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- W2018466189 abstract "Male platyfish, Xiphophorus maculatus, ranging in age from 12 to 54 months (normal life span is 30 months), were examined for age-related changes in the distribution of immunoreactive gonadotropin (ir-GTH) and luteinizing hormone releasing hormone (ir-LHRH) in their pituitary glands, and for changes in the histology of their testes. Males sacrificed at 13 and 16 months of age served as controls. Immunocytochemical methods demonstrate that even in the oldest fish, some almost twice the average platyfish life span, ir-GTH and ir-LHRH are localized in the same pituitary cell types in the caudal pars distalis and pars intermedia as in younger sexually mature fish. The testes of old fish continue to contain all stages of spermatogenesis; however, there are age-related increases in the amount of intertubular connective tissue and the relative number of spermatozeugmata, and distortions in the organization of acini. Our observations indicate that GTH and LHRH production and spermatogenesis continue, and thus a potential for reproductive capability persists, in male platyfish up to the time of their death resulting from old age." @default.
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- W2018466189 date "1983-06-01" @default.
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- W2018466189 title "Continued reproductive potential in aging platyfish as demonstrated by the persistence of gonadotropin, luteinizing hormone releasing hormone and spermatogenesis" @default.
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- W2018466189 doi "https://doi.org/10.1016/0047-6374(83)90103-3" @default.
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