TY - JOUR
T1 - Trace metals in two wild populations of the squalid callista clam (Megapitaria squalida) in the Southeastern Gulf of California, Mexico
AU - Sepúlveda, Carlos Humberto
AU - Góngora-Gómez, Andrés Martín
AU - Pérez-álvarez, Sandra
AU - Rodríguez-González, Hervey
AU - Muñoz-Sevilla, Norma Patricia
AU - Villanueva-Fonseca, Brenda Paulina
AU - Hernández-Sepúlveda, Juan Antonio
AU - García-Ulloa Gómez, Manuel
N1 - Publisher Copyright:
© 2020, Centro de Ciencias de la Atmosfera, UNAM. All rights reserved.
PY - 2020
Y1 - 2020
N2 - The squalid callista clam (Megapitaria squalida) is a popular raw seafood item for human consumption; however, as a filter feeder, this clam accumulates heavy metals from natural and anthropogenic sources. The concentrations of copper (Cu), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), and mercury (Hg) in sediments and the soft tissues of M. squalida from two sites on the southeastern coast of the Gulf of California, Mexico, were evaluated from April 2016 to April 2017 on a monthly basis. The metal concentrations in sediments from both sites did not exceed the Mexican and international regulations. Concentrations of Cd and Pb in the clams from Altata bay (2.49 and 5.68 µg/g dw, respectively) and Agiabampo bay (2.38 and 5.54 µg/g dw, respectively) exceeded the permissible limits recommended by Mexican sanitary regulations, thus representing a threat to human health. The higher values of Cd, As, and Hg obtained for the biota sediment accumulation factor in both sampling areas indicate that squalid callista is a strong accumulator of these metals. The metal burdens in sediments and M. squalida soft tissues are influenced by chemicals from agriculture and aquaculture, as well as urban sewage disposal near both sites. This study brings useful information on metal bioaccumulation in one of the most important commercial clam species on the Pacific coast.
AB - The squalid callista clam (Megapitaria squalida) is a popular raw seafood item for human consumption; however, as a filter feeder, this clam accumulates heavy metals from natural and anthropogenic sources. The concentrations of copper (Cu), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), zinc (Zn), arsenic (As), and mercury (Hg) in sediments and the soft tissues of M. squalida from two sites on the southeastern coast of the Gulf of California, Mexico, were evaluated from April 2016 to April 2017 on a monthly basis. The metal concentrations in sediments from both sites did not exceed the Mexican and international regulations. Concentrations of Cd and Pb in the clams from Altata bay (2.49 and 5.68 µg/g dw, respectively) and Agiabampo bay (2.38 and 5.54 µg/g dw, respectively) exceeded the permissible limits recommended by Mexican sanitary regulations, thus representing a threat to human health. The higher values of Cd, As, and Hg obtained for the biota sediment accumulation factor in both sampling areas indicate that squalid callista is a strong accumulator of these metals. The metal burdens in sediments and M. squalida soft tissues are influenced by chemicals from agriculture and aquaculture, as well as urban sewage disposal near both sites. This study brings useful information on metal bioaccumulation in one of the most important commercial clam species on the Pacific coast.
KW - Chocolata clam
KW - Metals bioaccumulation
KW - Sediments
KW - Sinaloa
KW - Toxicology
UR - http://www.scopus.com/inward/record.url?scp=85089629090&partnerID=8YFLogxK
U2 - 10.20937/RICA.53565
DO - 10.20937/RICA.53565
M3 - Artículo
AN - SCOPUS:85089629090
SN - 0188-4999
VL - 36
SP - 667
EP - 676
JO - Revista Internacional de Contaminacion Ambiental
JF - Revista Internacional de Contaminacion Ambiental
IS - 3
ER -