Biology:Western brook lamprey
| Western brook lamprey | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | Hyperoartia |
| Order: | Petromyzontiformes |
| Family: | Petromyzontidae |
| Genus: | Lampetra |
| Species: | L. richardsoni
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| Binomial name | |
| Lampetra richardsoni Vladykov and Follett, 1965
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| Synonyms[1][2] | |
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The Western brook lamprey (Lampetra richardsoni) is a small (<18 cm), widely distributed, non-parasitic species of jawless fish endemic to the freshwater coastal waterways of the Western United States and Canada.[3] Its range extends from the North American Pacific coast from Taku River, southern Alaska, Queen Charlotte Islands, to central California, including Vancouver Island, with major inland distributions in the Columbia and Sacramento-San Joaquin watersheds.[4][5]
One endangered[5] parasitic variety, the Morrison Creek Lamprey (Lampetra richardsoni var. marifuga), is unique to Morrison Creek, Vancouver Island, British Columbia. Which is larger in size (15 – 18 cm). The Morrison Creek Lamprey is able to feed after it becomes an adult[5] unlike the Western Brook Lamprey which can only feed in its larvae stage.[5][6]
The Western Brook Lamprey is Not at Risk (Yellow List) and does not have a Species at Risk Act.[6]
It spawns in spring until mid-summer when the water temperature is over 10 degrees Celsius. Nests made out of gravel, after hatching swept donwnstream into quieter parts of the stream and burrow into the ground. Stay in these quiet areas for about four years until eventually turning into adults. When they become adults in late summer to late fall they do not eat. After the lamprey spawns it dies.[6]
References
- ↑ Van Der Laan, Richard; Eschmeyer, William N.; Fricke, Ronald (11 November 2014). "Family-group names of Recent fishes". Zootaxa 3882 (1): 1–230. doi:10.11646/zootaxa.3882.1.1. PMID 25543675.
- ↑ Froese, R.; Pauly, D. (2017). "Petromyzontidae". http://www.fishbase.se/summary/FamilySummary.php?ID=1.
- ↑ Vladykov, Vadim D. & W. I. Follett (1965). "Lampetra richardsoni, A New Nonparasitic Species of Lamprey (Petromyzonidae) from Western North America". Journal of the Fisheries Research Board of Canada 22 (1): 139–158. doi:10.1139/f65-013.
- ↑ Hammerson, G.A., & M.Ormes. "Lampetra richardsoni". http://www.iucnredlist.org/details/full/202630/0.
- ↑ 5.0 5.1 5.2 5.3 Committee on the Status of Endangered Wildlife in Canada (COSEWIC). "COSEWIC Assessment and Status Report on the Western Brook Lamprey Lampetra richardsoni Morrison Creek Population in Canada". http://www.sararegistry.gc.ca/virtual_sara/files/cosewic/sr_Western_Brook_Lamprey_0810_e.pdf.
- ↑ 6.0 6.1 6.2 "Western Brook Lamprey – Pearson Ecological" (in en-US). https://pearsonecological.com/fish-l2-single/western-brook-lamprey/.
Wikidata ☰ Q5030882 entry
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