PMID: 18723641Aug 30, 2008Paper

Articulated coralline algae of the genus Amphiroa are highly effective natural inducers of settlement in the tropical abalone Haliotis asinina

The Biological Bulletin
Elizabeth A WilliamsSandie M Degnan

Abstract

The initiation of metamorphosis in marine invertebrates is strongly linked to the environment. Planktonic larvae typically are induced to settle and metamorphose by external cues such as coralline algae (Corallinaceae, Rhodophyta). Although coralline algae are globally abundant, invertebrate larvae of many taxa settle in response to a very limited suite of species. This specificity impacts population structure, as only locations with the appropriate coralline species can attract new recruits. Abalone (Gastropoda, Haliotidae) are among those taxa in which closely related species are known to respond to different coralline algae. Here we identify highly inductive natural cues of the tropical abalone Haliotis asinina. In contrast to reports for other abalone, the greatest proportion of H. asinina larvae are induced to settle and metamorphose (92.8% to 100% metamorphosis by 48 h postinduction) by articulated corallines of the genus Amphiroa. Comparison with field distribution data for different corallines suggests larvae are likely to be settling on the seaward side of the reef crest. We then compare the response of six different H. asinina larval families to five different coralline species to demonstrate that induction by the bes...Continue Reading

Citations

Dec 3, 2010·Natural Product Reports·Valerie J PaulKoty Sharp
Jan 20, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sandie M Degnan, Bernard M Degnan
Apr 20, 2016·Annals of Botany·Geerat J Vermeij

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