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홍조류 무절석회조, 납작돌잎 (Lithophyllum yessoense) 사분포자체의 포자방출과 생장

Tetraspore Release and Growth of a Crustose Coralline Alga, Lithophyllum yessoense (Rhodophyta, Corallinaceae)

  • Hwang Eun Kyoung (Department of Aquaculture, Pukyong National Univenity) ;
  • Kim Eun Jin (Department of Aquaculture, Pukyong National Univenity) ;
  • Kim Hyung Geun (Faculty of Marine Bioscience & Technology, Kangnung National University) ;
  • Sohn Chul Hyun (Department of Aquaculture, Pukyong National Univenity)
  • 발행 : 2002.05.01

초록

부산의 기장군 지역 조하대에 폭넓게 분포하는 무절석회조류의 한 종인 납작돌잎 (Lithophyllum yessoense)을 대상으로 하여 사분포자의 배양환경에 따른 생장과 사분포자 방출량을 정량화 함으로써 포자방출 양상을 구명하고자 하였다. 포자의 배양실험은 2000년 3월에 채집한 납작돌잎 사분포자체로부터 사분포자를 받아 수행하였다. 배양조건은 온도는 5조건 (5, 10, 15, 20, $25^{\circ}C$), 광량은 4조건 (0, 20, 50, 100$\mu$mol${\cdot}m^{-2}$${\cdot}s^{-1}$)과 염분농도는 6조건 (0, 9, 17, 25, 34, 43 ppt) 하에서 각각 포자의 상대생장률을 측정하였다. 월별 포자방출의 정량화는 2000년 8월부터 2001년 7월까지 매월 시료를 채집하여 50${\mu}mol\;m^{-2}s^{-1},\;15^{\circ}C$과 16:8h (L:D) 조건하에서 48시간 동안 방출된 포자의 총 수를 계수하였다. 배우체의 최적 생장 조건은 $20^{\circ}C$, $20{\mu}mol m^{-2}. s^{-1}$과 34ppt조건이었으며, 최대 상대생장률은 $20^{\circ}C$ 조건에서 0.1232였다. 포자의 방출량은 9월에 사분포자체 단위면적 ($cm^2$) 당 266개로 최고치를 보였고, 연중 1월부터 3월까지의 시기를 제외한 모든 시기에 포자가 방출되는 것으로 나타났다.

Growth and tetraspore release pattern of lithophyllum yessoense (Rhodophyta, Corallinaceae) were investigated from March 2000 to July 2001. Pinkish tetraspores were 40.2 $\pm$ 0.4 $\mu$m in diameter. After release, tetraspores attached on substrate shortly. Culture conditions were five temperatures (5, 10, 15, 20, 25^{\circ}C), four irradiances (0, 20, 50, 100 $\mu$mol${\cdot}m^{-2}$${\cdot}s^{-1}$) and six salinities (0, 9, 17, 25, 34, 43 ppt). Maximum growth of gametophyte was occurred at $20^{\circ}C$, $20{\mu}mol\;m^{-2}$${\cdot}s^{-1}$, 16: 8h (L:D) and 34 put. Maximum relative growth rate was 0.1232 at $20^{\circ}C$. The amount of tetraspore release showed maximum at September as 266 cells per crust area ($cm^2$), and tetraspores did not release from January to March.

키워드

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피인용 문헌

  1. The Effects of Environmental Factors on the Growth of Lithophyllum yessoense and Hildenbrandia rubra Sporelings in Laboratory Culture vol.46, pp.6, 2013, https://doi.org/10.5657/KFAS.2013.0827
  2. Effects of Temperature on the Spore Release and Growth of Lithophyllum yessoense and Hildenbrandia rubra vol.46, pp.3, 2013, https://doi.org/10.5657/KFAS.2013.0296