Luciobarbus microcephalus
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| Luciobarbus microcephalus | ||||||||||||||
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| Luciobarbus microcephalus (Almaça, 1966) |
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Barbus microcephalus Almaça, 1966 (but see text) |
Luciobarbus microcephalus là một ray-finned fish species in the family Cyprinidae. It is here placed in Luciobarbus following the IUCN, but that genus is very closely related to the other typical barbels and perhaps better considered a mere subgenus of Barbus.[1]
This small barbel is less than 26 cm (10 in) long when fully grown. It is endemic to the Iberian Peninsula, ở đó nó occurs in the middle and lower Guadiana River's drainage basin in both Portugal and Spain. A presumably introduced population is found in a small stretch of the Tajo. Its natural habitats are deep and slow rivers and reservoirs.[2]
Its numbers are declining across its rather small range, and it is classified as Vulnerable by the IUCN. By 2020 its stocks will probably number less than half of what they were at the turn of the millennium. The main cause of its decline is unsustainable use of water resources, such as water pollution, extraction for agriculture and damming. Certain planned damming projects – e.g. one near Alquedi[cần thẩm tra] – are likely to severely impact the species' stocks. Introduced exotic fishes pose an additional problem.[2]
L. microcephalus is listed in Annex V of the European Union's Habitats Directive to allow its taking from the wild to be legally restricted, and – as Barbus capito, which actually refers to its Central Asian relative, the Bulatmai Barbel – as Protected Species in Appendix III of the Convention on the Conservation of European Wildlife and Natural Habitats.[2]
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- Almodóvar, Ana; Nicola, Graciela G. & Elvira, Benigno (2008): Natural hybridization of Barbus bocagei x Barbus comizo (Cyprinidae) in Tagus River basin, central Spain [English with French abstract]. Cybium 32(2): 99-102. PDF fulltext
- Crivelli, A.J. (2006). Luciobarbus microcephalus. 2008 IUCN Red List of Threatened Species. IUCN 2008. Truy cập ngày 23 September 2009.
- de Graaf, Martin; Megens, Hendrik-Jan; Samallo, Johannis & Sibbing, Ferdinand A. (2007): Evolutionary origin of Lake Tana's (Ethiopia) small Barbus species: indications of rapid ecological divergence and speciation. Anim. Biol. 57(1): 39-48. doi:10.1163/157075607780002069 (HTML abstract)
