FOOD SCIENCE & TECHNOLOGY | RESEARCH ARTICLE Determination of the biometrical parameters, biochemical composition and essential trace metals of edible sea urchin (Stomopneustes variolaris) in

Sea urchin samples (Stomopneustes variolaris) were collected from the selected (three sampling locations) western and southern coastal area around the Sri Lanka (n = 193) from the time period of May to October, 2014. Sampled animals were measured for biometrical parameters, dissected and separated roe tissues, which were analysed for the proximate composition, fatty acid profiles (by GC), es- sential trace elements (by AAS), carotenoid profile and vitamin A, B1, B2, B12, C and E (By HPLC). Gonads of S. variolaris were rich in protein (11.47-18.81%), essential fatty acids (C14:0, C16:0 and C18:1 (n-9) were predominant and C12:0, C22:5 (n-6) and C22:6 (n-3) were lowest), fatty acids profiles, which revealed the higher amount of saturated fatty acids was present in the gonads of S. variolaris than the mono- unsaturated fatty acids and polyunsaturated fatty acids. Carotenoids (β carotene (9.4 mg/100 g)) and vitamin (higher amount of vitamin C (20 mg/100 g) was also rich with S. variolaris gonads. The essential trace elements like Fe, Zn and Cu also in recorded in considerable level of S. variolaris gonads. Beruwala population was recorded higher average test diameter (6.70 cm) than the other two sites and Mt. Lavinia population was showed highest GSI (5.95) value.

[1]  P. Silcock,et al.  Determination of the similarity between gonads recovered from single sea urchins (Evechinus chloroticus) compared to the similarity of gonads recovered from different urchins , 2012 .

[2]  M. Chouaibi,et al.  The Influence of Season on the Gonad Index and Biochemical Composition of the Sea Urchin Paracentrotus lividus from the Golf of Tunis , 2012, TheScientificWorldJournal.

[3]  E. Cook,et al.  The transformation of long chain polyunsaturated fatty acids in benthic food webs: The role of sea urchins , 2011 .

[4]  R. D'adamo,et al.  Gametes and embryos of sea urchins (Paracentrotus lividus, Lmk., 1816) reared in confined conditions: their use in toxicity bioassays , 2011 .

[5]  S. Siikavuopio.  Green sea urchin (Strongylocentrotus droebachiensis,Müller) in aquaculture: the effects of environmental factors on gonad growth. , 2009 .

[6]  P. Dubois,et al.  Assessment of seawater pollution by heavy metals in the neighbourhood of Algiers: Use of the sea urchin, Paracentrotus lividus, as a bioindicator , 2008 .

[7]  M. Jangoux,et al.  Reproductive Cycle of Edible Echinoderms from the Southwestern Indian Ocean I. Tripneustes gratilla L. (Echinoidea, Echinodermatata) , 2007 .

[8]  T. Dinçer,et al.  Chemical Composition and Biometrical Measurements of the Turkish Sea Urchin (Paracentrotus Lividus, Lamarck, 1816) , 2007, Critical reviews in food science and nutrition.

[9]  M. Shpigel,et al.  The effect of photoperiod and temperature on the reproduction of European sea urchin Paracentrotus lividus , 2004 .

[10]  J. López-Hernández,et al.  Protein, amino acid and fatty acid contents in raw and canned sea urchin (Paracentrotus lividus) harvested in Galicia (NW Spain) , 2000 .

[11]  K. Collins,et al.  Heavy Metal Concentrations in Sea Urchin Tissues From Egypt, Ireland and United Kingdom , 1995 .

[12]  A. C. Giese,et al.  REPRODUCTIVE AND BIOCHEMICAL STUDIES ON A SEA URCHIN, STOMOPNEUSTES VARIOLARIS, FROM MADRAS HARBOR. , 1964, Comparative biochemistry and physiology.

[13]  D. James.  Indian Echinoderms their resources biodiversity zoogeography and conservation , 2008 .

[14]  V. Matranga,et al.  The sea urchin : from basic biology to aquaculture , 2002 .

[15]  R. Scheibling,et al.  The Decline of the Sea-Urchin, Tripneustes-Ventricosus, Fishery of Barbados - a Survey ofFishermen and Consumers , 1987 .

[16]  D. James.  Ecology of intertidal echinoderms of the Indian Seas , 1982 .