Zobrazeno 1 - 9
of 9
pro vyhledávání: ''
Publikováno v:
Animal Behaviour. 72:941-949
Fish of the family Salmonidae (salmon, trout and charr) are famous for their ability to learn (‘imprint’) olfactory information as juveniles and to use those odour memories as adults to home to their natal site for reproduction years later. Howev
Publikováno v:
Animal Behaviour. 69:1037-1041
We compared the feeding performance and overt aggressive behaviour of two closely related salmonids occupying the same food patches. Foraging competition between pairs of Atlantic salmon, Salmo salar, and brown trout, Salmo trutta, in which trout wer
Autor:
Ole Kristian Berg, Gunnbjørn Bremset
Publikováno v:
Animal Behaviour. 58:1047-1059
This study, conducted in deep pools in three rivers, is the first to show a clear three-dimensional habitat segregation in size groups (equivalent to age groups) of juvenile Atlantic salmon, Salmo salar, and brown trout, S. trutta. Young-of-the-year
Autor:
Jörgen I. Johnsson
Publikováno v:
Animal Behaviour. 45:1219-1225
Abstract. In this study, the hypothesis that selection for large body size under relaxed predation pressure will increase the tendency of juvenile rainbow trout to forage under threat of predation was tested. In eight replicate groups of juvenile hat
Autor:
Ernest R. Keeley
Publikováno v:
Animal behaviour. 59(3)
I experimentally manipulated levels of food abundance and density of competitors to determine how these factors influence the territory size of juvenile steelhead trout, Oncorhynchus mykiss. Steelhead trout were held in artificial stream channels and
Development of behaviour in alevins of atlantic salmon, Salmo salar, and rainbow trout, S. gairdneri
Autor:
Peter A. Dill
Publikováno v:
Animal Behaviour. 25:116-121
The development of behaviour in Atlantic salmon (Salmo salar) and rainbow trout (S. gairdneri) in a gravel-free environment was observed from hatching to the age corresponding to 1 week after emergence at 15 °C (40 days). Records included changes in
Publikováno v:
Animal Behaviour. 35:901-911
Juvenile Atlantic salmon, Salmo salar, changed their foraging strategy markedly after a brief exposure to a model trout predator, in ways that reduced their conspicuousness and hence risk of being preyed upon. After seeing the predator, the salmon we
Autor:
Winifred E. Frost
Publikováno v:
Animal Behaviour. 11:74-82
1. 1. In Windermere the charr, Salvelinus willughbii , shows two populations which are separated from each other by the time and place of their spawning: (1) autumn spawners which breed in November-December, some on the lake shore and some in the inf
Autor:
Wen-hwa Kwain, Hugh R. McCrimmon
Publikováno v:
Animal behaviour. 15(1)
Summary Fingerling trout when exposed to the series of white light intensities over a uni-coloured bottom of either black or white were randomly distributed over the bottom. While yearling trout were similarly randomly distributed over a black backgr