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Development of acute and chronic toxicity bioassays using the pelagic copepod Gladioferens pectinatus.
Charry, Maria P; Northcott, Grant L; Gaw, Sally; Keesing, Vaughan; Costello, Mark J; Tremblay, Louis A.
Afiliación
  • Charry MP; Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand; School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand.
  • Northcott GL; Northcott Research Consultants, 20 River Oaks Place, Hamilton 3200, New Zealand.
  • Gaw S; Chemistry Department, University of Canterbury, Private Bag 4800, Christchurch 8140 New Zealand.
  • Keesing V; Boffa Miskell Ltd, PO Box 13340, Wellington 6142, New Zealand.
  • Costello MJ; Institute of Marine Science, University of Auckland, Auckland 1142, New Zealand.
  • Tremblay LA; Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand; School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand. Electronic address: louis.tremblay@cawthron.org.nz.
Ecotoxicol Environ Saf ; 174: 611-617, 2019 Jun 15.
Article en En | MEDLINE | ID: mdl-30875554
Well validated and reliable biological assays using local and native species are required to characterise the impacts of pollution on ecosystem health. We identified a native estuarine pelagic copepod species suitable for assessing the ecotoxicological impact of anthropogenic contaminants. Gladioferens pectinatus fulfilled the necessary-selection criteria of: wide distribution and abundance across New Zealand estuaries, ease of maintenance in the laboratory, short life cycle, sensitivity to toxicants with different modes of action, and providing reproducibility of biological response to toxicants. Measured endpoints were survival and larval development rate for the nauplii, and survival, realized offspring and total potential offspring for adults. LC50 values for the survival of G. pectinatus exposed to copper, phenanthrene and chlorpyrifos were 170 (143-193), 181.3 (131.3-231.3) and 4.3 (3.8-4.9) µg/L, respectively. The most sensitive chronic endpoint identified for G. pectinatus was the larval development rate, with EC50 values of 49.8 (45-55.3), 31.3 (24.8-44.7) and 1.97 (1.6-2.31) µg/L for copper, phenanthrene and chlorpyrifos, respectively. The acute and chronic responses obtained for G. pectinatus against the three reference toxicants are comparable with those reported for other copepod species and confirm its sensitivity and suitability to assess the toxicity of New Zealand estuarine samples.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Bioensayo / Pruebas de Toxicidad Aguda / Copépodos / Pruebas de Toxicidad Crónica Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: Ecotoxicol Environ Saf Año: 2019 Tipo del documento: Article País de afiliación: Nueva Zelanda Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Bioensayo / Pruebas de Toxicidad Aguda / Copépodos / Pruebas de Toxicidad Crónica Tipo de estudio: Prognostic_studies Límite: Animals País/Región como asunto: Oceania Idioma: En Revista: Ecotoxicol Environ Saf Año: 2019 Tipo del documento: Article País de afiliación: Nueva Zelanda Pais de publicación: Países Bajos