Habitat and food resource use of perch and roach in a deep mesotrophic reservoir: enough space to avoid competition?

Kahl, Uwe; Radke, Robert J.

doi:10.1111/j.1600-0633.2005.00120.x

Cited by 42 publications

(52 citation statements)

References 47 publications

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“…In artificially destratified, deep reservoirs fish inhabited the whole volume (Prchalová et al 2006). In the sharply stratified Římov Reservoir the highest fry density was usually observed in the surface layer as has also been observed for adult fish in other stratified lakes and reservoirs Järvalt et al 2005;Kahl & Radke 2006;Prchalová et al 2008).…”

Section: General Distribution Of Fry In the Reservoirsupporting

confidence: 71%

“…Roach in the Římov Reservoir thus preferred the surface water where the temperature was highest. The segregation of perch and roach along the temperature gradient in the pelagic zone was probably a result of selecting their optimal temperatures with respect to species-specific foraging efficiency and growth (Kahl & Radke 2006).…”

Section: Distribution Of Different Fry Species In the Reservoirmentioning

confidence: 99%

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Pelagic underyearling communities in a canyon-shaped reservoir in late summer

Jůza¹,

Vašek²,

Kubečka³

et al. 2009

J Limnol

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Section: General Distribution Of Fry In the Reservoirsupporting

confidence: 71%

Section: Distribution Of Different Fry Species In the Reservoirmentioning

confidence: 99%

Pelagic underyearling communities in a canyon-shaped reservoir in late summer

Jůza¹,

Vašek²,

Kubečka³

et al. 2009

J Limnol

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“…However, in situ studies of the vertical distribution of different species in lake with fishing nets or by echo sounding often show vertical spatial segregation, in which roach are positioned in higher water layers than those occupied by perch (Persson, 1986;Horppila et al, 2000). Kahl and Radke (2006) and Vasek et al (2009) found that roach occurs during the day in the layer just above the thermocline (3 to 4.5 m) and occupies the upper epilimnion (0−3 m) at night, whereas perch occupy the lower epilimnion and upper metalimnion (1.5−6 m). In Lake Annecy, the epilimnion is much thicker, approximately 15 m, and the water transparency is always greater than 6 m (as measured by a Secchi disk).…”

Section: > What δ 18 O Tell About the Thermal Distribution Of Lake Anmentioning

confidence: 99%

Life history traits of the fish community in Lake Annecy: evidence from the stable isotope composition of otoliths

Gerdeau×¹,

Dufour

2015

Knowl. Manag. Aquat. Ecosyst.

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Key-words: stable isotopes, oxygen, carbon, temperature, metabolismStable isotope analysis (SIA) of fish otoliths shows great potential for exploring the ecology of fish, but this method has not been applied to the study of lacustrine fish communities. Both sequential and whole-otolith SIAs were performed on six fish species of Lake Annecy and their results compared to muscle SIA. The first purpose of these investigations was to test the use of δ 18 O oto values for reconstructing fish thermal history and delimiting spatial distribution in a stratified lake. Comparison of speciesspecific fractionation equations and the general equation developed for freshwater fishes showed that the general one was the best suited for thermal estimation of Lake Annecy fishes and suggested that inter-specific differences or specific "vital effects" are not the only reason for apparent difference in fractionation. Thermal estimations based on SIA were consistent with descriptions of thermal habitats in the literature, except in the case of roach (Rutilus rutilus). Based on the current results, roach appears to live in a colder habitat than do perch (Perca fluviatilis). The high water transparency and thermal stratification of Lake Annecy could explain this distribution. Moreover, perch juveniles were found to live in two different thermal niches. This finding highlights the great plasticity of the species. Second, the potential use of δ 13 C oto values to reconstruct variation in diet and metabolism was assessed. The proportion of metabolic carbon (M) contributing to otolith carbon varies markedly among species. Comparison with δ 13 C muscle values shows no direct relationship between δ 13 C oto and diet at either the intra-individual or the inter-specific level. A strong linear relationship between either M or the isotopic offset between otolith and muscle (Δδ 13 C oto-muscle ) and δ 18 O oto values was found; this relationship reveals the dependence of M on the ambient temperature at which the species occurs. This relationship might be general and could be used to explore variation in fish metabolism in the future. RÉSUMÉTraits d'histoire de vie de la communauté de poissons dans le lac d'Annecy : l'apport de la composition en isotopes stables des otolithes Mots-clés :isotopes stables, L'analyse des isotopes stables (SIA) des otolithes de poissons montre un grand potentiel pour explorer l'écologie des poissons, mais cette méthode n'a encore jamais été appliquée à l'étude des communautés de poissons lacustres. pour reconstruire l'histoire thermique des poissons et préciser leur distribution spatiale dans ce lac stratifié. La comparaison des équations de fractionnement spécifiquement déve-loppées pour une espèce et l'équation générale pour les poissons d'eau douce a montré que l'équation générale était la plus adéquate pour l'estimation de l'histoire thermique des poissons du lac d'Annecy. Il est également suggéré que des différences inter-spécifiques ou « effets vitaux » spécifiques n'expliquent pas complètement la diffé...

