Trophic Competition of Common Sculpin and Stone Loach with Juvenile Salmons of Gen. Salmo in Tributaries of the Onega Lake

2014 ◽  
Vol 50 (6) ◽  
pp. 32-40
Author(s):  
Yu. A. Shustov ◽  
I. A. Tyrkin ◽  
Ye. N. Rasputina
Keyword(s):  
Stone Loach ◽  
Onega Lake ◽  
Trophic Competition

Performance of a pool-and-weir fish pass for small bottom-dwelling freshwater fish species in a regulated lowland river

2007 ◽  
Vol 57 (4) ◽  
pp. 423-432 ◽  
Author(s):  
Evelien Maerten ◽  
Marcel Eens ◽  
Guy Knaepkens
Keyword(s):  
Freshwater Fish ◽  
Fish Species ◽  
Fish Assemblages ◽  
Regulated River ◽  
Lowland River ◽  
Stone Loach ◽  
Spined Loach ◽  
Freshwater Fish Species ◽  
Cottus Gobio ◽  
Fish Pass

AbstractAlthough small benthic freshwater fish species are an important biological component of fish assemblages and free instream movement is indispensable for their survival, they are often neglected in fish pass performance studies. In this study, a capture-mark-recapture approach was used to assess whether small bottom-dwelling species, including gudgeon (Gobio gobio), stone loach (Barbatula barbatula), spined loach (Cobitis taenia) and bullhead (Cottus gobio), were able to cross a pool-and-weir fish pass in a regulated lowland river. Some tagged individuals of stone loach (18%), gudgeon (7%) and spined loach (2%) managed to successfully ascend the fish pass under study, despite the fact that water velocity levels in the different overflows of the facility (between 0.55-1.22 m/s) exceeded the critical swimming speed of all three species. Although this suggests that a pool-and-weir fish pass is a able to facilitate upstream movement of some small benthic species in a regulated river, more detailed research incorporating advanced tagging and retrieving techniques is necessary.

Application of an in Situ Growth Model: Inferred Instance of Interspecific Trophic Competition between Anadromous Fishes of Prudhoe Bay, Alaska

1995 ◽  
Vol 124 (1) ◽  
pp. 55-69 ◽  
Author(s):  
Robert G. Fechhelm ◽  
William B. Griffiths ◽  
James D. Bryan ◽  
Benny J. Gallaway ◽  
William J. Wilson
Keyword(s):  
Growth Model ◽  
In Situ Growth ◽  
Prudhoe Bay ◽  
Trophic Competition
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