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Larval settlement behaviour of the barnacle Balanus reticulatus in the laboratory

Published online by Cambridge University Press:  06 September 2002

V. Thiyagarajan ,
K.V.K. Nair ,
T. Subramoniam  and
V.P. Venugopalan
V. Thiyagarajan
Affiliation:
Water and Steam Chemistry Laboratory, BARC Facilities, Kalpakkam 603 102, India Present address: Department of Biology, The Hong Kong University of Science and Technology, Hong Kong, E-mail: vtraj@ust.hk
K.V.K. Nair
Affiliation:
Water and Steam Chemistry Laboratory, BARC Facilities, Kalpakkam 603 102, India Present address: National Institute of Ocean Technology, Chennai 600036, India
T. Subramoniam
Affiliation:
Water and Steam Chemistry Laboratory, BARC Facilities, Kalpakkam 603 102, India Department of Zoology, University of Madras, Chennai 600 025, India
V.P. Venugopalan
Affiliation:
Water and Steam Chemistry Laboratory, BARC Facilities, Kalpakkam 603 102, India
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Abstract

The effect of algal food concentration, substratum, light, salinity, cyprid density and ‘footprints’, cyprid age, films of organic biopolymers, bacteria and diatoms on the settlement of Balanus reticulatus cyprids were studied. The algal food quantity (from 7×104 to 4×105 cells ml−1) fed to nauplii had a significant effect on the settlement. Cyprids failed to settle on glass surfaces but would settle on polystyrene. Light, cyprid ‘footprints’ and age significantly affected the settlement, however, salinity (from 20 to 40 psu) and cyprid density (from 5 to 200 per 5 ml of seawater) had no effect on the settlement. Films of organic polymers, bacteria, and diatoms inhibited the settlement compared to control. It is suggested that cyprids of B. reticulatus can serve as an appropriate test material for antifouling bioassays in those areas where the former forms a dominant species.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 82 , Issue 4 , August 2002 , pp. 579 - 582
Copyright
2002 Marine Biological Association of the United Kingdom

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