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Biology and effects of cartilaginous fishes on fisheries in the Sagami Bay

Research Project

Project/Area Number14560163
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field General fisheries
Research InstitutionNihon University

Principal Investigator

TANIUCHI Toru  Nihon University, College of Bioresource Sciences, Professor, 生物資源科学部, 教授 (00012021)

Co-Investigator(Kenkyū-buntansha) KOJIMA Takahito  Nihon University, College of Bioresource Sciences, Associate Professor, 生物資源科学部, 助教授 (60205383)
Project Period (FY) 2002 – 2004
Project Status Completed(Fiscal Year 2004)
Budget Amount *help
¥4,000,000 (Direct Cost : ¥4,000,000)
Fiscal Year 2004 : ¥1,200,000 (Direct Cost : ¥1,200,000)
Fiscal Year 2003 : ¥1,500,000 (Direct Cost : ¥1,500,000)
Fiscal Year 2002 : ¥1,300,000 (Direct Cost : ¥1,300,000)
KeywordsSagami Bay / cartilaginous fishes / distribution / Reproduction / age character / growth / food habits / predation / サメ類 / 年齢 / 定同位対比 / 食地位 / 寄生性カイアシ類 / 単生類 / 軟骨魚類 / 棘断面 / 年齢査定 / 安定同位対比 / 寄生虫 / 分布構造 / 年齢と成長
Research Abstract

The total number of 21 species of cartilaginous fishes were collected from the depth below 150 m in the Sagami Bay during the course of the present study. Three triakid species were provided by fishermen. Among those species, most abundant species was Squalus mitsukurii, making up 69% of the total catch of 442 specimens captured by R/V Enoshima-maru belonging to Kanagawa Prefectural Fisheries Research Center. Other species constituted less than 10 % of the total.
Shortspined dog fish, S.mitsukurii, ranged from 150 m to 550 m in depth, mainly between 300-400 m. Trend of catch per unit efforts (CUPUE) using hooked rates expressed by number caught per hundred hooks and unit net length, indicates that they made seasonally vertical migration and go into deep waters during warm seasons while they inhabit shallower depth during cold seasons. However, they were not caught in mid-winter in the coastal waters while they are captured in the seamount near the entrance of Tokyo Bay., suggesting hori … More zontal migration within the bay as well. Segregation by sizes and sexes were also suggested, judging from scarcity of males and small specimens in the catch. Predation by S.mitsukurii on commercially important fishes distributed in the Sagami Bay was also investigated using stomach contents analysis and tooth scars of damaged fishes. As a result, it is concluded that about 8 % of fishes caught by vertical loglines suffered from predation by S.mitsukurii. Age and growth studies were also conducted using annuli marked on second dorsal fin spines. Growth curves were close to those presented by the past studies in offshore area of Choshi while quire different from those in Ogasawara and Seamount of Hancock... Reproductive studies of S.mitsukurii indicate that reproductive strategy is a little different from that obtained from Choshi area. Stomach contents analysis reveals that there seemed to be a little different between regions in Sagami Bay but totally S.mitsukurii are an exclusive picivore as reported by other studies in other regions. Feeding status of seven species was analyzed using stable isotope ratio of nitrogen and carbon. C-N maps indicated that differences between species are rather smaller than differences between habitats. They also differed according to growth stage. Less

Report

(4results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report

Research Products

(21results)

All 2005 2004 2003 2002 Other

All Journal Article Book Publications

  • [Journal Article] Measurements of auditory sensitivity in common carp by auditory brainstem response technique and cardiac conditioning method2005

    • Author(s)
      T.Kojima, T.Taniuchi他
    • Journal Title

      Fisheries Science 71(1)

      Pages : 95-100

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Measurements of auditory ensitivity in common carp Cyprinus carpio by the auditory brainstem response technique and cardiac conditioning method.2005

    • Author(s)
      T.Kojima, H.Ito, T.Komada, T.Taniuchi, T.Akamatsu
    • Journal Title

      Fisheres Science 71(1)

      Pages : 95-100

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Measurements of auditory sensitivity in common carp by auditory brainstem response technique and cardiac conditioning method2005

    • Author(s)
      T.Kojima, T.Taniuchi et al.
    • Journal Title

      Fisheries Science 71(1)

      Pages : 95-100

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Age and growth of alfonsino Beryx splendens from the Kanto District centrasl Japan, based on growth increments on otoliths2004

    • Author(s)
      T.Taniuchi他
    • Journal Title

      Fisheries Science 70(4)

