Migration of Fishes in Romanian Danube River (Nº 1)

Ciolac, A.

doi:10.15666/aeer/02143163

Cited by 20 publications

(19 citation statements)

References 3 publications

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“…Confidence intervals overlapping 1 indicate use in proportion to availability. neau and Scarnecchia 2002;Ciolac 2004). However, common carp spawning behavior was observed in both flowing and impounded areas of the Fox River.…”

Section: Discussionmentioning

confidence: 99%

“…In many systems, common carp congregate in shallow, vegetated areas during spring spawning, disperse during summer, and congregate again in large groups at overwintering sites (Johnsen and Hasler 1977;Otis and Weber 1982;Penne and Pierce 2008;Jones and Stuart 2009). Some studies have described distinct upstream spawning migrations (Rodriguez-Ruiz and Granado-Lorencio 1992;Bonneau and Scarnecchia 2002;Ciolac 2004), whereas others have reported that common carp do not migrate and only exhibit localized movements (Reynolds 1983;Lubinski et al 1986). Local habitat characteristics may influence the movement patterns of common carp, with movements being greater in systems where critical habitats (e.g., spawning and overwintering areas) are distantly separated (Northcote 1984;Schlosser 1991).…”

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confidence: 99%

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Common Carp Distribution, Movements, and Habitat Use in a River Impounded by Multiple Low‐Head Dams

Butler¹,

Wahl²

2010

Trans Am Fish Soc

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The common carp Cyprinus carpio is an introduced species that is abundant in many impounded rivers. We assessed habitat conditions and common carp abundance in three flowing sites and three impounded sites of the Fox River, Illinois, to examine factors that influence the success of common carp in these systems. Radiotelemetry was used to determine long-term movement and habitat use patterns of common carp among flowing and impounded areas. Impounded areas were wider and deeper than flowing areas and had lower current velocities, smaller substrates, and lower abundances of cover. Common carp were found at all sites during summer, with catch rates being similar between flowing and impounded areas. The proportion of the fish assemblage consisting of common carp was similar between flowing and impounded areas during two of the study years but was higher in impounded areas than in flowing areas during the other two years. Radio-tagged common carp displayed a variety of movement patterns but used impounded areas most frequently during all seasons. Many common carp were always located in impounded areas, but some individuals moved upstream into flowing areas in spring and summer and returned to impounded areas by fall. Common carp positively selected for intermediate depths and low current velocities. Few consistent relationships were apparent in the use of substrate categories, but common carp selected most strongly for wood cover. Management activities targeting common carp should account for movements of this species among different habitat types and should focus on specific aspects of common carp life history. Dam removal or modification may also lead to declines in common carp abundance in some rivers.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Common Carp Distribution, Movements, and Habitat Use in a River Impounded by Multiple Low‐Head Dams

Butler¹,

Wahl²

2010

Trans Am Fish Soc

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“…Having over‐wintered in deep, slow‐moving areas of the main channel, S. glanis move at the end of March–April, when temperatures are 8–10 °C (Berg 1949; Shikhshabekov 1978) undertaking short‐distance migrations upstream to spawning grounds (Lelek 1987). In the lower River Danube, this migration is reported to take place in February and March at water temperatures of 4–6 °C (Ciolac 2004). In Central Europe, this migration generally takes place from the end of March to the beginning of April and in Eastern Europe, from the end of May until June.…”

Section: Reproductionmentioning

confidence: 99%

Voracious invader or benign feline? A review of the environmental biology of European catfish Silurus glanis in its native and introduced ranges*

et al. 2009

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A popular species for food and sport, the European catfish (Silurus glanis) is well-studied in its native range, but little studied in its introduced range. Silurus glanis is the largestbodied freshwater fish of Europe and is historically known to take a wide range of food items including human remains. As a result of its piscivorous diet, S. glanis is assumed to be an invasive fish species presenting a risk to native species and ecosystems. To assess the potential risks of S. glanis introductions, published and 'grey' literature on the species' environmental biology (but not aquaculture) was extensively reviewed. Silurus glanis appears well adapted to, and sufficiently robust for, translocation and introduction outside its native range. A nest-guarding species, S. glanis is long-lived, rather sedentary and produces relatively fewer eggs per body mass than many fish species. It appears to establish relatively easily, although more so in warmer (i.e. Mediterranean) than in northern countries (e.g. Belgium, UK). Telemetry data suggest that dispersal is linked to flooding/spates and human translation of the species. Potential impacts in its introduced European range include disease transmission, hybridization (in Greece with native endemic Aristotle's catfish [Silurus aristotelis]), predation on native species and possibly the modification of food web structure in some regions. However, S. glanis has also been reported (France, Spain, Turkmenistan) to prey intensively on other non-native species and in its native Germany to be a poor biomanipulation tool for top-down predation of zooplanktivorous fishes. As such, S. glanis is unlikely to exert trophic pressure on native fishes except in circumstances where other human impacts are already in force. In summary, virtually all aspects of the environmental biology of introduced S. glanis require further study to determine the potential risks of its introduction to novel environments.

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“…Alosa pontica is very sensitive to water temperature, water turbidity, and the amplitude of water level oscillations. High turbidity or low water levels have a strong negative impact on migration (Banarescu 1964;Ciolac 2004). There is an extremely interesting detail about this species: although not large in size, by migration time it becomes extremely abundant, making it economically very attractive.…”

Section: Family Clupeidaementioning

confidence: 99%

“…The density and dispersal of the carp population in the Danube depends on the way migration for reproduction occurs in relation to water level (floods) and temperature, which must be as high as 12-15˚C, usually by May. It returns to the main river once the eggs have been laid in the flooded area (Ciolac 2004).…”

Section: Family Cyprinidaementioning

confidence: 99%

Mesolithic fish and fishermen of the Lower Danube (Iron Gates)

Dinu

2010

Doc. praeh.

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This study analyzes the importance of fishing as part of the survival strategies of the Mesolithic and Early Neolithic groups of the Danube Iron Gates. It considers the species of fish present in the archaeological record of the Iron Gates sites, ecology, and possible fishing tools and techniques, in order to determine if the quantities caught during favorable seasons could have also insured food reserves for the winter. The author concludes that the presence of large species like sturgeon may be misleading with regard to how intensively these fish were caught, and that besides common species such as carp and catfish, the bulk of the harvest was mainly of smaller species that had fewer chances of being well preserved in the archaeological record.

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Migration of Fishes in Romanian Danube River (Nº 1)

Cited by 20 publications

References 3 publications

Common Carp Distribution, Movements, and Habitat Use in a River Impounded by Multiple Low‐Head Dams

Common Carp Distribution, Movements, and Habitat Use in a River Impounded by Multiple Low‐Head Dams

Voracious invader or benign feline? A review of the environmental biology of European catfish Silurus glanis in its native and introduced ranges*

Mesolithic fish and fishermen of the Lower Danube (Iron Gates)

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