Biogeographical distribution of tintinnids (Protozoa: Ciliata) from Porto Novo waters

W.D. Naidu, K. Krishnamurthy

Abstract



Fortynine species of tintinnids have been identified from aquatic biotopes: neritic, estuarine, backwater and mangrove on the Coromandel Coast of India. Depending on the frequency of occurrence, the tintinnids were divided into four groups namely, a) frequent species, b) seasonal species, c) restricted species and d) rare species. The appearance of the autochthonous and allochthonous species mostly during summer and premonsoon seasons is attributed to the prevailing circulation pattern in the Bay of Bengal associated with easterly flowing monsoon current. All the 49 species of tintinnids have been grouped as per their biogeographically known distribution. Porto Novo coastal waters possessed all representative groups such as the temperate-tropical, inter-tropical, Indo-Pacific, Indian Ocean, Atlantic Ocean, Pacific and cold water, thus suggesting the possible influence of the current distributories along the coast line

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