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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.34, no.4, 2001³â, pp.292-297
ÀÛÀº ¿¬¸ø¿¡¼­ ³ìÁ¶·ù Dictyosphaerium pulchellumÀÇ ´ë¹ß»ý
( Occurrence of Dictyosphaerium pulchellum (Chlorophyceae) Bloom in a Small Pond )
±èÁØÅÂ;ºÎ¼º¹Î; Ãæ³²´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¹°Çаú;Ãæ³²´ëÇб³ ÀÚ¿¬°úÇдëÇÐ »ý¹°Çаú;
 
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Ãæ³² È«¼ºÀÇ ÀÛÀº ¿¬¸ø¿¡¼­ ¼öÇàµÇ°í ÀÖ´Â ½Ä¹°Çöûũſ ¿¬ÁÖ±âÀÇ ¸ðµ¨¸µ ¿¬±¸ °úÁ¤¿¡¼­ ³ìÁ¶·ù Dictyosphaerium pulchellumÀÇ ´ë¹ß»ý °úÁ¤À» 2000³â t¿ùºÎÅÍ 2001³â 1¿ù±îÁö ÃßÀûÇÏ¿´´Ù. D. pulchellumÀº ¿¬Áß µå¹°°Ô ÃâÇöÇÏ¿´À¸³ª, ¹Ðµµ´Â 3¿ù 12ÀϺÎÅÍ Áõ°¡Çϱ⠽ÃÀÛÇÏ¿©, 4¿ù 2ÀÏ¿¡´Â $59,200;co1ony;mL^{-1}$·Î ´ë¹ß»ýÇÏ¿´°í, 4¿ù 16¿¡ ±Þ°¨ÇÏ¿´´Ù. ±ºÃ¼´Â º¸Åë 8¼¼Æ÷¿Í 16¼¼Æ÷·Î ÀÌ·ç¾îÁ³À¸³ª, ´ë¹ß»ýÀÌ ÁøÇàµÉ¼ö·Ï 32¼¼Æ÷¿Í 64¼¼Æ÷ ±ºÃ¼µé·Î ´ëÄ¡µÇ¾ú°í, ´ë¹ß»ý Èı⿡´Â ´ëºÎºÐÀÇ ±ºÃ¼°¡ 64¼¼Æ÷¿´´Ù. D. pulchellum¼¼Æ÷µéÀº ´ë¹ß»ýÀÇ Ãʱ⿡´Â °Ç°­ÇÏ¿´À¸³ª,3¿ù 19ÀϺÎÅÍ ±â»ý»ý¹°¿¡ °¨¿°µÇ¾î ÀÖ´Â ±ºÃ¼µéÀÌ ³ªÅ¸³µÀ¸¸ç,4¿ù 9ÀÏ¿¡´Â ´ëºÎºÐÀÇ ±ºÃ¼µéÀÌ ±â»ý»ý¹°·Î °¨¿°µÇ¾ú´Ù. ±â»ý»ý¹°·Î °¨¿°µÈ ¼¼Æ÷µéÀº ¿±·Ïü°¡ ÆÄ±«µÇ¾ú°í, ÇÇ·¹³ëÀ̵嵵 ¹ß´ÞµÇÁö ¾Ê¾Ò´Ù. ÇöÀç ÁøÇàµÇ°í ÀÖ´Â D. pulchellumÀÇ °³Ã¼±º°ú ȯ°æ¿äÀÎ, °æÀï ¹× ±â»ý»ý¹°°úÀÇ °ü°è¿¡ ´ëÇÑ ¿¬±¸´Â D. pulchellumÀÇ ´ë¹ß»ý °úÁ¤¿¡ °üÇÑ »õ·Î¿î Á¤º¸¸¦ Á¦°øÇÒ °ÍÀÌ´Ù.
As a part of study on the microalgal dynamics in a small pond in Hongsung, Chungnam, we found a massive bloom of chlorococcalean green alga, Dictyosphaerium pulchellum during the year-round survey from January 2000 to January 2001. D. pulchellum occurred at a low frequency throughout the year. However, D. pulchellum began to increase from 12 March, showed a peak of blooming with 59,200 colonies $mL^{-1}$ in 2 April, and abruptly decreased in 16 April. Colonies were 8-celled and 16-celled at early stage of blooming, 32-celled or 64-celled at the midst of blooming, and most of colonies consisted of 64 cells at the end of blooming. Colonies of D. pulchellum were healthy at the early stage of blooming, but most of colonies were infected with some parasites at the end of blooming. The infected cells bleached out with decomposing chloroplast and pyrenoids. The infection with parasites, together with irradiance and nutrient limitations, appears to stop D. pulchllum bloom. This is the first report on the occurrence of blooming of a green algal genus Dictyosphaerium and its infection with parasite in Korea.
 
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Blooming;Dictyosphaerium pulchellum;green algae;parasites;pond;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.34, no.4, 2001³â, pp.292-297
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200118317178690)
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