title: Development of a short-term chronic toxicity test with a tropical mysid.
abstract: There is an increasing need to develop reliable methodologies for chronic toxicity testing using tropical species. The present work aimed at developing a suitable short-term chronic toxicity test with Mysidopsis juniae using zinc (Zn) and nickel (Ni) as model chemicals and growth (length and dry weight), survival, and egg production (number of females with eggs) as endpoints after seven days of exposure. Survival and growth of newborn M. juniae were affected by chronic exposure to zinc, while nickel affected only survival. For zinc, dry weight was the most sensitive endpoint with significant effects even at the lowest tested concentration (75μgZn·L(-1)), whereas for nickel, survival was the most sensitive parameter (LC20 of 26μgNi·L(-1)). Egg production was not affected. M. juniae short-term chronic testing is a sensitive approach to evaluating metal toxicity; further studies are necessary to assess chronic toxicity for others contaminants in the proposed assay.
authors.affiliation: Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (LABOMAR), Universidade Federal do Ceará, Av. da Abolição, 3207, Bairro Meireles, CEP 60165-081 Fortaleza, Ceará, Brazil; Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Av. Lineu Prestes 1524, Cidade Universitária, São Paulo, São Paulo, Brazil.
authors.forename: Lívia Pitombeira de
authors.initials: LP
authors.lastname: Figuerêdo
authors.affiliation: Universidade Federal de Sergipe, Departamento de Ecologia, Cidade Universitária Prof. José Aloísio de Campos, Av. Marechal Rondon, s/n, Bairro Jardim Rosa Elze, CEP 49100-000 São Cristóvão, Sergipe, Brazil.
authors.forename: Jeamylle
authors.initials: J
authors.lastname: Nilin
authors.affiliation: Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (LABOMAR), Universidade Federal do Ceará, Av. da Abolição, 3207, Bairro Meireles, CEP 60165-081 Fortaleza, Ceará, Brazil.
authors.forename: Allyson Queiroz da
authors.initials: AQ
authors.lastname: Silva
authors.affiliation: Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal.
authors.forename: Susana
authors.initials: S
authors.lastname: Loureiro
authors.affiliation: Laboratório de Ecotoxicologia Marinha, Instituto de Ciências do Mar (LABOMAR), Universidade Federal do Ceará, Av. da Abolição, 3207, Bairro Meireles, CEP 60165-081 Fortaleza, Ceará, Brazil; Department of Biology and CESAM, University of Aveiro, 3810-193 Aveiro, Portugal. Electronic address: costalotufo@gmail.com.
authors.forename: Letícia Veras
authors.initials: LV
authors.lastname: Costa-Lotufo
mesh_terms: D000818:Animals; D003445:Crustacea / Q000187:drug effects*; D005260:Female; D009532:Nickel / Q000633:toxicity; D036401:Toxicity Tests, Chronic / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000633:toxicity*; D015032:Zinc / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical; D009532:Nickel; D015032:Zinc
keywords: Length; Metals; Mysids; Reproduction; Survival