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The water velocity preferences of Austrosimulium furiosum and Simulium ornatipes (Diptera: Simuliidae) larvae, and the implications for micro-habitat partitioning
Journal article   Peer reviewed

The water velocity preferences of Austrosimulium furiosum and Simulium ornatipes (Diptera: Simuliidae) larvae, and the implications for micro-habitat partitioning

P.A. Horne, G. Bennison and J. Davis
Hydrobiologia, Vol.230(1), pp.31-36
1992
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Abstract

The aquatic larvae of two simuliid species, Austrosimulium furiosum (Skuse) and Simulium ornatipes Skuse, which often occur together in Victorian streams, were shown in laboratory experiments to have preferences for different water velocities: larvae of A. furiosum preferred water velocities of 0.2-0.3 m s-1, and S. ornatipes preferred water velocities of 0.9-1.3 m s -1 . Final instar larvae of both species selected 'slow' water speeds of less than 0.25 m s -1 prior to pupation. Flow patterns around a cylinder in a laboratory stream were mapped, and the distribution of A. furiosum larvae within the wake, paired vortices and horseshoe vortex was recorded. Larvae selected areas with suitable water velocities and aligned with the flow, providing flow visualization of micro-current speed and direction. The potential for micro-habitat partitioning is discussed in relation to benthic sampling strategies.

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UN Sustainable Development Goals (SDGs)

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#14 Life Below Water
#15 Life on Land

Source: InCites

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Citation topics
3 Agriculture, Environment & Ecology
3.2 Marine Biology
3.2.62 Freshwater Fish Ecology
Web Of Science research areas
Marine & Freshwater Biology
ESI research areas
Plant & Animal Science
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