Effect of low temperature rearing, using deep-sea water, on gonadal maturation of the short-spined sea urchin, Strongylocentrotus intermedius, in Rausu, Hokkaido

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• 作者：Takaaki Kayaba (1)
  Kohji Tsuji (2)
  Hiroshi Hoshikawa (3)
  Yaoki Kikuchi (4)
  Kazuhiro Kawabata (4)
  Isao Otaki (4)
  Toru Watanabe (5)
  
• 关键词：Short ; spined sea urchin ; Gonadal maturation ; Gametogenesis ; Deep ; sea water ; Low temperature rearing ; Gonadal growth ; Sea urchin aquaculture
• 刊名：Fisheries Science
• 出版年：2012
• 出版时间：November 2012
• 年：2012
• 卷：78
• 期：6
• 页码：1263-1272
• 全文大小：563KB
• 参考文献：1. Unuma T (2002) Gonadal growth and its relationship to aquaculture in sea urchins. In: Yokota et al (eds) The sea urchin: from basic biology to aquaculture. Swets & Zeitlinger, Lisse, pp 115-27
  2. Yamamoto M, Ishine M, Yoshida M (1988) Gonadal maturation independent of photic conditions in laboratory-reared sea urchins, / Pseudocentrotus depressus and / Hemicentrotus pulcherrimus. Zool Sci 5:979-88
  3. Sakairi K, Yamamoto M, Ohtsu K, Yoshida M (1989) Environmental control of gonadal maturation in laboratory-reared sea urchin, / Anthocidaris crassispina and / Hemicentrotus pulcherrimus. Zool Sci 6:721-30
  4. Pearse JS, Pearse VB, Davis KK (1986) Photoperiodic regulation of gametogenesis and growth in the sea urchin / Strongylocentroutus purpuratus. J Exp Zool 237:107-18 CrossRef
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  9. Masaki K, Kawahara I (1995) Promotion of gonadal maturation by regulating water temperature in the sea urchin / Pseudocentrotus depressus—I (in Japanese). Bull Saga Prefect Sea Farming Center 4:93-00
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  11. Tomita K, Kishida M, Masusaki K, Iisawa N (1984) Seasonal changes in gonads of short-spined sea urchin / Strongylocentrotus intermedius in the coast of East Hokkaido (in Japanese). Mon Rep Hokkaido Fish Exp Stn 41:469-79
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  15. Agatsuma Y, Hayashi T, Uchida M (1989) Seasonal larval occurrence and spawning season of two sea urchins, / Strongylocentrotus intermedius and / S. nudus, in southern Hokkaido (in Japanese with English abstract). Sci Rep Hokkaido Fish Exp Stn 33:9-0
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  19. Agatsuma Y, Nishikiori T (1991) Gonad development of the northern sea urchin, / Strongylocentrotus nudus, that experimental fed fishes. I. Gonad development (in Japanese with English abstract). Sci Rep Hokkaido Fish Exp Stn 37:59-6
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• 作者单位：Takaaki Kayaba (1)
  Kohji Tsuji (2)
  Hiroshi Hoshikawa (3)
  Yaoki Kikuchi (4)
  Kazuhiro Kawabata (4)
  Isao Otaki (4)
  Toru Watanabe (5)
  
  1. Kushiro Fisheries Research Institute, Hokkaido Research Organization, Kushiro, Hokkaido, 085-0024, Japan
  2. Abashiri Fisheries Research Institute, Hokkaido Research Organization, Monbetsu, Hokkaido, 094-0011, Japan
  3. Central Fisheries Research Institute, Hokkaido Research Organization, Yoichi, Hokkaido, 046-8555, Japan
  4. Department of Mariculture, Rausu Fishery Cooperative, Rausu, Hokkaido, 086-1893, Japan
  5. Hachinohe Scientific Museum Marient, Hachinohe, Aomori, 031-0841, Japan
  

文摘

It has long been hoped that sea urchins could be served to visitors to seafood restaurants, hotels, and summer festivals in Rausu, located in the world natural heritage site “Shiretoko,-during the summer tourist season. However, to date this has not been feasible because of the sea urchin spawning season (July–September), during which the quality of the gonads, the edible part of the sea urchin, decreases due to maturation. In this study, we examined the possibility of suppressing gonadal maturation and maintaining high-quality sea urchin gonads by low-temperature rearing using deep-sea water. Unripe sea urchins captured before the spawning season were reared under two temperature conditions from June to September. In those groups reared at ambient temperatures (2.8-9.6?°C), gametogenesis in both sexes progressed rapidly with increased temperature, and almost all sea urchins reached full maturity by late July. In contrast, in groups reared at low temperatures (2.1-.1?°C), gametogenesis progressed slowly and >60?% of the sea urchins did not reach maturity even by early September. The feeding experiment also revealed that feeding with live Saccharina diabolica could increase the gonadal volume efficiently under low-temperature rearing conditions. These results demonstrate that low-temperature rearing, supplemented with feeding, is effective in suppressing gametogenesis to allow for the harvesting of high-quality sea urchins during the summer tourist season.