Biology of marine fouling in Mangalore waters

A comprehensive study of the fouling organisms encountered at the New Mangalore Port at Panambur and the Fish Landing Jetty on the Nethravati-Gurpur estuary near the old Mangalore Port, India, was made. Barnacles, oysters, bryozoans, polychaetes and hydroids are the dominant groups of foulers encoun...

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Bibliographic Details
Published in:Marine biology 1977-01, Vol.41 (2), p.127-140
Main Authors: Menon, N. R., Katti, R. J., Shetty, H. P. C.
Format: Article
Language:English
Subjects:
Alderina arabianensis
Balanus amphitrite
Crassostrea
Electra bengalensis
Hydroides norwegica
Marine
Pomatoceros triqueter
Schizoporella cochinensis
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Summary:A comprehensive study of the fouling organisms encountered at the New Mangalore Port at Panambur and the Fish Landing Jetty on the Nethravati-Gurpur estuary near the old Mangalore Port, India, was made. Barnacles, oysters, bryozoans, polychaetes and hydroids are the dominant groups of foulers encountered in this region. Barnacles are by far the most important foulers. Distinct seasonal abundance in settlement was noticed in the different groups. The major peak settlement of barnacles occurs in Nov and Dec. continuous settlement of this group in the harbour indicates the presence of larvae throughout the yr in the marine locality. The absence of freshly settled spat in the estuarine locality shows that these larvae do not foul structures in the Fish Landing Jetty during the monsoon period. The pattern of oyster settlement indicates that the spat of Crassostrea madrasensis and C.cucullata settle during Jan, March, May and Oct in this region. This group remains in the fouling community throughout the yr. Only typical marine bryozoans are harboured in abundance in the fouling community. Polychaetes occur in great numbers during April and Dec. The differences in the quality and quantity of the fouling communities are controlled by their breeding periodicity, seasonal fluctuations in the hydro-graphical conditions, and the spp composition of the sedentary community of this regions.
ISSN:0025-3162
1432-1793
DOI:10.1007/BF00394020