ovarian development started advancing from summer and continued during the winter months until March with a maximum mean gonadosomatic index (GSI) of 15.99%. Hepatosomatic index (HSI) was also highest in March with a range of 5.13-5.95%. Spawning season usually occured from April to May. Annual changes in serum vitellogenin level correlated very well with the patterns of GSI and HSI, as well as histological changes of the ovary. However, high serum vitellogenin was maintained in March and April.en
dc.language.isoenen
dc.publisherFaculty of Fisheries, Hokkaido Universityen
dc.subjectCottus
dc.subjectVitellogeninsen
dc.subjectBlood serumen
dc.titleOvarian development and changes in the serum vitellogenin levels in the river sculpin, Cottus hangiongensis, during an annual reproductive cycleen
dc.typeArticleen
dc.citation.volume40
dc.citation.issue4
dc.citation.spage246
dc.citation.epage253
dc.citation.journalTitleBulletin - Faculty of Fisheries Hokkaido Universityen
seafdecaqd.library.callnumberVF SJ 0269
seafdecaqd.databank.controlnumber1989-26
dc.subject.asfaOvariesen
dc.subject.asfaBiological developmenten
dc.subject.asfaSeasonal variationsen
dc.subject.asfaReproductionen
dc.subject.asfaRiversen


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