Article: Research from Brussels Free University in marine ecology provides new insights.

According to recent research from Brussels, Belgium, "In many symbioses involving marine crustaceans the nature of the relationships and the population biology remain overlooked, obscuring the understanding of their ecology and evolution. The association between the pea crab Dissodactylus primitivus and the irregular sea urchin Meoma ventricosa was investigated in the Caribbean Sea."

"The work tested the predictions provided by an evolutionary model, in which host-switching behaviour and polygynandry are expected for the mating system of D. primitivus. The crab prevalence (infected sea urchins) and mean burden were high and variable between sites and/or years. ...

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