Variability in the growth rate of chub <i>Leuciscus cephalus</i> along a longitudinal river gradient

Tedesco, Pablo A.; Sagnes, Pierre; Laroche, Jean

doi:10.1111/j.1095-8649.2008.02134.x

Cited by 17 publications

(18 citation statements)

References 30 publications

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“…The juvenile growth of S. cephalus also significantly reduced with increasing latitude, with this consistent with Tedesco et al (2009) who suggested higher temperatures were coincident with faster chub growth rates in a study comparing 15 populations along a longitudinal river gradient. There was, however, no relationship between their back-calculated length at the last annulus and latitude, suggesting that latitude (and thus temperature) was a more important influence on their juvenile growth.…”

Section: Figuresupporting

confidence: 84%

Influences of environmental and chemical parameters on the spatial growth patterns of four riverine cyprinid fishes

Liu

Chen

Britton

2015

Knowl. Manag. Aquat. Ecosyst.

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Key-words:roach, chub, disturbance, somatic growth, environmental change Understanding intraspecific variability in fish somatic growth rates is important as growth is a key life history trait that plays a fundamental role in many biological and ecological processes. Here, the influence of environmental and chemical parameters was tested on intraspecific variability in growth rates of the cyprinid fishes roach Rutilus rutilus, chub Squalius cephalus and dace Leuciscus leuciscus across 13 rivers in England, and also compared with those for barbel Barbus barbus from the same rivers. Outputs indicated that growth rate responses to the parameters were species-specific, with more significant effects generally detected on juvenile growth than lifetime growth. For R. rutilus and S. cephalus, latitude (as a surrogate of temperature) was the most significant predictor of their growth rates, with growth rates decreasing as latitude increased. Contrary to prediction, aspects of degraded water quality accelerated the growth rates of these fishes, except in B. barbus, although concentrations of nitrogenous compounds were below toxicity thresholds. This emphasizes the ability of populations of these cyprinid fishes to tolerate some environmental disturbances and, in entirety, suggests that the intraspecific variability in the growth rates of these fishes is significantly influenced by abiotic parameters and their association with levels of anthropogenic disturbance. RÉSUMÉ

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Section: Figuresupporting

confidence: 84%

Influences of environmental and chemical parameters on the spatial growth patterns of four riverine cyprinid fishes

Liu

Chen

Britton

2015

Knowl. Manag. Aquat. Ecosyst.

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“…() suggesting that where species had expanding ranges, this was influenced more by changes in the seasonality of temperatures, whereas where ranges contract, it is due to the interaction of temperature change and alterations in precipitation patterns. Although it was unable to be tested further here, the range contraction of S. cephalus predicted under all climate change projections might relate to this interaction, given their natural distribution in more southern latitudes in Europe (Tedesco et al ., ), where air temperatures tend to be higher than for Great Britain. For G. gobio and L. leuciscus , predictions suggested some climate thresholds might exist, given their predicted expansions of climate space under low‐emission projections of climate space but constrictions under high emissions.…”

Section: Discussionmentioning

confidence: 95%

Shifts in the climate space of temperate cyprinid fishes due to climate change are coupled with altered body sizes and growth rates

