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Squalius alburnoides (Steindachner, 1866)

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Squalius alburnoides
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Straalvinnigen) > Cypriniformes (Carps) > Cyprinidae (Minnows or carps) > Leuciscinae
  More on author: Steindachner.

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

; zoetwater benthopelagisch.   Subtropical; 42°N - 36°N, 9°W - 1°W

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Europe: Iberian Peninsula in Douro, Tagus, Sado, Guadiana, Odiel, Guadalquivir and Quarteira drainages. Introduced in Júca drainage. In Appendix III of the Bern Convention (protected fauna). In Appendix III of the Bern Convention (protected fauna).

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 25.0 cm TL mannelijk/geslacht niet bekend; (Ref. 556); common length : 15.0 cm TL mannelijk/geslacht niet bekend; (Ref. 556)

Korte beschrijving Morfologie | Morfometrie

Dorsale zachte stralen (totaal): 7; Anale zachte stralen: 7 - 9. Diagnosed from other Cyprinidae in Iberian Peninsula by the following characters: barbels absent; dark midlateral stripe from snout to caudal base; body slender, depth 3.8-4.4 times in SL; 37-42 + 2-3 scales on lateral line; mouth opening upward; and anal fin with usually 8½ branched rays (Ref. 59043).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Lives in schools in lowland rivers and lakes. Feeds on invertebrates, chiefly small crustaceans and insect larvae. Breeds in April-May among aquatic plants and on stony bottoms in shallow water. Threatened due to pollution, habitat destruction and the introduction of other species (Ref. 26100). The species is unique as it represents a stable all-male lineage nested within an almost all-female hybrid lineage (Ref. 49905).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

This species originated as a hybrid that is now recognized as a species and consists only of diploid males. The males mate with triploid females that are current hybrids. These females produce haploid eggs with chromosomes that are identical to those of the males. These matings apparently produce only males.

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

Collares-Pereira, M.J. and M.M. Coelho, 2010. Reconfirming the hybrid origin and generic status of the Iberian cyprinid complex Squalius alburnoides. J. Fish Biol. 76(3):707-115. (Ref. 106132)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Kwetsbaar, zie IUCN Rode Lijst (VU) (A3ce); Date assessed: 31 January 2006

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00406 - 0.01705), b=3.13 (2.96 - 3.30), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.40 se; Based on food items.
Weerstandsvermogen (Ref. 69278):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Low to moderate vulnerability (33 of 100) .