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Effects of underwater brightness on behavior of Japanese spiny lobsters.

Research Project

Project/Area Number 06660234
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field General fisheries
Research InstitutionMie University

Principal Investigator

KOIKE Takashi  Mie Univ.Fac.Bioresources, Associate Professor, 生物資源学部, 助教授 (60093126)

Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1995: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1994: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsSpiny lobster / Behavior / Daily rhythm / Automatic recording sistem / Daytime brightness / nighttime brightness / Circadian rhythm / 照度 / 対光行動 / 行動量 / 回周行動
Research Abstract

Japanese spiny lobsters (Panulirus japonicus) have a nocturnal habit, and their activity is high in nighttime and low in daytime. We produced diurnal brightness change with a 12 hour bright period (daytime) and a 12 hour dark period (nighttime) artificially in our experimental tank, and observed the diurnal variation of the spiny lobster activities. The lobster activity was detected by measuring tension of wire which hangth the lobster cage. Under a standard condition with 3.3 x 10^2 1x daytimebrightness and 0 1x nighttime brightness, spiny lobsters exhibit clear diurnal variation pattern almost in phase with the brightness change. When the nighttime brightness is higher than a value of about 1.8 x 10^<-4> 1x, the night time activity is considerably suppressed. This value corresponds to the threshold value speparating the active and inactive regime of the nighttime activity of the spiny lobster. After the daytime brightness is changed from the standard value to 0 1x, the phase of the diurnal variation pattern is shifted and its period becomes 23 hours rather than 24 hours. By using is nature, the minimum daytime brightness recognizable to spiny lobsters is estimated to be about 2.3 x 10^<-5> 1x.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Koike T.: "Underwater brightness in nighttime and behaviors of Japanese spiny lobsters." La mer. 33. 37-46 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小池 隆: "水槽内におけるイセエビの行動の自動計測装置" 日本水産学会誌. 61. 629-630 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小池 隆: "イセエビが識別し得る最小の昼間照度" 水産海洋研究. 60. 61-69 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike,T.: "Automatic recording system of the position of a lobster in an experimental tank." La mer. 34(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小池 隆: "イセエビの活動を抑制する夜間照度の閾値" 日本水産学会誌. 62(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 小池 隆: "水槽内でのイセエビの動きの追跡観測" 海洋調査技術. 8(印刷中). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., Y.Morikawa, and M.Maegawa: "Underwater brightness in nighttime and behaviors of Japanese spiny lobsters" La mer. 33. 37-46 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., Y.Morikawa, M.Maegawa, M.Hirayama, and Y.Nagata: "Automatic recording system of movement of a spiny lobster in an experimental tank." Nippon Suisan Gakkaishi. 61 (in Japanese). 629-630 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., K.Hatashi, and Y.Nagata: "Minimum downward irradiance recognized by Japanese spiny lobster." Bull.Japan.Soc.Fish.Oceanogr.60 (in Japanese). 61-69 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., M.Maegawa, M.Hirayama, and Y.Nagata: "Automatic recording system of the position of a lobster in an experimental tank." La mer. 34 (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., K.Yoshimi, and Y.Nagata: "Threshold brightness for the activity suppression of Japanese spiny lobster during dark period." Nippon Suisan Gakkaishi. 62 (in Japanese) (in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T., M.Maegawa, and Y.Nagata: "Automatic tracking of lobster movements in an experimental tank." Jour.Japan.Soc.Mar.Surv.Tech.8 (in Japanese)(in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koike T.: "Underwater brightness in nighttime and behaviors of Japanese spiny lobsters." La mer. 33. 37-46 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小池 隆: "水槽内におけるイセエビの行動の自動計測装置" 日本水産学会誌. 61. 629-630 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小池 隆: "イセエビが識別し得る最小の昼間照度" 水産海洋研究. 60. 61-69 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Koike,T.: "Automatic recording system of the position of a lobster in an experimental tank." La mer. 34(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小池 隆: "イセエビの活動を抑制する夜間照度の閾値" 日本水産学会誌. 62(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小池 隆: "水槽内でのイセエビの動きの追跡観測" 海洋調査技術. 8(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 永田 豊: "イセエビの日周行動のパターンとその乱れ" 海の研究. 5(印刷中). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Takashi Koike et.al.: "Underwater brightness in nighttime and behaviors of Japanese spiny lobsters." La mer. 33(印刷中). (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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