MEPS - Vol. 314 - Feature article

Larvae of the sea urchin Holopneustes purpurascens metamorphose to the juvenile form (photo) in response to histamine, which is produced by some marine algae. Photo: Rebecca Swanson

Swanson RL, de Nys R, Huggett MJ, Green JK, Steinberg PD

 

In situ quantification of a natural settlement cue and recruitment of the Australian sea urchin Holopneustes purpurascens

 

Larvae of the Australian sea urchin Holopneustes purpurascens settle with preference on the red alga Delisea pulchra and on coralline turf, and they metamorphose in response to histamine, which is produced in high quantities by D. pulchra. The settlement cue from coralline algae may derive from bacteria.

 

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