Public Awareness and Community-Based Conservation for the Horseshoe Crab at Saikai National Park in Nagasaki Prefecture, Japan



Formerly horseshoe crabs (Tachypleus tridentatus) were commonly distributed in Japan. However, the horseshoe crab population has been decreasing due to habitat loss caused by coastline development. The Saikai Pearl Sea Center Aquarium (SPSCA) has been conducting many activities for horseshoe crab conservation at Kujukushima Islands in Japan. In SPSCA, we attach great importance to cooperation with local fishermen for public awareness. Because there is so much by-catch of horseshoe crabs in the Kujukushima area, local fishermen bring us much useful information on distribution and habitat. Basically, horseshoe crabs are a burden to fishermen. We make much effort to deepen their understanding of horseshoe crabs. Recently local fishermen are recognizing that horseshoe crabs are endangered and valuable animals. We also exhibit living horseshoe crabs at SPSCA, give lectures to local schools, conduct excursions to observe the habitat of horseshoe crabs, engage in cooperation with local government, and publicize our work in newspapers and TV. For research activities, we measure morphology for all individual by-caught horseshoe crabs and submit blood samples for DNA analysis in Kyushu University. We report on the public awareness and research activities at SPSCA.


Public Awareness Horseshoe Crab Sand Beach Local Fisherman Longe Tail 



This study was conducted under the total support by Sasebo Pearl Sea Center Aquarium (SPSCA). This study could not be completed without the cooperation of the Ainoura Fishermen’s Cooperative Association and the Sasebo Fishermen’s Cooperative Association. We thank Professor S. E. Rife of Nagasaki Prefectural University for his review and correction of the English manuscript.


  1. Hashiguchi K (2004). Schooling of the ice gogy, Leucopsarion petersi observed in the coastal water of an isle, Makinoshima of Kujukushima Isles, Nagasaki Prefecture. Trans Nagasaki Biol Soc 57: 35–37Google Scholar
  2. Hisano C, Maeda K, Okuma T, Yamaguchi Y, Kawakubo A, Hashiguchi K (2005). Kujukushima ni okeru Kabutogani no Sanranjokyo oyobi Sanranchi Chosa no Kekka. Kabutogani, 25Google Scholar
  3. Ikezaki Y (1977). Nagasakiken Matsuurashi ni okeru Kabutogani Sanranchi no Hkken. Trans Nagasaki Biol Soc 13: 49–50Google Scholar
  4. Ikezaki Y (1980). Fukushima no Dobutsu, In “Fukushumacho Kyodoshi” Ed by Fukushimacho Kyodoshi Hensan Iinkai, 115–116. Fukushima Municipal Office, FukushuimaGoogle Scholar
  5. Ikezaki Y (1995). Asase no Ikitakaseki – Kabutogani, In “Mizube He Youkoso – Nagasakiken No Mizu To Seibutsu”, 48–51. Nagasakiken Shizenhogo Kyokai, NagasakiGoogle Scholar
  6. Itow T (1997) The pollution of coastal waters and malformations of horseshoe crab embryos. Bull Fac Educ Shizoka Univ Nat Sci 48: 15–33Google Scholar
  7. Itow T, Loveland RE, Botton ML (1998) Developmental abnormalities in horseshoe crab embryos caused by heavy metals. Arch Environ Contamin Toxicol 35: 33–40CrossRefGoogle Scholar
  8. Kai S, Morikawa J (1999). The horseshoe crab, Tachypleus tridentatus, collected from the coast of Nagasaki Prefecture and the East China Sea. Trans Nagasaki Biol Soc 61: 91–94Google Scholar
  9. Kawakubo A, Otani T. Nakarhara Y, Yone H, Shimojo K, Hashiguchi K, Ito T, Kurusaki Y, Yamaguchi Y (2005). Record of the crustacean and the mollusks from south Kujukushima isles area. Trans Nagasaki Biol Soc 60: 17–27Google Scholar
  10. Ministry of the Environment of Japan (2006). Threatened Wildlife of Japan: Red Data Book, Ministry of the Environment of Japan, TokyoGoogle Scholar
  11. Nagasaki Prefecture (2001). Red Data Book 2001, Nagasaki Prefectural Government, NagasakiGoogle Scholar
  12. Nishida S, Koike H (2006). Population subdivision of the horseshoe crab (Tachypleus tridentatus) in Japanese coast from mtDNA sequences. “Genetics of Speciation” American Genetics Association Annual Symposium. Vancouver, Canada. July 21–24Google Scholar
  13. Nishida S, Koike H (2009). Genetic structure of Japanese populations of Tachypleus tridentatus by mtDNA AT-rich region sequence analysis. In: Tanacredi JT, Botton ML, Smith DR (eds) Biology and Conservation of Horseshoe Crabs. Springer, New York, pp xxx–xxxGoogle Scholar
  14. Otani T (2004). Growth of the hard clam, Meretrix lusoria at the Ainoura River estuary, western Kyushu. Trans Nagasaki Biol Soc 57: 38–42Google Scholar
  15. Otani T (2005). Habitats of the hard clam, Meretrix lusoria in the vicinities of Sasebo. Trans Nagasaki Biol Soc 60: 33–38Google Scholar
  16. Sasebo City (2001). Red Data Book Sasebo 2002, 182. Sasebo Municipal Office, SaseboGoogle Scholar
  17. Sato M (2000). Ariake Kai no Ikimonotachi, Higata Kakoiki no Seibututayousei, 306. Kaiyusha, TokyoGoogle Scholar
  18. Sekiguchi K (1993). 1989 Nen Ikou no Nihon no Kabutogani, In Sekiguchi, K (ed), Nihon Kabutogani No Genkyou, Japanese Horseshoe Crab Preservation Society, Kasaoka, pp 179–222Google Scholar
  19. Sekiguchi K (1998). Biogeography. In: Sekiguchi, K (ed), Biology of Horseshoe Crabs. Science House, Tokyo, pp 22–49Google Scholar
  20. Sekiguchi K (1999). Kabutogani No Seibutsugaku, 14. Seisakudoujinsha, TokyoGoogle Scholar
  21. Yamaguchi T (1989). Nagasakiken no Kabutogani, in Nagasakiken no Seibutsu, 266. The Nagasaki Biological Society, NagasakiGoogle Scholar
  22. Yamaguchi T (1993). Nagasakiken ni okeru Kabutogani no Sanchi. In Sekiguchi, K (ed), Nihon Kabutogani No Genkyou, Japanese Horseshoe Crab Preservation Society, Kasaoka, pp 167–170Google Scholar
  23. Yamasaki T, Makioka. T, Saito J (1988). Morphology. In: Sekiguchi, K (ed), Biology of Horseshoe Crabs. Science House, Tokyo, pp 69–132Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Saikai Pearl Sea Center Aquarium (SPCSA)NagasakiJapan
  2. 2.Nagasaki Prefectural OfficeNagasakiJapan

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