18 research outputs found

    Étude comparative des peuplements ichtyologiques de l’Aire Marine ProtĂ©gĂ©e de Joal-Fadiouth et des pĂȘcheries des zones du pourtour non protĂ©gĂ©es Ă  l’exploitation halieutique

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    L'effondrement des stocks de poisson est dĂ» Ă  la surexploitation des peuplements ichtyologiques consĂ©cutifs aux mauvaises pratiques de pĂȘche au SĂ©nĂ©gal. Cette situation a amenĂ© les Ă©cologistes marins et les gestionnaires de l'environnement Ă  rĂ©Ă©valuer les mĂ©thodes traditionnelles de gestion des ressources halieutiques. Pour connaitre la dynamique des peuplements ichtyologiques, nous avons menĂ© une Ă©tude comparative des peuplements ichtyologiques de l’Aire Marine ProtĂ©gĂ©e de Jaol-Fadiouth et des pĂȘcheries des zones non protĂ©gĂ©es Ă  l’exploitation halieutique durant la saison froide 2015. Ainsi, l’exploitation des donnĂ©es de pĂȘches expĂ©rimentales rĂ©alisĂ©es au niveau de 16 stations dans les deux zones a permis de faire l’étude. L’analyse des paramĂštres environnementaux relevĂ©s sur chaque station montre que la zone de l’aire marine protĂ©gĂ©e est similaire Ă  celle des zones non protĂ©gĂ©es Ă  l’exploitation halieutique. Par consĂ©quent, les Ă©ventuelles diffĂ©rences de peuplement ne s'expliquent pas par la variabilitĂ© des paramĂštres physicochimiques. L’analyse de paramĂštres physico-chimiques, des indicateurs de biodiversitĂ© Ă  savoir : la richesse spĂ©cifique, les indices de diversitĂ© de Shannon-Weaver et d’équitabilitĂ© Pielou ont permis de dĂ©terminer les caractĂ©ristiques environnementales, la composition et la nature des peuplements, d'Ă©valuer l'impact des mesures de gestion des diffĂ©rentes zones.   The collapse of fish stocks is due to the overexploitation of fish populations as a result of poor fishing practices in Senegal. This situation has led marine ecologists and environmental managers to re-evaluate traditional methods of managing fishery resources. In order to know the dynamics of the ichthyological populations, we conducted a comparative study of the ichthyological populations of the Jaol-Fadiouth Marine Protected Area and the fisheries of the areas not protected from fishing during the 2015 cold season. Thus, the exploitation of data from experimental fisheries carried out at 16 stations in the two areas allowed the study to be carried out. The analysis of the environmental parameters recorded at each station shows that the area of the marine protected area is similar to that of the areas not protected from fisheries exploitation. Therefore, any differences in population size cannot be explained by the variability of physico-chemical parameters. The analysis of physico-chemical parameters, biodiversity indicators such as species richness, the Shannon-Weaver diversity index and the Pielou equitability index allowed us to determine the environmental characteristics, the composition and the nature of the populations, and to evaluate the impact of the management measures of the different areas

    Production d’alevins de Tilapia (Oreochromis niloticus) avec 3 aliments Ă  base de sous-produits agro-industriels au Nord du SĂ©nĂ©gal

