Abstract

The blood clam Tegillarca (Anadara) rhombea is one of the important bivalves that show the presence of haemoglobin in its blood as against haemocyanin that is present in other bivalves. The haematological characteristics of this clam found along the south west coast of Maharashtra, India were studied from February 2014 to March 2015, excluding June-July 2015 due to heavy monsoon, in randomly selected specimens. The blood showed the presence of red blood corpuscles with round nucleus, white blood corpuscles with kidney bean shaped nucleus and non-nucleated platelets. The average count of RBCs was 1.76 X 109 per ml, WBCs 4.87 X 106 per ml. and platelets were 66 X 108 per µl. Haemoglobin (Hb) was found in the range of 2.03 to 8.87 gdL-1 and seen to be increasing with size. The general trend in the relationship between blood parameters and body size is that the bigger the animal, the higher the values of its haematological parameters.

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