SciELO - Scientific Electronic Library Online

 
vol.33 issue2SPATIO-TEMPORAL PATTERNS IN THE MICROBIOLOGICAL CONDITION OF COMMUNITY WATER SOURCES AND THREATS TO FAMILY HEALTH IN SEASONAL WATERSHEDS OF THE BAJO BALSAS (MEXICO)HYDROCHEMISTRY AND EMERGING POLLUTANTS IN URBAN-INDUSTRIAL WASTEWATER OF MORELIA, MICHOACAN, MEXICO author indexsubject indexsearch form
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • Have no similar articlesSimilars in SciELO

Share


Revista internacional de contaminación ambiental

Print version ISSN 0188-4999

Abstract

BAUTISTA-COVARRUBIAS, Juan Carlos et al. CHOLINESTERASE ACTIVITY IN CRASSOSTREA sp. OF NAYARIT (NW MEXICO) COASTAL WATERS. Rev. Int. Contam. Ambient [online]. 2017, vol.33, n.2, pp.215-220. ISSN 0188-4999.  http://dx.doi.org/10.20937/rica.2017.33.02.03.

Cholinesterases (ChE) have been suggested as biomarkers of the presence of organophosphorus insecticides (OP). The activities of these enzymes were determined in abductor muscle, gills and labial palps of oysters collected during the rainy and the dry seasons at eight points of the coastal zone of Nayarit state (NW Mexico), aiming to determine if their variability is related to geographic and seasonal differences in the use of OP. At all stations, ChE mean activity was lower in the dry than in the rainy season, and the muscle had consistently lower values than gills and labial palps. Lower activities were found in Bahía de Banderas, in the southern part of the state, than in the northern stations. This may be explained by the year-round use of OP insecticides in the southern part of the state, whereas herbicides are the most common pesticides used in agricultural areas draining into the northern stations during the rainy season.

Keywords : esterases; tissue-related differences; seasonal differences; geographic differences; organophosphorus insecticides.

        · abstract in Spanish     · text in English     · English ( pdf )