Squalius alburnoides explained

Squalius alburnoides is a species of fish in the family Cyprinidae. It is found in Portugal and Spain. Its natural habitats are rivers and intermittent rivers. It may be threatened by habitat loss.

This species is a highly peculiar fish in regard to its evolution and reproduction. It has been derived from hybridisation between females of Squalius pyrenaicus and males of another, unknown cyprinid species, and maintains the genomes of both parental species. Squalius alburnoides may have various numbers of these genomes (polyploidy), and may use different reproductive modes to pass them on to the offspring, including asexual reproduction, normal meiosis and hybridogenesis.^[1] It has the first confirmed instance of natural androgenesis in a vertebrate, where an individual inherits only genes from the father.^[2]

External links

• Cunha . etal . 2011 . The evolutionary history of the allopolyploid Squalius alburnoides (Cyprinidae) complex in the northern Iberian Peninsula . Heredity . 106 . 1. 100–112 . 10.1038/hdy.2010.70 . 20531449 . 3183856 .

Notes and References

1. Collares-Pereira M.J., Coelho M.M. . 2010 . Reconfirming the hybrid origin and generic status of the Iberian cyprinid complex Squalius alburnoides . Journal of Fish Biology . 76 . 3. 707–715 . 10.1111/j.1095-8649.2009.02460.x. 20666907 . 2010JFBio..76..707C .
2. Morgado-Santos . Miguel . Carona . Sara . Vicente . Luís . Collares-Pereira . Maria João . First empirical evidence of naturally occurring androgenesis in vertebrates . Royal Society Open Science . 2017 . 4 . 5 . 170200 . 10.1098/rsos.170200 . 28573029 . 5451830 . 2017RSOS....470200M . free .