Kazuhiko Sakai

Summary

Affiliation: University of the Ryukyus
Country: Japan

Publications

  1. ncbi request reprint Intraspecific contact and egg production in the massive coral Goniastrea aspera in Okinawa, subtropical Japan
    Kazuhiko Sakai
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, Japan
    Zoolog Sci 22:659-64. 2005
  2. doi request reprint Microscopic observation of symbiotic and aposymbiotic juvenile corals in nutrient-enriched seawater
    Yasuaki Tanaka
    Faculty of Science, University of the Ryukyus, Japan
    Mar Pollut Bull 68:93-8. 2013
  3. ncbi request reprint Settlement-competency period of planulae and genetic differentiation of the scleractinian coral Acropora digitifera
    Akira Nishikawa
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, Japan
    Zoolog Sci 22:391-9. 2005
  4. doi request reprint Genetic connectivity in the broadcast-spawning coral Acropora digitifera analyzed by microsatellite markers on the Sekisei Reef, southwestern Japan
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa 905 0227, Japan
    Zoolog Sci 26:209-15. 2009
  5. doi request reprint The population genetic approach delineates the species boundary of reproductively isolated corymbose acroporid corals
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa 905 0227, Japan
    Mol Phylogenet Evol 63:527-31. 2012
  6. pmc Coral larvae under ocean acidification: survival, metabolism, and metamorphosis
    Masako Nakamura
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, Japan
    PLoS ONE 6:e14521. 2011
  7. doi request reprint Effects of acidified seawater on coral calcification and symbiotic algae on the massive coral Porites australiensis
    Akira Iguchi
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa 905 0227, Japan
    Mar Environ Res 73:32-6. 2012
  8. pmc Gene flow and genetic diversity of a broadcast-spawning coral in northern peripheral populations
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, Japan
    PLoS ONE 5:e11149. 2010
  9. doi request reprint Ocean acidification reduces sperm flagellar motility in broadcast spawning reef invertebrates
    Masaya Morita
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa 905 0227, Japan
    Zygote 18:103-7. 2010
  10. ncbi request reprint Eggs regulate sperm flagellar motility initiation, chemotaxis and inhibition in the coral Acropora digitifera, A. gemmifera and A. tenuis
    Masaya Morita
    Department of Chemistry, Biology and Marine Sciences, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903 0213, Japan
    J Exp Biol 209:4574-9. 2006

Detail Information

Publications12

  1. ncbi request reprint Intraspecific contact and egg production in the massive coral Goniastrea aspera in Okinawa, subtropical Japan
    Kazuhiko Sakai
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, Japan
    Zoolog Sci 22:659-64. 2005
    ..The present results show that size-structured populations such as colonial corals may show phenotypic diversity in key demographic parameters, such as reproductive output, dependent on ecological conditions...
  2. doi request reprint Microscopic observation of symbiotic and aposymbiotic juvenile corals in nutrient-enriched seawater
    Yasuaki Tanaka
    Faculty of Science, University of the Ryukyus, Japan
    Mar Pollut Bull 68:93-8. 2013
    ..The comparison between the symbiotic and aposymbiotic juvenile corals showed that the establishment of a symbiotic association could be imperative for post-settlement juvenile corals to survive in high-nutrient seawater...
  3. ncbi request reprint Settlement-competency period of planulae and genetic differentiation of the scleractinian coral Acropora digitifera
    Akira Nishikawa
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, Japan
    Zoolog Sci 22:391-9. 2005
    ....
  4. doi request reprint Genetic connectivity in the broadcast-spawning coral Acropora digitifera analyzed by microsatellite markers on the Sekisei Reef, southwestern Japan
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa 905 0227, Japan
    Zoolog Sci 26:209-15. 2009
    ..Considering the pattern of the genetic connectivity of A. digitifera in the Sekisei Reef, the sites that are located within less-disturbed areas may act as larval sources and should, therefore, be preserved...
  5. doi request reprint The population genetic approach delineates the species boundary of reproductively isolated corymbose acroporid corals
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa 905 0227, Japan
    Mol Phylogenet Evol 63:527-31. 2012
    ..Our results suggest that recent speciation and shared ancestral polymorphisms could partly explain the para- and polyphyly of several Acropora species...
  6. pmc Coral larvae under ocean acidification: survival, metabolism, and metamorphosis
    Masako Nakamura
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, Japan
    PLoS ONE 6:e14521. 2011
    ....
  7. doi request reprint Effects of acidified seawater on coral calcification and symbiotic algae on the massive coral Porites australiensis
    Akira Iguchi
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa 905 0227, Japan
    Mar Environ Res 73:32-6. 2012
    ..Calcification and fluorescence yield among colonies clearly differed, showing that the response to acidified seawater is highly variable among colonies in natural coral populations...
  8. pmc Gene flow and genetic diversity of a broadcast-spawning coral in northern peripheral populations
    Yuichi Nakajima
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, Japan
    PLoS ONE 5:e11149. 2010
    ..Therefore, A. digitifera populations in the Nansei Islands may be able to recover relatively rapidly even when high disturbances of coral communities occur locally if populations on other reefs are properly maintained...
  9. doi request reprint Ocean acidification reduces sperm flagellar motility in broadcast spawning reef invertebrates
    Masaya Morita
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa 905 0227, Japan
    Zygote 18:103-7. 2010
    ..Urgent surveys are necessary for a better understanding of the physiological consequences of ocean acidification on sperm flagellar motility in a wide range of marine invertebrates...
  10. ncbi request reprint Eggs regulate sperm flagellar motility initiation, chemotaxis and inhibition in the coral Acropora digitifera, A. gemmifera and A. tenuis
    Masaya Morita
    Department of Chemistry, Biology and Marine Sciences, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa 903 0213, Japan
    J Exp Biol 209:4574-9. 2006
    ..This study is the first report to show that the egg secretes immobilization factor(s). Our results suggest that the flagellar motility regulation has evolved to avoid hybridization among different species during the mass spawning...
  11. ncbi request reprint Genetic variation and gene flow of broadcast spawning and planula brooding coral, Goniastrea aspera (Scleractinia) in the Ryukyu Archipelago, southern Japan
    Akira Nishikawa
    Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Motobu, Okinawa, Japan
    Zoolog Sci 20:1031-8. 2003
    ..In addition, gene flow on distant reefs by planulae originating from spawning might prevent divergence by planulae originating from brooding for short-distant dispersal among and within populations of G. aspera in the Ryukyu Archipelago...
  12. pmc Bidirectional sex change in mushroom stony corals
    Yossi Loya
    Department of Zoology, Tel Aviv University, 69978 Tel Aviv, Israel
    Proc Biol Sci 275:2335-43. 2008
    ..We posit that, similar to these plants, in the studied corals, sex change increases their overall fitness, reinforcing the important role of reproductive plasticity in scleractinian corals in determining their evolutionary success...