Adaptation of Bivalve Molluscs to Environmental Conditions in the Coastal Region of El Jadida (Morocco): Case of Mytilus Galloprovincialis

Autor:	Ferssiwi Abdesslam, Bitar Abdelali, Massar Redouane, Essedaoui Aafaf, Messaoudi Abdelfettah
Rok vydání:	2017
Předmět:	Fishery Condition index Low salinity biology Ecology Environmental science Seawater Mussel Industrial pollution biology.organism_classification Effluent Environmental stress Mytilus
Zdroj:	European Scientific Journal, ESJ. 13:226
ISSN:	1857-7431 1857-7881
Popis:	The aim of this study is to assess the impact of industrial pollution on the growth and reproduction of the mussel Mytilus galloprovincialis from coastal region of El Jadida (Morocco). To this aim, three stations (S1, S2 and S3) are chosen according to their proximity to the industrial effluents of the chemical complex. The seawater and mussels (N = 100/ station) samples have been randomly and monthly collected for a period of 6 months (February-July 16). Mussels are distributed in 6 classes of size and measures of condition index and gonadic index are performed in the most common size classes. The results of the analysis of physicochemical parameters of the water show spatio-temporal variations with an acidic pH, high temperature and low salinity in the station near of industrials effluents. Regarding condition index and the gonadic index, there is no significant difference between the mussels collected from the reference station (S2) and the polluted station (S3). This can be explained partly by the adoption of a strategy of adaptation to the environmental stress caused by the industrial pollution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8a4cb2823259e0d6f1f879c6abfc8b0a https://doi.org/10.19044/esj.2017.v13n18p226 Zobrazit plný text záznamu