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    L’étude a Ă©tĂ© rĂ©alisĂ©e dans un Ă©tang de la station piscicole de Richard TOLL au Nord du SĂ©nĂ©gal entre 2013 et 2014. Elle a permis de tester la performance de deux aliments Ă  base de sous-produits agro industriels locaux (A1 et A2) Ă  un aliment (A3) importĂ© de la Chine sur la croissance des alevins de tilapia (Oreochromis niloticus) du fleuve SĂ©nĂ©gal. Les qualitĂ©s nutritionnelles des aliments A1, A2 et A3 sur la croissance et le taux de mortalitĂ©s des alevins sont dĂ©terminĂ©s pour chaque aliment. La mĂ©thodologie est accentuĂ©e sur la mesure des paramĂštres physico-chimiques, le suivi de la croissance des alevins et le test en triplicata de ces trois aliments dans des appas de 2m3. Les rĂ©sultats obtenus ont montrĂ© que l’aliment A2 a donnĂ© les meilleures performances que l’aliment A1 avec des croissances moyennes individuelles respectives de 0,21±0,04g/j et 0,12±0,03g/j. Les gains de poids moyens et taux de conversion alimentaire sont respectivement 3,09±0,53g et 1,79±0,26 g pour l’aliment A2 et 1,82±0,45g et 1,64±0,01 g pour l’aliment A1. Statistiquement, les rĂ©sultats obtenus avec l’aliment A2 ne sont pas diffĂ©rents de ceux obtenus avec l’aliment A3 importĂ© de la Chine.© 2015 International Formulae Group. All rights reserved.Mots clĂ©s: Alevins, Oreochromis niloticus, aliment, croissance, performanceEnglish Title:  Production of young Tilapia fish (Oreochromis niloticus) with 3 foods containing under agroindustrial products in the North of SenegalEnglish AbstractThe study was carried out in a pond of the piscicultural station of Richard-TOLL in the North of Senegal between 2013 and 2014. It allowed to test the performance of two food containing local agro industrial by-products (A1 and A2) with a food (A3) imported from China for the growth of young tilapias fish (Oreochromis niloticus) of the Senegal river. Nutritional qualities of the food A1, A2 and A3 on the growth and the death rate of young fish were given for each food. The methodology emphasized on the measure of the physicochemical parameters, the follow-up of the growth of young fish and the test in triplicate of these three food in grabbed of 2 m3.The results obtained showed that A2 food gave the best performances than A1 food with the respective average individual growths of 0, 21±0,04 g/j and 0,12±0,03 g/j. The mean gain of weight and food conversion rate are respectively 3,09±0,53 G and 1,79±0,26 G for A2 food and 1,82±0,45 G and  1,64±0,01 G for A1 food. Statistically analysed, the results obtained with the A2 food are not different from those obtained with the A3 food imported from China.© 2015 International Formulae Group. All rights reserved.Keywords: Fry, Oreochromis niloticus, food, growth, performanc

    Plastic Surgery of Male External Genitalia after a Trauma Caused by a Mill in Rural Area

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    The trauma of the external genital organs is a common urological emergency that can affect the patient's functional and psychosocial prognosis as well as his family. We report a case of direct trauma of the external genitalia of a 27-year-old by a mill, requiring a recover plastic surgery in rural area. The examination at admission revealed a significant damage of penile and scrotal skin, denuding testes and cavernous bodies. A cover plastic surgery was performed. After a year of follow up, the outcome was good

    Long-term fishing impact on the Senegalese coastal demersal resources: diagnosing from stock assessment models

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    For the first time in Senegal, assessments based on both stochastic and deterministic production models were used to draw a global diagnosis of the fishing impact on coastal demersal stocks. Based one national fisheries databases and scientific trawl surveys data: (i) trends in landings since 1971 were examined, (ii) abundance indices of 10 stocks were estimated using linear models fitted to surveys data and commercial catch per unit efforts, and (iii) stock assessments were carried out using pseudo-equilibrium Fox and Pella-Tomlinson models and a Biomass dynamic production model fitted in a Bayesian framework to abundance indices. Most stocks have seen their abundance sharply declining over time. All stocks combined, results of stock assessments suggest a 63% reduction compared to virgin state. Three fifth of demersal stocks are overexploited and excess in fishing effort was estimated until 75% for the worst case. We conclude by suggesting that the fishing of such species must be regulated and an ecosystem approach to fisheries management should be implemented in order to monitor the whole ecosystem

    Evaluation De La Prematurite Superieure Ou Egale A 32 Semaine D’amenorhĂ©e A L’hopital Regional De Ziguinchor Au Sud Du Senegal (Afrique De L’ouest)

