Lethal limits of high temperature for two crayfishes, the native species Cambaroides japonicus and the alien species Pacifastacus leniusculus in Japan

Kazuyoshi Nakata, Tatsuo Hamano, Ken Ichi Hayashi, Tadashi Kawai

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Lethal limits of high temperature were studied to clarify the effects on the survival of the endangered Japanese crayfish species Cambaroides japonicus and the alien species Pacifastacus leniusculus. After the acclimation period for 2 weeks at 16°C, the temperature was raised at a rate of 1°C per week. As a result, the ultimate upper lethal temperatures of C. japonicus and P. leniusculus were 27.0 and 31.1°C, respectively, and the lethal temperature for P. leniusculus was significantly higher than for C. japonicus. The natural distributions of these two species are discussed in terms of the temperature tolerance.

Original languageEnglish
Pages (from-to)763-767
Number of pages5
JournalFisheries science
Volume68
Issue number4
DOIs
Publication statusPublished - Aug 1 2002
Externally publishedYes

Keywords

  • Cambaroides japonicus
  • Crayfish
  • Distribution
  • Lethal temperature
  • Pacifastacus leniusculus
  • Tolerance

ASJC Scopus subject areas

  • Aquatic Science

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