In Burkina Faso, the availability of <i><span style="font-family:Verdana;">Acacia</span></i><span style="font-family:Verdana;"> </span><i><span style=&q...In Burkina Faso, the availability of <i><span style="font-family:Verdana;">Acacia</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">macrostachya</span></i><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">“</span><span style="font-family:Verdana;">Zamnè</span><span style="font-family:Verdana;">”</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">seeds throughout the year is threatened by the attacks of pests. So, the effectiveness of airtight (hermetic) storage for the preservation of these seeds was evaluated using 20</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">litre plastic jars and 50 kg PICS bags as hermetic containers with 50 kg polypropylene bags as controls. Seeds of </span><i><span style="font-family:Verdana;">Acacia</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">macrostachya</span></i><span style="font-family:Verdana;"> (17.5 kg) were stored in each of these storage devices for six</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">months under ambient conditions in the laboratory. The number of storage pest </span><i><span style="font-family:Verdana;">Bruchidius</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">silaceus</span></i><span style="font-family:Verdana;"> increased significantly in polypropylene bags from 235 to 715 individuals on average/500</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">g of seeds. But in PICS bags and plastic drums, the number of this pest did not vary significantly (191 and 239 individuals on average/500</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">g of seeds for plastic jars and PICS bags respectively). In both hermetic devices, we found few individuals of another major storage pest </span><i><span style="font-family:Verdana;">Caryedon<展开更多
The lack of food security leads us to turn to the riches of the forest, namely non-timber forest products (NTFP) and timber forest products (TFP). In Burkina, these products are a source of income for families, improv...The lack of food security leads us to turn to the riches of the forest, namely non-timber forest products (NTFP) and timber forest products (TFP). In Burkina, these products are a source of income for families, improving their living conditions. Tamarindus indica L. that is a NFTP, is widely used in both rural and urban areas. Unfortunately, tamarind is subject to attack by Caryedon serratus. Its biological activity begins on the fruit before the harvest. The aim of our study is to evaluate some biodemographic parameters of the insect pest C. serratus Olivier. First100 healthy T. indica pods were placed in contact with ten pairs of C. serratus for 24 hours. 25 pods, each carrying a maximum of two eggs, were divided into five batches of 5 pods. Then a pair of C. serratus aged less than 24 h was placed in contact with 4 healthy pods for 24 h. Every day, the pair was removed and transferred to another box containing 4 new healthy pods. A total of 20 replicates were performed. The results showed that C. serratus has an average lifespan of 14 days. However, the female (16 days) lived longer and laid an average of 34 eggs during her lifetime. The egg-laying period lasted 14 days, the number of eggs increased until reaching a maximum peak on the 4<sup>th</sup> day. C. serratus has an embryonic development time of 3 days and an emergence rate of 66.63%. However, the weight of males and females differed significantly (p = 0.0108). We found an intrinsic rate of natural increase of 0.12 and a population doubling time was 5.68 days. These results have enabled us to gain a better understanding of its development cycle and its capacity for regeneration. This allows us to implement control strategies for better stock protection.展开更多
A few studies have highlighted the degradation of shea tree fruits mainly due to insects in Burkina Faso. The insects associated with these non-timber forest products are still poorly known, hence the interest of this...A few studies have highlighted the degradation of shea tree fruits mainly due to insects in Burkina Faso. The insects associated with these non-timber forest products are still poorly known, hence the interest of this study. The objective of the study is to make a qualitative inventory of the biodiversity of insect pests of shea fruits during the ripening period in two different ecosystems. It was carried out in 2021 in three locations of the Ziro province. 30 shea fruit trees distributed in 9 sites listed in agrosystems and protected areas were selected for monitoring and collecting insects infested with the fruits. The inventory identified 25 species in 13 families clustered in 5 orders. The order of Diptera, composed of 6 families with 15 species recorded, is the most dominant order in this diversity. Among the different families, 3 of them, Calliphoridae, Tephritidae and Muscidae, present at least 3 species each. 7 species are mainly associated with fruit damage with a predominance of Ceratitis silvestrii Bezzi (Diptera: Tephritidae). 91.33% of the emergences from infested fruits and 43.41% of the individuals trapped belong to this species. C. silvestrii, which presents a homogeneity in its distribution between locations and ecosystems, is therefore the main pest species of shea fruits in production in this zone. The results suggest the need to determine the economic importance of Tephritidae infesting shea fruits.展开更多