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    Introduction: Prematurity is one of the leading causes of neonatal death in Africa. The objective of this work was to assess the preterm birth at the pediatric service of the regional hospital of Ziguinchor. Material and methods: This was a prospective, descriptive and analytical study of the case of hospitalized newborns whose age was between 32 SA to 36SA + 6 days. The study was conducted from May 21, 2013 to May 21, 2014. We included all premature infants at age ≄ 32SA.Those presenting a malformation were not included. We studied maternal socio-demographic, obstetric and neonatal parameters. Results: We have identified 140 newborns out of a total of 342 Preterm births and 2292 maternity births, a prevalence of 40.9% compared to preterm infants and 6.10% in relation to all births. 51.4 percent of mothers came from urban areas, 63.5 percent were between 20 and 34 years of age, not attending school in 45.7 percent, married in 72.9 percent and without work in 94.3 percent. The average gestures represented 3.09 . Arterial hypertension was the most common medical condition (67.7%). The followup was done by a midwife (82.1%) and 23.5% had received at least 4 NPC. Eclampsia and pre-eclampsia (48.9%) and RPM (42.8%) were common obstetric pathologies. The delivery was by caesarian (51.4%), hospital (92.1%), cephalic presentation (80%), with an average weight of 1816.79 g. An RCIU (16.4%), an RPM (61.9%). At birth, a DR (16.4%) was noted due to MMH (43.7%) and transitory tachypnea (50%). Asphyxia was reported in 3.5%. During hospitalization (6.7 days on average), 6.4% had RD caused by infection (77.7%). Other complications were infection (64.4%), hypoglycemia (28.5%), digestive hemorrhage (7.01%). The fatality rate was 7.9% due to infection (63.3%), DR (18%), haemorrhage (9%). The anthropometric measurements at the exit: P 1887.9g, T: 38.3cm, PC: 30.9cm; at 1 month P: 2387.1g, T: 46.6cm, PC: 32.8cm; at 30 months P: 12.1kg, T: 89.5cm, PC: 48.4cm. Conclusion: Moderate preterm birth accounts for almost half of the cases of prematurity in our series. Their optimal management would go through a better obstetric-neonatal collaboration but above all by the installation of kangaroo mother unit

    Cancer de la prostate au Centre Hospitalier Universitaire Aristidie Le Dantec de Dakar : aspects épidemiologiques sur les cinq derniÚres années: Prostate cancer in Aristide Le Dantec hospital of Dakar: epidemiological aspects over the last five years