      Pages : 845-851

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] ジンベエザメの遊泳速度2004

    • Author(s)
      谷内 透ら
    • Journal Title

      板鰓類研究会報 40号

      Pages : 13-19

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Age and growth of Alfonsino from the kanto District, central Japan, based on microstructural growth increments on otoliths.2004

    • Author(s)
      T.Taniuchi, T.Kanaya, S.Uwabe, T.Kojima, S.Akimoto, I.Mitani
    • Journal Title

      Fisheres Science 70(4)

      Pages : 845-851

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Swimming speed of whale sharks in Okinawa Churaumi Aquarium2004

    • Author(s)
      T.Taniuchi, K.Ohta, E.Kokaji, T.Kojima, K.Sato, M.Toda, S.Uchida
    • Journal Title

      Report of Japan Society for Elasmobranch Studies 40

      Pages : 13-19

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Age and growth of alfonsino Beryx splendens from the Kanto District, centrasl Japan, based on growth increments on otoliths2004

    • Author(s)
      T.Taniuchi et al.
    • Journal Title

      Fisheries Science 70(4)

      Pages : 845-851

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Use of parasites as biological tags for separating stocks of the srar-spotted dogfish Mustelus manazo in Japan and Taiwan.2003

    • Author(s)
      Yamaguchi A, T.Taniuchi他
    • Journal Title

      Fisheries Science 69(2)

      Pages : 337-342

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Occurrence of two species of elasmobranchs, Carcharhinus leucas and Pristis microdon, in Betsiboka River basin, west Madagascar.2003

    • Author(s)
      T.Taniuchi他
    • Journal Title

      Cybium 27(3)

      Pages : 237-241

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Molecular cloning and sequencing of the silver chimaera (Chimaera phantasma) interleukin-8 cDNA.2003

    • Author(s)
      Inoue, Y., T.Taniuchi
    • Journal Title

      Fish & Shellfish Immunology 15

      Pages : 269-274

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Molecular cloning and sequencing of the silver chimaera (Chimaera phantasma) interleukin-8 cDNA.2003

    • Author(s)
      Y.Inoue, M.Endo, C.Haruta, T.Taniuchi, T.Moritomo, T.Nakanishi
    • Journal Title

      Fish & Shellfish Immunology 15

      Pages : 269-274

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Occurrence of two species of elasmobranchs, Carcharhinus leucas and Pristis microdon, in Betsiboka River basin, west Madagascar.2003

    • Author(s)
      T.Taniuchi, H.Ishihara, S.Tanaka, S.Hyodo, M.Murakami, B.Seret
    • Journal Title

      Cybium 27(3)

      Pages : 237-241

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Use of parasites as biological tags for separating stocks of the srar-spotted dogfish Mustelus manazo in Japan and Taiwan.2003

    • Author(s)
      A.Yamaguchi, H.Yokoyama, K.Ogawa, T.Taniuchi
    • Journal Title

      Fisheries.Science 69(2)

      Pages : 337-342

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Deepsea cartilaginous fishes caught in Sagami Bay, central Japan.2002

    • Author(s)
      A.Ebisawa, T.Taniuchi
    • Journal Title

      Report of Japan Society for Elasmobranch Studies 37

      Pages : 14-19

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Damage to fishes by shortspine spurdogfish, Squalus mitsukurii, in experimental vertical bottom fishing for Pterothrissus gissu in Sagami Bay.2002

    • Author(s)
      C.Hirano, T.Taniuchi, I.Mitani
    • Journal Title

      Report of Kanagawa Prefectural Fisheries Research center 7

      Pages : 11-16

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] 水の事典2004

    • Author(s)
      谷内 透 他
    • Total Pages
      551
    • Publisher
      朝倉書店
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Inoue, Y.E., Endo, C., Haura.T., 他2名: "Molecular cloning and sequenceing of the silver chimaera (Chimaera phantasma) interleukin-8 cDNA"Fish & Shellfish Immunology. 15. 269-274 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Taniuchi, T., 他5名: "Occurrence of two species of elasmobranches, Carcharhinus leucas and Pristis microdon, in Betsiboka Rivwer, west Madagascar"Cybium. 27(3). 237-241 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 平野千春, 谷内 透, 三谷 勇: "相模湾におけるサメによるギスへの食害"神奈川県総合水産研究所報告. 7号. 11-16 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 海老沢明宏, 谷内 透: "相模湾で漁獲される深海性軟骨魚類"板鰓類研究会報. 38号. 14-19 (2002)

    • Related Report
      2002 Annual Research Report

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Published : 2002-04-01   Modified : 2016-04-21  

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