Environmental Entomology (1994) 23, 1245-1249
Michael D. Brown, David O. Walker, Joan K. Hendrikz, Carlson P. Cabral, Daniela B. Araujo, Zolide M. Ribeiro and Brian H. Kay (1994)
Chlorine tolerance of Mesocyclops (Cyclopoida: Cyclopidae) copepods and three container-breeding species of mosquitoes
Environmental Entomology 23 (5), 1245-1249
Abstract: Sodium hypochlorite (NaOCI) tolerance characteristics of Mesocyclops aspericornis (Daday), Mesocyclops longisetus (Thiebaud), Aedes aegypti (L.), Culex quinquefasciatus Say, and Anopheles farauti Laveran (sibling species no. 1) were investigated by measuring their mortality in response to total residual chlorine concentrations ranging from 0.0 to 2.0 ppm. Of the two Mesocyclops species evaluated, M. aspericornis showed the greatest sensitivity to chlorinated water, with an LD50 value of 0.47 ppm total residual chlorine. M. longisetus exhibited the greatest suitability for treatment of chlorinated stored water, with an LD50 value of 1.01 ppm total residual chlorine. Cx. quinquefasciatus, Ae. aegypti, and An. farauti had LD50 values of 0.71, 1.07, and 1.35 ppm total residual chlorine, respectively. The laboratory findings were compared with a field study of chlorine levels in water tanks targeted for treatment with Mesocyclops in Fortaleza (3° 45' S, 38° 35' W), Brazil.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Brian H. Kay
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
