Comparative Study of Resistance and Feeding Preference of 24 Wood Species to Attack by Heterotermes indicola (Wasmann) and Coptotermes heimi (Isoptera: Rhinotermitidae, Termitidae) in Pakistan.

Abstract

Present study was conducted to evaluate the laboratory and field preference of 24 Pakistani wood species: Azadirachta indica (Neem), Pinus  roxberghii (Chir), Dalbergia sissoo (Sheesham), Populus deltoides (Popular), Albizzia lebbeck (Shirin), Abies pindrow(fir), Alstonia scholaris (Alstonia), Erythrina suberosa (Gul-e-nister), Eucalyptus citriodora (safaeda), Ficus religiosa (Bohar), Heterophragma adenophyllum (Beeri Patta), Melia azedarach (Derek), Pinus wallichiana (Chir), Terminalia arjuna (Arjun), Acacia Arabica (Kikar), Betula utilis (Birch) Cedrus deodara (Deodar), Cordia oblique (Lasura), Mangifera indi,a (Aam),Ehretia serrata Moringa oleifera (sohanjana), Putranjiva roxburghii (Lucky bean), Syzygium cumini (Jaman) and  Zizyphus jujube (Berry) against attack and damage by termite species Heterotermes indicola  and Coptotermes heimi. Two weeks laboratory and four weeks field feeding trials were performed as described in standards of the American Wood Protection Association (AWPA, 1997). Samples of each of the 24 wood species were individually exposed to 100 termites (10% soldiers); and termite mortality, wood mass loss and visual appearance of the samples (on a scale of 0-10) were recorded. Results indicated that by no choice feeding assay, Populus deltoides was the most preferred and Dalbergia sissoo was the least preferred among the 24 wood species tested in laboratory against Heterotermes indicola and Coptotermes heimi. Field studies by no choice feeding test against mixed termites and C. heimi indicated D. sissoo the least palatable and Mangifera indica the most palatable wood. So it is recommended that though all 24 species evaluated in the present study differ in their susceptibility to termite attack, they would require additional protection to avoid termite attack.