Valentine, Tutus Puspa (2026) RESPON FUNGSIONAL PREDATOR Lycosa pseudoannulata (Lycosidae: Araneae) TERHADAP Nilaparvata lugens (Delphacidae: Hemiptera). Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The brown planthopper (Nilaparvata lugens) is one of the major rice pests causing significant yield losses in rice production. The use of natural enemies, such as the wolf spider (Lycosa pseudoannulata), has been considered an environmentally friendly approach for sustainable pest management. This study aimed to evaluate the predation capacity and determine the functional response type of L. pseudoannulata toward N. lugens under different prey densities. The experiment was arranged in a Completely Randomized Design (CRD) with five prey density treatments (2, 5, 10, 15, and 20 fourth-instar N. lugens nymphs) and five replications. Observations were conducted at 2, 4, 6, 24, and 48 h after predator introduction. The observed parameters included the number of prey consumed, predation dynamics, predatory behavior, and functional response. Data were analyzed using analysis of variance (ANOVA) and nonlinear regression based on Holling's Type II model. The predation capacity of L. pseudoannulata increased with prey density and reached its highest level at 4 h, with an average consumption of 1.92 prey individuals, before gradually declining due to predator satiation. The predator exhibited active hunting behavior during the early observation period, followed by reduced activity over time. Functional response analysis indicated a Holling Type II functional response with an attack rate (a) of 0.070, a coefficient of determination (R²) of 0.778, and a correlation coefficient (r) of 0.963. The findings demonstrate that L. pseudoannulata effectively suppresses N. lugens populations at low to moderate prey densities and has considerable potential as a biological control agent for sustainable brown planthopper management in rice agroecosystems.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) S Agriculture > SF Animal culture |
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| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Tutus Puspa Valentine | ||||||||||||
| Date Deposited: | 15 Jul 2026 08:34 | ||||||||||||
| Last Modified: | 15 Jul 2026 08:34 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/55618 |
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RESPON FUNGSIONAL PREDATOR Lycosa pseudoannulata (Lycosidae:
Araneae) TERHADAP Nilaparvata lugens (Delphacidae: Hemiptera). (deposited UNSPECIFIED)
- RESPON FUNGSIONAL PREDATOR Lycosa pseudoannulata (Lycosidae: Araneae) TERHADAP Nilaparvata lugens (Delphacidae: Hemiptera). (deposited 15 Jul 2026 08:34) [Currently Displayed]
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