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- W2009933687 abstract "SUMMARY Marine invertebrates exhibit both chemokinesis and chemotaxis phenomena, induced in most cases by the release of water-borne peptides or pheromones. In mollusks, several peptides released during egg-laying improve both male attraction and mating. Unlike other cephalopods, Octopus vulgaris adopts an indirect internal fertilization strategy. We here report on the identification and characterization of a chemoattractant peptide isolated from mature eggs of octopus females. Using two-chamber and time-lapse microscopy assays, we demonstrate that this bioactive peptide is able to increase sperm motility and induce chemotaxis by changing the octopus spermatozoa swimming behavior in a dose-dependent manner. We also provide evidence that chemotaxis in the octopus requires the presence of extracellular calcium and membrane protein phophorylation at tyrosine. This study is the first report on a sperm-activating factor in a non-free-spawning marine animal." @default.
- W2009933687 created "2016-06-24" @default.
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- W2009933687 date "2013-06-15" @default.
- W2009933687 modified "2023-09-27" @default.
- W2009933687 title "Sperm-attractant peptide influences the spermatozoa swimming behavior in internal fertilization in <i>Octopus vulgaris</i>" @default.
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- W2009933687 doi "https://doi.org/10.1242/jeb.081885" @default.
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