A Survey of Wood Borer Apate terebrans Tunnels on Terminalia mantaly in Nigeria with Special Reference to the Niger Delta Region

Gabriel A Adedeji (), Adedapo A Aiyeloja (), Usman Zakka () and Comfort O Ayemere ()

Journal of Forests, 2021, vol. 8, issue 2, 141-152

Abstract: This study was conducted to count Apate terebrans opened tunnels in Terminalia mantaly at the 3 Parks of the University of Port Harcourt. All trees were assessed visually for the presence and absence of tunnels, frass, and exudates during the 6-months (January-July) field survey in 2018. The mean numbers of tunnels/tree were 16.12±2.13 from 58 trees representing 19.9% of 291 total trees. The spread of attack was fairly scattered and more closely associated with diameter at breast height (DBH) of tree (χ2= 12.763, df = 4, α0.012*). While a majority (67.0%) of the trees experienced breaking reflecting both the immediate and residual impact of opened and closed tunnels, respectively, 10.7% experienced tearing of branches, and 5.5% experienced both breaking and tearing. Strong wind was found as a contributory factor to breaking and tearing. The findings suggest T. mantaly as a poor adaptable environmental species in Nigeria ecosystems and its current utilisation as ornamental tree may be revisited.

Keywords: Urban tree; DBH; Apate terebrans; Severity of attack; Frass; Exudates (search for similar items in EconPapers)
Date: 2021
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