Ecotoxicological Bioassays For Aquatic Ecosystems With Microalgae Pseudokirchneriella Subcapitata

Transcript

A quick and simple bioassay ecotoxicological allows a quick estimate, evaluating the state of the aquatic ecosystems of the Majes-Camana-Colca watershed region Arequipa, Peruvian in the sampling stations (Taparza, Grande, Majes1, Majes2, and Camana) by inhibition of growth of microalgae Pseudokirchneriella subcapitata 24, 48, 72 hours to Effective Concentration (EC50) at 72 hours compared to Peruvian National Environmental Quality Standards (ECA) guidelines and water quality of the World Health Organization (WHO). Noting that in the sampling stations and Majes2 Majes1 greater inhibition of growth of P. subcapitata were recorded values surpassing thermotolerant coliforms, Aluminium, Manganese, Iron and Total Suspended Solids (TSS) compared with WHO and ECA record high correlated with the percentage of inhibition of growth of P. subcapitata (r = 0.92; p 100%) categorizing as nontoxic; Grande (EC50 = 84.2%) categorizing it as slightly toxic; Majes1 (EC50 = 60.7%) and Majes2 (EC50 = 57.43%) categorizing them as moderately toxic; and Camaná (EC50 = >100%) categorizing as nontoxic.