![]() ![]() There are horn-shaped protuberances on the anterior surface. Pupa is yellowish-brown with about 50 mm in length. Thoracic spiracles are larger than abdominal spiracles. ![]() Respiratory plate consists with small, round to oval holes. Thoracic spiracles are about 1.85 to 2.23 mm long. ![]() Cranium is dark brown, with many round pits. Grubs are yellowish-white where the third instar grow to 60 to 100 mm in length. Grub stage undergo three instars before becoming a pupa. After one week, they swell and later hatch within 11 to 13 days. Eggs are typically laid inside rotting vegetative matter. Eggs Īdult female lay yellowish-white oval eggs which are about 3 mm in diameter. There are two tubercles on the thoracic ridge. Male is characterized by a rounded, shiny terminal abdominal segment whereas female has a relatively hairier 'tail'. Adults are dark brown to black in color with shiny dorsum. This large species has an average length of about 33 to 40 mm. The beetle kills the palms (particularly newly planted ones) when the growing point is destroyed during feeding. Damaged fronds show typical triangular cuts. rhinoceros attacks the developing fronds of raffia, coconut, oil, and other palms in tropical Asia and a number of Pacific islands. Our R&D team will continue to research on this fungus as a biological pesticide on other destructive insects and other crops.The Asiatic rhinoceros beetle, coconut rhinoceros beetle or coconut palm rhinoceros beetle, ( Oryctes rhinoceros) is a species of rhinoceros beetle of the family Scarabaeidae. These promising results show that Metarhizium anisopleae can be used to control other insect pests. This treatment is least effective on grasshoppers with a result of 12% insect mortality rate. The highest success rate against the army worms is at 66,7% at the concentration of 2% Metarhizium anisopleae fungus. ![]() On scale insects, application of Metarhizium anisopleae fungus at 1,5% is almost 100% effective. Our findings show very promising results. Indmira R&D division has carried studies on the effect of Metarhizium anisopleae as a biological pesticide in controlling the populations of important insect pests, such as scale insects ( Phenacoccus manihoti), army worms ( Spodoptera spp.), rice ear bug ( Leptocorisa oratoria), and grasshoppers (Caelifera). Metarhizium anisopliae can then be purified and applied to crops to prevent and/or eradicate Oryctes rhinoceros. This can be achieved by initially growing Metarhizium anisopliae on a potato dextrose agar (PDA) then increasing the production in the potato dextrose extract solution. To utilize this fungus, we must first be able to produce a large amount of pure isolates. Recent findings show that Metarhizium anisopliae application can effectively fill the role of curbing coconut beetle infestation.įound in the soil, Metarhizium anisopliae causes diseases in insects by acting as a parasite. However, these treatments have not shown significant impacts in controlling Oryctes rhinoceros damages in the fields. Such beetle infestation has been controlled by cultivation methods, chemicals, as well as biological agents. These damages lead to reduced production and even death of the plants. Plant damage is caused by adult insects that consume the growing parts. At larval stage, this insect consumes dead wood materials. This insect goes through a complete metamorphosis, which involves stages of eggs, larvae, pupae, and adults. Despite the name, this insect causes damages in other important economic plants such as cassava, sugarcane, oil palm, and other palm species. Oryctes rhinoceros, also known as Asian coconut beetle, is an important pest in this part of the world. ![]()
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