How pollen supplementary diet affect life table and predation capacity of Neoseiulus californicus on two-spotted spider mite 

2017 ◽  
Vol 22 (1) ◽  
pp. 135 ◽  
Author(s):  
Mostafa Khanamani ◽  
Yaghoub Fathipour ◽  
Ali Asghar Talebi ◽  
Mohammad Mehrabadi
Keyword(s):  
Life Table ◽  
Spider Mite ◽  
The Other ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Maize Pollen ◽  
Rate Of Increase ◽  
Pollen Types ◽  
Predation Capacity ◽  
Two Spotted Spider Mite

Supply of alternative food is generally thought to enhance the performance of generalist predatory mites. The effects of three different pollens (maize, date palm, and bee-collected pollen) as supplementary diets on the life table and predation capacity of Neoseiulus californicus McGregor (Acari: Phytoseiidae) on two-spotted spider mite (TSSM) were determined. Total fecundity on TSSM in the presence of the pollen was significantly higher than those on the pollen alone. The intrinsic rate of increase (r) on TSSM in the presence of the maize pollen (0.1409 day-1) was significantly higher than those on TSSM (as control) and/or the other diets. In addition, N. californicus consumed fewer prey in the presence of the maize pollen than the other pollen types. However, lower prey consumption in the presence of this pollen was compensated by an increase in reproduction and survive. In conclusion, the effectiveness of N. californicus on TSSM in the presence of the maize pollen was superior to the other pollens. However, although the other pollen types had no obvious positive effect on the performance of N. californicus, they might increase long-term persistence of the predator-prey system. 

scholarly journals Effects of B-azolemiteacrylic on life-history traits and demographic parameters of two-spotted spider mite, Tetranychus urticae (Acari: Tetranychidae)

2021 ◽  
Author(s):  
Suqin Shang ◽  
Yun Chang ◽  
Wei-Zhen Li ◽  
Wang Chang-Qing ◽  
Nie Peng-Cheng
Keyword(s):  
Tetranychus Urticae ◽  
Spider Mite ◽  
Sublethal Effects ◽  
Oviposition Period ◽  
Population Doubling ◽  
Intrinsic Rate Of Increase ◽  
Population Doubling Time ◽  
Developmental Duration ◽  
Rate Of Increase ◽  
Two Spotted Spider Mite

AbstractThe present study was conducted to evaluate sublethal effects of B-azolemiteacrylic on the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae). Female adults of T. urticae were exposed to LC10 and LC30 of the acaricide, and the effects on treated females and their offspring were evaluated. The results showed that the fecundity of F0 female adults treated with LC10 and LC30 of B-azolemiteacrylic was reduced by 30.9 and 39.2%, respectively. Longevity and oviposition period of the females were significantly reduced as well. The developmental duration of egg and deutonymph stage of the F1 generation were not significantly different from that of the control. The protonymph stage after LC30 treatment lasted significantly longer, whereas the larva, deutonymph and female stage were significantly shorter than the control. The oviposition period of the F1 generation was significantly shortened, the fecundity of each female decreased significantly, and the ratio of female-to-male was reduced too. Moreover, the average generation period of T. urticae after LC10 and LC30 treatments was shorter than that of the control, and the net production rate (R0), intrinsic rate of increase (rm) and finite rate of increase (λ) were all reduced by 33.3, 7.5 and 1.9% (LC10 treatment) and by 51.3, 14.8 and 3.6% (LC30 treatment), respectively. The population doubling time was prolonged by 7.5 and 14.8% after LC10 and LC30 treatments, respectively, compared with the control. These results indicate that B-azolemiteacrylic may effectively inhibit the development rate of the F0 and F1 populations of T. urticae, which will help design integrated strategies for the comprehensive control of T. urticae and rational use of pesticides in the field.

Havasi, M., Kheradmand, K., Mosallanejad, H. & Fathipour, Y. (2020) Life history traits and demographic parameters of Neoseiulus californicus McGregor (Acari: Phytoseiidae) treated with the Biomite®. Systematic & Applied Acarology, 25(1), 125–138.

