Luciobarbus graecus

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Luciobarbus graecus
Tình trạng bảo tồn
Phân loại khoa học
Giới (regnum) Animalia
Ngành (phylum) Chordata
Lớp (class) Actinopterygii
Bộ (ordo) Cypriniformes
Họ (familia) Cyprinidae
Chi (genus) Luciobarbus (disputed)
Loài (species) L. graecus
Danh pháp hai phần
Luciobarbus graecus
Steindachner, 1896
Danh pháp đồng nghĩa

"Barbus graceus Steindachner, 1895" (lapsus)

Barbus graecus Steindachner, 1896 (nhưng xem trong bài)

Luciobarbus graecus là một ray-finned fish species trong họ 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. Found in and adjacent to Hy Lạp, its closest living relative seems to be L. lydianus, được tìm thấy ở the northwest of Tiểu Á.[1]

It là một large barbel and can grow to almost 70 cm (28 in) long, though a typical adult is much smaller, at 10 đến 20 cm (3,9 đến 7,9 in) standard length. The lateral line extends along the whole body, which is rather large-scaled, with usually 45 to 46 scales along the lateral line, 8 rows above it and 6 rows below. The pectoral fins usually have 17 fin rays. Its fins tend to be larger on average than in its relatives, and the anal fin usually begins somewhat closer to the fairly blunt (for a Luciobarbus) snout. Its eyes are large and the head is high and narrow by the standards of its genus. Like its relatives, it has four barbels, but these are slightly shorter on average than in its relatives. Unlike in L. lydianus, its lips are not markedly swollen and of equal size; it also lacks the black spot at the root of each body scale, but has a rather prominent black rim to each body scale. It is otherwise unmarked greyish-brown above, on the sides and on most fins, and pale yellowish below and on the ventral and anal fins.[2]

This species mainly occurs in Hy Lạp, but its range barely seems to extend into Albania. Nó được tìm thấy ở the Spercheios River drainage basin. It also occurs in the Cephissus River[cần thẩm tra] and in Lake Yliki. In former times it was được tìm thấy ở Lake Paralimni, but this has been drained. It inhabits lakes and slow-moving sông. Spawning occurs in tháng 6 over sandy ground.[3]

Only được tìm thấy ở a limited area, its stocks have declined significantly due to habitat destruction and overuse of water for agriculture, water pollution, and overfishing. It is protected by law, but enforcement is considered inefficient. The species is classified as Endangered by the IUCN.[3]

Footnotes[sửa | sửa mã nguồn]

  1. ^ Crivelli (2006), de Graaf et al. (2007), Almodóvar et al. (2008)
  2. ^ Crivelli (2006), Turan et al. (2008)
  3. ^ a ă Crivelli (2006)

Tham khảo[sửa | sửa mã nguồn]

  • 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 graecus. 2008 IUCN Red List of Threatened Species. IUCN 2008. Truy cập ngày 23 tháng 9 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)
  • Turan, Davut; Ekmekçi, F. Güler; Ilhan, Ali & Engin, Semih (2008): Luciobarbus kottelati, a new species of barbel (Teleostei: Cyprinidae) from the Büyük Menderes River, Thổ Nhĩ Kỳ, with rediagnose of L. lydianus. Zootaxa 1824: 35-44. Abstract and first page text