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Alburnus chalcoides (Güldenstädt, 1772)

Danube bleak
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Alburnus chalcoides
Picture by Naseka, A.M.


Turkey country information

Common names: Caspian shemaya, Tatlisu kolyoz baligi
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the European Black Sea watersheds, Anatolian Black Sea watersheds, Caspian Sea watersheds and Central Anatolian lake watersheds (Ref. 58342). Also Ref. 106151. Distributed in all rivers of the Black sea basin from Rezovska in the west to Coruh in the east and in lakes of the northwestern Anatolia. Probably spread further south in Western Turkey since it is also found at Aydin (Ref. 33550). Translocated to Akköy Dam Lake in 1969, Isparta Gölcük Lake in 1970-1971, Sarimsakli Dam Lake (Kayseri) in 1970-1975, Bayindir Dam Lake (Ankara) in 1971, Gölköy (Bolu) Lake in 1975. It has successfully maintained populations in these areas (Ref. 57271). Threatened by habitat loss, eutrophication/pollution and construction of weirs/dams in rivers. In Appendix III of the Bern Convention (protected fauna) and listed on Annex II of the EU Habitats Directive under the name Chalcalburnus chalcoides (Ref. 58342). Status of threat: Endangered (Ref. 58342). EurTurk.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tu.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bogutskaya, N.G., 1997
National Database: CLOMFOT

Common names from other countries

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Cypriniformes (Carps) > Leuciscidae (Minnows) > Leuciscinae
Etymology: Alburnus: From the city of Al Bura, where the fish was known (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce; estuarina bentopelágico; potamódromo (Ref. 51243).   Temperate; 5°C - 20°C (Ref. 12468); 61°N - 38°N, 9°E - 55°E

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Europe and Asia: Caspian (mostly western to southern coast, rarely found in Ural and Volga). Populations from Aral Sea basin might belong to this species (Ref. 59043). Reported from the Black Sea basin (Ref. 58342).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm TL macho/indeterminado; (Ref. 556); common length : 20.0 cm TL macho/indeterminado; (Ref. 1441); common length :28 cm TL (female)

Descrição breve Chaves de identificação | Morfologia | Morfometria

Vértebras: 42 - 45. Diagnosed from its congeners in Caspian and Black Sea basin by having the following characters: anal fin origin about 1½ -2½ scales behind last branched dorsal ray; lateral line with 54-65 + 4-5 scales; anal fin rays with 13-15½ branched rays; 18-23 gill rakers; ventral keel exposed for 8-12 scales in front of anus (up to almost 80% of distance between anus and pelvic base); head length 20-24% SL; predorsal length 52-56% SL; caudal peduncle depth 1.9-2.4 times in its length; nuptial males with few, large tubercles; lacking dark midlateral stripe. Morphology is variable which has been considered to be an adaptation to different habitats, but data suggest that this is probably due to several species being confused under this species (Ref. 59043).

Biologia     Glossário (ex. epibenthic)

Inhabit lower reaches of rives, coastal lakes, estuaries, and brackish areas of sea. Occur close to surface and tolerate salinities up to 14 ppt. Adults predominantly prey on planktonic crustaceans, terrestrial insects and small fish while larvae and young juveniles feed on zooplankton, algae and insect larvae. Spawn in small rivers or streams with heavy current on gravel bottom. Landlocked populations found in reservoirs spawn in reservoir tributaries (Ref. 59043). Eastern populations migrate upstream for spawning (Ref. 13696). Males assemble and wait at the spawning grounds for ripe females, which arrive later. Deposit sticky eggs which adhere on pebbles or stones. Embryonic development lasts 2-3 days, with larvae first staying among gravel for 8-11 days, then actively migrating to shallows and backwaters. Adults migrate back to sea, lakes or estuaries soon after spawning to forage. Young juvenile undertake downriver migration in autumn of same year or next spring. Due to dam constructions, almost all long-distance migrating populations lost as they were unable to reach spawning sites. Survive in small water courses and as landlocked populations in some reservoirs. Populations are expected to decline and to further decline due to expanding hydroelectric development and strong ecological impacts on Caspian sea (Ref. 59043).

Life cycle and mating behavior Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Males assemble and wait at the spawning grounds for ripe females, which arrive later. Deposit sticky eggs which adhere on pebbles or stones. Embryonic development lasts 2-3 days, with larvae first staying among gravel for 8-11 days, then actively migrating to shallows and backwaters. Adults migrate back to sea, lakes or estuaries soon after spawning to forage. Young juvenile undertake downriver migration in autumn of same year or next spring (Ref. 59043).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

  Preocupação menor (LC) ; Date assessed: 01 January 2008

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

  Harmless




Utilização humana

Pescarias: espécies comerciais; Aquacultura: espécies comerciais
FAO(pescarias: produção; publication : search) | FishSource |

Mais informação

Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores
Ecology
Ecologia
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Frequência de comprimento
Mass conversions
Recruitments
Abundances
Life cycle
Reprodução
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larvas
Dinâmica larvar
Anatomy
Gill areas
Cérebros
Outras referências
Physiology
Body compositions
Nutrients
Oxygen consumptions
Tipo de natação
Swimming speeds
Visual pigment(s)
Sons de peixes
Diseases / Parasites
Toxicities (LC50s)
Genetics
Genética
Electrophoreses
Heritabilities
Human related
Aquaculture systems
Perfis para aquacultura
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Ciguatera cases
Stamps, coins, misc.
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References
Referências

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Descarregue XML

Fontes da internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00518 - 0.00734), b=3.12 (3.09 - 3.15), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  3.4   ±0.41 se; based on food items.
Resiliência (Ref. 120179):  Médio, tempo mínimo de duplicação da população 1,4 - 4,4 anos (tm=2-5; tmax=9; K=0.10).
Fishing Vulnerability (Ref. 59153):  High vulnerability (63 of 100).
Categoria de preço (Ref. 80766):   Unknown.