Journal article
Seasonal differences in amounts of oviposition habitat and egg-laying by caddisflies in rivers with regulated versus unregulated flows
Handoko Wahjudi, William D Bovill, Andrew J Brooks, Barbara J Downes
Freshwater Biology | Wiley | Published : 2024
DOI: 10.1111/fwb.14236
Abstract
1. Few studies consider spatio-temporal variation in egg-laying for benthic insects in streams. However, such variation can have lasting effects on the numbers and distribution of offspring and subsquent life-cycle stages. For species that require specific egg-laying habitats, such as rocks that protrude from the water surface (emergent rocks, ER), densities of egg-laying habitat can affect densities of benthic eggs and even larvae for some species. For such species, changes in water levels alter the spatio-temporal distribution of ER and can affect densities of eggs and, potentially, larvae. Below dams, modified flow regimes may alter the temporal availability of ER. In this study we tested..
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Funding Acknowledgements
This research was supported by funding from the NSW Department of Planning and Environment-Water, the Commonwealth Government of Australia and University of Melbourne. We are indebted to Sarah Wahjudi and Alice Kent who were soldiers during fieldwork. Chandra Jayasuriya kindly provided cartographic assistance, and Richard Marchant provided site information for the Murrumbidgee and Goodradigbee rivers. We also are grateful to Jill Lancaster for providing expertise on photographing egg masses and preparing eggs for genetic identification. Open access publishing facilitated by The University of Melbourne, as part of the Wiley - The University of Melbourne agreement via the Council of Australian University Librarians.