Hispid beetles Brontispa longissima are palmivorous insects (Creighton , Lever , in He et al. /06). The larvae and adults are. The coconut hispid beetle Brontispa longissima (Gestro) was accidentally introduced into Western Samoa in Consequently in several beneficial . PDF | On May 1, , Mario Navasero and others published The Coconut Leaf Beetle, Brontispa longissima (Gestro) (Chrysomellidae.
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The important species were Formica ,ongissima. Ari Atoll Fenfushi Hulhule Is. Please follow this link for more information on the management and impacts of the coconut hispid beetle.
The battle against Brontispa continues
Journal of Invertebrate Pathology, 53 3: Integrated Pest Management Young palm trees are sprayed with a suspension of M. Chemical Control Chemicals used to control the pest must reach the insect in the narrow crevices between the leaflets and chemical treatment must be maintained throughout the year because B.
The survey team visited all islands including resorts and villages. Lnogissima beetles, which also seem to avoid light, are nocturnal bronfispa fly well Kalshoven, Both adult and larvae typically feed on brontisap epidermis and parenchyma of the leaves removing strips of tissues from the leaflets and destroying the growing points of the palms FenneHoward et al.
The narrow feeding scars enlarge to form irregular, brown blotches as the frond opens. Eulophidae as an imported biological control agent of Brontispa longissima Gestro Coleoptera: Discussion An acceptable insecticide effective kills target organisms, but results in low mortality of non—target organisms.
New Guinea Agricultural Gazette, 6: A key to the Vietnamese species of the genus Chelisoches was provided.
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At the laboratory provided by the management of Sun Island resort, mass rearing of the parasitoid began upon arrival of the parasitoids. Therefore, plant protection teams of two states and longissimq divisions have been assigned to conduct the specific survey for Brontispa with available support.
Rennell, a variety from the isolated Renell island in the Solomon Islands, is scarcely attacked, whereas varieties from Malaysia such as FMS Federated Malay States and longissmia red and yellow palms are highly susceptible. New Guinea Agricultural Gazette, 6: The pest has since known to spread to neighbouring inhabited island of Fenfushi and to Holiday Island resort Dhiffushi, as well Maamigili [inhabited] and Ariyadhoo [uninhabited] island within a couple of years.
The pest could not be detected after three applications of M. Fruit production is significantly reduced if eight or more leaves are destroyed. However, the extract of C. Detection and Inspection Top of page Young coconut palms should be inspected for eggs longisssima or inside the tightly folded leaflets and early feeding damage of the larvae between and inside unopened leaflets, where browning and death of the surrounding tissues can be seen.
The host range of B. The program seeks to determine the extent of infestation and level of damage of Brontispa in the country.
Hispine Pests of Palms
Many of these color forms have been described as separate species or subspecies but currently they are all treated as one species.
Central Plantation Crops Research Institute.
Light attacks result in minor leaf injury, and a slight decrease in fruiting at the axils of the damaged leaves. Chrysomelidaeis a major pest of coconut palm.
Furthermore, all extracts used showed antifeedant effects, which indicated the various uses of botanical extract in B. Brontispa gleadowi Weise is found in Mauritius. Current status of the coconut beetle outbreaks in the Asia-Pacific region. Such observation, considering the economics and environmental impact, paved the way for the use of biological control as an alternative approach that can effectively and sustainably manage Brontispa population.
The project team did not find any effective biocontrol agents of the pest from any surveyed island. Distributional correlation between Hispine beetles and their host plants.
Beetle larvae chew large areas of the leaflets killing the underlying tissues and reducing photosynthesis; photosynthesis may be reduced to zero in the case of heavy beetle attacks.
Chemical pesticides are presently the most widely used control method for B. In North Sulawesi, the main damage caused by Brontispa occurs on young, year-old palms, which are not yet fruiting. Infested palms are more susceptible to drought and diseases such as fungal rot PestNet The hatching rate of normal treatment control was Gesunde Pflanzen Germany, F.