Pit-Klamath brook lamprey
📖 Overview
Adults inhabit riffles and runs of clear streams. Ammocoetes larvae occur near weed beds and sand bars. Non-parasitic . Freshwater; adults from Crooked Creek, Oregon are sexually mature in mid-March .
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 0; Anal spines: 0. Adults: 12.4-18.4 cm TL. Adult body proportions, as percentage of TL (based on ten specimens 12.6-18.4 cm TL): prebranchial length, 8.2-13.3; branchial length, 8.4-10.8; trunk length, 43.4-51.6; tail length, 28.8-35.3; eye length, 1.6-3.2; disc length, 4.1-6.1; urogenital papilla length, 16.0 (percentage of branchial length in a spawning male measuring 12.9 cm TL); trunk myomeres, 58-73. Adult dentition: supraoral lamina, 2-3 unicuspid teeth, usually 3; infraoral lamina, 5-7 unicuspid teeth; 4 endolaterals on each side; endolateral formula, typically 2-2-2-2 or 2-3-3-2, the first and fourth endolaterals may also rarely be unicuspid; 2-3 rows of anterials; first row of anterials, 1 or 5 unicuspid teeth; exolaterals absent; 1 row of posterials with 10-17 teeth, of which 0-12 are bicuspid and the rest unicuspid; transverse lingual lamina, 15-20 unicuspid teeth, the median one slightly enlarged; longitudinal lingual laminae each with undetermined number of unicuspid teeth. Velar tentacles in adults, 5-12, with tubercles; median tentacle shorter than the lateral ones immediately next to it; body coloration (preserved), ventral aspect whitish; oral papillae, 5-26 .: eel-like.
🌀 Behaviour
Behavioural data for Pit-Klamath brook lamprey is currently being reviewed.
🦐 Diet
🥚 Reproduction
Semelparous .
🌍 Habitat & Distribution
Freshwater; demersal; non-migratory . Temperate; 43°N - 41°N North America: Klamath River in south central Oregon (rare) and Pit River in northeastern California, USA.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🌐 Names & Taxonomy
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Lampetra lethophaga | Hubbs | 1971 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .
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