Impacts of multi-specific blooms of harmful algae (HAB) on reproduction of bivalves

2016 Fiscal Year Annual Research Report

• Project/Area Number: 15H06219
• Research Institution: Tokyo University of Marine Science and Technology
• Principal Investigator: Leila Basti 東京海洋大学, 学術研究院, 助教 (00758097)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: Harmful Algal Blooms / Multispecif blooms / Japanese pearl oyster / Reproduction / Chattonella marina / H. circularisquama / Karenia spp. / Alexandrium spp.

Outline of Annual Research Achievements

Several previous studies have shown that harmful algal blooms (HAB) affect the reproduction and early-life development of bivalve molluscs. In previous studies, we have shown that Alexandrium affine, A. catenella, Karenia mikimotoi, K. papilionacea, Chattonella marina, C. antiqua, Heterosigma akashiwo, and Heterocapsa circularisquama affect the early-life development of Japanese pearl oyster, Pinctada fucata martensii. In the present study, the effects of HAB species forming multi-specific blooms in the culture area of Japanese pearl oyster on 1 day-old D-larvae, 6 day-old larvae, and 16 day-old larvae were tested. Larvae were affected by exposure to H. circularisquama, C. marina or K. mikimotoi. Mixed blooms of K. mikimotoi and K. papilionacea, K. mikimotoi and C. marina, H. circularisquama and C. marina and, H. circularisquama, C. marina and K. mikimotoi differentially affected the three stages of larvae with increased sensitivity with elder larvae. This is the first study to examine effects of multispecific bloom-forming species of harmful algae on reproduction of a representative bivalve mollusc. The effect reported warrant further investigation of the effects of multispecific blooms on the reproduction of bivalve molluscs.

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Deleterious effects of harmful dinoflagellates and raphidophytes on Japanese pearl oyster egg viability and spermatozoa swimming velocity (2017)
  • Author(s): Kana Banno, Tatsuya Oda, Kiyohito Nagai, Satoshi Nagai, Yuji Tanaka, Leila Basti
  • Journal Title: Journal of Shellfish Research Volume: 印刷中 Pages: 印刷中
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Lethal effects of ichthyotoxic raphidophytes, Chattonella marina, C. antiqua, and Heterosigma akashiwo, on post-embryonic stages of the Japanese pearl oyster, Pinctada fucata martensii (2016)
  • Author(s): Leila Basti, Kiyohito Nagai, Jiyoji Go, Sho Okano, Tatsuya Oda, Yuji Tanaka, Satoshi Nagai
  • Journal Title: Harmful Algae Volume: 59 Pages: 112-122
  • DOI: https://doi.org/10.1016/j.hal.2016.08.003
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Deleterious effects of harmful dinoflagellates and raphidophytes on Japanese pearl oyster egg viability and spermatozoa swimming velocity (2017)
  • Author(s): Kana Banno, Tatsuya Oda, Kiyohito Nagai, Satoshi Nagai, Yuji Tanaka, Leila Basti
  • Organizer: 109th Annual Meeting of the National Shellfisheries Association (USA)
  • Place of Presentation: Knoxville, Tennessee, USA
  • Year and Date: 2017-03-26 – 2017-03-26
  • Int'l Joint Research
• [Book] Harmful Algal Blooms and Shellfish. In : Shumway, S.E., Burkholder, J.M., Morton, S.L. (Eds). Harmful Algal Blooms and Their Management: A compendium desk reference. (2017)
  • Author(s): Leila Basti, Helene Hegaret, Sandra E. Shumway
  • Total Pages: 印刷中
  • Publisher: Wiley-Blackwell