Pest s 13 00038

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Journal of Pest Science Development of the Red Palm Weevil (Rhynchophorus ferrugineus; Curculionidae; Coleoptera) on Infested Coconut Palms: A New Invasive Coconut Pest in Malaysia --Manuscript Draft-Manuscript Number: Full Title:

Development of the Red Palm Weevil (Rhynchophorus ferrugineus; Curculionidae; Coleoptera) on Infested Coconut Palms: A New Invasive Coconut Pest in Malaysia

Article Type:

Original Paper

Keywords:

Rhynchophorus ferrugineus; Red Palm Weevil; coconut pest; invasive species; growth stages

Corresponding Author:

Wahizatul Afzan Azmi, Ph.D Universiti Malaysia Terengganu Kuala Terengganu, Terengganu MALAYSIA

Corresponding Author Secondary Information: Corresponding Author's Institution:

Universiti Malaysia Terengganu

Corresponding Author's Secondary Institution: First Author:

Wahizatul Afzan Azmi, Ph.D

First Author Secondary Information: Order of Authors:

Wahizatul Afzan Azmi, Ph.D Nurul 'Izzah Abdul Ghani, Bsc

Order of Authors Secondary Information: Abstract:

The development of different growth stages of the Red Palm Weevil (RPW), Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae) were surveyed inside different parts (shoot, cabbage, petiole and trunk) of fifteen infested coconut palms, Cocos nucifera. A total number of 1,208 RPW which consists of 12 eggs (1.0%), 392 larvae (32.5%), 677 pupae (56.0%) and 127 adults (10.5%) were collected from this study. Higher numbers of RPW were found in petioles (770 individuals), followed by cabbages (194 individuals), trunks (142 individuals) and the least was shoots (102 individuals). Eggs of RPW were mostly found in cabbage part, whereas larvae were abundantly recorded inside cabbage (149 individuals) and petiole (161 individuals) of infested coconut palms. Significantly higher numbers of pupae (532 individuals) were found in petioles compared with other parts of coconut palms. This is due to the availability of fiber in petioles of coconut as fully developed larvae will compact most of the fiber to construct cocoon. Adults were mostly found in petiole (77 individuals) and trunk (30 individuals) of the infested coconut palms. The symptom and damage of each attacked part where different growth stages lived were also discussed in this paper. This invasive weevil will be a threat to the coconut industry and, indeed, the survival of oil palm plantation. As this invasive weevil was relatively unknown, outcomes from this study will provide important information which is crucially for developing new control measures of this severe pest.

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