Rajaguru: Biology of Cynoglossus arel and C lida from Indian waters 



347 



>- 

 o 



z 



LU 



o 



LU 

 DC 



o 



CYNOGLOSSUS LIDA 



MARCH 



FEBRUARY 



30 



10 



J 



N: 58 (M) 

 N: 16 (F) 



JANUARY 



20 



15 



LU 



O 10 h 



LU 

 IE 

 Li. 



mCNjci(£>cooN.-*jT-comrua>tocnor^'<a'^cDuicM 

 ^ -.- T- T- ^ ^ T- T- T- ^ ^ ^ r- T~ c\j eg eg c\j c\j c\j cvj 



SIZE GROUPS (mm) 







MALE 

 FEMALE 



> 

 (J 



z 



LU 



o 



LU 

 (C 



i/)C\iaicDcooh^^T-comega)cocoor-^»?^cOLDeg 



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'-T-^»-^r-T-T-T-T-»-^T-^egr\jegcgc\jegeg 



SIZE GROUPS (mm) 



MAY 



tnojOicDnor-'^T-coLncMCDcDcoor^^jT-ooinoj 

 o>oO'-CMcnoT^mmtDr~^h~coCT)oo»-c\]OjrO"^ 



'-^'-^'-■■~»-'-'-»---'^'-'-C\JC>JCVJC\JCMCMCO 



SIZE GROUPS (mm) 



lj^CMC71CDCOOr--^'-OOir)C\JOHO(T>Or--'^»-aOl/lC\J 



a)OO^cNjno'^ir)LOUJr~-r-.cooioo»-c\j(Mco'^ 



'~T-T-^T-T-..-T-T-T-T-T-T-^C\JC\JC\JC\JCMC\J(M 



SIZE GROUPS (mm) 



APRIL 



Jj 



N: 34 (M) 

 N: 45 (F) 



15 



O 



z 



LU 



o 



LU 



cc 



N: 84 (M) 

 N; 51 (F) 



JUL 



inCMOitDcoot^ ■^'-coi/ic\jcncor)of^'<t'-coLnc\j 



»-'t-^»-^T-..-T-..-r-^^»-T-CMC\JCMC\JC\JC\JC\J 



SIZE GROUPS (mm) 



i/iegcnocnor^^T-oomc\jai(£)cnor^*^»-a)i/)eg 



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SIZE GROUPS (mm) 



Figure 8A 



Size-frequency histograms for 

 male (M) and female (F) Cynoglos- 

 sus lida (January-June) caught 

 commercially off Porto Novo, 

 India, October 1981-September 

 1982. 



year would be 196 mm. Further modes could not be 

 traced. 



In female C. lida (Fig. 8), the first mode was the 

 102-108 mm size-group in November. This was traced 

 to the 193-199mm size-group in June, 91mm growth 

 in 7 months. At this rate, a fish would be 156 mm in 

 the first year. The mode at the 151-157 mm size-group 

 in January was traced back to the 193- 199 mm size- 

 group in January, 42 mm growth in 12 months. A fish 



would be 198 mm at the end of the second year. The 

 mode at the 193- 199 mm size-group in May was traced 

 to the 207-213 mm size-group in December, 14 mm 

 growth in 7 months. At this rate, a fish at the end of 

 the third year would be 222 mm. 



The rate of growth from the time of hatching and 

 throughout the first year would be more rapid than that 

 of the older year-classes. 



