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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.1, 2005³â, pp.83-94
¹Ð¾î (Rhinogobius brunneus)ÀÇ »ê¶õÇൿ ¹× Ãʱâ»ýȰ»ç
( Spawning Behavior and Early Life History of Korea Freshwater Goby (Rhinogobius brunneus) )
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º» ¿¬±¸´Â ¹Ð¾î (Rhinogobius brunneus)ÀÇ »ê¶õÇൿ ¹× Ãʱâ»ýȰ»ç¸¦ ¹àÈ÷±â À§ÇÏ¿© 4°¡Áö ¼ö¿ÂÁ¶°Ç ÇÏ¿¡¼­ ½ÇÇèÀ» ¼öÇàµÇ¾ú´Ù. º» ½ÇÇèÀ» À§ÇØ ¹Ð¾î´Â ±Ý°­ Áö·ùÁßÀÇ ÇϳªÀÎ °©Ãµ¿¡¼­ ¼º¼÷µÈ ¼öÄÆ°ú ¾ÏÄÆÀ» äÁýÇÏ¿´À¸¸ç, ÀÏÁ¤±â°£ÀÇ ¼øÄ¡°úÁ¤À» °ÅÄ£ ÈÄ¿¡ ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. º» ½ÇÇè °á°ú¿¡ µû¸£¸é, ¼º¼÷µÈ ¼º¾îµéÀÇ ±¸¾ÖÇൿ ¹× »ê¶õÇൿÀÇ À¯ÇüÀº ´ÙÀ½°ú °°ÀÌ ¿ä¾àµÈ´Ù. ¹Ð¾îÀÇ ¼º¼÷µÈ ¼öÄÆÀº »ê¶õ¿¡ ¾Õ¼­ ¼¼·Â±ÇÀ» Çü¼ºÇÑ ÈÄ ÀÚ½ÅÀÇ ¼¼·Â±Ç ¾È¿¡ »ê¶õÀ» À§ÇÑ µÕÁö¸¦ Çü¼ºÇÑ ÈÄ, ¼º¼÷µÈ ¾ÏÄÆÀ» À¯ÀÎÇÏ¿© µÕÁö¿¡ ÇϺο¡ Ÿ¿øÇü ³­À» ´ÜÃþÀ¸·Î ºÙÀÌ´Â ºÎÂø³­ Á¾À¸·Î ÆÄ¾ÇµÇ¾ú´Ù. ¼öÁ¤µÈ ¾ËµéÀº ¼öÄÆ¿¡ ÀÇÇØ º¸È£¹Þ´Â Á¾(Parental care species)ÀÓ ÀÌ °üÂûµÇ¾úÀ¸¸ç, ¼öÁ¤³­ÀÇ Æò±Õ Àå°æÀº 1.5${pm}$0.1 mm, ´Ü°æÀº 0.7${pm}$0.1 mm¿´´Ù. ½ÇÇè½Ç³» 4°³ÀÇ ¼ö¿Â󸮱º¿¡ µû¸£¸é, °í¿Â󸮱º º¸´Ù´Â Àú¿Â 󸮱º¿¡¼­ ºÎÈ­±îÁö ´õ ±ä ½Ã°£ÀÌ ¼Ò¿äµÇ¾úÀ¸¸ç, ³ôÀº ¼ö¿ÂÀϼö·Ï ºÎÈ­±îÁö ¼Ò¿äµÇ´Â ½Ã°£ÀÌ ´ÜÃàµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, $18^{circ}C$ÀÇ ³·Àº ½ÇÇè¼ö¿Â¿¡¼­ ºÎÈ­µÈ ÀÚ¾î´Â ¾à 3.6 mmÀÇ ÀüÀåÀ», $25^{circ}C$ ÀÌ»óÀÇ ³ôÀº ½ÇÇè¼ö¿Â¿¡¼­ ºÎÈ­µÈ ÀÚ¾î´Â 3.1${sim}$3.2 mmÀÇ ÀüÀåÀ» º¸¿´´Ù. ¶ÇÇÑ, 󸮱º¿¡¼­ ¼ö¿ÂÀÌ ³ôÀ»¼ö·Ï ºü¸¥ ¼ºÀåÀ» º¸¿© ºÎÈ­±îÁö ¼Ò¿äµÇ´Â ½Ã°£ÀÌ ´ÜÃàµÇ´Â °á°ú¸¦ º¸¿´À¸³ª, ºÎÈ­ ½Ã ÀÚ¾îÀÇ Å©±â´Â ³ôÀº ¼ö¿Â »óÅ¿¡¼­ º¸´Ù´Â ³·Àº ¼ö¿Â»óÅ¿¡ ¼­ ºÎÈ­µÈ °³Ã¼°¡ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º» ¹Ð¾î¿¡ ´ëÇÑ ¹ß»ý»ýÅÂÇÐÀû ±âÃÊ¿¬±¸´Â ¼öÁú¿À¿° ¹× ¼­½ÄÁö ÆÄ±«¿¡ ÀÇÇØ ¾îÁ¾ÀÇ ´Ù¾ç¼ºÀÌ ºü¸£°Ô °¨¼ÒÇÏ´Â »óȲ¿¡¼­ ¾î·ù °³Ã¼±º º¸È£ ¹× »ýŰ躸ȣ¿¡ ±âÃÊÀڷḦ Á¦°øÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù.