ECOLOGY OF AN ATYID SHRIMP CARIDINA JAPONICA (DE MAN, 1892) MIGRATING TO UPSTREAM HABITATS IN THE SHIWAGI RIVULET, TOKUSHIMA PREFECTURE

• HAMANO Tatsuo

  Shimonoseki University of Fisheries

• HAYASHI Ken-Ichi

  Shimonoseki University of Fisheries

Bibliographic Information

Other Title

• 徳島県志和岐川に遡上するヤマトヌマエビの生態
• トクシマケン シワギガワ ニ ソジョウスル ヤマトヌマエビ ノ セイタイ

Abstract

The ecology of an atyid shrimp Caridina japonica was studied in the Shiwagi Rivulet. Yuki Town, Tokushima Pref. This species is amphidromous in nature. The juveniles migrate upstream from the sea exclusively during the night and can be seen climbing a vertical wall, where the rivulet water is trickling down. From field observation, rheotaxis seems, to be the most important orientation mechanism for the upstream migration of juveniles. The peak month of egg incubation was June. The mean duration of incubation was 40 days at 20℃ in aquaria. From these values and with known information on the duration of larval life, it was estimated that the period of upstream migration starts in August. Most males die within two years after metamorphosis, however, many females survive for more than two years.

Journal

• Researches on Crustasea

  Researches on Crustasea 21 (0), 1-13, 1992

  Carcinological Society of Japan

Keywords

• General Materials Science

Details

• CRID: 1390001206096060800
• NII Article ID: 110002698367
• NII Article ID: 10004772566
• NII Book ID: AN0008054X
• ISSN: 02873478
• ISSN: 24330108
• DOI: 10.18353/rcustacea.21.0_1
• NDL BIB ID: 3828230
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3828230
• Web Site: https://www.jstage.jst.go.jp/article/rcustacea/21/0/21_KJ00003289262/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed