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Recruitment of the barnacle Balanus amphitrite in a tropical estuary: implications of environmental perturbation, reproduction and larval ecology

Published online by Cambridge University Press:  27 June 2005

Dattesh V. Desai
Affiliation:
Marine Corrosion and Materials Research Division (MCMRD), National Institute of Oceanography, Dona Paula, Goa 403 001, India
A.C. Anil
Affiliation:
Marine Corrosion and Materials Research Division (MCMRD), National Institute of Oceanography, Dona Paula, Goa 403 001, India

Abstract

Phytoplankton blooms are known to influence barnacle recruitment and in boreal regions spring blooms work as an important trigger. Close to the west coast of the sub-continent of India, blooms tend to be triggered by breaks in the monsoon and the recurrence of the monsoon after a short break can stress the new recruits. The recruitment of Balanus amphitrite, an acorn barnacle, at Dona Paula Bay at the mouth of Zuari estuary, Goa, India was studied. Observations included variations in recruitment, larval abundance, development and reproduction. Adult conditioning and inter-brood variations were important factors in the larval ecology of this organism. The results indicate that the impulsive release of larvae during breaks between monsoons could be a short-sighted luxury for Balanus amphitrite in these waters. Temporal variations or recruitment failure in such environments can be attributed to inappropriate cue synchronization.

Type
Research Article
Copyright
2005 Marine Biological Association of the United Kingdom

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