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    Context and objective. Prostate cancer represents a major public health issue, but data from sub-Saharan Africa are scarce. This study aimed to describe the epidemiological aspects of prostate cancer during the last five years in Aristide Le Decantec hospital of Dakar. Methods. it’s a retrospective and descriptive study involving 5 last years including all patients with histologically confirmed prostate cancer. The studied parameters were: prevalence, incidence, age, clinical stage, lethality and death rate. Results. Two hundred and thirty-three patients were enrolled. The prevalence of prostate cancer during the study period was 0.8%. Depending on the stage, metastatic cancer was the most common form with 45.9% of cases. The new cases were 199 with an average of 39.8 per year. The total incidence of prostate cancer over the study period was 0.7%. The mean age of the patients at the diagnosis time was 68.6 ± 9.2 years. The lethality was 0.5%. The global death rate was 0.9 ‰. The specific death rate was 0.9‰. The annual mortality rate was higher in 2017 (36.4%) compared to other years. Depending on the stage, the death rate was higher in metastatic stages patients. Conclusion. The incidence of prostate cancer is increasing in our medical center. Metastatic forms remain more common with higher death rate. Early detection campaigns for prostate cancer should be considered. Contexte et objectif. Le cancer de la prostate reprĂ©sente un enjeu majeur de santĂ© publique et mais il reste trĂšs peu documentĂ© en Afrique subsaharienne. L’objectif de cette Ă©tude Ă©tait d’évaluer les aspects Ă©pidĂ©miologiques du cancer de la prostate sur les 5 derniĂšres annĂ©es dans notre centre. MĂ©thodes. Il s’agissait d’une Ă©tude documentaire et descriptive sur 5 ans ayant colligĂ© les dossiers de tous les patients avec cancer de la prostate histologiquement confirmĂ©. Les paramĂštres Ă©tudiĂ©s Ă©taient : la prĂ©valence, l’incidence, l’ñge, le stade clinique, la lĂ©talitĂ© et la mortalitĂ©. RĂ©sultats. Deux cent trente-trois patients ont Ă©tĂ© retenus. La prĂ©valence du cancer de la prostate durant la pĂ©riode Ă©tudiĂ©e Ă©tait de 0,8%. En fonction du stade, le stade de cancer mĂ©tastatique Ă©tait prĂ©pondĂ©rant (45,9%). Les nouveaux cas Ă©taient de 199, soit une moyenne de 39,8 nouveaux cas par an. L’incidence totale du cancer de la prostate sur la pĂ©riode Ă©tudiĂ©e Ă©tait de 0,7%. L’ñge moyen des patients au moment du diagnostic Ă©tait de 68,6 ± 9,2 ans. Le taux lĂ©talitĂ© Ă©tait de 0,5%. La mortalitĂ© globale Ă©tait de 0,9‰. Le taux de mortalitĂ© annuelle Ă©tait plus important en 2017 (36,4%) en comparaison aux autres annĂ©es Ă©tudiĂ©es. En fonction du stade, le taux de mortalitĂ© Ă©tait plus important pour les stades mĂ©tastatiques. Conclusion. L’incidence du cancer de la prostate est en augmentation dans notre centre. Les formes mĂ©tastatiques restent prĂ©dominantes assombrissant le pronostic vital. Des campagnes de dĂ©pistage prĂ©coce du cancer de la prostate sont Ă  envisager

