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. 2020 Jul 15;10(7):200118. doi: 10.1098/rsob.200118

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© 2020 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Diagrams of typical cytoplasmic Ca²⁺ changes at fertilization across various species. From top to bottom: nematode (Caenorhabditis elegans) [62], fruit fly (Drosophila melanogaster) [63], purple mussel (Septifer virgatus) [7], sea urchin (Paracentrotus lividus) [64], zebrafish (Danio rerio) [65], frog (Xenopus laevis) [66], newt (Cynops pyrrhogaster) [67] and mouse (Mus musculus) [68]. Time indicated on scale bar for each Ca²⁺ trace. The three lines on the newt trace represent spatially distinct signals induced by different sperm during physiological polyspermy. Traces adapted from indicated references.