Autor: |
Souza SAG; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Baraúna EEP; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Lemes PG; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Mota-Filho TMM; Universidade Estadual Paulista 'Júlio de Mesquita Filho' - UNESP, Faculdade de Ciências Agronômicas, Departamento de Proteção Vegetal, Botucatu, SP, Brasil., Brito TR; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Baldin T; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Carvalho LR; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Schettino S; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Colen F; Universidade Federal de Minas Gerais - UFMG, Instituto de Ciências Agrárias, Montes Claros, MG, Brasil., Arantes MDC; Universidade Federal de São João Del Rei - UFSJ, Campus Sete Lagoas, Sete Lagoas, MG, Brasil. |
Abstrakt: |
Termites of the genus Nasutitermes sp. (Blattodea: Termitidae), which feed on cellulose, may cause wood to become brittle and fragile. This study aimed to evaluate the natural resistance of three native wood species: Magonia pubescens (Sapindaceae), Dalbergia nigra and Machaerium amplum (Fabaceae) to attack by Nasutitermes sp. termites and to investigate the relationship between resistance, extractive content, and oven-dry density. Samples of each wood species were subjected to a forced feeding process with Nasutitermes sp. termites for 30 days. Following the exposure, the oven-dry density, extractive content, percentage of wood loss, and termite mortality were determined for each sample. Dalbergia nigra exhibited resistance to termite attack and had the highest extractive content at 13.14%. Conversely, M. amplum had the highest wood loss at 5.37% and the lowest extractive content at 1.94%. Both species showed a negative correlation between wood loss and extractive content, but no correlation with wood density. Magonia pubescens had the highest density at 0.90 g/cm3. Macherium amplum and M. pubescens caused 100% termite mortality, while D. nigra caused 40% mortality. |