ISSN : 1225-3480
1994년 1월부터 1994년 12월까지 전라북도 군산시 하제 연안에 서식하는 개량조개의 성장을 조사하였다. 개량조개의 패각에 나타나는 윤문은 년 1 회 형성되며 주 윤문 형성시기는 8월에서 9월로 조사되었다. 초륜 형성기간은 15 개월 (1.25년)로 나타났다. 각장 (SL) 과 전중 (TW) 간의 관계는 TW = 2.2476 <TEX>$\times$</TEX> <TEX>$10^{-5}$</TEX> SL<TEX>$^{3.536}$</TEX> 이었으며, 각장 (SL) 과 각고 (SH) 간의 관계는 SH = 0.7545 SL - 0.0145 이고, 각장 (SL) 과 각폭 (SW) 간의 관계는 SW = 0.5336 SL - 2.4253 였다. 연령 (t) 에 대한 각장 (SL<TEX>$_{t}$</TEX> ) 과 전중(TW<TEX>$_{t}$</TEX> ) 의 Bertalanffy 성장식은 SL<TEX>$_{t}$</TEX> =60.02[1 - e<TEX>$^{-0.6458(t-0.3895)}$</TEX> ], 이고 Twt = 43.63[1 - e<TEX>$^{0.6458(t-0.3895)}$</TEX> ]<TEX>$^{3.536}$</TEX> 였다.
The relationship between shell length and ring radius in each ring group was expressed as a regression line. Therefore, there is a correspondence in each ring formation. Based on the monthly variation of the marginal index (Ml') of the shell, it is assumed that the ring of this species was formed once a year during the period of August to October, and the main period of the annual ring formation was August through September. The relationship between shell length (SL) and total weight (TW) was expressed by the equation TW = 2.2476 <TEX>$\times$</TEX> 10<TEX>$^{-5}$</TEX> SL<TEX>$^{3.536}$</TEX> (<TEX>$r^2$</TEX>= 0.90). Shell length (SL) and shell height (SH; mm) were highly correlated with the equation SH = 0.7545 SL - 0.0145 (<TEX>$r^2$</TEX>= 0.93). The shell length (SL)-shell width (SW) relation was expressed by the equation SW = 0.5336 SL- 2.4253 (<TEX>$r^2$</TEX>= 0.87). Growth curves for shell length and total weight fitted to the von Bertalanffy's equation were expressed as follows: SL<TEX>$_{t}$</TEX> =60.02[1 - e<TEX>$^{-0.6458(t-0.3895)}$</TEX> ], Twt = 43.63[1 - e<TEX>$^{0.6458(t-0.3895)}$</TEX> ]<TEX>$^{3.536}$</TEX> .
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