Growth rate during early life affects sexual differentiation in roach (Rutilus rutilus)

A small polyhumic lake inhabited by northern pike (Esox lucius), burbot (Lota lota), perch (Perca fluviatilis), roach (Rutilus rutilus), and eel (Anguilla anguilla) was fished intensively during spring 1984 and 1985 to lower the high mercury levels in the top predator, northern pike. A total catch of 29.5 kg∙ha−1 (74% roach) was removed which represented about 50% of the total fish biomass. Mercury concentrations in burbot, large pike, and small roach had decreased by 1987 and 1988, but increased in young pike and some perch. Northern pike had the clearest increase in growth rate, while that of perch and roach levelled off within 3 yr at the prefishing level. Only a small increase in growth rate of burbot occurred. The yearly accumulation of mercury in northern pike remained constant, and the decrease in [Hg] was apparently due to growth dilution. The decrease in [Hg] of burbot and roach is explained by a switch to a diet with lower [Hg] or a decrease in water methylmercury concentrations. The amount of methylmercury removed from the lake by fishing was equivalent to several years of calculated mercury methylation and accumulation in the fish. Overfishing may be a feasible means of lowering methylmercury levels in this type of oligotrophic lake.

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The effects of a change in the growth rate of roach, Rutilus rutilus (L.), on the biology of the fish tapeworm Ligula intestinalis (L.)

Journal of Fish Biology ◽

10.1111/j.1095-8649.1988.tb05447.x ◽

1988 ◽

Vol 33 (1) ◽

pp. 45-57 ◽

Cited By ~ 11

Author(s):

R. J. Wyatt ◽

C. R. Kennedy

Keyword(s):

Growth Rate ◽

Rutilus Rutilus ◽

Roach Rutilus Rutilus ◽

Ligula Intestinalis

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Factors Affecting the Shift in Predominance from Eurasian Perch (Perca fluviatilis) to Roach (Rutilus rutilus) in the Kličava Reservoir, Czechoslovakia

Journal of the Fisheries Research Board of Canada ◽

10.1139/f77-220 ◽

1977 ◽

Vol 34 (10) ◽

pp. 1571-1575 ◽

Cited By ~ 5

Author(s):

K. Pivnička ◽

M. Švátora

Keyword(s):

Growth Rate ◽

Sex Ratio ◽

Environmental Conditions ◽

Perca Fluviatilis ◽

Rutilus Rutilus ◽

Roach Rutilus Rutilus ◽

Eurasian Perch ◽

Factors Affecting ◽

Perch Perca Fluviatilis ◽

Marked Decline

A shift in predominance from Eurasian perch (Perca fluviatilis) to roach (Rutilus rutilus) in the Kličava Reservoir in 1964, 10 yr after filling, was attributed mainly to a marked decline in the ratio of female to male perch spawners. The ratio was about 1:4 for perch and unity for roach. Fecundity of perch was about 25% that of roach which, together with the decline in spawning females, probably contributed to smaller year-classes. The decline in growth rate of perch in response to increasing abundance was greater than that for roach. Under equal environmental conditions, roach is also more productive than perch. Key words: Percidae, Perca, Rutilus, Kličava Reservoir, Czechoslovakia, shift in predominance, fecundity, sex ratio, methodology, growth–abundance relationships

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17α-Ethinylestradiol (EE2) treatment of wild roach (Rutilus rutilus) during early life development disrupts expression of genes directly involved in the feedback cycle of estrogen

Comparative Biochemistry and Physiology Part C Toxicology & Pharmacology ◽

10.1016/j.cbpc.2015.12.002 ◽

2016 ◽

Vol 180 ◽

pp. 56-64 ◽

Cited By ~ 7

Author(s):

Lina Nikoleris ◽

Cecilia L. Hultin ◽

Per Hallgren ◽

Maria C. Hansson

Keyword(s):

Early Life ◽

Rutilus Rutilus ◽

Roach Rutilus Rutilus ◽

Feedback Cycle ◽

Expression Of Genes

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Growth Rate of 0+ Fish in Relation to Temperature, Body Size, and Food in Shallow Eutrophic Lake Tjeukemeer

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f94-054 ◽

1994 ◽

Vol 51 (3) ◽

pp. 516-526 ◽

Cited By ~ 39

Author(s):

W. M. Mooij ◽

E. H. R. R. Lammens ◽

W. L. T. Van Densen

Keyword(s):

Growth Rate ◽

Body Size ◽

Growth Model ◽

Perca Fluviatilis ◽

Rutilus Rutilus ◽

Eutrophic Lake ◽

Logistic Growth ◽

Model Parameters ◽

Roach Rutilus Rutilus ◽

Using Data

The growth rate of young-of-the-year of the six most abundant fish species (smelt (Osmerus eperlanus), pikeperch (Stizostedion lucioperca), perch (Perca fluviatilis), ruffe (Gymnocephalus cernua), bream (Abramis brama), and roach (Rutilus rutilus)) in Lake Tjeukemeer was predicted from water temperature using the model [Formula: see text]. For each species the model parameters were estimated using data from approximately 120 field observations of body size over a period of 13 yr; about 94% of the variance in body size could be explained by the model. The growth rate was correlated with temperature for all planktivorous species, except smelt. The relationship between growth rate and temperature was also significant for piscivorous pikeperch but not for benthivorous ruffe. These conclusions were corroborated by comparing the unexplained sum of squares of the temperature growth model with that of a temperature-neutral, logistic growth model. The abundance of food was not related to the temperature-corrected growth rate of planktivorous fishes, except in one year during which food conditions were extremely poor. We concluded that in most years the growth rate of 0+ planktivorous fish was not food limited. For piscivorous pikeperch, however, the variation in growth rate could be explained by the higher availability of smelt in warmer years.

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Growth of 0+ Roach (Rutilus rutilus) in Relation to Temperature and Size in a Shallow Eutrophic Lake: Comparison of Field and Laboratory Observations

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f90-110 ◽

1990 ◽

Vol 47 (5) ◽

pp. 960-967 ◽

Cited By ~ 34

Author(s):

W. M. Mooij ◽

O. F. R. van Tongeren

Keyword(s):

Growth Rate ◽

Growth Rates ◽

Food Supply ◽

Rutilus Rutilus ◽

Maximum Growth ◽

Eutrophic Lake ◽

Maximum Growth Rate ◽

Roach Rutilus Rutilus ◽

Different Temperatures ◽

Juvenile Roach

The growth rates of larval and juvenile roach (Rutilus rutilus) were measured in the laboratory at different temperatures under conditions of excessive food supply. Using these data, the maximum growth rate of 0+ roach in relation to size and water temperature could be adequately described with an equation of the type: dW/dt = amax∙Wb∙(T−c) (W = weight, T = temperature, t = time). Using this equation the growth of larval and juvenile roach in Tjeukemeer was predicted for 12 successive years. The predicted growth rates were about 20% lower than the observed growth rates. Reasons for this bias are discussed. The results indicate that food is not limiting growth of roach in Tjeukemeer.

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