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Fish species composition, tidal migration and feeding on a tidal flat at the Banc d'Arguin, Mauritania

Vonk, J.A. (2001) Fish species composition, tidal migration and feeding on a tidal flat at the Banc d'Arguin, Mauritania. Master's Thesis / Essay, Biology.

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Abstract

The Banc d'Arguin is an area characterised by shallow waters and tidal flats. The relationship between the fish stock on the continental shelf and the Bane d'Arguin is important for the management of the Mauritanian marine living resources. The shallow waters act hereby as a nursery. Nine crustacean, three molluscs and seventeen fish species were found on the tidal flats. The species most found were Callinectes niarginatus (crustacean), Sepia officinalis (cephalopod) and the fish species Sciaena umbra, Diplodus sargus, Dicentrarchus punctatus, Anus heudelotii, Ephippion guttiferum and Umbrina canariensis. These species were migrating and feeding on the tidal flat. Some of the fish specimens were canying roe. At a low location on the tidal flat we caught significantly (p= 0.006) more fish specimens with a sliding net compared to a location higher on the tidal flat. For the fykes there was no difference. The fish species were mainly predating on amphipods, shrimps, bivalves and gastropods. Most of the prey species were intertidal species caught at the tidal flat. The tidal flat areas of the Bane d'Arguin therefore act as feeding grounds for the fish species. It is at this moment not possible to determine a relationship between different conditions on the tidal flats and the number and composition of fish present.

Item Type: Thesis (Master's Thesis / Essay)
Degree programme: Biology
Thesis type: Master's Thesis / Essay
Language: English
Date Deposited: 15 Feb 2018 07:31
Last Modified: 15 Feb 2018 07:31
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/9197

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