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dc.contributor.authorMichael J. Stewarten_US
dc.contributor.authorPraphaporn Stewarten_US
dc.contributor.authorNantawan Soonklangen_US
dc.contributor.authorVichai Linthongen_US
dc.contributor.authorPeter J. Hannaen_US
dc.contributor.authorWei Duanen_US
dc.contributor.authorPrasert Sobhonen_US
dc.contributor.otherDeakin Universityen_US
dc.contributor.otherFaculty of Medicine, Thammasat Universityen_US
dc.contributor.otherMahidol Universityen_US
dc.identifier.citationTissue and Cell. Vol.42, No.3 (2010), 137-150en_US
dc.description.abstractSpermatogenesis in the blue swimming crab, Portunus pelagicus, is described by light and electron microscopy. The testis is composed of anterior (AT) and posterior (PT) lobes, that are partitioned into lobules by connective tissue trabecula, and further divided into zones (germinal, transformation and evacuation), each with various stages of cellular differentiation. The vas deferens is classified into three distinct regions: anterior (AVD), median (MVD), and posterior (PVD), on the presence of spermatophores and two secretions, termed substance I and II. Based on the degree and patterns of heterochromatin, spermatogenesis is classified into 13 stages: two spermatogonia (SgA and SgB), six primary spermatocytes (leptotene, zygotene, pachytene, diplotene, diakinesis, and metaphase), a secondary spermatocyte (SSc), three spermatids (St 1-3), and a mature spermatozoon. Spermatid stages are differentiated by chromatin decondensation and the formation of an acrosomal complex, which is unique to brachyurans. Mature spermatozoa are aflagellated, and have a nuclear projection and a spherical acrosome. AUT-PAGE and Western blots show that, during chromatin decondensation, there is a reduction of most histones, with only small amounts of H2B and H3 remaining in mature spermatozoa. © 2010 Elsevier Ltd.en_US
dc.rightsMahidol Universityen_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.titleSpermatogenesis in the blue swimming crab, Portunus pelagicus, and evidence for histones in mature sperm nucleien_US
Appears in Collections:Scopus 2006-2010

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