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Impacts of mineral oil and synthetic lubricant on the trophic diversity of marine nematode community: Results from Microcosm Experiments

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Title Impacts of mineral oil and synthetic lubricant on the trophic diversity of marine nematode community: Results from Microcosm Experiments
 
Creator Louati, Hela
Sellami, Badreddine
Hannachi, Amel
Soltani, Amel
SALEM, Fida Ben
Essid, Naceur
Aissa, Patricia
Hamouda, Beyrem
Mahmoudi, Ezzeddine
 
Subject Free-living nematodes
Hydrocarbons
Lubricant oils
Sediment contamination
Trophic structure
Microcosm
 
Description 1708-1717
The effects of two lubricating oils on the trophic diversity of a nematode
community of a Tunisian lagoon were investigated in a microcosm experiment.
Sediment from a pristine site in Ghar El Melh lagoon (Western
Mediterranean) was treated with mineral oil (Mobil 20 W-50), a
synthetic lubricant (Mobil 0 W-40), the same two lubricants after use in a
vehicle. Univariate analysis showed significant differences between univariate
indices for trophic structure of nematode assemblages from undisturbed control
and those from lubricant treatments. Trophic index (∑θ2) and the 1B/2A ratio
decreased in all microcosms treated with mineral oil or synthetic lubricant.
Results from multivariate analyses of the trophic group abundance data
demonstrated that the responses of nematode were dependent on the type of lubricant
(mineral or synthetic, "clean" or "used") used for the
sediment contamination. Non-selective deposit feeders (1B), most abundant in
control microcosm, were very much affected and their abundance decreased
significantly in response to oil contamination. Selective deposit feeders (1A)
increased in response to the two types of lubricants and seemed more resistant
to lubricant contamination.
 
Date 2016-06-27T10:50:37Z
2016-06-27T10:50:37Z
2014-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34494
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(9) [September 2014]