2020 ◽  
Vol 25 (3) ◽  
pp. 411
Author(s):  
Mohammadreza Havasi ◽  
Katayoon Kheradmand ◽  
Hadi Mosallanejad ◽  
Yaghoub Fathipour
Keyword(s):  
Life History ◽  
Life Span ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Life Table ◽  
Reproductive Rate ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Rate Of Increase ◽  
Total Life

Knowledge of the effects of pesticides on biological control agents is necessary for the successful implementation of integrated pest management programs. Laboratory bioassays were conducted to evaluate the effects of Biomite®, a natural acaricide, on the life table parameters of Neoseiulus californicus McGregor (Acari: Phytoseiidae), as one of the most important natural enemies of Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions at 25 ± 2°C, 65 ± 5% RH and a photoperiod of 16:8 (L:D) h. The raw data were analyzed based on the two-sex life table theory. Biomite® concentrations LC10 and LC20 gradually and significantly reduced the longevity and total life span of both sexes, as well as total fecundity. Besides, concentration LC20 significantly reduced the gross reproductive rate (GRR) and the net reproductive rate (R0). However, the intrinsic rate of increase (r) and the finite rate of increase (λ) were not significantly affected. Thereby, due to an unfavorable shortened in life history characters of N. californicus such as total life span, reproductive periods and biological parameters (such as R0 and GRR), as a consequence of Biomite® treatment, it can be concluded that this acaricide should not be used with N. californicus in integrated pest management programs.

Resistant rose cultivar affects life table parameters of two-spotted spider mite and its predators Phytoseiulus persimilis and Amblyseius swirskii (Phytoseiidae) 

2019 ◽  
Vol 24 (9) ◽  
pp. 1620-1630 ◽  
Author(s):  
Zahra Alipour ◽  
Yaghoub Fathipour ◽  
Azadeh Farazmand ◽  
Mostafa Khanamani
Keyword(s):  
Life Table ◽  
Phytoseiulus Persimilis ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Resistant Cultivars ◽  
Rate Of Increase ◽  
The Mean ◽  
Two Spotted Spider Mite

Herbivores' host plant resistance may also affect performance of their predators. The effect of susceptible ('Yellow') and resistant ('Roulette') rose cultivars on demographic parameters of the two-spotted spider mite (TSSM), Tetranychus urticae Koch and its predators Phytoseiulus persimilis Athias-Henriot and Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) was determined under laboratory conditions. The obtained data were analyzed using the two-sex life table theory. The development rate of different life stages of TSSM and its predators on the susceptible and resistant rose cultivars were significantly different. Total development time of juvenile stages of TSSM and A. swirskii on the resistant cultivar was longer than that on the susceptible one, although no significant differences were obtained in the case of P. persimilis. By using the two-sex life table, the intrinsic rate of increase (r) of TSSM on the susceptible and resistant cultivars was 0.205 and 0.143 day-1, respectively. In addition, the net reproductive rate (R0) of TSSM on the susceptible and resistant cultivars was 26.46 and 11.47 eggs per individual, respectively; however, the mean generation time (T) of TSSM on these cultivars was 15.92 and 16.92 days, respectively. Furthermore, the value of the intrinsic rate of increase (r) in P. persimilis on the susceptible and resistant cultivars was 0.217 versus 0.163 day-1as well as in A. swirskii on the mentioned cultivars was 0.147 versus 0.117 day-1, respectively. There was no significant difference between the values of the net reproductive rate (R0) in P. persimilis on the susceptible and resistant rose cultivars, but in A. swirskii the value of this parameter on the susceptible cultivar was significantly higher than that on the resistant one. The mean generation time (T) in both predators on the resistant cultivar was longer than the susceptible one. In conclusion, resistance of the rose cultivar negatively affected the population growth parameters of TSSM and its both predators.

scholarly journals Resistance of New Strawberry Genotypes to the Two-Spotted Spider Mite (Acari: Tetranychidae)

2017 ◽  
Vol 9 (8) ◽  
pp. 119
Author(s):  
Fernanda De Cássia Neves Esteca ◽  
Camila Do Nascimento Dainese ◽  
Luis Rodolfo Rodrigues ◽  
André Luiz Lourenção ◽  
Francisco Antonio Passos ◽  
...  
Keyword(s):  
Spider Mite ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Artificial Infestation ◽  
Rate Of Increase ◽  
Two Spotted Spider Mite ◽  
Tetranychus Urticae Koch ◽  
Moderately Resistant

