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10.3390/jmse8120968
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Article

Anatomy and Ultrastructure of the Cyprid Temporary Adhesive System in Two Species of Acorn Barnacle

by
Joshua J. Raine
1,*,
Nick Aldred
1,2 and
Anthony S. Clare
1
1
School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, Newcastle NE1 7RU, UK
2
School of Life Sciences, University of Essex, Colchester CO4 3SQ, UK
*
Author to whom correspondence should be addressed.
J. Mar. Sci. Eng. 2020, 8(12), 968; https://doi.org/10.3390/jmse8120968
Submission received: 30 October 2020 / Revised: 20 November 2020 / Accepted: 24 November 2020 / Published: 27 November 2020
(This article belongs to the Special Issue Larval Settlement on Marine Surfaces: The Role of Physico-Chemical Interactions)
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Abstract

Acorn barnacles are sessile as adults and select their settlement site as a cypris larva. Cyprids are well adapted to exploring surfaces in dynamic environments, using a temporary adhesive secreted from the antennules to adhere during this process. The temporary adhesive and the secretory structures are poorly characterized. This study used serial block-face scanning electron microscopy and three-dimensional modelling to elucidate the anatomy related to temporary adhesion. The temporary adhesive glands of two acorn barnacle species, Balanus amphitrite and Megabalanus coccopoma, were located in the proximal region of the first antennular segment, contrary to previous descriptions that placed them in the more distal second segment. The temporary adhesive systems of these acorn barnacles are therefore similar to that described for the stalked barnacle, Octolasmis angulata, although not identical. Knowledge of the true location of the temporary adhesive glands will underpin future studies of the production, composition and secretion of the adhesive.
Keywords: barnacles; larvae; anatomy; adhesion; electron microscopy barnacles; larvae; anatomy; adhesion; electron microscopy

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MDPI and ACS Style

Raine, J.J.; Aldred, N.; Clare, A.S. Anatomy and Ultrastructure of the Cyprid Temporary Adhesive System in Two Species of Acorn Barnacle. J. Mar. Sci. Eng. 2020, 8, 968. https://doi.org/10.3390/jmse8120968

AMA Style

Raine JJ, Aldred N, Clare AS. Anatomy and Ultrastructure of the Cyprid Temporary Adhesive System in Two Species of Acorn Barnacle. Journal of Marine Science and Engineering. 2020; 8(12):968. https://doi.org/10.3390/jmse8120968

Chicago/Turabian Style

Raine, Joshua J., Nick Aldred, and Anthony S. Clare. 2020. "Anatomy and Ultrastructure of the Cyprid Temporary Adhesive System in Two Species of Acorn Barnacle" Journal of Marine Science and Engineering 8, no. 12: 968. https://doi.org/10.3390/jmse8120968

APA Style

Raine, J. J., Aldred, N., & Clare, A. S. (2020). Anatomy and Ultrastructure of the Cyprid Temporary Adhesive System in Two Species of Acorn Barnacle. Journal of Marine Science and Engineering, 8(12), 968. https://doi.org/10.3390/jmse8120968

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