Bioaccumulation and distribution of organochlorine residues across the food web in Lagos Lagoon, Nigeria

Simple item page
dc.contributor.authorAkinsanya, B.
dc.contributor.authorAlani, R.
dc.contributor.authorUkwa, U.
dc.contributor.authorSaliu, J.
dc.date.accessioned2019-10-14T07:41:59Z
dc.date.available2019-10-14T07:41:59Z
dc.date.issued2016
dc.descriptionStaff publicationsen_US
dc.description.abstractEighteen organochlorine pesticide (OCP) residues were measured in the water, sediment, plankton, benthic invertebrates and fish in various sections of the Lagos Lagoon in 2014 to investigate their bioaccumulation and distribution in the food web. The analysis was done using gas chromatography with an electron capture detector. The concentrations of OCPs in water and sediment ranged from 0.00 to 2.24 μg kg−1 and 0.00 to 1 673.57 μg kg−1, respectively. The sediment had the highest deposition of OCPs, with a total concentration of 2 953.84 μg kg−1. Lindane and heptachlor epoxide had the highest mean concentrations in the sediment, 1 673.57 μg kg−1 and 1 122.74 μg kg−1, respectively, while other OCPs were also found in the biota. Bentho-pelagic fishes had the highest biota-sediment accumulation factor (BSAF) in nine OCP residues, ranging from 1 to 32, and benthic invertebrates had the highest BSAF in three OCP residues, ranging from 1 to 91. The trend in total concentration of OCPs in the lagoon was sediment > Melicertus kerathurus > Eleotris soaresi > Pomadasys jubelini > Tilapia guineensis > Callinectes amnicola > plankton > water. The transfer of organochlorine residues in the food chain and its distribution in the trophic levels was influenced by habitat, environmental conditions, feeding habit and biochemical composition of individual populations. The total residual concentration of OCPs in shellfish and fish ranged between 0.16 ppm and 0.69 ppm. This concentration is quite high compared to the Federal Ministry of Environment limit of <0.01 ppm, and can be harmful if the trend is not checked. Continuous monitoring procedures need to be put in place for environmental safety.en_US
dc.identifier.citationAkinsanya, B., Alani, R., Ukwa, U. and Saliu, J. (2016). Bioaccumulation and distribution of organochlorine residues across the food web in Lagos Lagoon, Nigeria.en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/6337
dc.language.isoenen_US
dc.publisherAFRICAN JOURNAL OF AQUATIC SCIENCEen_US
dc.subjectBiotaen_US
dc.subjectGas chromatographyen_US
dc.subjectPesticideen_US
dc.subjectSedimenten_US
dc.subjectResearch Subject Categories::NATURAL SCIENCESen_US
dc.titleBioaccumulation and distribution of organochlorine residues across the food web in Lagos Lagoon, Nigeriaen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
BIOACCUMULATION AND DISTRIBUTION OF ORGANOCHLORINES.pdf
Size:
560.29 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Zoology-Scholarly Publications