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Title: Zooplankton phototaxis in oceanic squid fishing grounds in the Arabian Sea
Authors: Sasikumar, Geetha
Ragesh, Nadakkal
Sajikumar, Kunjumony Kurichithara
Koya, K.P. Said
Durgekar, Raveendra Narayan
Joseph, Mathew
Alloycious, P.S.
Kripa, V.
Mohamed, K.S.
Keywords: Arabian Sea;Zooplankton;Phototaxis;Night-illumination;Ecology;Behaviour
Issue Date: Aug-2014
Publisher: NISCAIR-CSIR, India
Abstract: Effects of night-illumination on zooplankton abundance were compared with day/night variations in oceanic squid fishing grounds in central Arabian Sea. Zooplankton abundance showed significant variation in relation to three different light conditions with 52% of the total abundance happening during night and 25% during night with illumination. Siphonophores, chaetognaths, copepods and decapod larvae displayed negative phototaxis. Present results indicate that the response to light stimulus observed among the zooplankton groups were mostly due to the prey-seeking or predator avoidance behavior.
Page(s): 1528-1532
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.43(08) [August 2014]

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