Osman, M., Abou-Elella, G., Tawfik, A. (2021). Role of four Phytoseiid mite species and Acarophagous Ladybird, Stetlrorus gilvifrons (Mulsant) as Bioagents of the Two Spotted Spider Mite Tetranychus urticae Koch. test, 4(1), 47-55. doi: 10.21608/ajesa.2021.163530
M. A. Osman; G. M. Abou-Elella; A. A. Tawfik. "Role of four Phytoseiid mite species and Acarophagous Ladybird, Stetlrorus gilvifrons (Mulsant) as Bioagents of the Two Spotted Spider Mite Tetranychus urticae Koch". test, 4, 1, 2021, 47-55. doi: 10.21608/ajesa.2021.163530
Osman, M., Abou-Elella, G., Tawfik, A. (2021). 'Role of four Phytoseiid mite species and Acarophagous Ladybird, Stetlrorus gilvifrons (Mulsant) as Bioagents of the Two Spotted Spider Mite Tetranychus urticae Koch', test, 4(1), pp. 47-55. doi: 10.21608/ajesa.2021.163530
Osman, M., Abou-Elella, G., Tawfik, A. Role of four Phytoseiid mite species and Acarophagous Ladybird, Stetlrorus gilvifrons (Mulsant) as Bioagents of the Two Spotted Spider Mite Tetranychus urticae Koch. test, 2021; 4(1): 47-55. doi: 10.21608/ajesa.2021.163530

Role of four Phytoseiid mite species and Acarophagous Ladybird, Stetlrorus gilvifrons (Mulsant) as Bioagents of the Two Spotted Spider Mite Tetranychus urticae Koch

Acarines: Journal of the Egyptian Society of Acarology
Article 10, Volume 4, Issue 1, 2010, Pages 47-55    PDF (6.23 M)
Document Type: Original research articles
DOI: 10.21608/ajesa.2021.163530
Authors
M. A. Osman1; G. M. Abou-Elella2; A. A. Tawfik3
1Agricultural Zoology Dept., Faulty of Agric., Mansoura Univ., Mansoura, Egypt.
2Pests and Plant Protection Dept., National Research Center, Dokki, Cairo. Egypt
3Plant Protection Research Institute, Agriculture Research Center, Dokki, Cairo, Egypt
Abstract
Predaceous insects and mites are important biological control agents of the two spotted spider mite Tetranychus urticae Koch. Biology and life table parameters of Stethorus gilvifrons Mulsant, Phytoseiulus persimilis A.-H., Neoseiulus cucumeris (Oud.), Typhlodromips swirskii (A.-H.) and Euseius scutalis A.-H. fed on T. urticae immature was studied at 28 ±1°C. Their female life cycle and life span averaged 17.66, 5.80, 4.40, 6.26 & 6.26 days and 47.60, 19.13, 38.00, l3.20 & 23.93 days, respectively. During its life span, average female fed on 1647. I 3, 343.53, 353.53, 345.66 & 200.33 with a daily rate 34.60, I 7.96, 9.30, 8.00 and 8.37 T. urticae immature respectively. The net rate of natural increase (rm) and the finite rate of increase (λ) of the aforementioned predators were 0.139, 0.294, 0.349, 0.26 I & 0.229; and 1.15, 1.34, 1.41, 1.29 & 1.25, respectively. These of T. urticae were 0.222 and 1.24, respectively.
Keywords
Stethorus gilvifrons; Phytoseiulus persimiUs; Neoseiulus cucumeris; Typhlodromips swirskii. Euseius scutalis; Tetranychus urticae; Life tables
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