2004
DOI: 10.1111/j.1525-142x.2004.04043.x
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Abstract: Spawning marine invertebrates are excellent models for studying fertilization and reproductive isolating mechanisms. To identify variation in the major steps in sea urchin gamete recognition, we studied sperm activation in three closely related sympatric Strongylocentrotus species. Sperm undergo acrosomal exocytosis upon contact with sulfated polysaccharides in the egg-jelly coat. This acrosome reaction exposes the protein bindin and is therefore a precondition for sperm binding to the egg. We found that sulfa… Show more

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Cited by 46 publications
(39 citation statements)
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“…At this stage we outlined an experimental approach to distinguish between the bindin-and the sulfated polysaccharide-based recognition mechanisms using three closely related sympatric Strongylocentrotus species (Biermann et al, 2004). Initially we determined fertilization among the species assessed by counting the proportions of fertilized eggs (Fig.…”
Section: Two Mechanisms Of Sperm-egg Recognition In Sea Urchin Fertilmentioning
confidence: 99%
“…At this stage we outlined an experimental approach to distinguish between the bindin-and the sulfated polysaccharide-based recognition mechanisms using three closely related sympatric Strongylocentrotus species (Biermann et al, 2004). Initially we determined fertilization among the species assessed by counting the proportions of fertilized eggs (Fig.…”
Section: Two Mechanisms Of Sperm-egg Recognition In Sea Urchin Fertilmentioning
confidence: 99%
“…In sea urchins, sperm are activated by elements of the carbohydrate coat surrounding the eggs (called the jelly coat) and in some cases fertilization between species is inhibited by low activation (Biermann et al, 2004). In most cases, however, fertilization is inhibited by failure of the bindin protein on the sperm to attach to a sperm receptor on the egg (Metz and Palumbi, 1996).…”
mentioning
confidence: 99%
“…These impediments to fertilization in both heterospecific crosses indicate the presence of a protein-binding system for gamete recognition. Incompatibility of bindin and bindin-receptors might eventually lead to reproductive isolation, as proposed by Metz et al (1994), Metz and Palumbi (1996), Biermann et al (2004), Lessios (2007), Zigler (2008), and Palumbi (2009). These two species typically do not co-occur throughout their respective ranges, and Geyer and Palumbi (2003) found more genetic separation of bindin genes in their sympatric than in their allopatric populations.…”
Section: Discussionmentioning
confidence: 99%