scholarly journals Comparative Biology of Tetranychus urticae Koch (Acari: Tetranychidae) on Three Solanaceous Plants and the Predator Amblyseius hutu (Prichard & Baker) Acari: Phytoseiidae) as a Potential Biological Control Agent for Tetranychus urticae

2020 ◽  
Vol 11 (9) ◽  
pp. 473-476
Author(s):  
A. S. M. Mohamed ◽  
M. A. A. Abou-Shosha ◽  
M. H. Mowafi ◽  
A. A. Abd Allah ◽  
N. A. Mahmoud
Keyword(s):  
Biological Control ◽  
Tetranychus Urticae ◽  
Biological Control Agent ◽  
Control Agent ◽  
Comparative Biology ◽  
Solanaceous Plants ◽  
Tetranychus Urticae Koch

Development and Fecundity of Orius minutus (Hemiptera: Anthocoridae) and O. laevigatus Reared on Tetranychus urticae (Acari: Tetranychidae)

2020 ◽  
Vol 113 (4) ◽  
pp. 1735-1740
Author(s):  
Md Arefur Rahman ◽  
Souvic Sarker ◽  
Eunhye Ham ◽  
Jun-Seok Lee ◽  
Un Taek Lim
Keyword(s):  
Biological Control ◽  
Tetranychus Urticae ◽  
Biological Control Agent ◽  
Predation Rate ◽  
Control Agent ◽  
Hatch Rate ◽  
Polyphagous Predator ◽  
Significant Difference ◽  
Table Analysis ◽  
Tetranychus Urticae Koch

Abstract The polyphagous predator Orius species is a dominant predator of thrips, mites, and aphids. Orius laevigatus (Fieber) is a well-known commercialized and effective biological control agent, whereas Orius minutus (L.) distributed widely over the world has not been commercialized. To assess potentials of developing O. minutus as a commercial biological control agent, we compared the biological parameters of O. minutus with O. laevigatus when reared on mixed stages of Tetranychus urticae Koch at 27.5°C. Nymphal development of O. laevigatus was shorter (11.30 d) than that of O. minutus (12.25 d), but there was no significant difference in survivorship between the two species. Also, no significant difference was found in either the preoviposition or oviposition periods, lifetime fecundity, or longevity between the two species. However, O. minutus eggs had a higher hatch rate (0.77) than O. laevigatus (0.71). In life table analysis, no difference was found in any parameters, i.e., R0, rm, λ, T, and DT, between O. laevigatus and O. minutus in two-tailed t-tests. In a predation bioassay, O. minutus consumed 1.39 times more adult T. urticae in 24 h than did O. laevigatus, although the predation rate on T. urticae eggs was similar between the two species. These results suggest that O. minutus native to Korea could be developed as a biological control agent against T. urticae.

Functional and numerical responses of Neoseiulus californicus (McGregor) to eggs and nymphs of Oulenziella bakeri and Tetranychus urticae

2019 ◽  
Vol 24 (7) ◽  
pp. 1225-1235
Author(s):  
Rui Zhu ◽  
Jian-Jun Guo ◽  
Tian-Ci Yi ◽  
Rong Xiao ◽  
Dao-Chao Jin
Keyword(s):  
Tetranychus Urticae ◽  
Biological Control Agent ◽  
Good Alternative ◽  
Absolute Number ◽  
Control Agent ◽  
Commercial Production ◽  
Neoseiulus Californicus ◽  
Greenhouse Crops ◽  
The Difference ◽  
Tetranychus Urticae Koch

The predatory mite, Neoseiulus californicus (McGregor), is an important biological control agent of Tetranychus urticae Koch in greenhouse crops. Oulenziella bakeri is an important alternative prey for the commercial production of N. californicus. To confirm that the predatory relationship between N. californicus and O. bakeri is beneficial to the reproduction of N. californicus, the functional and numerical responses of N. californicus to O. bakeri and T. urticae were compared when exposed to six prey densities (2, 4, 8, 16, 32 and 64 individuals) under laboratory conditions. An analysis of the logistic regression showed that the adult female N. californicus displayed a type II functional response when fed on O. bakeri and T. urticae eggs and nymphs. The proportion of the consumed prey by N. californicus to the total supplied prey declined, even though the absolute number of predation events increased as the prey density increased. The Holling disc equation revealed that N. californicus had greater attack rates on the eggs (0.86-1.03) and nymphs (0.73-0.93) of T. urticae than those of O. bakeri, which were (0.55–0.73) and (0.71–0.96), respectively. N. californicus had longer handling times for the eggs (0.05–0.09) and nymphs (0.07–0.12) of O. bakeri compared with those of T. urticae, which were (0.03–0.05) and (0.04–0.07), respectively. The numbers of eggs laid by N. californicus feeding on eggs and nymphs of T. urticae were greater than those feeding on O. bakeri; but as the density increased, the difference in the oviposition rates between the predators feeding on two mites decreased. The comparison of the functional and numerical responses of the predator to O. bakeri and T. urticae revealed that the former is a good alternative food in the commercial production of N. californicus.

scholarly journals Potential predation and fecundity of Amblyseius aerialis fed two-spotted spider mite