The two-spotted spider mite, Tetranychus urticae Koch, is one of the main strawberry pests in Brazil and many other countries. The objective of this study was to compare the resistance of eight strawberry genotypes (‘Albion’, ‘IAC Guarani’, ‘IAC Princesa Isabel’, ‘Oso Grande’, IAC T-0104, IAC 12, IAC 4 and IAC 1.13) to the two-spotted spider mite, by assessing injury level, biological parameters and host preference of the mite. To facilitate the interpretation of the results, leaf trichomes of each genotype were quantified. Thirty days after the artificial infestation of the genotypes with the mite, IAC T-0104, IAC 12 and ‘IAC Princesa Isabel’ showed the lowest injury levels. ‘IAC Princesa Isabel’, IAC 4 and IAC T-0104 were distinguished from other genotypes by the highest mean generation time (T) of the mite, while ‘IAC Guarani’ was distinguished by the lowest T value. Significantly lower values of intrinsic rate of increase (rm), finite rate of increase (λ) and net reproductive rate (Ro) were determined on ‘IAC Princesa Isabel’ and IAC 1.13. The mite showed preference for ‘IAC Guarani’, as inferred by the larger number of females when offered the chance to select the detached host leaflets. Trichome density was highest on IAC 1.13 and lowest on IAC T-0104, IAC 12, ‘Albion’ and ‘Oso Grande’. The results suggested that ‘IAC Princesa Isabel’, IAC T-0104 and IAC 12 are resistant, IAC 4 and IAC 1.13 are moderately resistant, and ‘IAC Guarani’, ‘Oso Grande’ and ‘Albion’ are susceptible to the mite.

Life history traits and demographic parameters of Neoseiulus californicus McGregor (Acari: Phytoseiidae) treated with the Biomite® 

2020 ◽  
Vol 25 (1) ◽  
pp. 125-138
Author(s):  
Mohammadreza Havasi ◽  
Katayoon Kheradmand ◽  
Hadi Mosallanejad ◽  
Yaghoub Fathipour
Keyword(s):  
Life History ◽  
Life Span ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Life Table ◽  
Reproductive Rate ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Rate Of Increase ◽  
Total Life

Knowledge of the effects of pesticides on biological control agents is necessary for the successful implementation of integrated pest management programs. Laboratory bioassays were conducted to evaluate the effects of Biomite®, a natural acaricide, on the life table parameters of Neoseiulus californicus McGregor (Acari: Phytoseiidae), as one of the most important natural enemies of Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions at 25 ± 2°C, 65 ± 5% RH and a photoperiod of 16:8 (L:D) h. The raw data were analyzed based on the two-sex life table theory. Biomite® concentrations LC10 and LC20 gradually and significantly reduced the longevity and total life span of both sexes, as well as total fecundity. Besides, concentration LC20 significantly reduced the gross reproductive rate (GRR) and the net reproductive rate (R0). However, the intrinsic rate of increase (r) and the finite rate of increase (λ) were not significantly affected. Thereby, due to an unfavorable shortened in life history characters of N. californicus such as total life span, reproductive periods and biological parameters (such as R0 and GRR), as a consequence of Biomite® treatment, it can be concluded that this acaricide should not be used with N. californicus in integrated pest management programs.

scholarly journals Biological aspects of the two-spotted spider mite on strawberry plants under silicon application

2021 ◽  
Vol 39 (1) ◽  
pp. 5-10
Author(s):  
Edenilson B Ribeiro ◽  
Maria Aparecida Castellani ◽  
Daniel Júnior de Andrade ◽  
Renato de M Prado ◽  
Larissa Adelita SC Souza ◽  
...  
Keyword(s):  
Spider Mite ◽  
Integrated Management ◽  
Intrinsic Rate ◽  
Potassium Silicate ◽  
Intrinsic Rate Of Increase ◽  
Reproduction Rate ◽  
Long Run ◽  
Rate Of Increase ◽  
Two Spotted Spider Mite ◽  
Net Reproduction

