Occidentis hubbsi (Vladykov & Kott, 1976)
Kern brook lamprey
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) > Lampetrinae
Etymology: hubbsi: In honor of American ichthyologist Carl L. Hubbs (1894-1979), “distinguished friend and a keen student of lamprey taxonomy” [placed in Entosphenus by some workers] (See ETYFish).
Eponymy: Professor Carl Levitt (Leavitt) Hubbs (1894–1979) was a giant of American ichthyology. [...] (Ref. 128868), visit book page.
Etymology: hubbsi: In honor of American ichthyologist Carl L. Hubbs (1894-1979), “distinguished friend and a keen student of lamprey taxonomy” [placed in Entosphenus by some workers] (See ETYFish).
Eponymy: Professor Carl Levitt (Leavitt) Hubbs (1894–1979) was a giant of American ichthyology. [...] (Ref. 128868), visit book page.
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; 38°N - 36°N
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
North America: East side of San Joaquin Valley in lower Merced, Kaweah, Kings, and San Joaquin rivers in California, USA.
北美洲: 已知只來自在克恩縣的 Friant-克恩的運河而且在 Merced 縣，美國加州已知只來自 Merced 河了。
北美洲: 已知只來自在克恩縣的 Friant-克恩的運河而且在 Merced 縣，美國加州已知只來自 Merced 河了。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 14.2 cm TL 雄魚/尚未辨別雌雄; (Ref. 89241); common length : 12.9 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193)
Max length : 14.2 cm TL 雄魚/尚未辨別雌雄; (Ref. 89241); common length : 12.9 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
背棘 (總數) : 0; 臀棘: 0. Characterized by having expanded oral disc narrower than head, usually 52-56 trunk myomeres, 2 supraoral teeth, usually 1-1-1-1 lateral circumoral teeth, 9-12 unicuspid posterior circumoral teeth, 5 infraoral teeth and coloration consisting of gray to brown above, white below, black specks on dorsal and caudal fins, and no black on lateral-line pores (Ref. 86798). Adults: 8.1-14.2 cm TL; body proportions (percentage of TL based on 127 specimens 8.1-14.2 cm TL): 7.8-14.4 prebranchial length, 8.5-12.8 branchial length, 44.6-56.9 trunk length, 24.3-30.8 tail length, 0.8-2.8 eye length and 3.7-8.7 disc length, 8.3-16.7 urogenital papilla length (percentage of branchial length in 9 spawning males 10.6-12.4 cm TL); trunk myomeres, 50-57. Adult dentition: supraoral lamina, 2 unicuspid teeth, rarely 3; infraoral lamina, 4-unicuspid teeth, usually 5; 4 endolaterals on each side, rarely 3; endolateral formula, typically 1-1-1-1, the first endolateral may also be bicuspid, the second and third endolaterals bi- or tricuspid, and the fourth bicuspid, however, no endolateral formula of 2-3-3-2 was encountered in 40 individuals examined; 2 row of anterials, 3-9 unicuspid teeth in total, three of these in the first row; exolaterals absent; 1 row of posterials, 8-12 unicuspid teeth in a continuous (complete) row or discontinuous (incomplete) row of only six unicuspid teeth; transverse lingual lamina, cusps too poorly developed to count, however, the median one not enlarged; longitudinal lingual laminae, cusps too poorly developed to count. Velar tentacles in adults, 3-5, with tubercles; median velar tentacle shorter than the lateral ones immediately next to it; no velar wings; body coloration (preserved), gray-brown on dorsal and lateral aspects, whitish on ventral aspect; extent of caudal fin pigmentation, 1% to <25%; caudal fin shape, rounded (Ref. 89241).
Body shape (shape guide): eel-like.
四對側齒板 (尖頭 =1-1-1-1); 上口板有二個銳利的尖頭;
Body shape (shape guide): eel-like.
四對側齒板 (尖頭 =1-1-1-1); 上口板有二個銳利的尖頭;
Adults inhabit silty backwaters of rivers and spawns in gravel riffles (Ref. 86798). Both the larval and adult stages were originally collected from the Friant-Kern Canal, which is 85% concrete lined and has a discharge greater than 57 m3/sec; an artificial habitat. Adults occur in the Merced River, which should be considered typical habitat. Adults nonparasitic (Ref. 89241).
一個非寄生的八目鰻。
一個非寄生的八目鰻。
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: 已知只來自在克恩縣的 Friant-克恩的運河而且在 Merced 縣，美國加州已知只來自 Merced 河了。
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 | 合作者
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))
易受傷害 (VU) (B1ab(iii)+2ab(iii)); Date assessed: 21 February 2012
CITES
Not Evaluated
對人類具威脅
無害處的
人類使用
漁業: 沒有興趣
FAO - Publication: search | FishSource |
更多資訊
解剖學
鰓區
腦部
耳石
鰓區
腦部
耳石
生理學
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
身體成分
營養素
耗氧量
游泳類型
游泳速度
視覺色素
魚聲
疾病與寄生蟲
毒性 (LC50s)
遺傳學
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
基因組
遺傳學
異種性
遺傳率
遺傳多樣性
工具
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網路資源
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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 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00132 (0.00060 - 0.00290), 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 (參考文獻 69278): 3.8 ±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 (Semelparous species, assuming tm (= tmax) > 4).