On 6th June 2006, a large-sized stomatopod measuring 278 mm in total length was obtained from the trawl catches landed at Cuddalore Fisheries Harbour. It was identified as Lysiosquilla tredecimdentata belonging to the family Lysiosquillidae

Pillai, S Lakshmi

Thirumilu, P

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TECHNICAL AND EXTENSION SERIESCENTRAL MARINE FISHERIES RESEARCH INSTITUTECOCHIN, INDIA(INDIAN COUNCIL OF AGRICULTURAL RESEARCH)ISSN 0254-380 XMARINE  FISHERIESINFORMATION  SERVICENo. 189 July, August, September, 2006Mar. Fish. Infor. Serv., T&E Ser., No. 189, 2006 24Mola ramsayiposterior side truncated replacing caudal fininto a structure called 'clavus'. Out of 16 raysof clavus 12 bear ossicles forming its margin.This male speciemen measured 835 mm,weighing 10.5 kg., the stomach was almostempty, however few numbers of semi digestedpolychaete were found.Morphometric and internal organsmeasurements of M. ramsayi are given belowin mm.Total length : 835Standard length : 685Depth : 600Length from snout to gill racker : 250Length from snout to pectoral fin : 272Length from snout to dorsal fin : 545Length from snout to eye : 120Length from snout to anus : 555Eye diameter (Vertical) : 42Eye diameter (Horizonadal) : 42Mouth breadth : 35Length of dorsal fin : 435Dorsal fin base width : 180Length of anal fin : 400Anal fin base width : 160Length of pectoral fin : 125Pectoral fin base width : 53Dorsal to anal fin height : 1260Anus to anal fin : 50Intestine total length : 2560Liver weight : 330 gramsGonad weight : 850 gramsIntestine weight : 1500 gramsTotal weight : 10.5 kilogramsSex : MaleStomach content : EmptyPrepared by : Mohan, S., S. Selvanidhi, G.Srinivasan and P. Poovannan, MadrasResearch Centre of CMFRI, ChennaiOn 6-6-2006, a large-sized stomatopodmeasuring 278 mm in total length wasobtained from the trawl catches landed atCuddalore Fisheries Harbour. It was identifiedas Lysiosquilla tredecimdentata belongingto the family Lysiosquillidae. The specimenLarge-sized stomatopod Lysiosquilla tredecimdentatafrom north Tamil Nadu coast1191Mar. Fish. Infor. Serv., T&E Ser., No. 189, 2006 25Lysiosquilla tredecimdentatawas beautifully coloured with striking yellowbands, two bands on carapace and one eachon three exposed thoracic segments, sixabdominal segments and telson.Two species belonging to the familyLysiosquillidae are known to attain larger size.They are Lysiosquilla maculata attaining amaximum total length of 317 mm for male and300 mm for female and Lysiosquillatredecimdentata with a maximum total lengthof 275 mm for male and 246 mm for female.The present record of 278 mm for L.tredecimdentata appeared to be the largestfor female known so far.In fresh condition, both L. tredecimdentataand L. maculata look similar in havingcolourful bands over the body. However, theycan be differentiated by the shape of antennalscale, which is elongated in L. tredecimden-tata and oval in L. maculata.Reported by : S. Lakshmi Pillai and P.Thirumilu, Madras Research Centre ofCMFRI, ChennaiFour numbers of dolphins were landedon29.06.2006 and another one on 20.07.06along Chennai coast of Kasimedu FisheriesHarbour. The dolphin frequently enter thecoastal water for feeding or breeding andoften get entangled by gillnets and trawlnetset or operated for other resources.Reported by : S. Mohan, S. Rajapackiamand P. Poovannan, Madras Research Centreof CMFRI, ChennaiOn the landing of Humb-back and Bottle-nose dolphin atChennai Fisheries Harbour1192A male whale shark Rhincodon typus waslanded at Chennai Fisheries Harbour on07.07.2006, measuring 8.1 meter in lengthand weighing approximately 4 tonnes, caughtin mechanized gill net operated 25 kmnortheast of Chennai coast at a depth of 40A giant whale shark (Rhincodon typus) caughtat Chennai Fisheries Harbour1193

Large-sized stomatopod Lysiosquilla tredecimdentata from north Tamil Nadu coast

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Large-sized stomatopod Lysiosquilla tredecimdentata from north Tamil Nadu coast

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