Occidentis pacifica (Vladykov, 1973)
Pacific brook lamprey
分类 / 名称 俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Petromyzonti > Petromyzontiformes (Lampreys) > Petromyzontidae (Northern lampreys) > Lampetrinae
Etymology: pacifica: -ica (Gr.), belonging to: Pacific Coast streams of California and Oregon, USA, where it occurs (See ETYFish).
Etymology: pacifica: -ica (Gr.), belonging to: Pacific Coast streams of California and Oregon, USA, where it occurs (See ETYFish).
Taxonomic Remarks
This species may be a synonym of L. richardsoni, the lower number of trunk myomeres in the former reflecting a latidutinal cline. This requires further investigation.
环境：氛围 / 气候带 / 深度上下限 / 分布范围 生态学
; 淡水 居于水底的; 非迁移的.
分布 领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
North America: USA, restricted to Columbia River drainage, Oregon,
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 17.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 89241); common length : 12.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 12193)
Max length : 17.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 89241); common length : 12.5 cm TL 雄鱼/尚未辨别雌雄; (Ref. 12193)
简单描述 检索表 | 型态特徵 | 形态测量图
Adults: 9.8-17.5 cm TL. Body proportions, as percentage of TL (based on 39 specimens measuring 9.8-17.3 cm TL): prebranchial length, 8.9-12.8; branchial length, 8.9-11.3; trunk length, 44.7-53.5; tail length, 24.3-35.0; eye length, 1.4-3.0; disc length, 4.1-7.2. Urogenital papilla length, as a percentage of branchial length, in ten spawning males measuring 11.2-13.3 cm TL, 17.8-36.4. Trunk myomeres, 53-58. Dentition: supraoral lamina, 2 unicuspid teeth; infraoral lamina, 6-9 unicuspid teeth, usually 8; usually 3 endolaterals on each side, occasionally 2 on one side; endolateral formulae highly variable with the first two teeth 1-3 and the third 1-2; 1-2 rows of anterials; first row of anterials, 6 unicuspid teeth (in spawning specimens, the teeth in the anterior field may be lost); exolaterals absent; posterials absent; transverse lingual lamina, undetermined number of minute unicuspid teeth on either side of an enlarged median one; longitudinal lingual laminae cusps too small to count. Velar tentacles, 3-6, with tubercles. Body coloration (preserved), dark gray on dorsal and lateral aspects, whitish on ventral aspect. Lateral line neuromasts unpigmented. Extent of caudal fin pigmentation, 1% to <25% (in prespawning individuals) or, 75% or more (in spawning individuals). Fleshy tissues around the lingual laminae darkly pigmented. Caudal fin shape, rounded. Oral fimbriae, 83 (holotype).
Body shape (shape guide): eel-like.
Body shape (shape guide): eel-like.
Freshwater; creeks and rivers. Metamorphosis occurs in October in Oregon and California.
Adults nonparasitic. Based on the dates of collection of spawning individuals in the original description, the spawning period probably occurs between mid-April and August in Oregon, while in California spawning probably occurs between the end of April and the beginning of May (Ref. 89241).
生命周期和交配行为 成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
主要参考文献
上传您的参考资料 | 参考文献 | 合作者 | 合作者
Renaud, C.B., 2011. Lampreys of the world. An annotated and illustrated catalogue of lamprey species known to date. FAO Species Catalogue for Fishery Purposes. No. 5. Rome, FAO. 109 pp. (Ref. 89241)
CITES
Not Evaluated
对人类的威胁
人类利用
FAO - Publication: search | FishSource |
更多信息
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生理学
身体成分
营养素
耗氧量
游泳类型
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视觉色素
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疾病与寄生虫
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游泳类型
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视觉色素
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疾病与寄生虫
毒性（半数致死浓度）
遗传学
基因组
遗传学
异质性
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基因组
遗传学
异质性
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基因多样性
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特别资料
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网络资源
AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes: 属, 种 | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 树状分类阶层 | Wikipedia: 转至, 搜寻 | World Records Freshwater Fishing | 动物学的记录
基于模型的估算
|
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00129 (0.00059 - 0.00283), b=2.98 (2.79 - 3.17), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
|
营养阶层 (参考文献 69278) |
3.8 ±0.8 se; based on size and trophs of closest relatives |
|
回复力 (参考文献 120179) |
低的, 最小族群倍增时间4.5 - 14 年 (Semelparous species, assuming tm (= tmax) > 4). |
|
渔业脆弱性 (Ref. 59153) |
Moderate vulnerability (37 of 100). 🛈 |