~ 164 ~  International Journal of Fisheries and Aquatic Studies 2020; 8(1): 164-171  E-ISSN: 2347-5129 P-ISSN: 2394-0506 (ICV-Poland) Impact Value: 5.62 (GIF) Impact Factor: 0.549 IJFAS 2020; 8(1): 164-171 © 2020 IJFAS www.fisheriesjournal.com Received: 06-11-2019 Accepted: 10-12-2019 Mor Gueye Institut Sénégalais de Recherche Agricole (ISRA), Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Pôle de Recherche de Hann (PRH), BP 2241, Dakar – Senegal Dr. Massal Fall UFR Gestion des Ressources Halieutiques, Pêche et Aquaculture – Université du Sine Saloum El Hâdj Ibrahima Niasse (USSEIN) – Campus de Fatick, Senegal PR Malick Diouf Université Cheikh Anta Diop de Dakar (UCAD) – Institut Universitaire de Pêche et d’Aquaculture (IUPA) – BP 45 784 – Dakar, Senegal Dr. Bocar S Balde Institut Sénégalais de Recherche Agricole (ISRA), Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Pôle de Recherche de Hann (PRH), BP 2241, Dakar – Senegal Corresponding Author: Mor Gueye Institut Sénégalais de Recherche Agricole (ISRA), Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Pôle de Recherche de Hann (PRH), BP 2241, Dakar – Senegal Characterization of artisanal bait fishing using juveniles of round Sardinella (Sardinella aurita) and flat Sardinella (Sardinella maderensis) off Hann Bay (Dakar region, Senegal) Mor Gueye, Dr. Massal Fall, PR Malick Diouf and Dr. Bocar S Balde Abstract The present study is an attempt to characterize the fishing activity of Sardinella aurita and Sardinella maderensis juveniles according to the type of vessels, gears, areas, depths and fishing periods at Hann Bay, in the region of Dakar, Senegal. The results showed that landings of these juveniles are mostly made of purse seines. The generalized linear model (GLM) implemented showed that the abundance of catches of juveniles of both species varies monthly, from one season to another, depending on the types of fishing gear and at different depths. In established histograms, ¾ of measured individuals have very small sizes with lower modes to heights prohibited by the Code of marine fisheries of Senegal in progress. This work will serve as a benchmark for proposing deterrent mitigation measures, especially since it is an abuse of juveniles (individuals who have not reached the size of first sexual maturity and who therefore would not have yet reproduced). Keywords: Juveniles, Sardinellas, Senegal, overexploitation, size structure, spatiotemporal variability Introduction Senegalese marine waters in West Africa are characterized by their richness in fishery resources given their particular hydrodynamics, geomorphology and favorable local climate [1] . Fishing is one of the most important economic activities with nearly 200 billion FCFA (local currency, 1 € = 656 FCFA) of revenue per year and more than 600,000 direct and indirect jobs [2] . It also plays a crucial role in local population feeding with an average contribution of about 70% in the dietary intake of animal protein and an average fish consumption of 26 kg per capita per year [3] . The small-scale fisheries sector provides more than 80% of fish production. It ensures the supply of the domestic market and over 50% of the needs of fisheries products export industries. Nearly 85% of fish landings are represented by small coastal pelagic resources, consisting mainly of round and flat sardinellas (Sardinella aurita and Sardinella maderensis, respectively), bonga or ethmalose (Ethmalosa fimbriata), Atlantic horse mackerels (Trachurus trece and Trachurus trachurus), false scad (Caranx rhonchus) and Atlantic chub mackerel (Scomber scolias) and anchovy (Engraulis encrasicolus) [4] . In Senegal, the two species of Sardinella represent 83% of the landings of these small coastal pelagic resources [5] . The site of Hann is located in the peninsula of Cape Verde, actually Region of Dakar, capital of the country. It has become a national reference an important artisanal fishery products landing site, like others such as Saint-Louis and Kayar in the North, Mbour and Joal in the Centre. Juveniles of small coastal pelagic fish, particularly round and flat Sardinellas, are of great importance among the landed products. The fishing of these fringes is an old activity which purpose is very varied. Indeed, for the artisanal sector, these juveniles can be used as bait or be transformed into products known as "tambadiang". The pole-and-line tuna vessels, which range among industrial fleets, use them as bait from a direct or indirect fishing while local manufacturers produce from them as raw material fish meal, fish oil and other vitamin and mineral complexes (VMC) for animal feeding: poultry, pigs as for aquaculture purposes. Finally, small sardines can also be self-consumed, sold to those who have small fry consumption habits or fail to buy bigger fish due to poverty. This special form of fishing of