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

• Project/Area Number: 15H06219
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Aquatic bioproduction science
• 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)
• Research Collaborator: NAGAI Kiyohito
• Project Period (FY): 2015-08-28 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: Harmful Algal Blooms / Japanese pearl oyster / Reproduction / Karenia spp. / Chattonella marina / H. circularisquama / Alexandrium spp. / Multispecif blooms / 水産学 / 再生産 / 二枚貝 / 赤潮 / 無脊椎

Outline of Final Research Achievements

In previous studies, we have shown that several species of harmful algae 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, 6 day-old, 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.

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
  • 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: 10.1016/j.hal.2016.08.003
  • Peer Reviewed / Open Access / 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
  • Int'l Joint Research
• [Presentation] Reproduction of bivalve molluscs in a changing environment: Impact of harmful algal blooms and implications for aquaculture (2016)
  • Author(s): Leila Basti, Kiyohito Nagai, Tatsuya Oda, Satoshi Nagai, Yuji Tanaka
  • Organizer: Aquaculture 2016, World Aquaculture Society
  • Place of Presentation: Las Vegas, Nevada, USA
  • Year and Date: 2016-02-22
  • 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
  • Publisher: Wiley-Blackwell