Open AccessPopulation Abundance of Red Palm Weevil, Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) in Rhu Tapai Coconut Plantation
Author(s) -
Nurul Syafiqah Senafi,
Mohamed Nor Zalipah
Publication year - 2020
Publication title -
universiti malaysia terengganu journal of undergraduate research
Language(s) - English
Resource type - Journals
ISSN - 2637-1138
DOI - 10.46754/umtjur.v2i1.107
Subject(s) - rhynchophorus , weevil , palm , infestation , pest analysis , population , biology , pheromone trap , toxicology , horticulture , sex pheromone , integrated pest management , agronomy , botany , demography , quantum mechanics , sociology , physics
Red Palm Weevil (RPW), Rhynchophorus ferrugineus is a lethal pest which has been described as a serious pest that reduces the production of coconut tree and other major cultivated palms. RPW infestation was initially detected by Department of Agriculture (DOA) in 2007 in all eight Terengganu districts. Rhu Tapai plantation area is one of the highly infested areas in Terengganu. Until now, limited reports on population abundance of this lethal pest have been discussed particularly in Rhu Tapai. Therefore, a study on population abundance is a must in order to understand the population dynamic of RPW which will be the first step of its control strategy. A total of 12 traps were installed and synthetic pheromones (P028 Ferrolure+) were used in attracting the RPW adults. Overall, 81 individuals of RPW were successfully collected after 16 weeks of pheromone trapping (3rd September until 28th November 2018). The trend of weekly RPW captured was eventually decreasing from Week 1 to Week 16 but showed a sudden increment in Week 10. Pandan cultivar plot captured the highest number of adult RPW compared with Mawa cultivar plots. Result showed no significant difference between RPW sexes percentage of sexes which was 53% of male and 47% of female (1:1 ratio) (U= 0.143, p > 0.05). Daily rainfall and temperature significantly reduced the trapping efficiency (R²rainfall = 0.142, p = 0.145; R²temperature = 0.0858; p = 0.258). These results will be the baseline information for future study regarding control management strategy using pheromone-based mass trapping system.