The diet of yellow-vented bulbul (Pycnonotus goiavier) in oil palm agroecosystems

Mohd Haniff Harun, . and Andrew Alek Tuen, . and Norman Kamarudin, . and Bettycopa Amit, . and Khalid Haron, . The diet of yellow-vented bulbul (Pycnonotus goiavier) in oil palm agroecosystems. pp. 417-424. ISSN 1511-2780

The Yellow-vented Bulbul (Pycnonotus goiavier) is one of the most sighted birds in oil palm plantation. A study on their dietary habits was conducted at the Durafarm Oil Palm Plantation from February 2011 to May 2013 to determine the reason behind their abundance. In this study 45 individuals of P. goiavier were dissected for stomach content analysis. Ivlevs electivity index (E) was used to measure the degree of food selection by P. goiavier. The results showed that this bird species mainly selected the Order Coleoptera (mostly pollinating weevil) (E 0.97) and Homoptera (E 0.87) as their main food sources in the oil palm plantation. This bird also selected Order Diptera (E -0.30) Hemiptera (E -0.43) and Hymenoptera (E -0.92) as a prey based on their abundance. However this species mainly avoided feeding on insects from Order Odonata Orthoptera Dictyoptera and Lepidoptera (E-1.0 each) in oil palm plantation. There is a weak negative correlation found for the distribution of P. goiavier with the abundance of insects in oil palm plantation. Further investigation is needed on this bird species towards predating the oil palm pollinating weevil since it could possibly affect the population density of the pollinating weevil and subsequently the oil palm fruit set.

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Abstract

The Yellow-vented Bulbul (Pycnonotus goiavier) is one of the most sighted birds in oil palm plantation. A study on their dietary habits was conducted at the Durafarm Oil Palm Plantation from February 2011 to May 2013 to determine the reason behind their abundance. In this study 45 individuals of P. goiavier were dissected for stomach content analysis. Ivlevs electivity index (E) was used to measure the degree of food selection by P. goiavier. The results showed that this bird species mainly selected the Order Coleoptera (mostly pollinating weevil) (E 0.97) and Homoptera (E 0.87) as their main food sources in the oil palm plantation. This bird also selected Order Diptera (E -0.30) Hemiptera (E -0.43) and Hymenoptera (E -0.92) as a prey based on their abundance. However this species mainly avoided feeding on insects from Order Odonata Orthoptera Dictyoptera and Lepidoptera (E-1.0 each) in oil palm plantation. There is a weak negative correlation found for the distribution of P. goiavier with the abundance of insects in oil palm plantation. Further investigation is needed on this bird species towards predating the oil palm pollinating weevil since it could possibly affect the population density of the pollinating weevil and subsequently the oil palm fruit set.

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Item Type:	Article
AGROVOC Term:	Passeriformes
AGROVOC Term:	Birds
AGROVOC Term:	Oil palms
AGROVOC Term:	Identification
AGROVOC Term:	Arthropods
AGROVOC Term:	Fruit set
AGROVOC Term:	Fruits
AGROVOC Term:	Food resources
AGROVOC Term:	laboratory techniques
AGROVOC Term:	Statistical analysis
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/24323

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