Document of bibliographic reference 359287

BibliographicReference record

Type
Bibliographic resource
Type of document
Journal article
BibLvlCode
AS
Title
Ecotoxicity of chrysene and phenanthrene on meiobenthic nematodes with a case study of Terschellingia longicaudata: Taxonomics, toxicokinetics, and molecular interactions modelling
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are toxic for humans and marine fauna alike. The current study assessed the impact of PAHs on the migratory behaviour of meiobenthic nematodes collected from the Bizerte lagoon, Tunisia. The experiment lasted for 15 days and was carried in open microcosms, which comprised a lower, contaminated and an upper, uncontaminated compartment. Three treatments were used, for each of them an untreated control was set up: sediment contaminated with chrysene (116 ng g−1 dry weight (DW), with phenanthrene (116 ng g−1 DW) and a mixture of both. The results showed a significant decrease in diversty and abundance in the lower, contaminated compartments compared to the upper zones. The results also highlighted that under an increased stress some species progressively increased in number, these were considered PAH-tolerant species such as Odontophora villoti, some others had an occasionally increased in number were considered as opportunistic species, such as Paracomesoma dubium and the species that showed a progressive decreased in number, such as Metoncholaimus pristiurus and Steineria sp., Terschellingia. longicaudata, and Oncholaimellus sp. were classified as PAH-sensitive. Moreover, an increase in the activity of biochemical biomarkers was observed following the exposure of males and gravid females of T. longicaudata to 29, 58 and 87 ng g−1 DW of chrysene and phenanthrene paralleled by a higher vulnerability of the latter demographic category. Besides, a significant decrease in fertility of females and an increase in pharyngeal sucking power were observed for both types of PAHs considered. The sex ratio was also significantly imbalanced in the favor of males, which suggest that chrysene and phenanthrene affect also the hormone system of T. longicaudata. The high affinities of these PAHs and their molecular interactions with both germ line development protein 3 (GLD-3) and sex-determining protein (SDP) may justify these results and explain the toxicokinetic attributes.
WebOfScience code
https://www.webofscience.com/wos/woscc/full-record/WOS:000878606000002
Bibliographic citation
Badraoui, R.; Allouche, M.; El Ouaer, D.; Siddiqui, A.J.; Ishak, S.; Hedfi, A.; Beyrem, H.; Pacioglu, O.; Rudayni, H.A.; Boufahja, F. (2023). Ecotoxicity of chrysene and phenanthrene on meiobenthic nematodes with a case study of Terschellingia longicaudata: Taxonomics, toxicokinetics, and molecular interactions modelling. Environ. Pollut. 316: 120459. https://dx.doi.org/10.1016/j.envpol.2022.120459
Is peer reviewed
true

Authors

author
Name
Riadh Badraoui
author
Name
Mohamed Allouche
author
Name
Dhia El Ouaer
author
Name
Arif Siddiqui
author
Name
Sahar Ishak
author
Name
Amor Hedfi
author
Name
Hamouda Beyrem
author
Name
Octavian Pacioglu
author
Name
Hassan Rudayni
author
Name
Fehmi Boufahja

Links

referenced creativework
type
DOI
accessURL
https://dx.doi.org/10.1016/j.envpol.2022.120459

Document metadata

date created
2022-11-17
date modified
2022-11-17