Spawning behaviour of taimen (<Emphasis Type="Italic">Hucho taimen</Emphasis>) from the Uur River,Northern Mongolia |
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Authors: | Manu Esteve David Gilroy Deborah Ann McLennan |
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Institution: | (1) Department of Ecology and Evolutionary Biology, University of Toronto, 25 Harbord St, Toronto, ON, M5S 3G5, Canada;(2) Center for Limnology, University of Wisconsin, 680 N Park Street, Madison, WI 53706, USA |
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Abstract: | This study presents the first observations of Hucho taimen spawning in the wild based on underwater video recordings. One pair of taimen was monitored during a 19 h period, supplemented
with visual observations from two other spawning pairs. We recorded two full spawning events performed in two different locations
separated by approximately 30 m. The absence of an established male hierarchy along a nesting female was the most important
difference between taimen and other salmonine breeding biology. Taimen spawning, based on our observations, is a single pair
event. The male prevented the approach of other males by launching intense attacks that extended for several meters away from
the redd. Our data suggests that taimen females, differently from other salmonines, do not cover their eggs immediately after
having spawned but rest for a variable number of minutes before covering them. |
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Keywords: | Hucho taimen Underwater video Spawning act Salmonines |
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