Croissance et reproduction de l'omble-chevalier,Salvelinus alpinus (L.), dans le lac de Neuchâtel (Suisse)

Rubin, Par Jean-François; Büttiker, B.

doi:10.1007/bf02540379

Cited by 10 publications

(9 citation statements)

References 5 publications

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“…Even when considering the 90% credible interval of 3400–10 600 years bp , it seems that C. gobio expanded on the Swiss Rhine river system later than previously thought. This result is at odds with previous studies on salmonid species (Steinmann 1951; Rubin 1990; Largiadèr et al . 1996) and with a recent C. gobio study (Vonlanthen et al .…”

Section: Discussioncontrasting

confidence: 95%

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Colonization history of the Swiss Rhine basin by the bullhead (Cottus gobio): inference under a Bayesian spatially explicit framework

et al. 2008

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The present distribution of freshwater fish in the Alpine region has been strongly affected by colonization events occurring after the last glacial maximum (LGM), some 20,000 years ago. We use here a spatially explicit simulation framework to model and better understand their colonization dynamics in the Swiss Rhine basin. This approach is applied to the European bullhead (Cottus gobio), which is an ideal model organism to study fish past demographic processes since it has not been managed by humans. The molecular diversity of eight sampled populations is simulated and compared to observed data at six microsatellite loci under an approximate Bayesian computation framework to estimate the parameters of the colonization process. Our demographic estimates fit well with current knowledge about the biology of this species, but they suggest that the Swiss Rhine basin was colonized very recently, after the Younger Dryas some 6600 years ago. We discuss the implication of this result, as well as the strengths and limits of the spatially explicit approach coupled to the approximate Bayesian computation framework.

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Section: Discussioncontrasting

confidence: 95%

“…2002; Behrmann‐Godel et al . 2004) and between the Rhine and Rhône river systems in the area of Lake Geneva (Steinmann 1951; Rubin 1990; Largiadèr et al . 1996; Vonlanthen et al .…”

Section: Discussionmentioning

confidence: 99%

Colonization history of the Swiss Rhine basin by the bullhead (Cottus gobio): inference under a Bayesian spatially explicit framework

et al. 2008

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“…Consequently, the Lake Geneva area was most likely recolonized by fish after the retreat of this glacier while fish populations in the Belfort region were likely able to survive with minimum displacement during the same period. This would also support the previous hypotheses of such a crossing into Lake Geneva by other fish species like whitefish, brown trout, and arctic charr (Steinmann 1951; Rubin 1990; Largiader et al . 1996).…”

Section: Discussionsupporting

confidence: 90%

Genetic analysis of potential postglacial watershed crossings in Central Europe by the bullhead (Cottus gobioL.)

et al. 2007

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Natural colonizations across watersheds have been frequently proposed to explain the present distributions of many freshwater fish species. However, detailed studies of such potential watershed crossings are still missing. Here, we investigated potential postglacial watershed crossings of the widely distributed European bullhead (Cottus gobio L.) in two different areas along the Rhine-Rhône watershed using detailed genetic analysis. The main advantage of studying bullheads vs. other freshwater fish species is that their distribution has been lightly influenced by human activities and as such, interpretations of colonization history are not confounded by artificial transplantations. The genetic analyses of eight microsatellite loci revealed strong genetic similarities between populations of both sides of the Rhine-Rhône watershed in the Lake Geneva area, giving strong evidence for a natural watershed crossing of bullheads from the upper Rhine drainage into the Rhône drainage in the Lake Geneva area likely facilitated by the retreat of the glaciers after the last glacial maximum some 20,000 years ago. Populations from the Lake Geneva basin were genetically more similar to populations from across the watershed in the upper Rhine drainage than to populations further downstream in the lower Rhône. In contrast, populations from Belfort, an area, which was not covered by ice during the last glacial maximum, showed strong genetic differentiation between populations of the upper Rhine and Rhône drainages. Based on our results on the bullhead, we propose that glacial retreat may have eased the dispersal of numerous European freshwater fish species across several geological boundaries.

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“…The methods employed were unsuitable for detecting deepwater spawning sites, which have been found in large, deep lakes elsewhere (Frost 1965; Rubin & Buttiker 1987). Our observations indicated that fine sediments always covered substrates at depths >1.5 m in the study lakes; however, it is possible that deepwater springs could maintain sediment‐free areas (e.g., Blanchfield & Ridgway 1997) at depths below our limit of observation.…”

Section: Discussionmentioning

confidence: 99%

Littoral spawning habitats of three southern Arctic charr (Salvelinus alpinus L.) populations

Low

Igoe

Davenport

et al. 2011

Ecology of Freshwater Fish

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Arctic charr populations in southern latitudes are nonmigratory, with all life‐stages limited to freshwater lakes and in‐ or out‐flowing tributaries. Although many of these populations are reported to also spawn in lake littorals, little is known about the physical characteristics of putative spawning grounds. A total of 23 discrete spawning sites within three Irish lakes were located by fyke netting of spawning adults and snorkelling in littoral habitats. Spawning sites were found to be long, narrow strips running parallel to the shore at a maximum depth of 124 cm. Spawning sites were limited to areas of coarse mineral substrate with an adequate (c. 8 cm) depth of clean interstitial spaces. In individual lakes, combined areas of spawning sites made up 0.4–0.7% of available littoral. Egg densities varied considerably between sites (33–900·eggs m−2) and were significantly correlated with gradient and width of spawning sites. No evidence of redd digging was found. The shallow, localised and restricted nature of spawning grounds makes such populations vulnerable to anthropogenically induced postoviposition changes in surface water level, eutrophication processes such as increased lake sedimentation and elevated nutrient status.

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Croissance et reproduction de l'omble-chevalier,Salvelinus alpinus (L.), dans le lac de Neuchâtel (Suisse)

Cited by 10 publications

References 5 publications

Colonization history of the Swiss Rhine basin by the bullhead (Cottus gobio): inference under a Bayesian spatially explicit framework

Colonization history of the Swiss Rhine basin by the bullhead (Cottus gobio): inference under a Bayesian spatially explicit framework

Genetic analysis of potential postglacial watershed crossings in Central Europe by the bullhead (Cottus gobioL.)

Littoral spawning habitats of three southern Arctic charr (Salvelinus alpinus L.) populations

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