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M. Osman
M. Osman
Mansoura University Faculty of Agriculture, Zoology Department Mansoura 35516 Egypt
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M. Bayoumy
M. Bayoumy
Mansoura University Faculty of Agriculture, Entomology Department Mansoura 35516 Egypt
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The effect of prey stages of the two-spotted spider mite Tetranychus urticae on the functional response of the coccinellid predator Stethorus gilvifrons was studied at 25±1 °C, 65±10% rh, and 16:8 h (L:D photoperiod). The functional response of S. gilvifrons female, to increasing prey stage density from 10–100 preys per patch, was of the curvilinear shape depicting Roger’s type II response with the highest consumption rate of larval prey stage. Results of the maximum likelihood analyses confirmed this type. By plotting a type II functional response model and polynomial logistic regression model to the numbers and proportions of consumed stages of T. urticae, respectively, the resulting regression lines fitted the data well. However, a composite waving form that appeared to be a decelerating (type II) response at low to medium prey densities and an accelerating (type III) response at high prey densities. We assume that the small size of experimental arena or predator feeding behaviour at low and high prey densities may have induced the modified type II response. A sensitivity analysis of the functional response model shows the crucial effect of prey stages on predation rates by S. gilvifrons. Theoretically, based on the lowest handling time for S. gilvifrons on larval stage of T. urticae, the maximum numbers of mites that could consume by a single female of S. gilvifrons within 24 h period were 77.42 larvae. These results improve our understanding of the interaction among S. gilvifrons and T. urtica stages and provide insights into the control of T. urticae.
Editor-in-Chief
- Jenő KONTSCHÁN Centre for Agricultural Research, Hungary
Technical Editor
- Ágnes TURÓCI Centre for Agricultural Research, Hungary
Section Editor
- K SALÁNKI Centre for Agricultural Research, Hungary
Editorial Board
- Z BOZSÓ Centre for Agricultural Research, Hungary
- PE CHETVERIKOV Saint-Petersburg State University, Russia
- JX CUI Henan Institute of Science and Technology, China
- J FODOR Centre for Agricultural Research, Hungary
- Z IMREI Centre for Agricultural Research, Hungary
- BM KAYDAN Çukurova University, Turkey
- L KISS University of Southern Queensland, Australia
- V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary
- MW NEGM Ibaraki University, Japan
- L PALKOVICS Széchenyi István University, Hungary
- M POGÁNY Centre for Agricultural Research, Hungary
- D RÉDEI National Chung Hsing University, Taiwan
- A TOLSTIKOV University of Tyumen, Russia
- J VUTS Rothamsted Research, UK
- GQ WANG Guangxi University, China
Acta Phytopathologica et Entomologica Hungarica
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| 2024 | |
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| Scopus | |
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| SJR index | 0.188 |
| SJR Q rank | Q4 |
| 2023 | |
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| Scopus | |
| CiteScore | 1.1 |
| CiteScore rank | Q4 (Insect Science) |
| SNIP | 0.279 |
| Scimago | |
| SJR index | 0.22 |
| SJR Q rank | Q4 |
| Acta Phytopathologica et Entomologica Hungarica | |
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| Acta Phytopathologica et Entomologica Hungarica | |
|---|---|
| Language | English |
| Size | B5 |
| Year of Foundation |
1966 |
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1 |
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| Founder | Magyar Tudományos Akadémia  |
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H-1051 Budapest, Hungary, Széchenyi István tér 9. |
| Publisher | Akadémiai Kiadó |
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H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
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| ISSN | 0238-1249 (Print) |
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