Progesterone induces activation in Octopus vulgaris spermatozoa

Molecular Reproduction and Development
E TostiG Gragnaniello

Abstract

The purpose of the present study was to determine whether Octopus vulgaris spermatozoa are activated by progesterone stimulation. Spermatozoa were collected from the spermatophores in the Needham's sac of the male (MS) and from the spermathecae of oviducal glands of the female (FS). We used transmission (TEM) and scanning (SEM) electron microscopy to study the morphology of untreated, Ca2+ ionophore A23187 and progesterone-treated MS spermatozoa, and untreated FS spermatozoa. We showed that ionophore and progesterone stimulation of MS spermatozoa induce breakdown of the membranes overlapping the acrosomal region, exposing the spiralized acrosome. These modifications resemble the acrosome reaction observed in other species. FS stored in the spermathecae did not show the membranes covering the acrosomal region present in the MS spermatozoa. When ionophore and progesterone treatments were performed in Ca2+-free artificial sea water, no changes were observed, suggesting the role of external calcium in modifying membrane morphology. Lectin studies showed a different fluorescence distribution and membrane arrangement of FS-untreated spermatozoa with respect to the MS, suggesting that spermatozoa transferred in the female genital trac...Continue Reading

References

Jan 21, 1975·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·D Froesch, H J Marthy
Jan 1, 1992·Andrologia·C ForestaM Zorzi
May 1, 1992·The American Journal of Physiology·M Eisenbach, D Ralt
Jan 1, 1985·Current Topics in Cellular Regulation·B M ShapiroT Kazazoglou
Feb 17, 1970·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·T MannJ B Thiersch
Feb 17, 1970·Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character·A W MartinT Mann
Apr 1, 1966·Experimental Cell Research·L O Drevius, H Eriksson
Mar 1, 1994·Molecular Reproduction and Development·N Tanphaichitr, C Hansen
Jul 1, 1993·Developmental Biology·C R Ward, G S Kopf
May 1, 1993·Molecular Reproduction and Development·E TostiB Dale
Nov 1, 1994·Zygote : the Biology of Gametes and Early Embryos·E Tosti
Oct 23, 1996·Biochemical and Biophysical Research Communications·A D'AnielloM M Di Fiore
Nov 1, 1996·Molecular Reproduction and Development·M N Llanos, M C Anabalón
Dec 22, 1996·Proceedings. Biological Sciences·J D RobertsonM Hiscat
Jan 1, 1997·Annual Review of Physiology·M Wehling
Apr 16, 1998·Biochimica Et Biophysica Acta·A GuerreroA Darszon
Aug 14, 1998·The Journal of Comparative Neurology·A Di Cosmo, C Di Cristo

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Citations

Apr 6, 2013·Invertebrate Neuroscience : in·Carlo Di Cristo
Feb 26, 2004·General and Comparative Endocrinology·Laura CanesiGabriella Gallo
Aug 2, 2005·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Martha KaloyianniStefanos Dailianis
Feb 24, 2005·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·Annunziata CuomoElisabetta Tosti
Nov 19, 2019·Biological Reviews of the Cambridge Philosophical Society·Scott PitnickSteve Dorus
Jan 1, 2011·Journal of Aquatic Animal Health·Shawn E Larson, Roland C Anderson
Oct 30, 2019·Scientific Reports·Federica MaioleLetizia Zullo
May 31, 2013·The Journal of Experimental Biology·Emilia De LisaAnna Di Cosmo

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