Suitability of five cladoceran species from Mexico for in situ experimentation.
Although they are highly suited for site-specific risk assessment, little attention has been given to in situ ecotoxicological experimentation in tropical regions. This study intended to assess the suitability of five freshwater cladocerans from Mexico for in situ experiments. Juveniles of Ceriodaphnia cornuta, Macrothrix triserialis group, Simocephalus vetulus, Diaphanosoma birgei, and Pseudosida cf. ramosa, from two populations, were used to perform seven day laboratory and in situ experiments. Pseudosida cf. ramosa was very sensitive to handling and was discarded from further evaluations. Ceriodaphnia cornuta reproduced significantly more neonates, with smaller coefficients of variation, than M. triserialis and S. vetulus. Also due to its worldwide distribution in the tropics, C. cornuta is suggested to be highly suitable for in situ experiments.
Lopes
Isabel
I
CESAM & Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, P-3810 193 Aveiro, Portugal. ilopes@ua.pt
Moreira-Santos
Matilde
M
Rendón-von Osten
Jaime
J
Baird
Donald J
DJ
Soares
Amadeu M V M
AM
Ribeiro
Rui
R
D000818:Animals; D049628:Body Size / Q000187:drug effects; D033361:Cladocera / Q000145:classification / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D005618:Fresh Water; D008800:Mexico; D012098:Reproduction / Q000187:drug effects; D018570:Risk Assessment / Q000379:methods; D013045:Species Specificity; D016019:Survival Analysis; D018675:Toxicity Tests; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D014874:Water Pollutants, Chemical