Influence of farm construction on the habitat of the eight-barbel loach, <i>Lefua echigonia</i> (Cypriniformes: Cobitidae)

• Hashimoto Miwa

  明治大学農学部　応用植物生態学研究室

• Kuramoto Noboru

  明治大学農学部　応用植物生態学研究室

Bibliographic Information

Other Title

• コイ目ドジョウ科ホトケドジョウの生息地に及ぼす農場建設の影響

Abstract

We investigated the habitat of the endangered Japanese eight-barbel loach, <i>Lefua echigonia</i> (Cypriniformes: Cobitidae). This fish inhabits a stream that adjoins a construction site on the university farm. The aim of this study was to document their occurrence and growth during and after construction. During construction, an accident occurred that led to the death of all the Japanese eight-barbel loaches due to the drainage of the stream. The results of the study confirm that there was no significant change in the population density of several investigated sections of the stream, even at the site of the accident. Moreover, the growth of the recaptured individuals was assessed using the mark-recapture method， and the effect of the accident was considered to be small. Despite the deterioration of water quality in the stream during construction, the fish were still expected to swim upstream from the river into the stream, because the habitat structure and continuity of the stream with the Misawa River were not lost. Therefore, it was possible for the stream to re-emerge as a habitat for the re-establishment of the Japanese eight-barbel loach.

Journal

• Natural History Report of Kanagawa

  Natural History Report of Kanagawa 2019 (40), 67-73, 2019

  Kanagawa Prefectural Museum of Natural History (Kanagawa Prefectural Museum)

Details

• CRID: 1390282752321587840
• NII Article ID: 130007699836
• DOI: 10.32225/nkpmnh.2019.40_67
• ISSN: 21896712
• ISSN: 03889009
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed