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Characteristics of Sexual Maturation in the Seaweed Porphyra pseudolinearis from East Sea, Korea

동해안 긴잎돌김(Porphyra pseudolinearis)의 성성숙기 특성

  • Kim, Young-Dae (Aquaculture Division, East Sea Regional Fisheries Research Institute) ;
  • Kim, Hyung-Geun (Faculty of Marine Bioscience & Technology, Kangnung National University) ;
  • Lee, Ju (Aquaculture Division, East Sea Regional Fisheries Research Institute) ;
  • Hong, Yong-Ki (Department of Biotechnology, Pukyong National University)
  • 김영대 (국립수산과학원 동해수산연구소 증식과) ;
  • 김형근 (강릉대학교 해양생명공학부) ;
  • 이주 (국립수산과학원 동해수산연구소 증식과) ;
  • 홍용기 (부경대학교 생물공학과)
  • Published : 2003.06.01

Abstract

The seaweed Porphyra pseudolinearis as a dominant species grows at upper of the intertidal zone of the East Sea from October to March. Vegetative cells have not matured during October when observed with naked eye and microscope. In the middle of November, although it didn't distingush between female and male gametophytes by eye, it showed antheridium and carpogonium when observed vertical section under microscope. From early December, It could be distinguished female and male gametophytes clearly. From Feburary it showed shorted length of thalli by release of spermatangia and carposporangia as maturation. At early March, the colar has been decaeded and side of thalli has been melted, completed of release of spermatia. At the end of December, the average length and width of female thalli were 149.9$\pm$5.6mm and 22.2$\pm$2.3mm, respectively. The length and width of male thalli were 149.9$\pm$9.4mm and 20.7$\pm$1.8mm. At the end of January, the average length and width of female thalli were 94.6$\pm$6.4mm and 29.1mm$\pm$5.1, respcetively. The length and width of male thalli were 107.8$\pm$7.3mm and 25.9$\pm$0.9mm. From this period lengths of female and male thalli have already been shortned by the release of spermatia and carpogonia.

동해안에 있어 긴잎돌김은 우점종으로 조간대 상부지역에 서식하며 10월에 발생하여 3월에 소멸하였다. 10월에 영양세포로 육안 및 조직 절단에 의한 검색에서 성숙되지 않았다. 11월 중순경부터 육안으로는 암.수배우체가 구분되지 않았으나 조직 절단한 결과, 조정기와 조과기을 형성하고 있었다. 12월 초순부터 육안으로 암.수배우체가 확연히 구분되기 시작하였고, 2월경부터 성숙과 더불어 정자낭과 과포자낭의 방출로 점차 엽장의 길이가 줄어드는 추세를 보였다. 3월 초순경에는 색상이 퇴색되고 엽체 가변부에 녹아 내리는 현상이 나타나기 시작하여, 정자방출이 완료되었다. 12월 3일에 암컷의 평균 엽장은 113.0$\pm$6.8mm, 평균 엽폭은15.3$\pm$1.3mm로 나타났다. 수배우체의 평균엽장은 83.2$\pm$5.4mm, 평균엽폭은 16.8$\pm$1.9mm로 나타났다. 1월 28일 경에는 암배우체의 평균 엽장은 94.6$\pm$6.4mm로 엽폭은 29.1mm$\pm$5.1로 커졌다. 수배우체의 경우에 평균 엽장이 107.8$\pm$7.3mm, 평균 엽폭은 25.9$\pm$0.9mm로 엽장과 엽폭이 반비례되는 현상이 나타났다.

Keywords

References

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Cited by

  1. Ecological Study on the Seaweed Porphyra pseudolinearis Originated from the East Sea, Korea vol.14, pp.2, 2004, https://doi.org/10.5352/JLS.2004.14.2.331