The status of the barbel, <i>Barbus barbus</i> (L.) (Teleostei, Cyprinidae), in the United Kingdom

Wheeler, Alwyne; Jordan, D. R.

doi:10.1111/j.1095-8649.1990.tb05870.x

Cited by 29 publications

(56 citation statements)

References 4 publications

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“…River regulation has been identified as a major threat to barbel populations (Pilcher et al, 2004), with compounding adverse effects of elevated nutrient levels on the species' morphology (Tyler and Everett, 1993), physiology (Peňáz et al, 2005) and migratory behaviour (Lucas and Frear, 1997;Vilizzi et al, 2006). This contrasts with earlier, more optimistic assessments that suggested that B. barbus numbers were on the increase (Wheeler and Jordan, 1990). Thus, information on population size structure and growth is needed for rivers where B. barbus stocks are thought to be in decline so as to inform environmental managers in the formulation of habitat enhancement/rehabilitation and re-stocking strategies that aim to conserve the populations and increase the related angling amenity Pegg and Britton, 2011).…”

Section: Introductioncontrasting

confidence: 43%

“…Increasingly threatened within its native range (Peňáz et al, 2003), the IUCN status of B. barbus therefore carries the caveat of being "locally threatened by water pollution and river regulation". In the UK, where B. barbus is native to eastern rivers between Yorkshire and the Thames (Wheeler and Jordan, 1990), declining population densities have been reported for some of the more urbanised rivers, including the River Lee, Hertfordshire (Pilcher and Copp, 1997;Watkins et al, 1997). River regulation has been identified as a major threat to barbel populations (Pilcher et al, 2004), with compounding adverse effects of elevated nutrient levels on the species' morphology (Tyler and Everett, 1993), physiology (Peňáz et al, 2005) and migratory behaviour (Lucas and Frear, 1997;Vilizzi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Age and growth of European barbelBarbus barbus(Cyprinidae) in the small, mesotrophic River Lee and relative to other populations in England

Vilizzi

Copp

Britton

2013

Knowl. Managt. Aquatic Ecosyst.

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Key-words:habitat, conservation, scale ageing, recruitment Suspected of being in decline, the European barbel Barbus barbus population of the River Lee, a heavily-modified river in South East England, has been the subject of investigations to identify factors associated with perceived population decreases. Population surveys between 1995 and 1999 captured a total of 912 individuals, and standard length (SL) frequency analyses between years suggested that the population decline was not related to juvenile recruitment but rather to a recruitment bottleneck in fish 300-340 mm SL. This bottleneck probably results from insufficient available habitat suitable to this size class. Of the sampled fish, scales were removed from 764 and were used in a scale ageing exercise among three researchers. Analyses of their independent age estimates revealed variable interpretations, which arose from uncertainties relating to the difficulty of analysing scale patterns from relatively large, slow-growing fish. Nevertheless, error was within published acceptable margins, and age estimates revealed B. barbus in the river to age 10 years, lower than in many UK rivers. The SL-at-age growth curve was characterised by very fast growth in the initial years of life. Thus, the causal factors in the decline of this B. barbus population appear to have been in the adult life-stage habitat and were likely related to the loss of longitudinal connectivity, mainly due to the presence of water retention structures. River and aquatic ecosystem remediation strategies should therefore focus on enhancing longitudinal connectivity in conjunction with the ongoing improvement of water quality and ecosystem integrity. Mots-clés :habitat, conservation, scalimétrie, recrutement Soupçonnée d'être en déclin, la population de barbeau européen Barbus barbus de la rivière Lee, une rivière fortement modifiée dans le Sud Est de l'Angleterre, a fait l'objet d'investigations pour identifier les facteurs associés à la diminution ressentie de la population. Le suivi de population entre 1995 et 1999 a permis la capture de 912 poissons, et l'analyse des fréquences de longueur standard (SL) entre années suggère que le déclin de la population n'était pas lié au recrutement des juvéniles, mais plutôt à un goulot d'étranglement du recrutement chez les poissons de 300-340 mm SL. Ce goulot d'étranglement résulte probablement d'une insuffisance de l'habitat disponible approprié pour cette classe de taille.

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Section: Introductioncontrasting

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Age and growth of European barbelBarbus barbus(Cyprinidae) in the small, mesotrophic River Lee and relative to other populations in England

Vilizzi

Copp

Britton

2013

Knowl. Managt. Aquatic Ecosyst.

