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Revolutions in rearing barnacles: rotating flow and substratum for culturing larvae and adults

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Barnacles that live attached to dynamic surfaces, particularly species that are epizoic with marine megafauna, draw benefit from their mobile homes through assistance with passive feeding and escape from predators. A moveable substratum may also offer positive cues for their settling larvae. In this study, we tested a technique for rearing in the laboratory, from larval stage to adult, a barnacle that associates with sea turtles, Chelonibia testudinaria. A dual-stage culturing system was devised, coupling circular tanks with rotating substrata to generate effects of flow and motion. A round-bottomed culturing vessel with gentle cyclical flow was used to raise larvae and then induce them to settle on revolving PVC pipes. The colonized pipes were then transferred to a separate tank for grow-out with continued rotation. Though settlement rates were low, the system proved valuable in obtaining the even distribution of a satisfactory number of juveniles across the pipes and in growing them in the laboratory for up to 2 yrs. This technique opens a variety of avenues of study for taxa that prefer or require a dynamic substratum.
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Document Type: Research Article

Affiliations: 1: Department of Biology, The Citadel, Charleston, South Carolina, USA;, Email: [email protected] 2: Grice Marine Lab, College of Charleston, Charleston, South Carolina, USA; School of Ocean Science and Engineering, University of Southern Mississippi, Ocean Springs, Mississippi, USA

Publication date: January 1, 2021

This article was made available online on May 26, 2020 as a Fast Track article with title: "Revolutions in rearing barnacles: rotating flow and substratum for culturing larvae and adults".

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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