分類 / 名稱
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) > Petromyzontinae
Etymology: Ichthyomyzon: ichthys, fish; myzon (Gr.), to suck (borrowed from Petromyzon), i.e., a sucking fish, referring to their suctorial behavior (See ETYFish); greeleyi: In honor of fisheries scientist John R. Greeley (1904-1964), who collected holotype and granted the authors permission to describe it (See ETYFish).
Eponymy: Dr John R Greeley (1904–1964) was Assistant Director of the Institute for Fisheries Research. [...] (Ref. 128868), visit book page.
More on authors: Hubbs & Trautman.
環境: 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 126106). 溫帶; 43°N - 35°N
North America: Ohio River basin from southwestern New York to northern Alabama in USA.
北美洲: 從紐約西南方到阿拉巴馬州北部在美國的俄亥俄河流域。
大小 / 重量 / 年齡
成熟度: Lm ?  range ? - ? cm
Max length : 20.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5723); common length : 13.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
Characterized by having one slightly notched dorsal fin, oral disc as wide or wider than head, teeth moderately developed, usually 57-60 trunk myomeres, black lateral-line pores on upper side, no black on pores below gills; gray-brown above, small dark flecks on side, cream or yellow fins (Ref. 86798). Other adult diagnostic features: 10.5-16.5 cm TL. Body proportions, as percentage of TL (based on 48 specimens measuring 11.0-16.5 cm TL): prebranchial length, 8.1-11.5; branchial length, 8.8-11.0; trunk length, 46.6-55.0; tail length, 24.5-33.9; eye length, 0.9-1.8; disc length, 4.0-7.9. Urogenital papilla length, as a percentage of branchial length, in 23 spawning males measuring 10.8-15.6 cm TL, 16.0-28.6. Trunk myomeres, 55-62, with strong modes of 57-59. Dentition: supraoral lamina, 2-4 teeth, usually 3 (if 3, the median one shortest); infraoral lamina, 7-12 unicuspid teeth; 4-5 endolaterals on each side; 6-10 bicuspid endolaterals in total, the other endolaterals, if any, unicuspid; 4 rows of anterials; first row of anterials, 3 unicuspid teeth; 4-5 rows of exolaterals on each side; 2-3 rows of posterials; first row of posterials, 10-11 unicuspid teeth; crest of the transverse lingual lamina strongly w-shaped, with numerous cusps; longitudinal lingual laminae each with undetermined number of unicuspid teeth. Velar tentacles, 2-4, smooth. Body coloration (preserved), dark slate or brown color on the dorsal and lateral surfaces contrasting sharply with the light yellow ventral surface. Pineal region is light yellow. Spent individuals are dark blue on the back and sides and bluish white below. Lateral line neuromasts darkly pigmented at least by 14.3 cm TL. Extent of caudal fin pigmentation, 75% or more. Caudal fin shape, rounded. Oral fimbriae number unrecorded. Oral papillae number unrecorded (Ref. 89241).
Body shape (shape guide): eel-like.
Freshwater. Found in large to small creeks (Ref. 89241). Found in gravel riffles and sandy runs of clean, clear high-gradient streams. Ammocoete larvae occur in sand, mud and debris in pools and backwaters. Non-parasitic (Ref. 5723). Adults preyed upon by Necturus maculosus. Spawning period at the end of May in Pennsylvania. Spawning occurs in watercourses with swift current and large stones (Ref. 89241).
發現於乾淨清澈且高落差的溪流碎石激流與多沙的支流了。 幼八目鰻在深潭與滯水區中出現在沙子,泥與殘礫。 非寄生。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 從紐約西南方到阿拉巴馬州北部在美國的俄亥俄河流域。
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 20 February 2012
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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 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00107 (0.00040 - 0.00285), b=3.03 (2.80 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
營養階層 (參考文獻 69278) |
4.2 ±0.8 se; based on size and trophs of closest relatives |
回復力 (參考文獻 120179) |
低的, 最小族群倍增時間4.5 - 14 年 (Assuming tm>4). |
釣魚的脆弱性 (Ref. 59153) |
Moderate vulnerability (41 of 100). 🛈 |