Length-weight relationship and condition factor of Chrysichythys nigrodigitatus and Schilbe mystus in Erelu Lake, Oyo State, Nigeria

Author(s): Kareem OK, Olanrewaju AN, Orisasona O

Abstract

This study focuses, for the first time, on the presence of plastic debris in the stomach contents of large pelagic fish (Xiphias gladius, Thunnus thynnus and Thunnus alalunga) caught in the Mediterranean Sea between 2012 and 2013. Results highlighted the ingestion of plastics in the 18.2% of samples. The plastics ingested were microplastics (<5 mm), mesoplastics (5–25 mm) and macroplastics (>25 mm).

These preliminary results represent an important initial phase in exploring two main ecotoxicological aspects: (a) the assessment of the presence and impact of plastic debris on these large pelagic fish, and (b) the potential effects related to the transfer of contaminants on human health.

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