TY - JOUR
T1 - Paracyclops chiltoni inhabiting water highly contaminated with arsenic: water chemistry, population structure, and arsenic distribution within the organism
AU - Mendoza-Chávez , Yadira J.
AU - Uc-Castillo , José L.
AU - Cervantes-Martínez, Adrián
AU - Gutiérrez-Aguirre, Martha A.
AU - Castillo-Michel, Hiram
AU - Loredo-Portales, René
AU - Sen Gupta, Bhaskar
AU - Martínez-Villegas, Nadia
N1 - Funding Information:
The authors thank the Royal Society (Grant No. NA140182) for financial support. This research used resources of the Advanced Light Source, a U.S. DOE Office of Science User Facility under contract no. DE-AC02-05CH11231. The authors also thank Dr. Sirine Fakra Research Scientist at Photon Science Operations, Laboratorio de Limnolog?a y Ecolog?a Tropical of UQRoo-Cozumel, Laboratorio de Geoqu?mica Ambiental of Centro de Geociencias-UNAM, El Colegio de la Frontera Sur de Chetumal, as well as Laboratorio de Petrof?sica, LANBAMA and LINAN from IPICYT and Dr. Roberto Rico-Mart?nez, Dr. Isidoro Rubio-Franchini and Dr. Marcelo Silva-Briano for training and facility access. Y.M.C. and N.M.V. are thankful to CONACYT for a Ph.D. scholarship No. 575862 and Grant No. 7073, respectively.
Funding Information:
The authors thank the Royal Society (Grant No. NA140182 ) for financial support. This research used resources of the Advanced Light Source, a U.S. DOE Office of Science User Facility under contract no. DE-AC02-05CH11231 . The authors also thank Dr. Sirine Fakra Research Scientist at Photon Science Operations, Laboratorio de Limnología y Ecología Tropical of UQRoo-Cozumel, Laboratorio de Geoquímica Ambiental of Centro de Geociencias-UNAM, El Colegio de la Frontera Sur de Chetumal, as well as Laboratorio de Petrofísica, LANBAMA and LINAN from IPICYT and Dr. Roberto Rico-Martínez, Dr. Isidoro Rubio-Franchini and Dr. Marcelo Silva-Briano for training and facility access. Y.M.C. and N.M.V. are thankful to CONACYT for a Ph.D. scholarship No. 575862 and Grant No. 7073 , respectively.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/9/1
Y1 - 2021/9/1
N2 - We investigated population structure and arsenic bioaccumulation and distribution in zooplankton inhabiting highly contaminated freshwater with arsenic. We collected water and zooplankton samples over a 4 year period, determined environmental temperature as well as water temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), oxidation-reduction potential (ORP), dissolved oxygen (DO), major cations and anions and total arsenic concentration. We identified zooplankton species and determined their abundance, length, sex ratios, and arsenic bioaccumulation and distribution in exposed organisms. At the study site, an extremophile, Paracyclops chiltoni, was found to survive in an environment with high concentration of arsenic, sulfate and fluoride in freshwater as a well-adapted organism. Results showed that the average arsenic concentration in freshwater was 53.64 ± 10.58 mg/L. Exposed organisms of Paracyclops chiltoni showed arsenic accumulation (up to 9.6 ± 5.4 mgAs/kg) in its body, likely in the digestive tract as well as typical abundance and length, which showed a relationship to environmental temperature and oxic conditions in freshwater. Metallotolerant copepods might help to better understand if arsenic methylation processes occur in freshwater aquatic organisms.
AB - We investigated population structure and arsenic bioaccumulation and distribution in zooplankton inhabiting highly contaminated freshwater with arsenic. We collected water and zooplankton samples over a 4 year period, determined environmental temperature as well as water temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), oxidation-reduction potential (ORP), dissolved oxygen (DO), major cations and anions and total arsenic concentration. We identified zooplankton species and determined their abundance, length, sex ratios, and arsenic bioaccumulation and distribution in exposed organisms. At the study site, an extremophile, Paracyclops chiltoni, was found to survive in an environment with high concentration of arsenic, sulfate and fluoride in freshwater as a well-adapted organism. Results showed that the average arsenic concentration in freshwater was 53.64 ± 10.58 mg/L. Exposed organisms of Paracyclops chiltoni showed arsenic accumulation (up to 9.6 ± 5.4 mgAs/kg) in its body, likely in the digestive tract as well as typical abundance and length, which showed a relationship to environmental temperature and oxic conditions in freshwater. Metallotolerant copepods might help to better understand if arsenic methylation processes occur in freshwater aquatic organisms.
KW - Hydrogeochemistry
KW - Metallotolerant
KW - Paracyclops chiltoni
KW - Water pollution
KW - Zooplankton
UR - http://www.scopus.com/inward/record.url?scp=85107148416&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2021.117155
DO - 10.1016/j.envpol.2021.117155
M3 - Article
C2 - 33933779
SN - 0269-7491
VL - 284
JO - Environmental Pollution
JF - Environmental Pollution
M1 - 117155
ER -