Ocean Science Journal

, Volume 50, Issue 3, pp 519–527

Phenology of host Chondrus ocellatus with filamentous green endophyte infection

  • Hang Gil Choi
  • Changsong Kim
  • Young Sik Kim
  • Soon Jeong Lee
  • Myoung Ae Park
  • Ki Wan Nam
Article

DOI: 10.1007/s12601-015-0047-8

Cite this article as:
Choi, H.G., Kim, C., Kim, Y.S. et al. Ocean Sci. J. (2015) 50: 519. doi:10.1007/s12601-015-0047-8

Abstract

Monthly variations in gametophyte and tetrasporophyte biomass of Chondrus ocellatus Holmes, a commercial carragenophyte alga, were examined at wave-exposed and sheltered shore stations of Jungdori, Wando, Korea from September, 2013 to August, 2014. The frequency of infection of the fronds with a green filamentous endophyte was investigated and the endophyte was identified using tufA analysis. Biomass of C. ocellatus was significantly greater at the exposed shore (331.84 g wet wt. m-2) than at the sheltered shore (181 g wet wt. m-2); the average biomass was 259 g wet wt. m-2. Gametophyte biomass of C. ocellatus accounted for 64.25% of the total biomass (259 g wet wt. m-2); tetrasporophyte biomass was 93.05 g wet wt. m-2 (35.93%). Biomass was minimal in winter and maximal in summer at both stations and similar patterns were found for gametophyte and tetrasporophyte biomass. Frond lengths and weights of C. ocellatus were slightly greater at the exposed shore than at the sheltered shore. Fronds of C. ocellatus were infected by a green endophytic species, which grew in between the cortical and medullar tissue and was identified as Ulvella ramosa by tufA analysis. We conclude that the optimal harvesting period of the C. ocellatus field population in terms of biomass might be autumn, after the rapid growth period. Additional in-depth research on the endophytes, such as infection mechanism and frequency, should be performed in order to maintain and manage the field populations of C. ocellatus.

Keywords

phenology Chondrus ocellatus endophytic infection gametophyte sporophyte 

Copyright information

© Korea Ocean Research & Development Institute (KORDI) and the Korean Society of Oceanography (KSO) and Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Hang Gil Choi
    • 1
  • Changsong Kim
    • 2
  • Young Sik Kim
    • 2
  • Soon Jeong Lee
    • 3
  • Myoung Ae Park
    • 4
  • Ki Wan Nam
    • 5
  1. 1.Faculty of Biological Science and Institute of Basic Natural SciencesWonkwang UniversityIksanKorea
  2. 2.Department of Marine Biotechnology, College of Ocean Science and EngineeringKunsan National UniversityGunsanKorea
  3. 3.Seaweed Research CenterNFRDIMokpoKorea
  4. 4.Aquatic Life Disease Control DivisionNFRDIBusanKorea
  5. 5.Department of Marine Biology, College of Fisheries SciencesPukyong National UniversityBusanKorea

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