Tekou Ngunte, M.J Peyieno, Yantcho Tahon, B. R. Tamgno, F. Tchoumbougnang
{"title":"Situation of smoked freshwater fish sold in the markets of Yaoundé city (Central Region of Cameroon) and evaluation of control methods against their insect pests during storage","authors":"Tekou Ngunte, M.J Peyieno, Yantcho Tahon, B. R. Tamgno, F. Tchoumbougnang","doi":"10.58697/ajter020103","DOIUrl":"https://doi.org/10.58697/ajter020103","url":null,"abstract":"The smoking, storage and conservation of smoked fish remain the most efficient means of ensuring the almost permanent availability of seasonal fishing products. However, stored smoked fish can be infested by insect pests. The aim of this study was to present the situation of smoked fishes sold in the city of Yaoundé and the methods used by the traders to control insect pests. For this purpose, a study was conducted from October to December 2022 in seven markets in Yaoundé where 65 traders were interviewed mainly on their activities, the origin of smoked fishes and the methods used to control insect pests. The inventory and the quantity of smoked fishes was made in different markets. The storage tools were inspected and the samples of infested smoked fish (commons names) (Catfish, Kanga, Carp, Tilapia, Eel fish, Redtail) and samples of apparently not infested fish (Catfish, Kanga, Carp) were bought from traders according to availability and brought back to laboratory. In the Laboratory, the identification of insect pests was done, the number of insect and the galleries of fish’s collection was counted. It emerges from this study that 80.37% traders are women; according to the age group, 41.44% of traders are between [41-50] years old. 53.67% of traders have a primary education level. Cardboard boxes are the most used tools in fish storage (100%). Six (6) freshwater smoked fish are sold and catfish are the most represented with 2,604 boxes of 50 kg. Dermestes maculatus De Geer 1774 (Coleoptera: Dermestidae) (221 larvae and 54 adults) and Necrobia rufipes De Geer 1775 (Coleoptera: Cleridae) (65 larvae and 37 adults) are the insects pests. Catfish is the smoked fish that revealed the largest number of galleries (86). The chemicals used by traders are Rambo (14.10%) and DD force (24.36%). Mayo-Danay provides 49.86% of smoked fish sold in Yaoundé markets. The ANOVA and Duncan tests have shown that significant differences are observed in the various storage tools and control methods used by traders in the various Yaoundé markets to protect smoked fish from insect pests (p<0.001).","PeriodicalId":155459,"journal":{"name":"African Journal of Tropical Entomology Research","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115064466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Caractérisation et valorisation alimentaire des chenilles d’Imbrasia truncata (Aurivillius, 1908) au Congo-Brazzaville","authors":"Germain Mabossy-Mobouna","doi":"10.58697/ajter020102","DOIUrl":"https://doi.org/10.58697/ajter020102","url":null,"abstract":"Comme dans d’autres pays d’Afrique subsaharienne, le problème de la malnutrition inhérent à l’insécurité alimentaire se pose avec acuité au Congo-Brazzaville. Des nombreuses suggestions préconisent la consommation des certains aliments de récoltes tels que les chenilles. Si une information de base est à présent disponible concernant la diversité des chenilles consommées en République du Congo, nous ne disposons pas des données solides concernant leur valeur nutritive, la qualité de leur matière grasse et la valeur biologique de leurs protéines. Il est également indispensable de connaître les facteurs limitant leur consommation par la population habitant le territoire congolais. De ce fait, une meilleure connaissance de la qualité nutritionnelle des chenilles Imbrasia truncata doit être entreprise pour stimuler leur consommation par la population congolaise afin d’assurer la prévention de certaines pathologies dues aux carences nutritionnelles. L’objectif général de cette étude était de caractériser les chenilles d’Imbrasia truncata en vue de promouvoir leur consommation et d’augmenter leur valeur alimentaire dans les ménages en République du Congo, pour assurer la sécurité alimentaire de la population congolaise.","PeriodicalId":155459,"journal":{"name":"African Journal of Tropical Entomology Research","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121369627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of diet on the nutritional composition of the desert locust Schistocerca gregaria (Orthoptera: Acrididae)","authors":"Sylvia Mmbone, L. Gohole, F. Wanjala, A. Ronoh","doi":"10.58697/ajter020101","DOIUrl":"https://doi.org/10.58697/ajter020101","url":null,"abstract":"The desert locusts, Schistocerca gregaria have a great history of being used as food. They are rich in proteins, minerals, fibre, and fats. An experiment was conducted to determine the effects of diet on the nutritional composition of desert locusts. They received a diet of wheatgrass, sorghum grass, and green gram leaves respectively. Proximate and mineral composition of mature locusts and feed plants was done using standard methods. The data were subjected to analysis of variance (ANOVA) using a general linear model procedure. Moisture content was significantly higher in locusts reared on the sorghum diet (35.1%) and lowest in the green grams diet (12.9%). Locust reared on green gram diet recorded high protein, fat, and fibre compared to sorghum and wheat diet. Locusts reared on a wheatgrass diet recorded a significantly high amount of carbohydrate (14.3%) and ash (3.20%) compared to sorghum and green gram diet. The highest calculated energy was in locust reared on the green gram diet (2184.95KJ/g) while locust reared on the sorghum diet recorded the least energy 1391KJ/g. Magnesium and Calcium minerals were higher in all the locusts reared on the three diets. The mean values for Phosphorus were significantly lower followed by Copper in all the tested locusts. Locust reared on sorghum leaves recorded a significantly high amount of Potassium. The findings revealed that locusts are highly nutritive and can be reared on locally available feeds and can therefore play a major role in the food and nutritional security of people.","PeriodicalId":155459,"journal":{"name":"African Journal of Tropical Entomology Research","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125683567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}