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Settlement and recruitment of the barnacle Balanus amphitrite from a tropical environment influenced by monsoons

DRS at CSIR-National Institute of Oceanography

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Title Settlement and recruitment of the barnacle Balanus amphitrite from a tropical environment influenced by monsoons
 
Creator Gaonkar, C.A.
Anil, A.C.
 
Subject Recruitment
Larval settlement
Temporal variations
Tropical environment
 
Description Studies on the settlement and the subsequent recruitment of intertidal organisms are crucial steps in understanding their population structure in a particular bioregion. However, studying the recruitment of intertidal organisms such as barnacles, with two-phase life cycle, and understanding the determinants of recruitment is a complex problem. Many processes which operate during the pelagic pre-settlement phase and benthic post-settlement phase at different spatial and temporal scales can determine the fate of barnacle populations. In this study, observations were carried out on settlement and recruitment of the intertidal barnacle Balanus amphitrite from a tropical environment influenced by monsoons at spatial and temporal scales. Settlement and recruitment both showed significant temporal variations. In general, settlement and recruitment was lower during the monsoon season except during monsoon breaks. Consistency in settlement and recruitment was mostly observed during the pre-monsoon season, and it coincided with peaks in larval abundance observed during the same season. In general, settlement remained more or less similar on different types of substrata, whereas recruitment differed significantly. Temporal variations observed in settlement and recruitment of barnacles could be due to the influence of monsoons in this region, which leads to seasonal fluctuations in physical factors such as local hydrodynamics, that influence the retention and dispersal of larvae in the adult habitats, and could also be due to variations in the availability of food for the larvae and the settled populations.
 
Date 2014-01-15T04:24:35Z
2014-01-15T04:24:35Z
2013
 
Type Journal Article
 
Identifier Journal of the Marine Biological Association of the United Kingdom, vol.93(5); 2013; 1335-1349
http://drs.nio.org/drs/handle/2264/4438
 
Language en
 
Rights An edited version of this paper was published ? Marine Biological Association of the United Kingdom, 2013. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Marine Biological Association of the United Kingdom