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|Title:||Swarms of ctenophore Pleurobrachia pileus (O. F. Müller, 1776) in the waters of Sundarban: A menace to the fisheries?|
Vivek, M A
|Keywords:||Bay of Bengal;Ctenophora;Pleurobrachia pileus;Sundarban;Swarming|
|Abstract:||An unusual swarm of Pleurobrachia pileus (O. F. Müller, 1776) was recorded in the Sundarban coastal waters of Bay of Bengal, Northern Indian Ocean during the winter monsoon season of 2018. The species occurred in the Sundarban waters with an average abundance of 6,766 individual m-3 which in turn diminished the population of other zooplankton and fish. The hydrographical characters observed in the swarm stations favoured the proliferation of Pleurobrachia pileus and the unique factors were low temperature (18.9 – 20.9 °C), high salinity (~24 psu) and associated high biological production. The phenomenon of P. pileus swarm has not been reported earlier from the coastal waters of Sundarban, therefore, our incidental observation provides further insight to explore the study area.|
|ISSN:||0975-1033 (Online); 0379-5136 (Print)|
|Appears in Collections:||IJMS Vol.49(06) [June 2020]|
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