    Efficiency of co-management in a small West African fishing harbor: the case of a tiny no-take zone

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    International audienceTo cope with the scarcity of fishery resources and loss of marine and coastal biodiversity in Senegal, local communities have set up, among other things, no-take zone (ZIP), by integrating scientific knowledge. These ZIPs function to conserve the biological and cultural diversity of the coastal zone, rebuild fish stocks, and enhance the livelihoods of local populations. Here, we provide an example of an initiative of co-management that is inexpensive and involved fishermen in one ZIP. First, an oxygen sensor and Doppler current profiler were deployed to monitor dissolved oxygen levels and local sea currents, respectively. Second, 12 scientific fishing operations, combining pelagic and demersal sampling, were carried out. Third, a questionnaire was developed to ascertain the opinions and knowledge of fishermen on local co-management. Large thermal amplitude and oxygen concentrations were recorded, respectively (17–30 °C and 1.5–7.75 mg l-1). The total abundance of fish was higher in the ZIP compared to surrounding areas. Epinephelus aeneus (Serranidae) and Dactylopterus volitans (Dactylopteridae) were the most abundant species inside (28%) and outside the ZIP (22 %), respectively. Local fishermen perceived that ZIP co-management had mixed success, stating a lack of information and unfair access of the harbor fishermen to the ZIP. None of the fisherman associated climate change with the decline in catches, but an increase in the number of Senegalese industrial fishing boats. The local fishermen mostly believe that the establishment of artificial reefs positively enhances local capture rates. ZIP, marine protected areas, and co-management are increasingly gaining support towards the marine conservation of countries in West Africa, with the current study demonstrating the contribution of fishermen to collaborate in committees with administrative agencies and researchers for sustainable use.Pour faire face Ă  la rarĂ©faction des ressources halieutiques et Ă  la perte de la biodiversitĂ© marine et cĂŽtiĂšre au SĂ©nĂ©gal, les communautĂ©s locales ont mis en place, entre autres, des zones d'interdiction de pĂȘche (ZIP), en intĂ©grant les connaissances scientifiques. Ces ZIP ont pour fonction de conserver la diversitĂ© biologique et culturelle de la zone cĂŽtiĂšre, de reconstituer les stocks de poissons et d'amĂ©liorer les moyens de subsistance des populations locales. Nous prĂ©sentons ici un exemple d'initiative de cogestion peu coĂ»teuse impliquant les pĂȘcheurs d'une ZIP. Tout d'abord, un capteur d'oxygĂšne et un profileur de courant Ă  effet Doppler ont Ă©tĂ© dĂ©ployĂ©s pour surveiller les niveaux d'oxygĂšne dissous et les courants marins locaux, respectivement. DeuxiĂšmement, 12 opĂ©rations de pĂȘche scientifique, combinant l'Ă©chantillonnage pĂ©lagique et dĂ©mersal, ont Ă©tĂ© menĂ©es. TroisiĂšmement, un questionnaire a Ă©tĂ© Ă©laborĂ© pour connaĂźtre les opinions et les connaissances des pĂȘcheurs sur la cogestion locale. Une grande amplitude thermique et des concentrations d'oxygĂšne importantes ont Ă©tĂ© enregistrĂ©es, respectivement (17-30 °C et 1,5-7,75 mg l-1). L'abondance totale des poissons Ă©tait plus Ă©levĂ©e dans la ZIP que dans les zones environnantes. Epinephelus aeneus (Serranidae) et Dactylopterus volitans (Dactylopteridae) Ă©taient les espĂšces les plus abondantes Ă  l'intĂ©rieur (28 %) et Ă  l'extĂ©rieur de la ZIP (22 %), respectivement. Les pĂȘcheurs locaux ont estimĂ© que la cogestion de la ZIP avait eu un succĂšs mitigĂ©, faisant Ă©tat d'un manque d'information et d'un accĂšs inĂ©quitable des pĂȘcheurs du port Ă  la ZIP. Aucun pĂȘcheur n'a associĂ© le changement climatique Ă  la baisse des captures, mais Ă  l'augmentation du nombre de bateaux de pĂȘche industrielle sĂ©nĂ©galais. Les pĂȘcheurs locaux croient surtout que l'Ă©tablissement de rĂ©cifs artificiels amĂ©liore les taux de capture locaux. La ZIP, les aires marines protĂ©gĂ©es et la cogestion gagnent de plus en plus de soutien pour la conservation marine des pays d'Afrique de l'Ouest. La prĂ©sente Ă©tude dĂ©montre la contribution des pĂȘcheurs Ă  la collaboration au sein des comitĂ©s avec les agences administratives et les chercheurs pour une utilisation durable

