Notes on the Egg Bearing Cyclopoid Copepod, Oithona similis Claus, 1866 of the Arabian Sea
Morphology of the marine egg bearing cyclopoid copepod Oithona similis occurring along the southwest coast of India [Vizhinjam (8°21'56"N; 76°59'39"E), Neendakara (8°57'29"N; 76°31'13"E), Cochin (9°56'16"N; 76°13'55"E) and Calicut (11°13'33"N; 75°46'30"E)] from January to December 2010 at different seasons (pre monsoon, monsoon and post monsoon) were studied. Detailed comparison of the structure of different appendages of O. similis with those already available for the species from Norway, Japan, China, Spain and Russia revealed minute differences in the armature of appendages, number and arrangement of spines, setae of swimming legs and anal laminae. The total length of the specimen collected from all the four stations in the study ranged from 615 to 650μ. The smallest specimens were obtained from Calicut.
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