Advancing provision of multi-species fish passage: Behaviour of adult European eel (Anguilla anguilla) and brown trout (Salmo trutta) in response to accelerating flow

2011 ◽  
Vol 37 (12) ◽  
pp. 2018-2024 ◽  
Author(s):  
Iain J. Russon ◽  
Paul S. Kemp
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Anguilla Anguilla ◽  
Fish Passage ◽  
European Eel ◽  
Brown Trout Salmo Trutta ◽  
Accelerating Flow

Heavy Metal Contamination of European Eel (Anguilla anguilla) and Brown Trout (Salmo trutta) Caught in Wild Ecosystems in Spain

2004 ◽  
Vol 67 (10) ◽  
pp. 2332-2336 ◽  
Author(s):  
A. R. LINDE ◽  
S. SANCHEZ-GALAN ◽  
E. GARCIA-VAZQUEZ
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Heavy Metal Contamination ◽  
Anguilla Anguilla ◽  
Human Consumption ◽  
European Eel ◽  
High Metal Content ◽  
High Metal ◽  
Brown Trout Salmo Trutta ◽  
Hg Accumulation

In this study we analyzed the pattern of copper (Cu), cadmium (Cd), lead (Pb), and mercury (Hg) accumulation in liver (as a detoxifying organ) and muscle (as the most important tissue for human consumption) of brown trout (Salmo trutta) and European eel (Anguilla anguilla) caught in two wild Spanish rivers where both species are usually angled for human consumption. Cd, Pb, and Cu accumulated preferentially in the liver of both species. Hg accumulated both in the liver and muscle in brown trout, whereas it accumulated preferentially in muscle in European eel. Both high metal content and preferential accumulation of Hg in muscle suggest that European eel is more harmful than brown trout for human consumption.

Metallothionein and Heavy Metals in Brown Trout (Salmo trutta) and European Eel (Anguilla anguilla): A Comparative Study

1999 ◽  
Vol 44 (2) ◽  
pp. 168-173 ◽  
Author(s):  
A.R. Linde ◽  
S. Sánchez-Galán ◽  
D. Klein ◽  
E. García-Vázquez ◽  
K.H. Summer
Keyword(s):  
Heavy Metals ◽  
Comparative Study ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Anguilla Anguilla ◽  
European Eel ◽  
Brown Trout Salmo Trutta

Influence of baffles on upstream passage of brook trout and brown trout in an experimental box culvert

2019 ◽  
Vol 76 (1) ◽  
pp. 28-41 ◽  
Author(s):  
Jason M. Duguay ◽  
R.W. Jay Lacey ◽  
Theodore Castro-Santos
Keyword(s):  
Brown Trout ◽  
Brook Trout ◽  
Salmo Trutta ◽  
Salvelinus Fontinalis ◽  
Fish Passage ◽  
Maximum Distance ◽  
Brown Trout Salmo Trutta ◽  
And Performance ◽  
Box Culvert ◽  
Experimental Flume

There is much to learn about improving baffle designs to increase successful fish passage through culverts. A fish’s motivation to attempt entry into the culvert is essential. Upon entry, successful passage will largely depend on the physiological ability of the fish to navigate the entire culvert length. In this study, the motivation of brook trout (Salvelinus fontinalis (Mitchill, 1814)) and brown trout (Salmo trutta Linnaeus, 1758) to attempt ascent of an experimental flume, which mimics a roadway culvert left bare (smooth) or fitted with either spoiler or weir baffles, is assessed. Performance, measured as maximum distance of ascent within the flume, is also quantified. The bare flume was the most motivating for brook trout, and the weirs were most motivating for brown trout. As a rule, brown trout showed less motivation to stage attempts than brook trout, except within the weir baffle treatments. Performance was greatest in the weirs for smaller trout and in the spoiler baffles for larger trout. Our findings suggest that baffle form influences passage rates at road crossings in ways previously unknown and further stresses the importance of considering fish motivation and performance together when assessing the efficacy of baffle forms.

Richness and diversity of intestinal metazoan communities in brown trout Salmo trutta compared to those of eels Anguilla anguilla in their European heartlands

Parasitology ◽  
2000 ◽  
Vol 121 (1) ◽  
pp. 55-64 ◽  
Author(s):  
C. R. KENNEDY ◽  
R. A. HARTVIGSEN
Keyword(s):  
Community Structure ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Interspecific Interactions ◽  
Anguilla Anguilla ◽  
Intestinal Helminth ◽  
Published Data ◽  
European Eel ◽  
Character Species ◽  
Helminth Communities

The hypothesis that intestinal helminth communities in freshwater brown trout are dissimilar in composition and structure to those in the European eel was tested by an analysis of component communities from 72 localities and of infracommunities from 34 localities in the British Isles and Norway. Derived indices were then compared with published data from eels. Composition of helminth communities differed considerably between the two hosts as a group of 4 species occurred commonly in trout and so gave greater predictability to the community composition. These 4 species were trout specialists and in 97% of the localities a trout specialist dominated the community rather than a generalist acanthocephalan as is typical for eels. By contrast all measures of community structure and indices of richness and diversity indicated that helminth communities in trout were isolationist in character, species poor and exhibited low diversity at both component and infracommunity levels. All values of indices for trout helminth communities were strikingly similar to those obtained from eels. Evidence of interspecific interactions within the trout helminth communities and a limit of 4 to infracommunity species richness further enhanced the similarities and suggested a common determinant of community structure. The hypothesis was thus supported in respect of species composition but refuted in respect of community structure.

Sign in / Sign up

Export Citation Format

Share Document