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Marine Ecology Progress Series

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Cyprid larva of the barnacle Amphibalanus amphitrite (left) responds to environmental cues, settling onto suitable substrate and metamorphosing into a juvenile (right).

Photos: Yang Zhao & Ming Bi

Jiang Z, Ping S, Jin C, Tu C, Zhou X

Transcriptome analysis provides insights into a molecular mechanism of histamine response in the cyprid larvae of Amphibalanus amphitrite

The barnacle Amphibalanus amphitrite is a common marine fouling organism. Using transcriptome analysis, we investigated the molecular mechanisms of A. amphitrite cyprid larval settlement. We found that larval settlement of A. amphitrite is enhanced by histamine and inhibited by antihistamine. Transcriptome data indicate mitogen-activated protein kinase signaling is critical in barnacle larval settlement. Furthermore, the gene AdipoR affects larval settlement by regulating fatty acid oxidation and also the cyprid energy metabolism. Our results provide new insights into the molecular mechanisms underlying the histamine-induced larval settlement of barnacles, and may inspire further research to develop novel anti-fouling techniques targeting these molecular mechanisms.


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