Ruiz‐Navarro

Gillingham

Britton

2016

Global Change Biology

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Predictions of species responses to climate change often focus on distribution shifts, although responses can also include shifts in body sizes and population demographics. Here, shifts in the distributional ranges (‘climate space’), body sizes (as maximum theoretical body sizes, L∞) and growth rates (as rate at which L∞ is reached, K) were predicted for five fishes of the Cyprinidae family in a temperate region over eight climate change projections. Great Britain was the model area, and the model species were Rutilus rutilus, Leuciscus leuciscus, Squalius cephalus, Gobio gobio and Abramis brama. Ensemble models predicted that the species' climate spaces would shift in all modelled projections, with the most drastic changes occurring under high emissions; all range centroids shifted in a north‐westerly direction. Predicted climate space expanded for R. rutilus and A. brama, contracted for S. cephalus, and for L. leuciscus and G. gobio, expanded under low‐emission scenarios but contracted under high emissions, suggesting the presence of some climate‐distribution thresholds. For R. rutilus, A. brama, S. cephalus and G. gobio, shifts in their climate space were coupled with predicted shifts to significantly smaller maximum body sizes and/or faster growth rates, aligning strongly to aspects of temperature‐body size theory. These predicted shifts in L∞ and K had considerable consequences for size‐at‐age per species, suggesting substantial alterations in population age structures and abundances. Thus, when predicting climate change outcomes for species, outputs that couple shifts in climate space with altered body sizes and growth rates provide considerable insights into the population and community consequences, especially for species that cannot easily track their thermal niches.

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“…RDA-based variance-partitioning methods showed that environmental variables were in general more important than spatial ones in determining metacommunity structure. lakes, large rivers) (Tedesco, Sagnes & Laroche, 2009;Szaló ky, 2003;TE, pers. in time) in the relative role of spatial structuring (potentially dispersal limitation) and species sorting mechanisms may play in this metacommunity.…”

Section: Discussionmentioning

confidence: 99%

Temporal variability in the spatial and environmental determinants of functional metacommunity organization – stream fish in a human‐modified landscape

et al. 2012

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Summary 1. Quantifying the relative importance of environmental filtering versus regional spatial structuring has become an intensively studied area in the context of metacommunity ecology. However, most studies have evaluated the role of environmental and spatial processes using taxonomic data sets of single snapshot surveys. 2. Here, we examined temporal changes in patterns and possible processes behind the functional metacommunity organization of stream fishes in a human‐modified landscape. Specifically, we (i) studied general changes in the functional composition of fish assemblages among 40 wadeable stream sites during a 3‐year study period in the catchment area of Lake Balaton, Hungary, (ii) quantified the relative importance of spatial and environmental factors as determinants of metacommunity structure and (iii) examined temporal variability in the relative role of spatial and environmental processes for this metacommunity. 3. Partial triadic analysis showed that assemblages could be effectively ordered along a functional gradient from invertebrate consuming species dominated by the opportunistic life‐history strategy, to assemblages with a diverse array of functional attributes. The analysis also revealed that functional fish assemblage structure was moderately stable among the sites between the sampling periods. 4. Despite moderate stability, variance partitioning using redundancy analyses (RDA) showed considerable temporal variability in the contribution of environmental and spatial factors to this pattern. The analyses also showed that environmental variables were, in general, more important than spatial ones in determining metacommunity structure. Of these, natural environmental variables (e.g. altitude, velocity) proved to be more influential than human‐related effects (e.g. pond area, % inhabited area above the site, nutrient enrichment), even in this landscape with relatively low variation in altitude and stream size. 5. Pond area was, however, the most important human stressor variable that was positively associated with the abundance of non‐native species with diverse functional attributes. The temporal variability in the relative importance of environmental and spatial factors was probably shaped by the release of non‐native fish from fish ponds to the stream system during flood events. 6. To conclude, both spatial processes and environmental control shape the functional metacommunity organization of stream fish assemblages in human‐modified landscapes, but their importance can vary in time. We argue, therefore, that metacommunity studies should better consider temporal variability in the ecological mechanisms (e.g. dispersal limitation, species sorting) that determine the dynamics of landscape‐level community organization.

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Variability in the growth rate of chub Leuciscus cephalus along a longitudinal river gradient

Cited by 17 publications

References 30 publications

Influences of environmental and chemical parameters on the spatial growth patterns of four riverine cyprinid fishes

Influences of environmental and chemical parameters on the spatial growth patterns of four riverine cyprinid fishes

Shifts in the climate space of temperate cyprinid fishes due to climate change are coupled with altered body sizes and growth rates

Temporal variability in the spatial and environmental determinants of functional metacommunity organization – stream fish in a human‐modified landscape

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