    Efficiency of co-management in a small West African fishing harbor: the case of a tiny no-take zone

    No full text
    International audienceTo cope with the scarcity of fishery resources and loss of marine and coastal biodiversity in Senegal, local communities have set up, among other things, no-take zone (ZIP), by integrating scientific knowledge. These ZIPs function to conserve the biological and cultural diversity of the coastal zone, rebuild fish stocks, and enhance the livelihoods of local populations. Here, we provide an example of an initiative of co-management that is inexpensive and involved fishermen in one ZIP. First, an oxygen sensor and Doppler current profiler were deployed to monitor dissolved oxygen levels and local sea currents, respectively. Second, 12 scientific fishing operations, combining pelagic and demersal sampling, were carried out. Third, a questionnaire was developed to ascertain the opinions and knowledge of fishermen on local co-management. Large thermal amplitude and oxygen concentrations were recorded, respectively (17–30 °C and 1.5–7.75 mg l-1). The total abundance of fish was higher in the ZIP compared to surrounding areas. Epinephelus aeneus (Serranidae) and Dactylopterus volitans (Dactylopteridae) were the most abundant species inside (28%) and outside the ZIP (22 %), respectively. Local fishermen perceived that ZIP co-management had mixed success, stating a lack of information and unfair access of the harbor fishermen to the ZIP. None of the fisherman associated climate change with the decline in catches, but an increase in the number of Senegalese industrial fishing boats. The local fishermen mostly believe that the establishment of artificial reefs positively enhances local capture rates. ZIP, marine protected areas, and co-management are increasingly gaining support towards the marine conservation of countries in West Africa, with the current study demonstrating the contribution of fishermen to collaborate in committees with administrative agencies and researchers for sustainable use.Pour faire face Ă  la rarĂ©faction des ressources halieutiques et Ă  la perte de la biodiversitĂ© marine et cĂŽtiĂšre au SĂ©nĂ©gal, les communautĂ©s locales ont mis en place, entre autres, des zones d'interdiction de pĂȘche (ZIP), en intĂ©grant les connaissances scientifiques. Ces ZIP ont pour fonction de conserver la diversitĂ© biologique et culturelle de la zone cĂŽtiĂšre, de reconstituer les stocks de poissons et d'amĂ©liorer les moyens de subsistance des populations locales. Nous prĂ©sentons ici un exemple d'initiative de cogestion peu coĂ»teuse impliquant les pĂȘcheurs d'une ZIP. Tout d'abord, un capteur d'oxygĂšne et un profileur de courant Ă  effet Doppler ont Ă©tĂ© dĂ©ployĂ©s pour surveiller les niveaux d'oxygĂšne dissous et les courants marins locaux, respectivement. DeuxiĂšmement, 12 opĂ©rations de pĂȘche scientifique, combinant l'Ă©chantillonnage pĂ©lagique et dĂ©mersal, ont Ă©tĂ© menĂ©es. TroisiĂšmement, un questionnaire a Ă©tĂ© Ă©laborĂ© pour connaĂźtre les opinions et les connaissances des pĂȘcheurs sur la cogestion locale. Une grande amplitude thermique et des concentrations d'oxygĂšne importantes ont Ă©tĂ© enregistrĂ©es, respectivement (17-30 °C et 1,5-7,75 mg l-1). L'abondance totale des poissons Ă©tait plus Ă©levĂ©e dans la ZIP que dans les zones environnantes. Epinephelus aeneus (Serranidae) et Dactylopterus volitans (Dactylopteridae) Ă©taient les espĂšces les plus abondantes Ă  l'intĂ©rieur (28 %) et Ă  l'extĂ©rieur de la ZIP (22 %), respectivement. Les pĂȘcheurs locaux ont estimĂ© que la cogestion de la ZIP avait eu un succĂšs mitigĂ©, faisant Ă©tat d'un manque d'information et d'un accĂšs inĂ©quitable des pĂȘcheurs du port Ă  la ZIP. Aucun pĂȘcheur n'a associĂ© le changement climatique Ă  la baisse des captures, mais Ă  l'augmentation du nombre de bateaux de pĂȘche industrielle sĂ©nĂ©galais. Les pĂȘcheurs locaux croient surtout que l'Ă©tablissement de rĂ©cifs artificiels amĂ©liore les taux de capture locaux. La ZIP, les aires marines protĂ©gĂ©es et la cogestion gagnent de plus en plus de soutien pour la conservation marine des pays d'Afrique de l'Ouest. La prĂ©sente Ă©tude dĂ©montre la contribution des pĂȘcheurs Ă  la collaboration au sein des comitĂ©s avec les agences administratives et les chercheurs pour une utilisation durable

    Efficiency of co-management in a small West African fishing harbor: the case of a tiny no-take zone

