Invasion of Cyprideis salebrosa (Ostracods, Crustaceans) in Bahia Blanca Estuary, Buenos Aires, Argentina

Abstract : 

Large populations of the living benthic ostracoda Cyprideis salebrosa Van den Bold, 1963 are reported for the first time from marsh and intertidal mud flat sediments of the Bah�a Blanca estuary (Argentina). C. salebrosa has been found in current sediments of the inner zone of the estuary of Bahia Blanca in lower densities than 15%. The highest abundance values were recorded in the Villarino Viejo place (VV1-VV4) where 200 individuals of C. salebrosa were found in 6 g of dry-sediment, and the B4 samples from the Club Almirante Brown. At this site C. salebrosa represents from 96 to 100 % of all benthic ostracoda. Towards the mouth and the outer zone of the estuary (site V and VV) C. salebrosa represents approximately from 70 of 100% of the total ostracoda assemblage. The prolific distribution of C. salebrosa the levels of eutrophication in the Bah�a Blanca estuary is very important in some places and directly affecting the diversity of ostracod assamblages present; It is C. salebrosa the only species present on the sites with the highest degree of eutrophication. If these conditions continue throughout the benthic community will be affected

Keyword : 

Ostracoda, opportunistic species, Bah�a Blanca estuary, eutrophication

Author(s) : , R. G. Kihn
Downloads : 606

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