Country Species Summary

Lampetra planeri in Finland
European brook lamprey

Lampetra planeri (Bloch, 1784)
Family:	Petromyzontidae (Lampreys) , subfamily: Petromyzontinae	picture (Lapla_u0.jpg) by Zienert, S.
Order:	Petromyzontiformes (lampreys)
Class:	Cephalaspidomorphi (lampreys)
FishBase name:	European brook lamprey
Max. size:	20.0 cm TL (male/unsexed; Ref. 2163); max. reported age: 7 years
Environment:	demersal; potamodromous
Climate:	temperate; 1 - 15°C; 68°N - 36°N
Global Importance:	fisheries: of no interest; aquarium: public aquariums; bait: usually
Resilience:	Medium, minimum population doubling time 1.4 - 4.4 years (K=0.16; tm=6-7; tmax=7; Fec=800 (semelparous))
Distribution:	Europe: Sweden to France. Has become very rare in southeastern France; can still be found in the Sorgues (affluents of the Ouvèze River) and in the Lez (Ref. 5575). Likely to benefit from an environmental regulation passed on 8/12/88 (France, Ref. 2163). Appendix III of the Bern Convention (protected fauna). Reports from Portugal need confirmation (Ref. 11237). Protected in the Netherlands (Ref. 12269).
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 0-0; Anal spines: 0-0; Anal soft rays: 0-0. Poorly developed fins, dorsal fins in contact in mature adults, blue-green back, yellow flanks, white ventral portion. Sigmund Freud (Ref. 72450, 72451 ) described the development of the central nervous system of brook lamprey.
Biology:	Lives exclusively in freshwater; in middle and upper reaches of small streams and rivers, occasionally in lakes. Larvae lie buried in the substrate while adults live in the open water. Larvae of this species can serve as mid-term bio-indicators (Ref. 57699). Filter feeding larvae, non-feeding adults (= non-parasitic). Reproduction takes place upstream, from April to May. Because of its small size and the mediocre quality of its meat, it is rarely fished. The larvae are utilized as bait (Ref. 30578)
Threatened:	, (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Hardisty, M.W.. 1986. (Ref. 12315)
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Finland country information
Common names:	Pikkunahkiainen	Ref: Koli, L., 1990
Status:	native	Ref:
Salinity:	freshwater
Abundance:	fairly common (chances are about 50%)	Ref:
Importance:	of no interest	Ref:
Regulations:	no regulations	Ref:
Uses:	no uses
Comments:	Also Ref. 6114. Occurs through the country except North from Muonio and Saariselkä, and rivers flowing towards White Sea in Kuusamo.
Country Information:	www.cia.gov/cia/publications/factbook/geos/fi.html
Occurrences:	Occurrences Point map
Main Ref:	Blanc, M., J.-L. Gaudet, P. Banarescu and J.-C. Hureau, 1971
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Modified: Kuosmanen-Postila, Sari

Entered: Reyes, Rodolfo B.

CGNET - US

Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07

	Ref.:		Glossary
		(e.g. 9948)		(e.g. cephalopods)
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