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dc.contributor.authorQuinitio, Gerald F.
dc.contributor.authorTakahashi, Hiroya
dc.date.accessioned2013-02-04T07:20:46Z
dc.date.available2013-02-04T07:20:46Z
dc.date.issued1992
dc.identifier.citationQuinitio, G. F., & Takahashi, H. (1992). An ultrastructural study on the occurrence of aberrant spermatids in the testis of the river sculpin, Cottus hangiongensis. Japanese Journal of Ichthyology, 39(3), 235–241.en
dc.identifier.issn0021-5090
dc.identifier.urihttp://hdl.handle.net/10862/1393
dc.description.abstractThe process of spermatogenesis and spermiogenesis in the river sculpin,Cottus hangiongensis, was observed ultrastructurally. During spermatogenesis, some germinal cysts in the seminal lobules were found to contain spermatocytes, which were provided with irregularly shaped nuclei, doughnut-shaped mitochondria, and atypical intercellular bridges with multiple disk-like cisternae. In addition, many cysts containing binuclear spermatids were observed in the testis. Within the condensed chromatin of the paired nuclei of the aberrant spermatids, highly electron-dense granules occurred, becoming the core of successively developing chromatin globules. The chromatin globules increased in size, resulting in an enlargement of the paired nuclei. These cells were finally released from the cyst into the lumen of the seminal lobules and underwent further degeneration, thus appearing as characteristic ‘spermatid masses’ in the mature testes.en
dc.language.isoenen
dc.publisherThe Ichthyological Society of Japanen
dc.subjectJapanen
dc.titleAn ultrastructural study on the occurrence of aberrant spermatids in the testis of the river sculpin, Cottus hangiongensisen
dc.typeArticleen
dc.citation.volume39
dc.citation.issue3
dc.citation.spage235
dc.citation.epage241
dc.citation.journalTitleJapanese Journal of Ichthyologyen
dc.subject.asfaanimal reproductive organsen
dc.subject.asfafreshwater fishesen
dc.subject.asfamutationen
dc.subject.asfaspermatogenesisen
dc.subject.asfatestesen
dc.subject.asfaultrastructureen
dc.identifier.doi10.1007/BF02905481
dc.subject.scientificNameCottus hangiongensisen


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