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1 June 2000 LIFE HISTORY AND TROPHIC BASIS OF PRODUCTION OF THE MAYFLY CALLIBAETIS FLUCTUANS (WALSH) (EPHEMEROPTERA: BAETIDAE) IN A MITIGATED WETLAND, WEST VIRGINIA, USA
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Abstract

We determined the life history, secondary production, and trophic basis of production for Callibaetis fluctuans in a mitigated wetland at the Green Bottom Wildlife Management Area, Cabell County, West Virginia, USA. Quantitative benthic samples were collected from three sites covering a range of water depths and vegetation types from January to December 1994. Length-frequency histograms were constructed for each sample date, and secondary production was calculated using the size-frequency method. Foregut analyses were conducted seasonally to determine diet. Callibaetis fluctuans had a multivoltine life cycle with at least three cohorts. Fast larval growth occurred during the spring and fall, whereas an overwintering cohort had slower growth. Total annual production was 208.0 mg·m−2·yr−1 (AFDM) with a production-to-biomass ratio of 12.6. Amorphous detritus comprised >80% of the diet in all seasons and accounted for 70% of total production. To account for this production, C. fluctuans consumed 3675 mg·m−2·yr−1 of detritus. This is one of the first studies to provide production estimates for an aquatic insect in a permanently inundated wetland.

Brent R. Johnson, Donald C. Tarter, and John J. Hutchens "LIFE HISTORY AND TROPHIC BASIS OF PRODUCTION OF THE MAYFLY CALLIBAETIS FLUCTUANS (WALSH) (EPHEMEROPTERA: BAETIDAE) IN A MITIGATED WETLAND, WEST VIRGINIA, USA," Wetlands 20(2), (1 June 2000). https://doi.org/10.1672/0277-5212(2000)020[0397:LHATBO]2.0.CO;2
Received: 8 September 1999; Accepted: 1 February 2000; Published: 1 June 2000
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