Journal of Oceanology and Limnology

, Volume 37, Issue 2, pp 657–664 | Cite as

Physiological differences in the growth and maturation of Eisenia bicyclis and Ecklonia cava gametophytes in Korea

  • Han Gil Choi
  • Da Vine Jeon
  • Seo Kyoung Park
  • Xu GaoEmail author


The objective of this study was to examine the effects of temperature and light intensity on growth of female gametophytes of Eisenia bicyclis and Ecklonia cava and responses of these female gametophytes to Fe addition and daylength. Female gametophytes of each species were cultured at four temperatures (10, 15, 20, and 25°C) and under a combination of four light intensities (10, 20, 40, and 80 μmol photons/(m 2 ·s)) with two temperatures (15 and 20°C for E i. bicyclis; 20 and 25°C for E c. cava) to clarify their optimal growth conditions. Growth and maturation of female gametophytes of these two species under a combination of five Fe-EDTA concentrations (0, 1, 2, 4, and 8 μmol/L) and three daylengths (10, 12, and 14 h) were also examined. The growth of E i. bicyclis gametophyte was maximal at approximately 15–20°C, 20 μmol photons/(m 2 ·s), Fe-EDTA concentration of 8 μmol/L and daylengths of 12–14 h. While E c. cava gametophytes showed optimal growth at approximately 20–25°C, 20 μmol photons/(m 2 ·s), Fe- EDTA concentration of 8 μmol/L and daylength of 14 h. Maturation of gametophytes was enhanced at Fe-EDTA concentration of 4 μmol/L for E i. bicyclis and at 2 μmol/L for E c. cava. In conclusion, optimal growth temperatures and Fe-EDTA concentrations for maturation of E i. bicyclis and E c. cava gametophytes were different. Higher optimal growth temperature for E c. cava gametophytes may contribute to its wider geographical distribution compared to E i. bicyclis which has restricted habitats in Korea. This suggests that addition of Fe ion could be used to recover beds of these two species in barren grounds of Korea.


Ecklonia cava Eisenia bicyclis gametophyte growth maturation 


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We would like to thank anonymous reviewers for their helpful comments and suggestions that improved the manuscript. This paper was supported by Wonkwang University in 2017.


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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Han Gil Choi
    • 1
  • Da Vine Jeon
    • 1
  • Seo Kyoung Park
    • 1
  • Xu Gao
    • 1
    Email author
  1. 1.Faculty of Biological Science and Sea & BiotechWonkwang UniversityIksan, JeonbukKorea

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