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A preliminary investigation of spawning migrations of grayling in a small stream as determined by radio-tracking
Parkinson, Denis; Philippart, Jean-Claude; Baras, Etienne
1999In Journal of Fish Biology, 55, p. 172-182
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Keywords :
freshwater fish, spawning, migration; homing, home range; Thymallus , telemetry
Abstract :
[en] Adult grayling Thymallus thymallus migrated from 230 to 4980 m up the Aisne stream, Belgium, to spawn between 18 and 29 March, under decreasing floods, increasing temperature and low turbidity.Males (n=4) arrived on spawning grounds several days earlier than females (n=2), stayed there longer (10-19 v. 2-3 days), and occupied a single ground each, whereas females moved between several places. After spawning, all grayling homed precisely into the pool-riffle sequences where they were tagged in late February, and remained here until late June. These observations indicate that resident grayling are far less mobile than autumn-spawning salmonids, and that the environmental factors triggering spawning migrations resemble more closely those of spring-spawning cyprinids than of other salmonids. The implications of these restricted mobility patterns are discussed within the scope of population structure, and impact of river management.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Parkinson, Denis;  Université de Liège - ULiège > Laboratory of Fish Demography and Aquaculture
Philippart, Jean-Claude ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale
Baras, Etienne;  Université de Liège - ULiège > Laboratory of Fish Demography and Aquaculture
Language :
English
Title :
A preliminary investigation of spawning migrations of grayling in a small stream as determined by radio-tracking
Publication date :
1999
Journal title :
Journal of Fish Biology
ISSN :
0022-1112
eISSN :
1095-8649
Publisher :
Blackwell, Oxford, United Kingdom
Volume :
55
Pages :
172-182
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
MRW - Ministère de la Région wallonne [BE]
Commentary :
A printed version of the paper is available by mailing a demand to : jcphilippart@uliege.be
Available on ORBi :
since 12 November 2019

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