|
|
|
Çѱ¹ÇÏõȣ¼öÇÐȸ / v.38, no.1, 2005³â, pp.73-82
|
Çѱ¹»ê ±ä¸ô°³ (Squalidus gracilis majime, Cyprinidae)ÀÇ ³¹ß»ý
( The Egg Development of Korean Slender Gudgeon, Squalidus gracilis majimae (Cypriniforms: Cyprinidae) ) |
| ¹Ú°æ¼;È«¿µÇ¥;¹®¿î±â;Ãֽż®;¾È±¤±¹; ¹Ì½Ã°Ç´ëÇб³ ÀÚ¿¬ÀÚ¿ø ¹× ȯ°æÇкÎ;±¹¸³Áß¾Ó°úÇаü ÀÚ¿¬»ç¿¬±¸½Ç;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;Ãæ³²´ëÇб³ »ý¸í°úÇкÎ;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| Çѱ¹»ê ±ä¸ô°³ (Squalidus gracilis majimae)ÀÇ ³¹ß»ý °úÁ¤À» ¿¬±¸Çϱâ À§ÇÏ¿©, ±ä¸ô°³ÀÇ Ä£¾î¿Í »ýÅÂÀû Á¶»ç´Â ÃæÃ»³²µµ º¸·É½Ã¿¡ À§Ä¡ÇÑ º¸·É´ï°ú ¿õõõ¿¡¼ ½Ç½ÃÇÏ¿´´Ù. ÀÚ¿¬ »ê¶õ¿¡ ÀÇÇØ ¼öÁ¤µÈ ³°ú ¹è ¹ß»ýÀÇ ÇüÅÂÇÐÀû ¼³¸íÀº ´ÙÀ½°ú °°ÀÌ¿ä¾àµÈ´Ù. ¼öÁ¤¶õÀÇ ÇüÅ´ µÕ±Û°í, Á¡Âø¼ºÀÌ ÀÖÀ¸¸ç Åõ¸íÇÏ¿´°í, ¼öÁ¤¶õÀÇ Æò±ÕÁ÷°æÀº 2.9${pm}$0.3 mm (n = 30)¿´°í, À¯±¸°¡ Á¸ÀçÇÏÁö ¾Ê¾ÒÀ¸¸ç, ¼öÁ¤¶õÀÇ ¹ß»ýÀº ¼ö¿Â $26{pm}1.5^{circ}C$¿¡¼ °üÂûµÇ¾ú´Ù. ¼öÁ¤ ÈÄ 20ºÐ¿¡ ¹è¹ÝÀÌ Çü¼ºµÇ¾úÀ¸¸ç, 48ºÐ µÚ 2¼¼Æ÷·Î ³ª´µ¾îÁ³°í, Æ÷¹è±â´Â ¼öÁ¤ ÈÄ 5½Ã°£ 40ºÐ¿¡ ³ªÅ¸³µÀ¸¸ç, ³¶¹è±â´Â ¼öÁ¤ ÈÄ 6½Ã°£ 55ºÐ¿¡ °üÂûµÇ¾ú´Ù. ¹èüÀÇ Çü¼ºÀº ¼öÁ¤ ÈÄ 12½Ã°£ 58ºÐºÎÅÍ ½ÃÀ۵Ǿú°í, ¾ÈÆ÷¿Í 9°³ÀÇ Ã¼ÀýÀÌ ¼öÁ¤ÈÄ 17½Ã°£ 05ºÐ¿¡ ¹ß°ßµÇ¾ú´Ù. ¼öÁ¤ ÈÄ 23½Ã°£ 30ºÐ¿¡ ÀÌÆ÷°¡ »ý°åÀ¸¸ç, 25${pm}$26°³ÀÇ Ã¼Àý°ú ÇÔ²² ¾ÈÆ÷¾ÈÀÇ ·»Áî°¡ ¼öÁ¤ ÈÄ 32½Ã°£ 35ºÐ¿¡ ¹ß°ßµÇ¾ú´Ù. ¼öÁ¤ ÈÄ 37½Ã°£ 27ºÐ¿¡ ³úÀÇ ºÐÈ¿Í ÇÔ²² ¹èü°¡ ²ÞƲ°Å¸®±â ½ÃÀÛÇßÀ¸¸ç, ½ÉÀå¹Úµ¿°ú ¾ÈÆ÷³»ÀÇ Èæ»ö¼ÒÆ÷°¡ ¼öÁ¤ ÈÄ 44½Ã°£ 46ºÐ¿¡ ¹ß°ßµÇ¾ú´Ù. ¼öÁ¤ ÈÄ 50½Ã°£ 36ºÐ °¡½¿Áö´À·¯¹ÌÀÇ Çü¼º°ú ÇÔ²² ¸ö ºÎºÐÀÇ Èæ»ö¼ÒÆ÷°¡ Çü¼ºµÇ´Â °ÍÀ» ³¡À¸·ÎÇÏ¿© ¼öÁ¤ ÈÄ 57½Ã°£ 49ºÐ¿¡ ¼öÁ¤¶õÀº ºÎȵǾú´Ù. À̶§ °« ºÎÈµÈ ÀÚ¾î´Â ÀüÀåÀÌ 3.3${pm}$0.2 mm(n = 120)À̾ú´Ù. º» ¿¬±¸ °á°ú´Â ÃÖ±Ù ¼öÁú¿À¿° ¹× Á¾ ´Ù¾ç¼º °¨¼Ò°¡ ½Ã±ÞÇÑ »óȲ¿¡¼ Á¾ ¹× °³Ã¼±º º¸Á¸¿¡ ±â¿©ÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù. |
|
| This study was conducted, based on the field survey and laboratory observations, to elucidate egg developmental processes and their characteristics of the Korean slender gudgeon, Squalidus gracilis majimae. For the experiments, the mature adults were collected at the Woongcheon-Cheon Stream and Boreung Reservoir located in Boreung City, Chungnam Province and eggs were obtained from the natural spawning area. Morphological characteristics of the egg and embryonic development were summarized as follows: The shape of the fertilized egg was spherical, adhesive and transparent. The fertilized egg was 2.9${pm}$0.3 mm (n = 30) in mean diameter under water temperature of $26{pm}1.5^{circ}C$, light white in color and had no oil droplets. After 20 minutes from the time of fertilization, a blastodisc was formed and divided into two cells at 48 minutes after fertilization. The blastular stage occurred at 5 hours 40 minutes after fertilization and the gastrular stage was detected at 8 hours 41 minutes after fertilization. The beginning of embryo formation was observed at 12 hours 58 minutes after fertilization and optic vesicles and 9 somites were discovered at 17 hours 05 minutes after fertilization. Differentiation of brains and embryo wiggling were observed at 37 hours 27 minutes after fertilization. Heart beating and the formation of melanophores in optic vesicles were detected at 44 hours 46 minutes after fertilization. The formation of pectoral fins and melanophores in the body were discovered at 50 hours 36 minutes after fertilization. Hatching occurred at 57 hours 49 minutes after fertilization. The newly hatched larvae were 3.3${pm}$0.2 mm (n = 120) in total length. We believe that these results may contribute the species and population conservations under the situation of accelerated water pollution and the decreases of its diversity. |
| |
| Ű¿öµå |
| Korean slender gudgeon;Squalidus gracilis majimae;egg development; |
| |
|
|
 |
|
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.38, no.1, 2005³â, pp.73-82
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200518317183982)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|