分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Petromyzonti >
Petromyzontiformes (Lampreys)
七鰓鰻目 (Lampreys) >
Petromyzontidae (Northern lampreys)
七鰓鰻科 (Northern lampreys) > Lampetrinae
Etymology: Eudontomyzon: eu-, a Greek intensive (good, well or very); odontos (Gr.) tooth, referring to numerous radially arranged teeth of E. danfordi; myzon (Gr.), to suck (borrowed from Petromyzon), referring to their suctorial behavior. (See ETYFish); danfordi: In honor of Charles George Danford (1843-1928), Scottish artist, sportsman and ornithologist, who collected holotype. (See ETYFish).
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243). 溫帶; 50°N - 44°N, 19°E - 26°E (Ref. 59043)
Europe: Danube drainage: endemic to tributaries (Tisza and Timis rivers) of the upper reaches of the Danube River.
歐洲: 多瑙河的上游的支流 (Tisza 與 Timis 河) 的特有種。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 21.8, range 14 - 30 cm
Max length : 30.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12281); common length : 18.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12281); 最大年齡: 7 年 (Ref. 12281)
簡短描述
型態特徵 | 形態測量圖
背棘 (總數): 0; 背的軟條 (總數): 0. Distinguished from other species of this genus by its predatory mode of life. Breeding adults are usually 14-30 cm long. There are 58-70 trunk myomeres. The trunk is not mottled in ammocoetes. The caudal fin is hyaline (Ref. 59043). Adults: 12-30 cm TL. Body wet weight of 48 individuals 14.0-24.1 cm TL, 2.66-21.65 g. Body proportions, as percentage of TL (based on 60-66 specimens measuring 14.0-24.1 cm TL): prebranchial length, 7.8-13.5; branchial length, 8.6-11.4; trunk length, 42.9-52.5; tail length, 25.6-32.3; cloacal slit length, 0.6-1.7; eye length, 1.0-2.1; disc length, 2.8-7.5; prenostril length, 4.1-8.3; snout length, 4.8-9.3; postocular length, 2.2-3.5. Intestine diameter, 0.03- 0.50 cm. The urogenital papilla length, as a percentage of branchial length, in a spawning male measuring 18 cm TL, 16.2. Trunk myomeres, 59-68. Dentition: Most labial teeth are villiform; supraoral lamina, 2 unicuspid teeth; infraoral lamina, 7-12 teeth, the lateralmost sometimes bicuspid while the rest are unicuspid; usually 3 endolaterals on one side (96%), but 4 (3%) and 2 (1%) also found; endolateral formula, typically 1-2-2 (59%) and 2-2-2 (23%), but also 1-2-1 (9%), and rarely 1-1-2, 2-2-1, 2-3-2, 1-2-2-1, 2-2-2-1, 1-2, 1-3-2, 1-3-1; 4-7 rows of anterials; first row of anterials, 6-13 unicuspid teeth; 2-5 rows of exolaterals; 2-4 rows of posterials; first row of posterials, 15-28 unicuspid teeth; transverse lingual lamina, 9-15 unicuspid teeth, the median one enlarged; longitudinal lingual laminae each with 10-17 usually unicuspid teeth, rarely, one may be bicuspid. Velar tentacles, 7-16, with tubercles; dorsal wings consisting of 2-6 tentacles usually present on either side, not reaching the median tentacle. Body coloration (live) gray blue on the head and dorsal aspect, gray towards pink on lateral aspects and white on the ventral aspect. Lateral line neuromasts unpigmented. Caudal fin pigmentation, - (20%), + (4%), ++ (12%), +++ (64%). Caudal fin shape, spade-like. Oral fimbriae, 90-115. Oral papillae, 15-25 (Ref. 89241).
用它的生活的掠食性模態與其他種的這一個屬區分了。 繁殖成魚通常是 14-30 公分長。 有 58-70 軀幹 myomeres 。 軀幹在 ammocoetes 中不是有斑點的。 尾鰭是透明的。
Freshwater species, found in brooks and rivers. In Slovakia, it occurs in the submountainous zone at altitudes between 465 and 550 m and in Subcarpathian Ukraine it is found almost exclusively above 250 m (Ref. 89241). Adults inhabit piedmont and montane zones in clear, well oxygenated brooks. Ammocoetes live in detritus-rich sands or clay sediments (Ref. 59043). Ammocoetes feed on detritus and insect larvae; this stage lasts for 3.5-4.5 years in Danube drainage (Ref. 59043), or 4 to over 5 months in European freshwater basins (Ref. 89241). Larvae live 4+ - 5+ years (Ref. 89241). Metamorphosis usually starts in July - August and lasts for 1-5 months. Adults feed on the blood and flesh of both living and dead fish. They migrate upstream to the upper reaches of brooks during spawning time in spring (Ref. 12268, 59043). The adult phase lasts 17-19 months, feeding only during the first year. Adults parasitic/scavenger on various fishes. The spawning period varies with location. Fecundity, 7,500-10,300 eggs/female. Dead and spent adults have been found in April and May in Subcarpathian Ukraine, whereas in Romania, spawning is said to take place from the end of May into June in Iara Brook, Transylvania and between the end of June and the beginning of July in Bistra Mărului Brook, Banat. In certain regions of Romania, local people consume (presumably adults of) this species and fishermen also use it (presumably the ammocoetes) as live bait. The feeding phase adults inflict serious damage to trout in Romanian hatcheries (Ref.89241).
在碎屑與昆蟲幼生上的 Ammocoete 吃; 這一個階段持續達 3-4 年。 銳變通常在七月開始 - 八月而且持續達 1-5個月。 成年的八目鰻吃兩者活的與死魚的血液與肉。 他們移動在春天在繁殖期的時候溯河到小溪的上游.(參考文獻 12268,59043) 成魚階段持續 17-21個月。 他們產卵 2,000-3,000個每母魚卵，而且它非常有可能那然後，多數死亡。 成魚在羅馬尼亞被使用當作食物。 也被當作活餌使用.(參考文獻 12281)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Ammocoete stage lasts 3.5-4.5 years feeding on detritus and insect larvae. Metamorphosis usually occurs in July - August which lasts 1-5 months wherein feeding starts in the following March. Spawning occurs in spring (April-June) in uppermost reaches of brooks, usually after one year of predatory life (Ref. 59043).歐洲: 多瑙河的上游的支流 (Tisza 與 Timis 河) 的特有種。
Renaud, C.B. and J. Holcík, 1986. Eudontomyzon danfordi Regan 1911. p. 146-164. In J. Holcík (ed.) The freshwater fishes of Europe. Petromyzontiformes. AULA-Verlag GmbH, Wiesbaden. 313 p. (Ref. 12281)
人類使用
漁業: 自給性漁業; 誘餌: occasionally
更多資訊
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00056 - 0.00284), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.2 ±0.53 se; based on food items.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Semelparous species, assuming tm (= tmax) > 4).
Fishing Vulnerability (Ref.
59153): Low vulnerability (20 of 100).
