TY - JOUR
T1 - Bioaccumulation and chronic toxicity of arsenic and zinc in the aquatic oligochaetes Branchiura sowerbyi and Tubifex tubifex (Annelida, Clitellata)
AU - Lobo, Haroldo
AU - Méndez-Fernández, Leire
AU - Martínez-Madrid, Maite
AU - Rodriguez, Pilar
AU - Daam, Michiel A.
AU - Espíndola, Evaldo L.G.
N1 - Funding Information:
We would like to thank the National Council for Scientific and Technological Development (CPNq) and the Coordination of Higher Education Personnel Improvement (CAPES) from Brazilian Government for the scholarships granted (CNPq: 140771/2010-7 ; CAPES: PDSE 9805/11-7 ). This work was possible thanks to the support from the Education and Science Ministry research project ( MEC CGL2008-04502/BOS ) and from the Basque Government ( IT-405-10 ). Financial support was also provided to M. Daam by the Portuguese government (Fundação para a Cien̂cia e Tecnologia; FCT) through the research unit UIDB/04085/2020 (CENSE). We gratefully acknowledge Dr. Juan Carlos Raposo from the Analytical services of SGIker (UPV/EHU), Dra. Maria Olímpia de Oliveira Resende and Msc. Ramom Rachid Nunes, from the Laboratory of Environmental Chemistry (IQSC, São Paulo University) for their technical assistance provided.
PY - 2021/10
Y1 - 2021/10
N2 - Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
AB - Oligochaetes feed on bulk sediment and penetrate the sediment through the construction of burrows, making them especially vulnerable to sediment metal contamination. However, the few oligochaete species that have been tested to date are almost exclusively temperate test species. Although the warmwater adapted species Branchiura sowerbyi has been indicated as a promising candidate for tropical sediment toxicity testing, few (especially chronic) studies have been conducted so far to confirm this. Therefore, the aim of the present study was to evaluate the bioaccumulation and chronic 28d lethal and sublethal toxicity of arsenic (As) and zinc (Zn) to both the warmwater-adapted B. sowerbyi and the coldwater-adapted oligochaete Tubifex tubifex for comparison. Arsenic was more toxic to both oligochaete species than Zn. Inter- and intra-species variability in toxicity values of the two test species and other benthic invertebrates was within an order of magnitude. However, B. sowerbyi was the most sensitive species to As even for sediment concentration (EC50: 36.6 ± 2.1 µg/g and 147.1 ± 21.7 µg/g, for B. sowerbyi and T. tubifex, respectively) and for tissue concentration (ER50: 9.2 ± 0.9 µg/g and 887.0 ± 35.0 µg/g, for B. sowerbyi and T. tubifex, respectively). Finally, the Tissue Residue-effects Approach (TRA) using Effective Tissue Residues appears to be a promising way forward in advancing in this since it considers internal body concentrations.
KW - Ecotoxicology
KW - Freshwater macroinvertebrates
KW - Metals
KW - Sediment-spiked toxicity test
KW - Tropics
UR - http://www.scopus.com/inward/record.url?scp=85114298515&partnerID=8YFLogxK
U2 - 10.1016/j.aquatox.2021.105955
DO - 10.1016/j.aquatox.2021.105955
M3 - Article
C2 - 34500378
AN - SCOPUS:85114298515
SN - 0166-445X
VL - 239
JO - Aquatic Toxicology
JF - Aquatic Toxicology
M1 - 105955
ER -