Bosmina (Eubosmina) coregoni baird, 1857 (Crustacea, Branchiopoda, anomopoda): new planktonic invader in the iberian peninsula,Bosmina (Eubosmina) coregoni Baird, 1857 (Crustacea, Branchiopoda, Anomopoda): un nuevo invasor planctónico en la península ibérica
Bosmina (Eubosmina) coregoni Baird, 1857 has been recorded for the first time in the Iberian Peninsula.
It is a planktonic cladoceran widely distributed in the Holarctic region which was never previously referred
in the Iberian Peninsula in spite of the numerous and intensive studies on freshwater planktonic fauna in this
geographic area in the last three decades. The species appeared in five reservoirs located in the Northwest
quadrant. Excepting Valdecañas reservoir, which can be considered eutrophic, the others (Bárcena, Peares,
Belesar and Aguieira) were classified as meso-eutrophic. The only morphotype found corresponds to Bosmina
(Eubosmina) coregoni ssp. coregoni. The maximum abundance of this species occurred during the winter
period. It is plausible to consider that waterfowl migration and the presence of recreational boats might be the
dispersion vector of this species in Iberian Peninsula.
