Thermal avoidance in inanga,Galaxias maculatus(Jenyns), from the Waikato River, New Zealand
- 1 June 1991
- journal article
- research article
- Published by Taylor & Francis in New Zealand Journal of Marine and Freshwater Research
- Vol. 25 (2) , 177-180
- https://doi.org/10.1080/00288330.1991.9516468
Abstract
Temperature avoidance behaviour of inanga, Galaxias maculatus, was studied in the laboratory using a two‐choice tank. The final preferred temperature of inanga is about 20°C but fish acclimatised to cooler temperatures (15 and 17°Q prefer warmer waters (up to 23 and 26°C, respectively). Fish acclimatised to temperatures of 15,17, and 20°C showed total avoidance at 29.5,31, and 31.5°C, respectively. Water temperature therefore is an important factor influencing upstream migration and distribution of inanga and thermal discharges can be disruptive.Keywords
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