Emergence of blackflies (Diptera: Simuliidae) from a small forested stream in Ontario |
| |
Authors: | M. P. Singh S. M. Smith |
| |
Affiliation: | (1) Department of Biology, University of Waterloo, N2L 3G1 Waterloo, Ontario, Canada |
| |
Abstract: | Three species of blackflies were found in emergence-trap samples taken overa period of 8 months from a second-order, forested, cold-stenothermal stream in southern Ontario. The emergence phenologies of the two common species, Prosimulium mixtum and Stegopterna mutata, are described and compared with their phenologies in other streams in North America. Hypotheses are presented for the poor faunal diversity and prolonged emergence of the two species in the stream studied. Emergence data are used to describe the pupal distribution in the stream.Wing-length measurements showed a distinct dimorphism in P. mixtum: females were larger than males. Adult size (except of P. mixtum females) varied among sampling sites in the stream and, in the case of S. mutata, this variation was time dependent. |
| |
Keywords: | blackflies Simuliidae forested streams emergence distribution wing-length North America |
本文献已被 SpringerLink 等数据库收录! |
|