文摘In Burkina Faso, the availability of <i><span style="font-family:Verdana;">Acacia</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">macrostachya</span></i><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">“</span><span style="font-family:Verdana;">Zamnè</span><span style="font-family:Verdana;">”</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">seeds throughout the year is threatened by the attacks of pests. So, the effectiveness of airtight (hermetic) storage for the preservation of these seeds was evaluated using 20</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">litre plastic jars and 50 kg PICS bags as hermetic containers with 50 kg polypropylene bags as controls. Seeds of </span><i><span style="font-family:Verdana;">Acacia</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">macrostachya</span></i><span style="font-family:Verdana;"> (17.5 kg) were stored in each of these storage devices for six</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">months under ambient conditions in the laboratory. The number of storage pest </span><i><span style="font-family:Verdana;">Bruchidius</span></i><span style="font-family:Verdana;"> </span><i><span style="font-family:Verdana;">silaceus</span></i><span style="font-family:Verdana;"> increased significantly in polypropylene bags from 235 to 715 individuals on average/500</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">g of seeds. But in PICS bags and plastic drums, the number of this pest did not vary significantly (191 and 239 individuals on average/500</span><span style="font-family:Verdana;"> </span><span style="font-family:Verdana;">g of seeds for plastic jars and PICS bags respectively). In both hermetic devices, we found few individuals of another major storage pest </span><i><span style="font-family:Verdana;">Caryedon<
文摘The lack of food security leads us to turn to the riches of the forest, namely non-timber forest products (NTFP) and timber forest products (TFP). In Burkina, these products are a source of income for families, improving their living conditions. Tamarindus indica L. that is a NFTP, is widely used in both rural and urban areas. Unfortunately, tamarind is subject to attack by Caryedon serratus. Its biological activity begins on the fruit before the harvest. The aim of our study is to evaluate some biodemographic parameters of the insect pest C. serratus Olivier. First100 healthy T. indica pods were placed in contact with ten pairs of C. serratus for 24 hours. 25 pods, each carrying a maximum of two eggs, were divided into five batches of 5 pods. Then a pair of C. serratus aged less than 24 h was placed in contact with 4 healthy pods for 24 h. Every day, the pair was removed and transferred to another box containing 4 new healthy pods. A total of 20 replicates were performed. The results showed that C. serratus has an average lifespan of 14 days. However, the female (16 days) lived longer and laid an average of 34 eggs during her lifetime. The egg-laying period lasted 14 days, the number of eggs increased until reaching a maximum peak on the 4<sup>th</sup> day. C. serratus has an embryonic development time of 3 days and an emergence rate of 66.63%. However, the weight of males and females differed significantly (p = 0.0108). We found an intrinsic rate of natural increase of 0.12 and a population doubling time was 5.68 days. These results have enabled us to gain a better understanding of its development cycle and its capacity for regeneration. This allows us to implement control strategies for better stock protection.
文摘A few studies have highlighted the degradation of shea tree fruits mainly due to insects in Burkina Faso. The insects associated with these non-timber forest products are still poorly known, hence the interest of this study. The objective of the study is to make a qualitative inventory of the biodiversity of insect pests of shea fruits during the ripening period in two different ecosystems. It was carried out in 2021 in three locations of the Ziro province. 30 shea fruit trees distributed in 9 sites listed in agrosystems and protected areas were selected for monitoring and collecting insects infested with the fruits. The inventory identified 25 species in 13 families clustered in 5 orders. The order of Diptera, composed of 6 families with 15 species recorded, is the most dominant order in this diversity. Among the different families, 3 of them, Calliphoridae, Tephritidae and Muscidae, present at least 3 species each. 7 species are mainly associated with fruit damage with a predominance of Ceratitis silvestrii Bezzi (Diptera: Tephritidae). 91.33% of the emergences from infested fruits and 43.41% of the individuals trapped belong to this species. C. silvestrii, which presents a homogeneity in its distribution between locations and ecosystems, is therefore the main pest species of shea fruits in production in this zone. The results suggest the need to determine the economic importance of Tephritidae infesting shea fruits.