À¸¸ç Áø´Ü°ú µ¿½Ã¿¡ Ưº°ÇÑ ºÎÀûÀÀÁõÀÌ ¾ø´Â ÇÑ ¼ö¼ú·Î½á ±ÙÄ¡°¡ °¡´ÉÇϱ⠶§¹®¿¡ Á¤È®ÇÑ Áø´Ü°ú ÇÔ²² º¸´Ù ¿Ïº®ÇÑ ÀýÁ¦°¡ ¿ä±¸µÈ´Ù. ¾ÊÀº ±¹³» Çö½ÇÀ» °¨¾ÈÇÒ ¶§ º» ¿¬±¸¿¡¼­ ºÐ¸®µÈ ±ÕÁÖµéÀº ÇâÈÄ Ç×»ýÁ¦ ³»¼º±Õ ÀüÆÄ °æ·Î¸¦ ÃßÀûÇÏ´Â ÁÁÀº ¿¬±¸ ÀÚ·á°¡ µÉ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù.´Ù.Á¡ÀÌ ÀÖÁö¸¸ °æ»óºÐÁöÀÇ ¹é¾Ç±â ºÒ±¹»çÈ­°­¾Ï·ù¿¡´Â Á¤¼ºÀûÀ¸·Î À¯È¿ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¿ì¸®´Â ÃÖÁ¾ÀûÀ¸·Î °æ»óºÐÁö³» ¹é¾Ç±â È­°­¾Ï·ù´Â õºÎ°üÀÔ ¾ÏüÀÌ°í ³ëÃâµÈ È­°­¾Ï·ù°¡ õºÎÁö°¢À̶ó´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. °ÍÀÌ ¾Æ´Ï¶ó ³«°üÀû ¿¹ÃøÀ» ¼öÇàÇÏ´Â °æÇâÀÌ ÀÖÀ½À» ¹ß°ßÇÒ ¼ö ÀÖ¾ú´Ù.¿ø¹ç, È­»êȸ¹çÀ¸·Î 6°³ À¯ÇüÀ¸·Î ºÐ·ùÇÒ °æ¿ì °¢°¢ÀÇ ºÐÆ÷¸éÀûÀº 41.9%, 23.3%, 17.5%, 13.9%, 1.1. 2.2% À̾ú´Ù. µµ½ÃÈ­ ¹× µµ·ÎÈ®´ë µî ´Ù¾çÇÑ ÅäÁöÀÌ¿ë ¹× ÁöÇü°³º¯À¸·Î °ú°ÅÀÇ Åä¾çÁ¤º¸°¡ ¸¹ÀÌ º¯°æµÇ¾ú´Ù. ±×·¡¼­, ¾ÕÀ¸·Î´Â ÀΰøÀ§¼ºÀÚ·á ¹× Ç×°ø»çÁøÀ» ÀÌ¿ëÇÏ¿© ºü¸£°í ½±°Ô Ȱ¿ëÇÒ ¼ö ÀÖ´Â Åä¾çÁ¶»ç ¹æ¹ý°³¹ß°ú ±â ±¸ÃàµÈ Åä¾çµµÀÇ ¼öÁ¤, º¸¿Ï ÀÛ¾÷ÀÌ ÇÊ¿äÇÑ Àý½ÇÈ÷ ¿ä±¸µÇ°í ÀÖ´Â Çö½ÇÀÌ´Ù.ºê·Î Ãâ½Ã¿¡ µû¸¥ ¸¶ÄÉÆÃ ¹× °í°´°ü¸®¿Í °ü·ÃµÈ ½Ã»çÁ¡À» ³íÀÇÇÑ´Ù.´Â ±³Çո鿡¼­ 2, 3, 4±ºÀÌ 1±º¿¡ ºñÇØ º¯¿¬ÀûÇÕµµ°¡ ³ô¾ÒÀ¸¸ç (p < 0.05), ÀÎÁ¢¸é°ú Ä¡Àº¸é¿¡¼­´Â ±º°£ À¯ÀÇÂ÷¸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù À̹ø ¿¬±¸¸¦ ÅëÇÏ¿© º¹ÇÕ·¹ÁøÀ» °£ÇæÀû ±¤ÁßÇÕ½ÃÅ´À¸·Î½á º¯¿¬ÀûÇÕµµ°¡ Çâ»óµÉ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.½ÃÀå¿¡ ºñÇØ ÁÖ°¡°¡ ºñ±³Àû ¾ÈÁ¤ÀûÀÎ ¼öÁØÀ» À¯ÁöÇØ ¿Ô´Ù°í º¼ ¼ö ÀÖ´Ù.36.4%)¿Í ¿Ü½ÄÀ» ¼±È£(29.1%)${lrcorner}$ Çϱ⠶§¹®¿¡ ÆÐ½ºÆ®Çªµå¸¦ ÀÌ¿ëÇÏ°Ô µÈ °ÍÀ¸·Î ÀÀ´ä ÇÏ¿´À¸¸ç, ³² ¿© ´ëÇлý°£¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ(p<0.05)°¡ ÀÎÁ¤µÇ¾ú´Ù. ÀÀ´äÀÚÀÇ Ã¼ÇüÀº ${ulcorner}$Àû´çÇÏ´Ù${lrcorner}$°í ÀÀ´äÇÑ °æ¿ì°¡ °¡Àå ¸¹