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“…In our case, the two species are predator (P. fluviatilis) and prey (R. rutilus) (Turesson and Brönmark 2004) and they school in different aggregations. Furthermore, these two species exhibit different behaviors (Eklöv and Persson 1995;Kahl and Radke 2006) and physiology (Thorpe 1977). Eklöv and Persson (1995) have shown that juvenile roach form denser schools in the presence of predators, and have a higher swimming speed in the open water than juvenile perch.…”

Section: Discussionmentioning

confidence: 99%

Three‐dimensional internal spatial structure of young‐of‐the‐year pelagic freshwater fish provides evidence for the identification of fish school species

Guillard¹,

Fernandes

Laloë

et al. 2011

Limnology & Ocean Methods

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Active acoustic detection and characterization in three dimensions (3D) with multibeam sonars is a powerful technique for ecological studies of schooling fish. The alpine Lake Annecy provides ideal conditions for sampling fish with active acoustic methods: it has calm water, low species diversity, and the density of pelagic fish schools is high. We carried out investigations on the internal 3D morphological characteristics of young-of-theyear (Y-O-Y) pelagic fish schools, using high resolution multibeam sonar in the vertical plane. The objective was to discriminate between the two fish species that school in the lake: perch (Perca fluviatilis) and roach (Rutilus rutilus). To discriminate between these Y-O-Y fish species, we used only one characteristic of their internal spatial structure: the total number of vacuoles, defined as empty volumes inside the school, relative to the school volume. Two distinct linear relationships between school volume and the total number of vacuoles were determined. These two types were consistent with the proportions of the percentage occurrence of the two different species as obtained from pelagic trawl sampling in 2004. In 2008, perch was dominant (93%) in the lake, and only one relationship was detected: this relationship corresponded closely to the one in 2004 attributed to perch. Thus, we assume that the schooling behavior is a phenotypic expression that could be used for remote fish species identification.*Corresponding author: E-mail: patrice.brehmer@ird.fr AcknowledgmentsThis work was supported by the ANSON project (INRA, IRD, IFRE-MER), and we are grateful to the CRH (IRD, IFREMER, UM II; Sète) who provided facilities. The second survey was financially supported by the INRA EFPA department, under the grant 'Innovative Project.' The software used for sonar data extraction was developed during the EU project AVITIS. Special thanks to Yvon Guennegan (IFREMER; Sète) for his help during the first survey, Michel Colon for his help during the two surveys, and Nicolas Givaudan (INRA; Thonon) for previous data analyses. We also thank Marc Taquet (IFREMER; French Polynesia) who attempted to identify species by scuba diving during the 2008 survey. Finally, we are grateful to Keith Mutch of Marine Scotland for producing the 3D graphic.

show abstract

Habitat and food resource use of perch and roach in a deep mesotrophic reservoir: enough space to avoid competition?

Cited by 42 publications

References 47 publications

Pelagic underyearling communities in a canyon-shaped reservoir in late summer

Pelagic underyearling communities in a canyon-shaped reservoir in late summer

Life history traits of the fish community in Lake Annecy: evidence from the stable isotope composition of otoliths

Three‐dimensional internal spatial structure of young‐of‐the‐year pelagic freshwater fish provides evidence for the identification of fish school species

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