Functional response and searching efficiency in Pseudogonatopus flavifemur Esaki and Hash.(Hymenoptera: Dryinidae), a parasite of rice planthoppers

Tock, Hing Chua and VA Dyck and NB Pena (1984) Functional response and searching efficiency in Pseudogonatopus flavifemur Esaki and Hash.(Hymenoptera: Dryinidae), a parasite of rice planthoppers. Researches on population ecology, 26. pp. 74-83. ISSN 0034-5466

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URL: https://esj-journals.onlinelibrary.wiley.com/doi/1...

Abstract

The functional response of Pseudogonatopus flavifemur E & H (Hym., Dryinidae) was investigated by offering hosts (brown planthopper) at densities ranging from 8 to 160 per cage. The response curve was found to be sigmoid, i. e. Holling's (1959) Type III curve. In experiments involving 310 hosts per cage distributed unevenly in 5 densities (10, 20, 40, 80 and 160 per hill), and a different female parasite density each time (viz. 1, 2, 4, 8 or 16 per cage), the behavioral response was described well by the “random predator equation” of Royama (1971) and Roger (1972), which is a convex exponential curve. The area of discovery (a) decreased with an increase in female parasite density (P), and the relationship was described by the equation: log a=−1.0099−0.3638 log P. There was an apparent increase in handling time per host as the number of female parasites increased. Super parasitism, a rare phenomenon under natural conditions, was often observed in the laboratory. The potential of P. flavifemur as a biocontrol agent of the brown planthopper is discussed.

Item Type:	Article
Keyword:	Pseudogonatopus flavifemur , Brown planthopper , Parasite
Subjects:	Q Science > QL Zoology > QL1-991 Zoology > QL360-599.82 Invertebrates
Department:	FACULTY > Faculty of Medicine and Health Sciences
Depositing User:	DG MASNIAH AHMAD -
Date Deposited:	22 Sep 2022 15:02
Last Modified:	22 Sep 2022 15:02
URI:	https://eprints.ums.edu.my/id/eprint/34077

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