TY - JOUR
T1 - Oxidative stress indicators and trace elements in the blue shark (Prionace glauca) off the east coast of the Mexican Pacific Ocean
AU - Barrera-García, Angélica
AU - O'Hara, Todd
AU - Galván-Magaña, Felipe
AU - Méndez-Rodríguez, Lía C.
AU - Castellini, J. Margaret
AU - Zenteno-Savín, Tania
N1 - Funding Information:
The authors wish to thank all the fishermen in Punta Belcher and Punta Lobos who allowed us to take samples during their working days, and Dr. E. Serviere, Programa de Estudios de Posgrado (CIBNOR) and CONACYT for the support provided to ABG. B. Acosta-Vargas, G. Peña-Armenta, Espectrofotometría de Absorción Atómica (CIBNOR), L. Correa and C. Willeto, Wildlife Toxicology Laboratory at University of Alaska Fairbanks, provided support for trace element analyses; O. Lugo-Lugo, N.O. Olguín-Monroy, Laboratorio de Salud Ambiental y Biomedicina (CIBNOR), provided technical assistance in sample processing for oxidative stress indicators. A. de Anda and V. Labrada-Martagón provided statistical advice. ABG is a recipient of a CONACYT scholarship ( 206958 ). This project was funded by Proyecto Tiburones y Rayas CICIMAR-México , Instituto Politécnico Nacional (COFAA and EDI fellowships to FGM), and CIBNOR ( PC2.0 ; PC0.10 ).
PY - 2012/8
Y1 - 2012/8
N2 - Trace element concentrations and oxidative stress indicators (including production of reactive oxygen species (ROS), antioxidant enzyme activities and oxidative damage) were measured in muscle of blue sharks collected along the west coast of Baja California Sur to determine potential differences by sex and maturity cohorts. Mercury (Hg) concentration in muscle samples from larger sharks (> 200 cm LT) exceeded the permissible limit (> 1 ppm wet weight) for human consumption set by numerous international agencies. Significant differences were found in Hg concentrations (mature > immature; males > females), and in protein carbonyl concentrations (male > female); however, except for carbonyl protein levels, no significant differences by sex or maturity stage were found in the oxidative stress indicators. Differences between sexes and maturity stages in trace element concentration and carbonyl protein levels in blue shark muscle may be related to variations in diet within different cohorts.
AB - Trace element concentrations and oxidative stress indicators (including production of reactive oxygen species (ROS), antioxidant enzyme activities and oxidative damage) were measured in muscle of blue sharks collected along the west coast of Baja California Sur to determine potential differences by sex and maturity cohorts. Mercury (Hg) concentration in muscle samples from larger sharks (> 200 cm LT) exceeded the permissible limit (> 1 ppm wet weight) for human consumption set by numerous international agencies. Significant differences were found in Hg concentrations (mature > immature; males > females), and in protein carbonyl concentrations (male > female); however, except for carbonyl protein levels, no significant differences by sex or maturity stage were found in the oxidative stress indicators. Differences between sexes and maturity stages in trace element concentration and carbonyl protein levels in blue shark muscle may be related to variations in diet within different cohorts.
KW - Blue shark
KW - Maturity status
KW - Oxidative stress
KW - Sex differences
KW - Trace elements
UR - http://www.scopus.com/inward/record.url?scp=84862853632&partnerID=8YFLogxK
U2 - 10.1016/j.cbpc.2012.04.003
DO - 10.1016/j.cbpc.2012.04.003
M3 - Artículo
SN - 1532-0456
VL - 156
SP - 59
EP - 66
JO - Comparative Biochemistry and Physiology - C Toxicology and Pharmacology
JF - Comparative Biochemistry and Physiology - C Toxicology and Pharmacology
IS - 2
ER -