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confidence: 99%

“…A strong example is the European barbel Barbus barbus where, in Britain, this cyprinid fish is only indigenous to eastern flowing rivers, but has now been introduced for angling into numerous rivers in their nonindigenous range (Wheeler and Jordan, 1990;Antognazza et al, 2016). In the River Severn, western England, 509 adult fish were introduced in 1956 for fishery enhancement (Wheeler and Jordan, 1990). These fish established and dispersed throughout the middle and lower river, with reports in the 1970s of their capture by anglers in the River Teme, a major tributary of the Severn (Hunt and Jones, 1975;Wheeler and Jordan, 1990;Antognazza et al, 2016;Fig.…”

mentioning

confidence: 99%

“…In the River Severn, western England, 509 adult fish were introduced in 1956 for fishery enhancement (Wheeler and Jordan, 1990). These fish established and dispersed throughout the middle and lower river, with reports in the 1970s of their capture by anglers in the River Teme, a major tributary of the Severn (Hunt and Jones, 1975;Wheeler and Jordan, 1990;Antognazza et al, 2016;Fig. 1).…”

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Spatial variability in the growth of invasive European barbel Barbus barbus in the River Severn basin, revealed using anglers as citizen scientists

Trigo

Roberts

Britton

2017

Knowl. Manag. Aquat. Ecosyst.

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-Life history trait analyses of non-native fishes help identify how novel populations respond to different habitat typologies. Here, using electric fishing and anglers as citizen scientists, scales were collected from the invasive barbel Barbus barbus population from four reaches of the River Severn and Teme, western England. Angler samples were biased towards larger fish, with the smallest fish captured being 410 mm, whereas electric fishing sampled fish down to 60 mm. Scale ageing revealed fish present to over 20 years old in both rivers. Juvenile growth rates were similar across all reaches. Lengths at the last annulus and L infinity of the von Bertalanffy growth model revealed, however, that fish grew to significantly larger body sizes in a relatively deep and highly impounded reach of the River Severn. Anglers thus supplemented the scale collection and although samples remained limited in number, they provided considerable insights into the spatial demographics of this invasive B. barbus population.Keywords: recreational fishery / invasion / non-indigenous / somatic growth Résumé -Variabilité spatiale de la croissance du barbeau européen invasif Barbus barbus dans le bassin de la rivière Severn, révélé en utilisant des pêcheurs comme des scientifiques citoyens. Les analyses des traits d'histoire de la vie de poissons non indigènes aident à identifier comment les populations nouvelles répondent à différentes typologies d'habitat. Ici, à l'aide de la pêche électrique et des pêcheurs à la ligne en tant que citoyens scientifiques, des écailles ont été recueillies sur des barbeaux, Barbus barbus, population envahissante de quatre tronçons des rivières Severn et Teme, dans l'ouest de l'Angleterre. Les échantillons des pêcheurs ont été orientés vers des poissons plus gros, le plus petit capturé étant de 410 mm, tandis que la pêche électrique a échantillonné des poissons jusqu'à 60 mm. La scalimétrie a révélé des poissons présents âgés de plus de 20 ans dans les deux rivières. Les taux de croissance des juvéniles étaient semblables dans tous les secteurs. Les longueurs au dernier annulus et le L infini du modèle de croissance de von Bertalanffy ont révélé, cependant, que le poisson atteint des tailles de corps significativement plus grandes dans un secteur relativement profond et fortement endigué de la rivière Severn. Les pêcheurs ont ainsi complété la collecte d'écailles et, bien que les échantillons soient restés limités en nombre, ils ont fourni des indications considérables sur la démographie spatiale de cette population invasive de B. barbus.

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Loss of genetic integrity and biological invasions result from stocking and introductions of Barbus barbus: insights from rivers in England

Antognazza

Andreou

Zaccara

et al. 2016

Ecology and Evolution

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Anthropogenic activities, including the intentional releases of fish for enhancing populations (stocking), are recognized as adversely impacting the adaptive potential of wild populations. Here, the genetic characteristics of European barbel Barbus barbus were investigated using 18 populations in England, where it is indigenous to eastern‐flowing rivers and where stocking has been used to enhance these populations. Invasive populations are also present in western‐flowing rivers following introductions of translocated fish. Two genetic clusters were evident in the indigenous range, centered on catchments in northeast and southeast England. However, stocking activities, including the release of hatchery‐reared fish, have significantly reduced the genetic differentiation across the majority of this range. In addition, in smaller indigenous rivers, populations appeared to mainly comprise fish of hatchery origin. In the nonindigenous range, genetic data largely aligned to historical stocking records, corroborating information that one particular river (Kennet) in southeast England was the original source of most invasive B. barbus in England. It is recommended that these genetic outputs inform management measures to either restore or maintain the original genetic diversity of the indigenous rivers, as this should help ensure populations can maintain their ability to adapt to changing environmental conditions. Where stocking is considered necessary, it is recommended that only broodstock from within the catchment is used.

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The status of the barbel, Barbus barbus (L.) (Teleostei, Cyprinidae), in the United Kingdom

Cited by 29 publications

References 4 publications

Age and growth of European barbelBarbus barbus(Cyprinidae) in the small, mesotrophic River Lee and relative to other populations in England

Age and growth of European barbelBarbus barbus(Cyprinidae) in the small, mesotrophic River Lee and relative to other populations in England

Spatial variability in the growth of invasive European barbel Barbus barbus in the River Severn basin, revealed using anglers as citizen scientists

Loss of genetic integrity and biological invasions result from stocking and introductions of Barbus barbus: insights from rivers in England

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