2019 ◽  
Vol 9 (4) ◽  
pp. 748-753
Author(s):  
Anilde Da Graça Sousa Maciel ◽  
Roseane Cristina Predes Trindade ◽  
Edmilson Santos Silva ◽  
Márcia Daniela Dos Santos
Keyword(s):  
Biological Control ◽  
Spider Mite ◽  
Biological Control Agent ◽  
Petri Dish ◽  
Control Agent ◽  
Initial Amount ◽  
Two Spotted Spider Mite ◽  
Tetranychus Urticae Koch ◽  
Dead Prey ◽  
Bean Leaves

The mites of the Phytoseiidae family stand out for the biological control of pest mites. The species Amblyseius aerialis (Muma, 1955) is a generalist mite, which can contribute to the natural regulation of pest mites. The objective of this study was to evaluate the potential for predation and fecundity of A. aerialis on the different phases of Tetranychus urticae (Koch, 1836) (Acari: Tetranychidae). A female of A. aerialis was confined on dish (3.0 cm in diameter) of jack bean leaves, Canavalia ensiformis (L.) DC. The discs were left in petri dish with water. Each T. urticae phase was offered individually to A. aerialis at densities: 2, 5, 10, 15, 20 and 30 mites / arena. The number of prey consumed and eggs laid by A. aerialis were evaluated every 24 hours for seven days, with removal of laid eggs by phytoseiid and dead prey and replacement of prey in the initial amount. The data were submitted to analysis of variance and the means were compared by Tukey test, applying the factorial (4x6). It was observed that with the increase of the density of T. urticae offered there was an increase in the predation of A. aerialis. When offered the nymph and adult the average number of eggs per day was higher, differing from egg and larva. Thus, A. aerialis can be a biological control agent of the T. urticae, reducing the population of the pest and maintaining its fecundity in all phases and densities offered.

scholarly journals Kairomone Response, Pesticide Tolerance and Field Efficacy of the Predatory Mite, Neosieulus collegae (De Leon)

1991 ◽  
Vol 9 (3) ◽  
pp. 155-159 ◽  
Author(s):  
Russell F. Mizell ◽  
Daniel E. Schiffhauer
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Lima Bean ◽  
Predatory Mite ◽  
Control Agent ◽  
Predator Species ◽  
Unknown Species ◽  
Field Efficacy ◽  
Tetranychus Urticae Koch ◽  
Bean Leaves

Abstract Neosieulus (Cydnodromus) collegae (De Leon) (Acari:Phytoseiidae) is a heretofore relatively unknown species of predatory mite. In an olfactometer, female predators were attracted to kairomones produced by Tetranychus urticae Koch, Oligonychus ilicis (McGregor), O. ununguis (Jacobi), Eotetranychus hicoriae (McGregor), and E. sexmaculatus (Riley). Predators were repelled by odors emanating from lima bean leaves treated with Mavrik (fluvalinate) and Ammo (cypermethrin), but unresponsive to those treated with Tame (fenpropathrin) and Talstar (bifenthrin). This predator species was tolerant of residues of Vendex (hexakis), Omite (propargite), Pentac (dienochlor) and Avid (abamectin) but not to residues of Tame (fenpropathrin) and Kelthane (dicofol). Eggs of T. urticae treated with Tame (fenpropathrin) were toxic to the predator when consumed. Female N. collegae would not consume eggs treated with Avid (abamectin); starvation reduced fecundity. Prey eggs treated with Vendex (hexakis) and Omite CR (propargite) were consumed without affecting predator fecundity or mortality. Eggs treated with Pentac (dienochlor) or Kethane (dicofol) were consumed, but significantly reduced predator fecundity. Predators released into plots in a commercial nursery during winter in north Florida reduced field populations of T. urticae within 20–30 days, if released in high numbers. Neosieulus collegae may have significant potential as a biological control agent in nursery crops for control of mite pests.

scholarly journals Variability of infestation of rose varieties by the spider mite Tetranychus urticae under conditions of application of Phytoseiulus persimilis or acaricides

2021 ◽  
Vol 104 (4) ◽  
pp. 218-222
Author(s):  
V. V. Moor ◽  
A. I. Anisimov ◽  
E. G. Kozlova*
Keyword(s):  
Biological Control ◽  
Tetranychus Urticae ◽  
Spider Mite ◽  
Biological Control Agent ◽  
Ornamental Plants ◽  
Phytoseiulus Persimilis ◽  
Predatory Mite ◽  
Control Agent ◽  
Pest Mite ◽  
Two Spotted Spider Mite

The two-spotted spider mite Tetranychus urticae is a dangerous polyphagous pest of agricultural and ornamental plants. In a commercial greenhouse treated with acaricides or biological control using predatory mite Phytoseiulus persimilis individual varieties of roses differed significantly in terms of the average annual infestation by the pest mite. On the poorly populated rose varieties, the biological control agent application was more effective as compared to the acaricides. To effectively control the pest, the required predatory mite rates were 4.6–8.7 times higher on varieties with a minimal spider mite infestation (Aqua and Deep Water) as compared to the maximal pest infestation (Heaven and Brazil).

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