![]() ![]() ![]() Eggs, early life stages, and fecal excrement of coconut rhinoceros beetle and oriental flower beetle are morphologically indistinguishable, thereby creating uncertainty when such specimens are discovered in the field. Confounding this program is the widespread presence of another scarab beetle on Oahu, the oriental flower beetle, Protaetia orientalis (Gory and Percheron 1833). An incipient coconut rhinoceros beetle population was recently discovered on the island of Oahu, Hawaii and is currently the target of a large, mutiagency eradication program. The coconut rhinoceros beetle, Oryctes rhinoceros (L.), is a major pest of coconut and other palm trees. ![]() The advantage of research is it can be used in integrated pest management (IPM) packages for monitoring of beetle population, and removal of beetles.Ī Multiplex PCR Assay for Differentiating Coconut Rhinoceros Beetle (Coleoptera: Scarabaeidae) From Oriental Flower Beetle (Coleoptera: Scarabaeidae) in Early Life Stages and Excrement. Aggregation pheromone is useful for attracting females. This result indicates the high population of O. rhinoceros and 9.9% other insect species (Rhynchophorus ferrugineus and Xylotrupes gideon). ![]() In 12 weeks of monitoring, the traps captured 101 insects consist of 90.1% O. The traps were observed, and the beetles trapped were counted every week. The pheromone compounds were placed in traps (buckets), hung 2 meters above the ground. Aggregation pheromones is a chemical compound containing Ethyl 4-methyl octanoate. rhinoceros that were attracted to aggregation pheromones in the field. The study aimed to monitor the population and analyze the sex ratio of O. rhinoceros attacked one of the coconuts producing villages with more than 75% of the coconut plant population O. Oryctes rhinoceros (Coleoptera: Scarabaeidae) is the most serious pest of coconut plantations in Indonesia. Results suggest that addition of UV LED light sources to pheromone traps could improve detection trapping of CRB and that reduction of pheromone release rate could extend service life of lures without changing capture rate.Aggregation pheromones for monitoring the coconut rhinoceros beetle (Oryctes rhinoceros) in Jerukwangi Village, Jepara, Indonesia Further, when linear regression analyses of CRB trap capture rate as a function of pheromone release rate were conducted for traps with and without UV LEDs separately, only a very weak relationship between trap capture and oryctalure release rate was observed and only when a UV LED was present. Reduction in oryctalure release rate by up to an order of magnitude did not significantly change CRB capture rate. Addition of UV LED light sources to pheromone traps significantly increased trap catch by 2.85 times. Two modifications were tested, 1) addition of ultraviolet light emitting diodes (UV LEDs), and 2) reduction of pheromone release rate. A field trial was performed at six locations on Guam to test potential improvements to standard CRB pheromone trapping with oryctalure (ethyl 4-methyloctanoate). CRB populations are typically controlled with a combination of biocontrol, pheromone traps, and breeding site removal. CRB-G is apparently resistant to Oryctes rhinoceros nudivirus, the preferred biocontrol agent for this pest. The CRB population on Guam is genetically different from other populations in Asia and the Pacific, and is considered a new invasive biotype (termed CRB-G). CRB was found on Guam in 2007 and, despite suppression efforts, has subsequently spread across the island. Coconut rhinoceros beetle (CRB), Oryctes rhinoceros L., is a serious pest of coconut and oil palms throughout Southeast Asia and the Pacific. ![]()
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