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Signals for gamete release by intertidal species with external fertilization
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| Clockwise from top left: Carla Monteiro sampling Fucus gametes during tidal cycles, Viana do Castelo; Fertilized Fucus vesiculosus egg, both the egg and sperm pronuclei are visble (hematoxylin stained) (photo by E Serrao); Fucus vesiculosus embryos growing on sampling disks (photo by E Serrao); Transplanting Fucus at Viana. Carla, Rafa, Lydia, Gareth (photo by E Serrao); transplanted rocks with Fucus vesiculosus, and zygote settlement disks, Ericeira (photo by Soraia Santos); Fucus vesiculosus eggs stained with calcofluor white. Only fertilized eggs produce a cell wall and become fluorescent (photo by E Serrao); | |
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