    No full text
    International audienceTo cope with the scarcity of fishery resources and loss of marine and coastal biodiversity in Senegal, local communities have set up, among other things, no-take zone (ZIP), by integrating scientific knowledge. These ZIPs function to conserve the biological and cultural diversity of the coastal zone, rebuild fish stocks, and enhance the livelihoods of local populations. Here, we provide an example of an initiative of co-management that is inexpensive and involved fishermen in one ZIP. First, an oxygen sensor and Doppler current profiler were deployed to monitor dissolved oxygen levels and local sea currents, respectively. Second, 12 scientific fishing operations, combining pelagic and demersal sampling, were carried out. Third, a questionnaire was developed to ascertain the opinions and knowledge of fishermen on local co-management. Large thermal amplitude and oxygen concentrations were recorded, respectively (17–30 °C and 1.5–7.75 mg l-1). The total abundance of fish was higher in the ZIP compared to surrounding areas. Epinephelus aeneus (Serranidae) and Dactylopterus volitans (Dactylopteridae) were the most abundant species inside (28%) and outside the ZIP (22 %), respectively. Local fishermen perceived that ZIP co-management had mixed success, stating a lack of information and unfair access of the harbor fishermen to the ZIP. None of the fisherman associated climate change with the decline in catches, but an increase in the number of Senegalese industrial fishing boats. The local fishermen mostly believe that the establishment of artificial reefs positively enhances local capture rates. ZIP, marine protected areas, and co-management are increasingly gaining support towards the marine conservation of countries in West Africa, with the current study demonstrating the contribution of fishermen to collaborate in committees with administrative agencies and researchers for sustainable use.Pour faire face Ă  la rarĂ©faction des ressources halieutiques et Ă  la perte de la biodiversitĂ© marine et cĂŽtiĂšre au SĂ©nĂ©gal, les communautĂ©s locales ont mis en place, entre autres, des zones d'interdiction de pĂȘche (ZIP), en intĂ©grant les connaissances scientifiques. Ces ZIP ont pour fonction de conserver la diversitĂ© biologique et culturelle de la zone cĂŽtiĂšre, de reconstituer les stocks de poissons et d'amĂ©liorer les moyens de subsistance des populations locales. Nous prĂ©sentons ici un exemple d'initiative de cogestion peu coĂ»teuse impliquant les pĂȘcheurs d'une ZIP. Tout d'abord, un capteur d'oxygĂšne et un profileur de courant Ă  effet Doppler ont Ă©tĂ© dĂ©ployĂ©s pour surveiller les niveaux d'oxygĂšne dissous et les courants marins locaux, respectivement. DeuxiĂšmement, 12 opĂ©rations de pĂȘche scientifique, combinant l'Ă©chantillonnage pĂ©lagique et dĂ©mersal, ont Ă©tĂ© menĂ©es. TroisiĂšmement, un questionnaire a Ă©tĂ© Ă©laborĂ© pour connaĂźtre les opinions et les connaissances des pĂȘcheurs sur la cogestion locale. Une grande amplitude thermique et des concentrations d'oxygĂšne importantes ont Ă©tĂ© enregistrĂ©es, respectivement (17-30 °C et 1,5-7,75 mg l-1). L'abondance totale des poissons Ă©tait plus Ă©levĂ©e dans la ZIP que dans les zones environnantes. Epinephelus aeneus (Serranidae) et Dactylopterus volitans (Dactylopteridae) Ă©taient les espĂšces les plus abondantes Ă  l'intĂ©rieur (28 %) et Ă  l'extĂ©rieur de la ZIP (22 %), respectivement. Les pĂȘcheurs locaux ont estimĂ© que la cogestion de la ZIP avait eu un succĂšs mitigĂ©, faisant Ă©tat d'un manque d'information et d'un accĂšs inĂ©quitable des pĂȘcheurs du port Ă  la ZIP. Aucun pĂȘcheur n'a associĂ© le changement climatique Ă  la baisse des captures, mais Ă  l'augmentation du nombre de bateaux de pĂȘche industrielle sĂ©nĂ©galais. Les pĂȘcheurs locaux croient surtout que l'Ă©tablissement de rĂ©cifs artificiels amĂ©liore les taux de capture locaux. La ZIP, les aires marines protĂ©gĂ©es et la cogestion gagnent de plus en plus de soutien pour la conservation marine des pays d'Afrique de l'Ouest. La prĂ©sente Ă©tude dĂ©montre la contribution des pĂȘcheurs Ă  la collaboration au sein des comitĂ©s avec les agences administratives et les chercheurs pour une utilisation durable

    Stock assessment of round sardinella (Sardinella aurita) caught along the coast of Senegal

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    The LBB and CMSY/BMS methods were used to evaluate the state of the stock of round sardinella (Sardinella aurita) based on national data from the Exclusive Economic Zone (EEZ) of Senegal. However, this migratory stock is shared between Morocco, Mauritania, Senegal, and The Gambia. Still, the results strongly suggest that the round sardinella stock is overfished, confirming the results of previous studies of this stock. Measures need to be taken to reduce the fishing effort targeting this resource to allow its biomass to rebuild
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