Effects of native plants and IGRs on the development of &lt;i&gt;Tetranychus urticae&lt;/i&gt; Koch (Acari: Tetranychidae)

Naher, N; Islam, Tamanna; Haque, Ziaul; Parween, Selina

doi:10.3329/ujzru.v25i0.320

Cited by 16 publications

(8 citation statements)

References 13 publications

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“…To accomplish the experiments, the leaf disc method was used (Naher et al ., 2006). The arenas were constructed from two plastic Petri dishes; one was smaller (3 cm diameter × l cm height with a hole in its center [0.5 cm diameter]) and the other was larger (8 cm diameter × 1.5 cm height).…”

Section: Methodsmentioning

confidence: 99%

Comparative life table analysis ofTetranychus urticae(Acari: Tetranychidae) on 14 soybean genotypes

2010

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The life table parameters of two‐spotted spider mite (TSSM), Tetranychus urticae Koch, on 14 soybean genotypes (Sari, Sahar, Tellar, Zane, Ks3494, L17, Dpx, 032, 033, Clark, Hill, I27, Tms and Williams) were evaluated at 28 ± 1°C, 65%± 5% RH and a photoperiod of 16 : 8 h L : D. The survivorship data (lx) of adult females were fitted to the Weibull frequency distribution model in all genotypes tested. Based on the Weibull parameters, the survival curve was type I on all genotypes, which indicated that the mortality mostly occurred in old individuals. Furthermore, two mathematical models (Analytis and Enkegaard) were fitted to age‐specific fecundity data (mx). The highest intrinsic rate of increase (rm) was recorded on L17 (0.392) and the lowest values of this parameter were obtained on Tms (0.233), Hill (0.236), 032 (0.236), I27 (0.237) and Clark (0.240). In addition, net reproductive rate (R0) and finite rate of increase (λ) of the TSSM had the highest value on L17 as 45.521 and 1.475, respectively. The lowest values of these parameters were recorded on Tms as 12.149 and 1.258, respectively. Doubling time (DT) varied significantly on different genotypes and the shortest and longest values of this period were obtained on L17 and 032, respectively. Our findings revealed that Tms, Hill, 032, I27 and Clark were less suitable genotypes, suggesting that they are more resistant to the TSSM than the other genotypes.

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Section: Methodsmentioning

confidence: 99%

Comparative life table analysis ofTetranychus urticae(Acari: Tetranychidae) on 14 soybean genotypes

2010

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“…Spider mites (Acari: Prostigmata: Tetranychidae) are obligated predatory plant mites, which are unique in possessing highly elongated movable stylets used to puncture the individual cells of their host plants (Walter et al, 2009). Pests of known economic significance belonging to this group are the two-spotted mites, Tetranychus urticae Koch, which are considered as violent pest that affects vegetables, orchards, medicinal, and ornamental plants (Naher et al, 2006). The conventional control of this pest includes acaricides that have been widely used for mite control in greenhouses, orchards, and many other cropping systems (Van Leeuwen et al, 2005), but it can cause undesirable problems like the death of natural enemies such as predators or development of pesticide-resistant races of mites and residue concerns (Draganova and Simova, 2010).…”

Section: Introductionmentioning

confidence: 99%

Virulence and proteolytic activity of entomopathogenic fungi against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)

Elhakim

Mohamed

El-Azouni

2020

Egypt J Biol Pest Control

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The virulence and proteolytic activity of some entomopathogenic fungi isolates, viz., Metarhizium anisopliae, Beauveria bassiana, Verticillium lecanii, and Trichoderma harzianum, against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), were evaluated. Common maize plants (Zea mays L.) infested with females of T. urticae were treated in vivo by spraying with suspensions of 1 × 10 8 conidia ml −1 concentration of selected isolates. Lethal effects of fungal isolates were assessed as percentages of daily mortalities of mites, compared to the mortality in control. Virulence of the fungi isolates was estimated based on the LC 50 values calculated by probit analysis for the individuals treated by 1 × 10 5 conidia ml −1 concentration. Proteolytic activity of isolates was assayed on casein substrate to reflect their virulence towards T. urticae. The mite mortality rates increased with increasing conidial concentrations as well as days after treatment. The mortality rate caused by M. anisopliae isolate varied from 18.75 to 85%, with LC 50 value of 4.6 × 10 5 conidia/ml and LC 90 value of 2.4 × 10 8 conidia/ml during 7 days, respectively. The isolate of B. bassiana caused 15 to 70% mortality, and its LC 50 and LC 90 values estimated 3.3 × 10 6 and 7.8 × 10 9 conidia/ml, respectively. However, V. lecanii isolate caused 11.25 to 72.50% mortality with LC 50 of 5.2 × 10 6 conidia/ml, while T. harzianum was potentially less virulent than other isolates causing 8.75 to 63.75% mortality rate to T. urticae with LC 50 of 9.4 × 10 6 conidia/ml. M. anisopliae showed the highest proteolytic activity at all concentrations, followed by B. bassiana in 3rd, 5th, and 7th day post treatment. These findings recommend the selection of virulent fungal isolates for use as natural and environmentally safe agents in biological control programs to combat mite pests.

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“…All the leaf discs batches were changed with fresh discs after 3-4 days (Yousri, 1987;Martínez-villar et al, 2005). Daily observations were continued after eclosion of the larvae to determine the developmental period of immature stages up to adulthood (Naher et al, 2006;Silva et al, 2009).…”

Section: Female Mite Fecundity Fertility and Offspring Development Umentioning

confidence: 99%

Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae

Ismail

Abo-Ghalia

Soliman

et al. 2011

Egyptian Academic Journal of Biological Sciences, B. Zoology

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Certain effects of different spectral light colors were studied on some biological attributes of the two-spotted spider mite, Tetranychus urticae. Rearing of animals was carried out under conditions of 27±0.5°C; 60% R.H. and 16 L/8 D photoperiod on Sweet Potato leaves. Thus, 5 artificial light colors were applied under controlled laboratory conditions on these animals: blue, red, green, yellow and white Neon. After treatment, the highest number of deposited eggs/female was observed by using the blue color (14.9±0.5 eggs/female) while the lowest one was the yellow (3.1±0.2 eggs/female) compared to 9.9±0.4 eggs/female for the control group. On the other hand, diapause incidence was observed for the target females under conditions of 18±2°C; 60±2% R.H. and the light and dark periods were set at 8 L/16 D, respectively. Results showed that white Neon color caused the highest percentage of diapausing females (88.66±1.8%) followed by green color (78±3.5%), yellow (68.66±2%), the blue color with (54±2%), and finally none of them entered diapause under red color. Results were analyzed and discussed for the aforementioned important economic pest animals.

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Effects of native plants and IGRs on the development of <i>Tetranychus urticae</i> Koch (Acari: Tetranychidae)

Cited by 16 publications

References 13 publications

Comparative life table analysis ofTetranychus urticae(Acari: Tetranychidae) on 14 soybean genotypes

Comparative life table analysis ofTetranychus urticae(Acari: Tetranychidae) on 14 soybean genotypes

Virulence and proteolytic activity of entomopathogenic fungi against the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae)

Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae

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