Marine food and diet overlap of co-occurring Arctic charr Salvelinus alpinus (L.), brown trout Salmo trutta L. and Atlantic salmon S. salar L. off Senja, N. Norway

Polar Biology ◽  
1987 ◽  
Vol 7 (3) ◽  
pp. 173-177 ◽  
Author(s):  
Sidsel Gr�nvik ◽  
Anders Klemetsen
Keyword(s):  
Atlantic Salmon ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Diet Overlap ◽  
Brown Trout Salmo Trutta ◽  
Marine Food

Resource Partitioning and Niche Shift in Arctic Charr Salvelinus alpinus and Brown Trout Salmo trutta

10.2307/5420 ◽  
1991 ◽  
Vol 60 (3) ◽  
pp. 895 ◽  
Author(s):  
A. Langeland ◽  
J.H. L'Abee-Lund ◽  
B. Jonsson ◽  
N. Jonsson
Keyword(s):  
Brown Trout ◽  
Resource Partitioning ◽  
Salmo Trutta ◽  
Salvelinus Alpinus ◽  
Arctic Charr ◽  
Niche Shift ◽  
Brown Trout Salmo Trutta

Temperature Requirements in Atlantic Salmon (Salmo salar), Brown Trout (Salmo trutta), and Arctic Char (Salvelinus alpinus) from Hatching to Initial Feeding Compared with Geographic Distribution

1989 ◽  
Vol 46 (5) ◽  
pp. 786-789 ◽  
Author(s):  
Arne J. Jensen ◽  
Bjørn O. Johnsen ◽  
Laila Saksgård
Keyword(s):  
Atlantic Salmon ◽  
Salmo Salar ◽  
Geographic Distribution ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Development Time ◽  
Salvelinus Alpinus ◽  
Arctic Char ◽  
Atlantic Salmon Salmo Salar ◽  
Brown Trout Salmo Trutta

Development time at different temperatures from hatching to 50% feeding was studied in Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) alevins. Live animals were used as food. In both species the development time decreased with increasing temperature, and these relationships were described by power curves. The results were compared with similar data for Arctic char (Salvelinus alpinus). At temperatures above about 8 °C, the development time to 50% feeding was the same for all three species. However, at lower temperatures Atlantic salmon alevins needed more time to reach the stage of initial feeding than did Arctic char. Brown trout were intermediate. These results are in accordance with the known optimum temperature ranges for the three species and their geographic distribution.

Sign in / Sign up

Export Citation Format

Share Document