Host plant-mediated trophic dynamics influence life table parameters and predation of Geocoris ochropterus Fieber in a tritrophic system

IF 2.5 2区农林科学 Q1 AGRONOMY

Crop Protection Pub Date : 2025-03-04 DOI:10.1016/j.cropro.2025.107186

B.V. Jayanth, Shashikala M, Gundreddy Rajareddy, Edula Udaykumar, Gouranga Saw, Bishwajeet Paul

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引用次数: 0

Abstract

Our study explores the impact of two host plants of Aphis gossypii Glover, namely cotton (Gossypium hirsutum L.) and roselle (Hibiscus sabdariffa L.), on the life history parameters and feeding efficiency of generalist predator, Geocoris ochropterus Fieber, under laboratory conditions as host plants significantly affect predator-prey dynamics. Findings revealed that G. ochropterus fed on aphid-cotton complex led to shorter developmental periods and higher survival rates than aphid-roselle complex. Female G. ochropterus fed on aphids from cotton exhibited greater longevity and fecundity. Survival analyses indicated a higher probability of adulthood on the aphid-cotton complex, with females contributing more to population growth across both host plants (cotton and roselle). Significant differences were found in the intrinsic rate of increase (r = 0.0546 and 0.0465 day⁻¹), finite rate of increase (λ = 1.0561 and 1.0476 day⁻¹) and mean generation time (T = 59.1661 and 61.7271 day) but the net reproduction rate (R₀ = 25.25 and 17.67 offspring/individual) was found non-significant when reared on aphid-cotton and aphid-roselle complexes, respectively. Aphid-cotton reared G. ochropterus led to higher predation rates than those reared on aphid-roselle. The study underscores the significance of host plant preference in the success of biological control programs, as plant-related nutritional differences influence predator fitness and pest regulation efficacy. This insights into host plant effects on predator-prey dynamics offers valuable implications for IPM strategies targeting A. gossypii and other herbivores, advancing sustainable agricultural practices.

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来源期刊

Crop Protection 农林科学-农艺学

CiteScore

6.10

自引率

3.60%

发文量

200

审稿时长

29 days

期刊介绍： The Editors of Crop Protection especially welcome papers describing an interdisciplinary approach showing how different control strategies can be integrated into practical pest management programs, covering high and low input agricultural systems worldwide. Crop Protection particularly emphasizes the practical aspects of control in the field and for protected crops, and includes work which may lead in the near future to more effective control. The journal does not duplicate the many existing excellent biological science journals, which deal mainly with the more fundamental aspects of plant pathology, applied zoology and weed science. Crop Protection covers all practical aspects of pest, disease and weed control, including the following topics: -Abiotic damage- Agronomic control methods- Assessment of pest and disease damage- Molecular methods for the detection and assessment of pests and diseases- Biological control- Biorational pesticides- Control of animal pests of world crops- Control of diseases of crop plants caused by microorganisms- Control of weeds and integrated management- Economic considerations- Effects of plant growth regulators- Environmental benefits of reduced pesticide use- Environmental effects of pesticides- Epidemiology of pests and diseases in relation to control- GM Crops, and genetic engineering applications- Importance and control of postharvest crop losses- Integrated control- Interrelationships and compatibility among different control strategies- Invasive species as they relate to implications for crop protection- Pesticide application methods- Pest management- Phytobiomes for pest and disease control- Resistance management- Sampling and monitoring schemes for diseases, nematodes, pests and weeds.