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Comparative Laboratory Culture Studies of the Native Kelp Kjellmaniella crassifolia and the Introduced Kelp Laminaria japonica in East Coast of Korea  

Kim, Hyung-Geun (Faculty of Marine Bioscience and Technology Kangnung National University)
Park, Joong-Goo (Faculty of Marine Bioscience and Technology Kangnung National University)
Kim, Dong-Sam (Faculty of Marine Bioscience and Technology Kangnung National University)
Publication Information
Journal of Aquaculture / v.18, no.4, 2005 , pp. 299-304 More about this Journal
Abstract
Laboratory culture of the native kelp Kjelimaniella crassifolia and the introduced species Laminaria japonica in east coast of Korea were compared at each stage of their life cycles. In the zoospore stage, L. japonica grows optimally at a water temperature of $15{\~}20^{\circ}C$ achieving $95\%$ spore release in 24 hours, whereas K. crassifolia requires 48 hours to achieve $90\%$ spore release in these conditions. Good growth of gametophytes occurred at $10^{\circ}C$ and $15^{\circ}C$ in both species. L. japonica grows optimally under high light intensity ($80{\~}120{\mu}mol{\cdot}m^{-2}s^{-1}$) while K. crassifolia grows best under low light intensity ($40{\~}60{\mu}mol{\cdot}m^{-2}s^{-1}$). Growth of juvenile sporophytes of L. japonica was good in various water temperatures ($10{\~}20^{\circ}C$) and light levels ($40{\~}120{\mu}mol{\cdot}m^{-2}s^{-1}$) while K. crassifolia grew to optimal blade length only under specific conditions ($10{\~}40{\mu}mol{\cdot}m^{-2}s^{-1}$). While the optimal culture conditions for K. crassifolia were more constrained than those of L. japonica which tolerated a wide range of water temperatures and light intensities, the laboratory culture conditions for both of these species reflect the natural environment in which these species are found.
Keywords
Laboratory culture; Kjelimaniella crassifolia; Laminaria japonica; kelp; East coast of Korea;
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