TY - JOUR AU - da Silva Lopes, Rosineide AU - Barroso Martins, Mônica Cristina AU - De Lima, Geiziquele AU - Gonçalves de Oliveira, Luciana AU - Félix da Costa, Antonio AU - Dos Santos, Venézio Felipe AU - Dos Santos Correia, Maria Tereza AU - Da Silva, Nicácio Henrique AU - Correia de Albuquerque, Auristela AU - Áurea de Luna Alves Lima, Elza AU - De Menezes Lima, Vera Lúcia PY - 2022/11/01 Y2 - 2024/03/29 TI - Toxicity of Agave sisalana extracts on Cordyceps and their effect and the association with fungi on Nasutitermes corniger (Isoptera: Termitidae) JF - Revista Colombiana de Entomología JA - Rev. Colomb. Entomol. VL - 48 IS - 2 SE - Control / Research paper DO - 10.25100/socolen.v48i2.11537 UR - https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/11537 SP - AB - <p><em><span style="font-weight: 400;">Nasutitermes corniger</span></em><span style="font-weight: 400;"> is an arboreal termite that causes economic damage in urban areas, and its control is for chemical insecticides. An alternative for insect control is the use of entomopathogenic fungi and plant extracts, or the synergistic effect of the association of these. The toxicity of aqueous and hydroethanolic extracts of </span><em><span style="font-weight: 400;">Agave sisalana</span></em><span style="font-weight: 400;"> on the biological aspects of the fungal</span><em><span style="font-weight: 400;"> Cordyceps  farinosa</span></em><span style="font-weight: 400;">, </span><em><span style="font-weight: 400;">C. fumosorosea</span></em><span style="font-weight: 400;"> and </span><em><span style="font-weight: 400;">C. javanica</span></em><span style="font-weight: 400;"> and the action of the extracts and their synergistic effect on </span><em><span style="font-weight: 400;">N. corniger </span></em><span style="font-weight: 400;">was examined. The effect of the extracts on fungi was evaluated by germination, sporulation and mycelial growth of fungi in Sabouraud medium through the study of biological aspects under laboratory conditions; and control of </span><em><span style="font-weight: 400;">N. corniger</span></em><span style="font-weight: 400;"> were examined, by ingestion of extracts and of the association extract plus fungus on filter paper, being the percentage of mortality of soldiers and workers of the termite daily. In general, the extracts were inoffensive to the fungi at concentrations 10, 25, 50, 100 and 200 mg.mL</span><span style="font-weight: 400;">-1</span><span style="font-weight: 400;">. The extracts demonstrated termiticidal actions at concentrations tested, causing the mortalities about 100% of the workers after the third and sixth days (LC</span><span style="font-weight: 400;">50</span><span style="font-weight: 400;">: 0.778 to 0.803 mg.mL</span><span style="font-weight: 400;">-1</span><span style="font-weight: 400;">) and 100% of the soldiers between the fourth and seventh days (LC</span><span style="font-weight: 400;">50</span><span style="font-weight: 400;">:0.146 to 0.956 mg.mL</span><span style="font-weight: 400;">-1</span><span style="font-weight: 400;">). The association of the extracts with </span><em><span style="font-weight: 400;">C. farinosa</span></em><span style="font-weight: 400;"> ESALQ1355 was more efficient in inducing the mortality in </span><em><span style="font-weight: 400;">N. corniger. </span></em><span style="font-weight: 400;">These results demonstrated the efficiency </span><em><span style="font-weight: 400;">in vitro</span></em><span style="font-weight: 400;"> of the sisal extracts in controlling </span><em><span style="font-weight: 400;">N. corniger</span></em><span style="font-weight: 400;"> termites, alone or in combination with fungi, suggesting their potential joint usefulness in the biological control of insect pests.</span></p> ER -