Crustaceans help to fertilize seaweeds, study finds sciencemagazine
The small crustacean Idotea balthica facilitates male gamete dispersal and fertilization in the red alga Gracilaria gracilis. They use the densely branched, bushy red algae for shelter and feed on microalgae that grow on their surface. Credit: © Wilfried Thomas @Station Biologique de Roscoff, CNRS, SU, Roscoff, France
This video shows the aquarium containing males and females of G. gracilis with I. balthica. The isopods of different sizes are foraging on the seaweed. Some of them are difficult to observe as they are firmly gripped onto the algae, and spermatia can thus deposit on the setae of their pereiopods. Credit: IRL 3614, Station Biologique de Roscoff, CNRS, SU, Roscoff, France
The complex interactions, and their outcomes, between the seaweed , isopods and diatoms. A plus sign indicates a positive effect of one species on another, while a minus sign indicates a negative impact. Credit: Lavaut et al. Spermatia are stuck to its cuticle. The close-up shows them clumped on the ends of its legs. Credit: © Sébastien Colin
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