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Çѱ¹È¯°æ»ýÅÂÇÐȸ / v.25, no.3, 2011³â, pp.318-326
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( Estimation on Population Ecological Characteristics of Crucian Carp, Carassius auratus in the Mid-Upper System of the Seomjin River ) |
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¼¶Áø° Áß »ó·ù ¼ö°è¿¡¼ ºØ¾îÀÇ ÀÚ¿ø·® ¹× ÀÚ¿ø°ü¸®ÀÇ ±âÃÊ·Î »ç¿ëµÇ´Â ºØ¾îÀÇ °³Ã¼±º »ýÅÂÇÐÀû Ư¼ºÄ¡¸¦ ÃßÁ¤ÇϰíÀÚ ÇÏ¿´´Ù. äÁýµÈ ºØ¾îÀÇ ÀüÀåÀº 95-288mmÀÇ ¹üÀ§¸¦ º¸¿´À¸¸ç, ¿¬·ÉÀº ºñ´ÃÀÇ À±¹®À» ÅëÇØ °áÁ¤ÇÏ¿´´Ù. ¿¬·ÉÇüÁú·Î¼ ºñ´ÃÀº À±¹®ÀÌ ¶Ñ·ÇÇÏ°Ô ±¸ºÐµÇ¾úÀ¸¸ç, À̸¦ ÅëÇØ È®ÀÎµÈ ÃÖ°í ¿¬·É¾î´Â 5¼¼·Î ³ªÅ¸³µ´Ù. Àüü Ç¥º»¿¡¼ 2¼¼ ¿¬·É¾î°¡ °¡Àå ¸¹Àº ¾çÀ» Â÷ÁöÇÏ¿´À¸¸ç(n=38), ´ÙÀ½À¸·Î´Â 3¼¼ ¿¬·É¾î°¡ dzºÎÇÏ¿´´Ù(n=22). ¿¬º¯¼öÁö¼ö ºÐ¼®À» ÅëÇØ ¸Å³â ´ÜÀÏ À±¹®ÀÌ Çü¼ºµÊÀÌ È®ÀεǾú´Ù. üÀå°ú üÁß °£ÀÇ °ü°è½ÄÀº BW = $0.0038BL^{3.73}$($R^2$=0.96) (p<0.01)·Î ÃßÁ¤µÇ¾ú°í, Àΰæ°ú üÀå °£ÀÇ °ü°è½ÄÀº BL = 2.362R+2.76($R^2$=0.89)·Î ³ªÅ¸³µ´Ù. ºñ¼±Çü ȸ±ÍºÐ¼®À» ÅëÇØ ÃßÁ¤µÈ von Bertalanffy ¼ºÀå ÆÄ¶ó¹ÌÅ͵éÀº ÀÌ·ÐÀû ÃÖ´ëüÀå 33.2cmÀ̾úÀ¸¸ç, ÀÌ·ÐÀû ÃÖ´ëüÁß 1,798.4g, ¼ºÀå°è¼ö 0.20³â$^{-1}$, üÀåÀÌ 0ÀÏ ¶§ÀÇ ¿¬·É -0.51³â µîÀ¸·Î ÃßÁ¤µÇ¾ú´Ù. von Bertalanffy¿¡ ÀÇÇÑ ºØ¾îÀÇ ¼ºÀå½ÄÀº $L_t$ = 33.23($1-e-^{0.20(t+0.51)}$)($R^2$=0.98)·Î È®ÀεǾú´Ù. ¿¬°£ »ýÁ¸À²Àº 0.427³â$^{-1}$·Î, ¼ø°£ÀÚ¿¬»ç¸Á°è¼ö´Â 0.784³â$^{-1}$·Î ÃßÁ¤µÇ¾úÀ¸¸ç, ¼ø°£¾îȹ»ç¸Á°è¼ö´Â 0.067³â$^{-1}$·Î »êÃâµÇ¾ú´Ù. »ýÁ¸À²·ÎºÎÅÍ ÃßÁ¤µÈ ¼ø°£Àü»ç¸Á°è¼ö´Â 0.851³â$^{-1}$·Î ÃßÁ¤µÇ¾ú´Ù. |
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The population ecological characteristics of the Crucian carp, Carassius auratus, were determined in order to estimate stock of the mid-upper system of the Seomjin River. The fish ranged in size from 95 to 288mm total length. The age was determined by counting the scale annulus. The scales displayed clear annulus that were used to estimate the age. The oldest fish observed in this study was 5 years old. Age-2 fishes were the most numerous in the sample(n=38), followed in frequency be age-3(n=22). Marginal index analysis validated the formation of a single annulus per year. The relationship between body length and body weight was BW = $0.0038BL^{3.73}$($R^2$=0.96) (p<0.01). The relationship between the scale radius and body length was BL = 2.362R+2.76($R^2$=0.89). The von Bertalanffy growth parameters estimated from a non-linear regression method were $L_{infty}$=33.2 cm, $W_{infty}$=1,798.4 g, $K=0.20year^{-1}$ and $t_0$=-0.51year. Therefore, Growth in length of the fish was expressed by the von Bertalanffy's growth equation as $L_t=33.23$($1-e^{-0.20(t+0.51)}$)($R^2$=0.98). The annual survival rate was estimated to be 0.427year$^{-1}$. The instantaneous coefficient of natural mortality of estimated from the Zhang and Megrey method was $0.784year^{-1}$, and instantaneous coefficient of fishing mortality was calculated $0.067year^{-1}$. From the estimates of survival rate, the instantaneous coefficient of total mortality was estimated to be $0.851year^{-1}$. |
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Ű¿öµå |
ºñ´Ã À±¹®;¿¬º¯¼öÁö¼ö;von Bertalanffy ¼ºÀå½Ä;¿¬°£ »ýÁ¸À²;SCALE ANNULUS;MARGINAL INDEX;VON BERTALANFFY GROWTH EQUATION;ANNUAL SURVIVAL RATE; |
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Çѱ¹È¯°æ»ýÅÂÇÐȸÁö / v.25, no.3, 2011³â, pp.318-326
Çѱ¹È¯°æ»ýÅÂÇÐȸ
ISSN : 1229-3857
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201125247229438)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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