Short-term impact of bait digging on intertidal macrofauna of tidal mudflats around the Kneiss Islands (Gulf of Gabès, Tunisia)

Nawfel Mosbahi (1) , Jean-Philippe Pezy (2) , Jean-Claude Dauvin (2) , Lassad Neifar (3)

1 Université de Sfax
2 M2C - Morphodynamique Continentale et Côtière
3 Faculté des Sciences de Sfax

In the Gulf of Gabès (South-eastern Tunisia), polychaete bait digging is widely practiced for recreational and commercial fishing and is an economically significant activity. The present study aims to assess the short-term effects of intertidal bait digging on macrobenthic communities from the Kneiss Islands. Following a protocol with a control station (not impacted) and three impacted stations for polychaete collection, the study was conducted during March and April 2015 at spring tides. After digging, immediate significant decreases were observed in the abundance of total macrofauna as well in numerous families of polychaetes. Control of this activity should be proposed for the future to protect the biodiversity of this intertidal area of high heritage interest.

Keywords: Bait harvesting; Macrofauna diversity; Gulf of Gabès; Polychaetes

Domains: Environmental Sciences; Biodiversity and Ecology

Nawfel Mosbahi, Jean-Philippe Pezy, Jean-Claude Dauvin, Lassad Neifar. Short-term impact of bait digging on intertidal macrofauna of tidal mudflats around the Kneiss Islands (Gulf of Gabès, Tunisia). Aquatic Living Resources, 2015, 28 (2-4), pp.111-118. ⟨10.1051/alr/2016002⟩. ⟨hal-02060428⟩