Biological aspects and food consumption of oil palm fruit scraper Demotispa neivai (Coleoptera: Chrysomelidae)

Martínez Luis Carlos, . and Plata-Rueda Angelica, . Biological aspects and food consumption of oil palm fruit scraper Demotispa neivai (Coleoptera: Chrysomelidae). pp. 47-53. ISSN 1511-2780

In Colombia the beetle Demotispa neivai (Bondar) damages oil palm fruits resulting in loss of yield and oil production. As little is known of important aspects of its biology life cycle biometrics and food consumption important aspects of the biology of the species was studied. Experiments were conducted under laboratory conditions in the municipalit of Barrancabermeja Santander Colombia. Life cycle and description of developmental stages of D. neivai were determined taking into account stage-specific survival. The duration of the life cycle of D. neivai was determined to be 269.91 5.51 days with an overall survival rate of 96.7. Biometrical measurements were taken of the insects width length and weight. Adults are red beetles males and females being differentiated by size. The width length and weight of insects were proportional to their growth stage. D. neivai has a consumption rate that increased with the growth of the insect but was reduced at the adult stage (Y 0.001x6.2285 R2 0.901). This insects life cycle and adult longevity and size are factors that could be considered in determining its feeding habits and pest status in oil palm.

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Abstract

In Colombia the beetle Demotispa neivai (Bondar) damages oil palm fruits resulting in loss of yield and oil production. As little is known of important aspects of its biology life cycle biometrics and food consumption important aspects of the biology of the species was studied. Experiments were conducted under laboratory conditions in the municipalit of Barrancabermeja Santander Colombia. Life cycle and description of developmental stages of D. neivai were determined taking into account stage-specific survival. The duration of the life cycle of D. neivai was determined to be 269.91 5.51 days with an overall survival rate of 96.7. Biometrical measurements were taken of the insects width length and weight. Adults are red beetles males and females being differentiated by size. The width length and weight of insects were proportional to their growth stage. D. neivai has a consumption rate that increased with the growth of the insect but was reduced at the adult stage (Y 0.001x6.2285 R2 0.901). This insects life cycle and adult longevity and size are factors that could be considered in determining its feeding habits and pest status in oil palm.

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Item Type:	Article
AGROVOC Term:	Chrysomelidae
AGROVOC Term:	Oil palm
AGROVOC Term:	Food consumption
AGROVOC Term:	Beetles
AGROVOC Term:	Fruit crops
AGROVOC Term:	Losses
AGROVOC Term:	Crop yield
AGROVOC Term:	Oil products
AGROVOC Term:	Survival
AGROVOC Term:	Life cycle
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24630

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