The objective of the study was to elucidate early life history of Rhinogobius brunneus, based on laboratory observations and field works, along with its courtship and spawning behaviors. The male and female fish matured were sampled for the lab experiments from Gap-Stream, which is one of the tributaries of Geum-River, Korea. The spawning behaviors and courtship of matured adults had a typical pattern; matured males of Rhinogobius brunneus built up spawning nests and had their own territory before the spawning, and the behavior then triggered the egg spawning of female with active courtship. The females attached elliptic egg mass as a single layer, on the stones below the spawning nest. After the spawning, the egg mass was guarded by males only until the hatching. The size of egg fertilized, measured by microscope was about 1.5${pm}$0.1mm in length and 0.7${pm}$0.1 mm in the egg's width. According to the lab experiments conducted under four temperature regime, the lapsed time for the hatching was shortened as temperatures increased in the treatments. On the contrary to the hatching time, the average length of newly hatched larvae showed a reverse relation with water temperature. The larvae, considered a final stage of the early life history was about 3.6 mm in total length for water temperature of $18^{circ}C$, whereas they were between 3.1 mm and 3.2 mm for over $25^{circ}C$. This indicates that higher water temperature may decrease the growth rate in the early life history. These results may provide valuable information for the population conservation and ecosystem protection under accelerated water pollution and habitat degradations in Korea.
 
Ű¿öµå
early life history;Rhinogobius brunneus;spawning behavior;territory;fish ecology;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.1, 2005³â, pp.83-94
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317183988)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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