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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.34, no.2, 2001³â, pp.98-105
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¾î¸° ¹é·Ã¾îÀÇ ¼ºÀå¿¡ ´ëÇÑ µ¿, ½Ä¹°ÇöûũſÀÇ ¸ÔÀ̱⿩µµ
( Dietary Contributions of Phytoplankton and Zooplankton to Young Silver Carps ) |
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| 2°³¿ùµÈ ¾î¸° ¹é¿¬¾îÀÇ ¼ºÀå¿¡ ÀÖ¾î¼ 7Á¾ÀÇ ¹è¾çÁ¶·ù¿Í µ¿¹°ÇöûũſÀÇ ¸ÔÀÌ ±â¿©µµ¸¦ Á¶»çÇϱâ À§ÇÏ¿© 10LÀÇ ¿øÅëÇü ¼öÁ¶¿¡ 8Àϵ¿¾È °¢°¢ ¹è¾çÇÏ¿´´Ù. µ¿¹°Çöûũſ Moina´Â ´ëºÎºÐÀÇ ¹è¾çÁ¶·ù¸¦ È¿°úÀûÀ¸·Î ¼·ÃëÇÏ¿´´Âµ¥, CryptomonasÀÇ °æ¿ì, 60ºÐµ¿¾È¿¡ °ÅÀÇ ´ëºÎºÐÀÇ Á¶·ù¸¦ Á¦°ÅÇÑ ¹Ý¸é ³²Á¶·ù Oscillatoria¿Í Microcystis´Â °ÇÏ°Ô Moina°³Ã¼±ºÀ» °¨¼Ò½ÃÄ×´Ù. ¾î¸° ¹é·Ã¾î´Â 52½Ã°£µ¿¾È¿¡ ¹è¾çÁ¶·ùÀÇ ¾à 50% Á¤µµ ¼·ÃëÇÏ¿´À¸³ª, ³²Á¶ MicrocystisÀÇ °æ¿ì 60% ÀÌ»óÀÌ ¿©ÀüÈ÷ ¼öÁ¶¿¡ ³²¾ÒÀ¸¸ç, µ¿½Ã¿¡ ¾î·ùüÁßÀÇ 5${sim}$12%¸¦ °¨¼Ò½ÃÄ×´Ù. ½ÇÇè¿¡ »ç¿ëµÈ µ¿ÀÏÇÑ ¹Ðµµ·Î °è¼ÓÀûÀ¸·Î ÅõÀÔÇÒ °æ¿ì, ¾î¸° ¹é·Ã¾î´Â 11${sim}$65Àϸ¸¿¡ »ç¸êÇÏ¿´´Ù. µ¿¹°Çöûũſ Moina´Â ÅõÀÔµÈ ¾î·ù¹Ðµµ¿¡ µû¶ó °¢ °³Ã¼ÀÇ ¼ºÀ寝¼ºÀÌ ´Ù¼Ò Â÷À̰¡ ÀÖÀ¸³ª ´ÜÀϹè¾çÁ¶·ùº¸´Ù ¾î·ù¼ºÀåÀ» À¯µµÇÏ´Â °¡Àå Á÷Á¢ÀûÀÎ ¿µ¾ç¿øÀ¸·Î »ç·áµÇ¾ú´Ù. |
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| Two-monthold silver carps were cultured with seven algal species and zooplankton (Moina macrocopa) in the laboratory. The carps were reared in 10 L translucent cylindrical aquaria with algae and zooplankton for 8 days. The Moina effectively fed almost cultured algae: perfectly removed Cryptomonas (NIES-282) within 60 min. Both algal diets Cryptomonas and Fragilaria (NIES-391) significantly increased the Moina population ($r^2$>0.93, p<0.005), while Microcystis (MIES-90) and Oscillatoria (NIES-204) reduced the zooplankton ($r^2$=0.97, p<001). Fish removed about 50% of all algae for 52 hrs, even 60% of Microcystis still remained: all algae reduced ca. 5${sim}$12% of initial weight. Furthermore, a continuous supply of algae with same density resulted in the death of fish, e.g. 11 days in cyanobacteria Microcystis. Therefore, the growth limitation of silver carp by algae indicates that zooplankton is of direct dietary contributor in planktivores feeding behavior. |
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| Ű¿öµå |
| Fish growth;Two-month old silver carp;Cultured algae;Moina macrocopa;Food quality; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.34, no.2, 2001³â, pp.98-105
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200118317177239)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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