Japanese Journal of Limnology (Rikusuigaku Zasshi)
Online ISSN : 1882-4897
Print ISSN : 0021-5104
ISSN-L : 0021-5104
Life history and production rate of Ephemera strigata (Ephemeroptera)
Kyuemon GOSE
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1970 Volume 31 Issue 1 Pages 21-26

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Abstract

1. Samples of Ephemera strigata larvae were taken monthly from May 1967 to June 1968 in the River Niu-gawa, Nara Prefecture to determine the production rate.
2. Ephemera strigata has one generation in a year.
3. The production rate was calculated after the formula proposed by Ricker (1946) and Allen (1949), B=KP. The rate was found to be ca. 4.25g/m2 in the pool of the river. The yearly turnover rate is 2.4.

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