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dc.contributor.authorMcClusky, Leon Mendel
dc.contributor.authorNielsen, Julius
dc.date.accessioned2024-08-29T11:32:18Z
dc.date.available2024-08-29T11:32:18Z
dc.date.issued2024-01-27
dc.description.abstractSertoli cells of sharks are non-permanent components of the spermatocyst that they share exclusively with only one germ cell stage. After spermiation, all Sertoli cells, and thus the whole spent cyst, are disposed of in an area adjacent to the spermatozoal spermatocysts, that is, the resorption zone (RZ). Differences in the histology and magnitude of the RZ of the mature blue shark and Greenland shark correlate with differences in how spent cysts are dismantled. In the blue shark's RZ, the spent cyst's Sertoli nuclei were synchronously and stepwise fragmented into pyknotic bodies that were eventually resorbed in a whorl in the RZ interstitium. Conversely, cyst dismantling in the Greenland shark, that also lacked a spatially definitive RZ, revealed redundancy. One mode entailed the sloughing of the bulky Sertoli nuclei through an indistinct cyst–ductule transition area into its attached collecting ductule. A second mode entailed the asynchronous, progressive fragmentation of the bulky Sertoli nuclei into membrane-enclosed pyknotic bodies. Both these modes solely entailed an internally coordinated demise of the spent cyst and whose basal lamina remained intact almost right to the end. Whatever the underlying mechanisms of these differences, these findings nonetheless reveal species-specificity in the clearing up of the elasmobranch testicular parenchyma after the completion of a round of spermiogenesis. One consideration is the blue shark's expansive immune cell augmented RZ, that adjoins the animal's bone marrow equivalent tissue. The notable finding of a second conspicuous Sertoli cell type in the Greenland shark's spent cysts is also discussed.en_US
dc.identifier.citationMcClusky L, Nielsen J. A histological study of the protracted dismantling of the spent (Sertoli-only) shark spermatocyst post-spermiation: Insight from species with or without testis-associated lymphomyeloid tissue. Anatomia, Histologia, Embryologia. Journal of Veterinary Medicine Series C. 2024;53(2)en_US
dc.identifier.cristinIDFRIDAID 2224972
dc.identifier.doi10.1111/ahe.13017
dc.identifier.issn0340-2096
dc.identifier.issn1439-0264
dc.identifier.urihttps://hdl.handle.net/10037/34466
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalAnatomia, Histologia, Embryologia. Journal of Veterinary Medicine Series C
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)en_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Basale biofag: 470en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Basic biosciences: 470en_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Basale biofag: 470::Cellebiologi: 471en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Basic biosciences: 470::Cell biology: 471en_US
dc.titleA histological study of the protracted dismantling of the spent (Sertoli-only) shark spermatocyst post-spermiation: Insight from species with or without testis-associated lymphomyeloid tissueen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)