Lethenteron reissneri, Far Eastern brook lamprey

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Lethenteron reissneri (Dybowski, 1869)

Far Eastern brook lamprey
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Lethenteron reissneri
Picture by Naseka, A.M.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Petromyzonti > Petromyzontiformes (Lampreys) 七鰓鰻目 (Lampreys) > Petromyzontidae (Northern lampreys) 七鰓鰻科 (Northern lampreys) > Lampetrinae
Etymology: Lethenteron: Greek, letheia = apathetic (lethe = oblivion) + Greek, enteron = intestine (Ref. 45335); referring to the degeneration of the intestine (Ref. 117245).  More on author: Dybowski.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 居於水底的.   溫帶

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Artic and Pacific Ocean drainages: In Europe in Umbra (Kola Peninsula), Severnaya Dvina, Mezen and upper Pechora drainages. In Asia eastward to Andyr drainage (Bering Sea); Amur drainage; Sakhalin Island, Hokkaido (Japan).
西北太平洋: 阿穆爾河流域,薩哈林島, Primorskii Kraii ,韓國與日本。 蘇聯-內陸的水域: 鄂霍次克海與那白令海流域的河.(北至 Anadyr' 河)

Length at first maturity / 大小 / 重量 / 年齡

Maturity: Lm ?, range 13 - 26 cm
Max length : 26.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 59043); common length : 18.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 56557); 最大年齡: 4 年 (Ref. 12218)

簡短描述 型態特徵 | 形態測量圖

Body dark brown on back and white on belly; 7 external gill openings behind eyes; single nostril opening in front of both eyes; myotomes from last gill aperture to origin of anal fin 58-64 (Ref. 45563). Diagnostic features of adults: 11.1-20.2 cm TL. Body proportions, as percentage of TL (based on 19 specimens measuring 11.6-17.2 cm TL): prebranchial length, 10.3-12.3; branchial length, 9.5-13.3; trunk length, 46.0-54.2; tail length, 25.0-31.6; eye length, 1.2-2.4; disc length, 4.7-6.4. Urogenital papilla length, as a percentage of branchial length, in three spawning males measuring 14.3-15.4 cm TL, 16.4-67.8 (based on 21 spawning males 11.1-15.4 cm TL). Trunk myomeres, 57-65. Dentition: supraoral lamina, 2 unicuspid teeth; infraoral lamina, 6-11 unicuspid teeth; 3 endolaterals on each side; endolateral formula, typically 2-2-2; 1-2 rows of anterials; first row of anterials, 4-5 unicuspid teeth; total number of anterials, 38-44 unicuspid teeth; usually one exolateral present on one or both sides, exceptionally, one complete row of exolaterals on each side; single row of posterials consisting of 19-27 unicuspid teeth; transverse lingual lamina, 13 unicuspid teeth, the median one greatly enlarged; longitudinal lingual laminae each with 7-8 unicuspid teeth. Velar tentacles, 7, with tubercles, the median tentacle shorter than the lateral ones immediately next to it. Lateral line neuromasts unpigmented. Gular region unpigmented. Second dorsal fin unpigmented. Extent of caudal fin pigmentation, 1% to <25% (33%) or, 75% or more (67%). Caudal fin shape, spade-like (Ref. 89241).
身體深褐色的背面與在腹面上的白色; 在眼後面的 7個鰓孔; 在兩眼之前的單一鼻孔; 從最後的鰓孔到臀鰭起點 58-64 的 myotomes.(參考文獻 45563)

生物學特性     字彙 (例如 epibenthic)

Freshwater. Occurs in rivers, brooks, ponds, and lakes (Ref. 89241). Inhabits all types of rivers and streams, including brackish waters and enters floodplain meadows during high waters. Ammocoetes occur in detritus-rich sands or clay sediments (Ref. 59043). Parasitic; semelparous (Ref. 12218). Adults nonparasitic (Ref. 89241). Spawns in shallow water on sand-gravel bottom (Ref. 59043). Spawning period in Japan is from mid to late May. Fecundity, 495-2,942 eggs/female in Japan, with the long diameter of eggs varying from 0.98 to 1.37 mm and the short diameter from 0.86 to 1.25 mm (Ref. 89241).

寄生的; semelparous.(參考文獻 12218)

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

西北太平洋: 阿穆爾河流域,薩哈林島, Primorskii Kraii ,韓國與日本。 蘇聯-內陸的水域: 鄂霍次克海與那白令海流域的河.(北至 Anadyr' 河)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)

IUCN 瀕危狀態 (Ref. 123251)

  無危 (LC) ; Date assessed: 01 January 2008

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00120 (0.00063 - 0.00228), b=2.96 (2.79 - 3.13), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
營養階層 (Ref. 69278):  3.5   ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (tmax=4; Fec=6,000 (semelparous)).
瀕危性 (Ref. 59153):  Low vulnerability (21 of 100) .