Life History of a Multivoltine Mayfly, Tricorythodes minutus:11 an Example of the Effect of Temperature on the life Cycle2
- 15 November 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 71 (6) , 876-881
- https://doi.org/10.1093/aesa/71.6.876
Abstract
The life history of the mayfly Tricorythodes minutus Traver (Ephemeroptera: Tricorythidae) was investigated at 2 locations in Deep Creek, Curlew Valley, Idaho-Utah. One has a spring source and relatively constant temperature of 18°C whereas the other has a normal seasonal fluctuation in water temperature. T. minutus is multivoltine at the 1st station and bivoltine at the other. Eggs are ovoid, 125×146 μm, covered by raised reticulations, and have an adhesive disc at one end. Adult females carry up to 1500 eggs and deposit them in small clusters with each visit to the stream surface. First instars are 0.45 mm long and lack gills and opercula. Males have about 19 instars and females 23. Mating occurs in flight and females deposit eggs in riffle areas. Standing crop was variable, with maxima of 11,250 m−2 at the 1st station and 1400 m−2 at the 2nd.This publication has 0 references indexed in Scilit: