Survival of Ceriodaphnia dubia [Crustacea, Cladocera] exposed to different screens against natural ultraviolet radiation

• Autorzy: De Los Rios P , Acevedo P. , Verdugo K.
• Języki publikacji: EN

Abstrakty

EN

The current increase of penetration of natural ultraviolet radiation (UVR ) in southern South America affects water bodies because the UVR can penetrate the water column. In this scenario, the zooplankton develops photoprotective strategies such as vertical migrations against UVR or synthesis of photoprotective substances. The present study was done using a population of Ceriodaphnia dubia. that was collected from small shallow wetland near Temuco, Chile. The specimens were exposed for 7 to 9 hours to natural ultraviolet radiation, and with different colored nylon as protection against UVR , the experiment was done during the southern summer of 2006. The results revealed that in the presence of protection against UVR provided by colored nylon, the mortality was low, whereas under exposure to UVR and covering by transparent nylon total mortality was observed. The relation between mortality and the dose of UV that can penetrate the different colored nylon is represented by LC₅₀ in UV (280-400 nm) and UVB (280-320 nm), within intensities of 234.82 and 14.96 kJ/m², respectively.

Słowa kluczowe

EN

ultraviolet radiation; natural ultraviolet radiation; Daphnia; Ceriodaphnia dubia; Crustacea; Cladocera; survival; dissolved organic carbon; wetland

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2007
• Tom: 16
• Numer: 3
• Opis fizyczny: p.481-485,fig.,ref.

Twórcy

autor

De Los Rios P

• Universidad Catolica de Temuco, Casilla 15-D, Temuco, Chile

autor

Acevedo P.

autor

Verdugo K.

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