南部沖縄トラフに生息するゴエモンコシオリエビ Shinkaia crosnieri (十脚目 : 異尾下目 : コシオリエビ科)の分布と個体群構造  [in Japanese] Distribution and Population Structure of the Galatheid Crab Shinkaia crosnieri (Decapoda : Anomura : Galatheidae) in the Southern Okinawa Trough  [in Japanese]

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Author(s)

    • 土田 真二 TSUCHIDA Shinji
    • 海洋科学技術センター海洋生態・環境研究部 Marine Ecosystems Research Department, Japan Marine Science and Technology Center
    • 藤原 義弘 FUJIWARA Yoshihiro
    • 海洋科学技術センター海洋生態・環境研究部 Marine Ecosystems Research Department, Japan Marine Science and Technology Center
    • 藤倉 克則 FUJIKURA Katsunori
    • 海洋科学技術センター海洋生態・環境研究部 Marine Ecosystems Research Department, Japan Marine Science and Technology Center

Abstract

The spatial distribution around hydrothermal vents, population structure, and relative growth parameters of the galatheid crab Shinkaia crosnieri were examined. Surveys were done by the Shinkai 2000 on the Hatoma and Dai-yon Yonaguni Knolls in the southern Okinawa Trough. On the Hatoma Knoll, S. crosnieri inhabited areas (temp. 4.0-6.2°C) about 0.2-2 m away from the active vent (temp. 301°C). In the outer area of the habitat of S. crosnieri (temp. 3.0-3.7°C), dense beds of Bathymodiolus mussels occurred and aggregations of Alvinocaris shrimp were observed. In this survey, 248 specimens of S. crosnieri were collected. Small, probably just post-metamorphic juveniles and large, mature adults co-occurred. Chelipeds of males were proportionally larger than those of females, while abdomens of females were proportionally larger than those of males. Larger chelipeds in males are thought to have evolved through male-male competition for females, and wider abdomens in females are thought to be related to the attachment of fertilized eggs to the abdominal appendages.

Journal

  • Japanese Journal of Benthology

    Japanese Journal of Benthology 58, 84-88, 2003-06-27

    JAPANESE ASSOCIATION OF BENTHOLOGY

References:  14

Cited by:  4

Codes

  • NII Article ID (NAID)
    10016212181
  • NII NACSIS-CAT ID (NCID)
    AA11376003
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1345112X
  • NDL Article ID
    6837157
  • NDL Source Classification
    ZR1(科学技術--生物学)
  • NDL Call No.
    Z74-B668
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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