The Population Density of Four Species of Freshwater Fish, Roach (Rutilus rutilus (L.)), Bleak (Alburnus alburnus (L.)), Dace (Leuciscus leuciscus (L.)) and Perch (Perca fluviatilis L.) in the River Thames at Reading

Williams, W. P.

doi:10.2307/2374

Cited by 54 publications

(40 citation statements)

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“…The constraints placed upon this dispersal by natural barriers and by artificial structures (weirs, sluices, locks etc) are not known but may be important . Williams (1965) noted that 75% of P fluviatilis in a 225-m section of the River Thames were resident there . However, Bruylants et al .…”

Section: Movements Of Adult Fishmentioning

confidence: 99%

Environmental requirements of European non-salmonid fish in rivers

Mann¹

1996

Hydrobiologia

121

110

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Section: Movements Of Adult Fishmentioning

confidence: 99%

Environmental requirements of European non-salmonid fish in rivers

Mann¹

1996

Hydrobiologia

121

110

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“…Sa bonne qualité alimentaire en fait un poisson recherché par les pêcheurs ; elle représente grâce à sa production élevée et sa petite taille, une proie de choix pour les carnassiers : sandre Lucioperca lucioperca, perche Perça fluviatilis et brochet Esox lucius (Williams 1965, Mackay & Mann 1969, Mathews 1971, Biro 1975.…”

Section: Introductionunclassified

Mise en évidence de différences de régime alimentaire dans une population d'ablettes Alburnus alburnus (L.) dans le lac de Sainte-Croix. Conséquences sur la croissance et la fécondité

1987

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The lake of St-Croix is a hydroelectric reservoir that has existed for about ten years.It is a warm, monomictic, oligotrophy lake where bleak were introduced soon after the constructi n of the reservoir.Stomach analyses indicated two kinds of feeding regimes according to the place of capture : in the central and outflow end of the lake, the bleak are essentially plankton feeders but also ingest debris and algae, whereas fish in the inflow end of the lake consume larvae and adults of aquatic insects, and their diet is strongly influenced by the River Verdon.The low density of plankton for most of the year is responsible for the poor growth and low fecundity of the fish (6000 ova per fish with length of 160 mm) in the centre and outflow end of the lake, whereas there is rapid growth and high fecundity (9400 ova per 160 mm) in the inflow end that is enriched by drift food from the River Verdon. Sexual maturity is attained at an age of 3 years by 90 % of both sexes, whatever the site of capture.

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“…G E R K I N G 1950, 1953, 1959STOTT, 1961STOTT, , 1967WILLIAMS 1965). Even though it can not, in principle, be excluded that during the experiments the activity of the fish was influenced by noise in the institute (banging doors in upper floors etc.…”

mentioning

confidence: 99%

Diurnal Variations in Swimming Activity of Rutilus rutilus (Cyprinidae) in a Group under Tank Conditions

Hammer¹,

Temming²,

Schubert³

1994

Intl Review of Hydrobiology

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Measurements of the swimming activity of a group of roach (12-19 cm TL, average) in a circular swimming chamber revealed two distinct activity patterns: a diurnal and a nocturnal one. The experiments showed that, having the choice, two factors stimulated the rhythmicity of the swimming behaviour of the fish, i.e. light intensity and the presence of a current field in the proximity of the fish. During daytime (bright light conditions) the fish moved into the current field and swam on average at 0.4 BL/s (resting swimming). The roach remained swimming at this speed even if no current field was established, however, then distributed evenly in the basin. By contrast, during night (dim light conditions) the fish predominantly chose the still water section but swam o n average with a cruising speed of 1.6 BL/s (night swimming). Accordingly, they did not seek the still water section for night swimming if the light was kept on. Then again, the fish distributed more or less evenly in the basin. The results support the hypothesis that the fish migrate during night-time and d o this preferably in still water.

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The Population Density of Four Species of Freshwater Fish, Roach (Rutilus rutilus (L.)), Bleak (Alburnus alburnus (L.)), Dace (Leuciscus leuciscus (L.)) and Perch (Perca fluviatilis L.) in the River Thames at Reading

Cited by 54 publications

References 0 publications

Environmental requirements of European non-salmonid fish in rivers

Environmental requirements of European non-salmonid fish in rivers

Mise en évidence de différences de régime alimentaire dans une population d'ablettes Alburnus alburnus (L.) dans le lac de Sainte-Croix. Conséquences sur la croissance et la fécondité

Diurnal Variations in Swimming Activity of Rutilus rutilus (Cyprinidae) in a Group under Tank Conditions

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