分類 / 名稱
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Teleostei >
Cypriniformes (Carps) >
Leuciscidae (Minnows) > Leuciscinae
Etymology: Alburnus: From the city of Al Bura, where the fish was known (Ref. 45335); leobergi: Named after Leo S. Bergi who first realized that there are different shemayas in the Black and Azov Sea basin.
Eponymy: Lev (Leo) Semionovitch (Semenovich) Berg (1876–1950). (See Berg) (Ref. 128868), visit book page.
More on authors: Freyhof & Kottelat.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水; 半鹹淡水 底中水層性.
Europe: Sea of Azov basin in Russia and Ukraine. Landlocked population in Tsimlyansk Reservoir (Don drainage).
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 40.3 cm TL 雄魚/尚未辨別雌雄; (Ref. 75106)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Differs from other species of shemayas by the combination of the following characters: origin of anal fin about 1½ -2½ scales behind dorsal-fin base; anal fin with 15-17½ branched rays; gill rakers 24-28; length of gill raker at angle between upper and lower limbs of first gill arch 30-50% of opposite inner gill filament; lateral line scales 54-64 + 4-5; ventral keel exposed for 4-6 scales in front of anus; head length 21-23% SL; predorsal length 55-57% SL; caudal peduncle depth 9-11% SL,1.7-2.0 times in its length; eye diameter 4.7-5.5% SL, 1.4-1.5 times in interorbital distance; absence of faint grey midlateral stripe; in adult spawners, base of paired fins grey; and presence of numerous small tubercles in nuptial males (Ref. 75106).
Body shape (shape guide): fusiform / normal.
Inhabit lower reaches of rivers, coastal lakes, estuaries, and open sea. Occur close to surface and tolerate salinities up to 12 ppt at the sea. Adults predominantly prey on planktonic crustaceans, terrestrial insects, and small fish. Larvae and young juveniles feed on zooplankton, algae, and insect larvae. Undertake migration for long distances, up to upper reaches of streams in piedmont and montane zones. Spawns in rivers or streams with heavy current on gravel bottom. Landlocked population breeds in reservoir tributaries. Adults migrate back to the sea soon after spawning to forage while young juveniles move downriver in autumn of same year or next spring. Commonly hybridizes with Squalius cephalus. Populations sharply declined in the early and middle 20th century due to the constructed dams that hindered in reaching the spawning grounds. Remaining populations spawn below these dams (Ref. 59043).
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Anadromous populations begin to enter rivers during autumn (September in Kuban) and move upstream during winter and/or in spring. Males assemble and wait at the spawning grounds for ripe females, which arrive later. Lay sticky eggs which adhere on pebbles or stones. Adults migrate back to the sea soon after spawning to forage while young juveniles move downriver in autumn of same year or next spring (Ref. 59043).
Freyhof, J. and M. Kottelat, 2007. Review of the Alburnus mento species group with description of two new species (Teleostei: Cyprinidae). Ichthyol. Explor. Freshwat. 18(3):213-225. (Ref. 75106)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
易受傷害 (VU) (A2c); Date assessed: 26 April 2022
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基於模型的估計
系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00661 (0.00311 - 0.01404), b=3.13 (2.96 - 3.30), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
2.7 ±0.3 se; based on size and trophs of closest relatives |
回復力 (參考文獻 120179) |
中等的, 族群倍增時間最少 1.4 - 4.4年 (Assuming Fec < 10,000). |
釣魚的脆弱性 (Ref. 59153) |
Moderate vulnerability (43 of 100). 🛈 |