ABSTRACT Silicon is an inducer of plant resistance to arthropod pests, being a promising strategy for integrated management. The aim of this study was to evaluate the effect of silicon on biological, reproductive and population aspects of parental and F1 generations of the two-spotted spider mite on strawberry plants. Potassium silicate, nanosilica and water were applied to the plants. Two-spotted spider mite females were confined to strawberry leaf disks for oviposition and, after hatching, larvae were observed until the emergence of adults. Once adults had been obtained, couples were formed in order to evaluate pre-oviposition, oviposition, longevity and fertility, with an estimated net reproduction rate, intrinsic rate of increase, finite rate of increase and the necessary time for doubling the generation. Silicon prolonged the duration of some immature stages of the mites in parental and F1 generations, did not affect the duration of the whole biological cycle, though. The periods of pre-oviposition, oviposition and longevity of the parental generation and the longevity and oviposition of F1 generation of the two-spotted spider mite were negatively affected by potassium silicate and nanosilica. The population parameters of the parental generation of the mites indicated that nanosilica is able to lead to a long-run decrease of this pest population.

scholarly journals Sublethal Effects of Atropa belladonna Herbal Extract on Biological Performance of the Two-Spotted Spider Mite Tetranychus urticae Koch (Acari: Tetranychidae)

2018 ◽  
Vol 10 (7) ◽  
pp. 230
Author(s):  
Ayad Alsendi ◽  
Mohammadreza Havasi ◽  
Niloufar Sangak Sani Bozhgani
Keyword(s):  
Tetranychus Urticae ◽  
Spider Mite ◽  
Herbal Extract ◽  
Control Treatment ◽  
Intrinsic Rate Of Increase ◽  
Atropa Belladonna ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Two Spotted Spider Mite ◽  
Tetranychus Urticae Koch

The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) is one of the most important pests of agricultural products. Using chemical pesticides is one of the main methods for its management. Due to undesirable effects of synthetic pesticides, this research was conducted to achieve alternative safe compounds. In this study sublethal effect of Atropa belladonna herbal extract including LC10, LC20, LC30 and distilled water were evaluated on biological parameters (such as r, λ, GRR, R0 and T) of T. urticae. The experiments were done under laboratory condition at 25±2 °C, 60±5% RH, and a photoperiod of 16:8 (L: D) hours. The crude data were analyzed based on age-stage, two-sex life table analysis. The results indicated significant reduction in female’s duration of maturation, oviposition period and total fecundity by increasing examined dose. The highest and lowest values of the net reproductive rate (R0) were obtained 38.41 and 18.08 offspring/individual in control and LC30, respectively. The maximum values of intrinsic rate of increase (r) was 0.2201 day-1that occurred on control treatment while the minimum values was obtained 0.1937 day-1 in LC30 concentration. Finite rate of increase (λ) had significantly descended with concentration enhancing from LC20 to LC30, compared with the control. The results demonstrated that Atropa belladonna herbal extract could be incorporated in integrated pest management (IPM) programs of T. urticae.

scholarly journals Demographic analysis of sublethal effects of spiromesifen on Neoseiulus californicus (Acari: Phytoseiidae)

Acarologia ◽  
2017 ◽  
Vol 57 (3) ◽  
pp. 571-580
Author(s):  
Maryam Ghadim Mollaloo ◽  
Katayoon Kheradmand ◽  
Reza Sadeghi ◽  
Ali Aasghar Talebi
Keyword(s):  
Life Table ◽  
Sublethal Effects ◽  
Sublethal Effect ◽  
Reproductive Rate ◽  
Neoseiulus Californicus ◽  
Control Treatment ◽  
Intrinsic Rate Of Increase ◽  
Life Table Parameters ◽  
Net Reproductive Rate ◽  
Rate Of Increase

The sublethal effect of spiromesifen on life table parameters of Neoseiulus californicus McGregor (Acari: Phytoseiidae) was evaluated under laboratory conditions 25±1 °C, 65±5% RH and 16:8 (L:D) h. To take both sexes and the variable developmental rate among individuals into consideration, the raw data were analyzed based on the age stage, two sex life table. The estimated values of LC5, LC10 and LC15 for N. californicus are found to be 5.834, 9.529 and 13.267 ppm, respectively. The total preoviposition period of N. californicus treated with sublethal concentrations of spiromesifen was not significantly longer than for the control treatment. The minimum total fecundity was recorded for the LC15 concentration of spiromesifen (19.37 eggs/female) that was significantly different to the LC5 and control treatments. Compared with the control, the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0) and gross reproduction rates (GRR) of mites treated by the dose of the LC15 concentration, decreased significantly but the mean generation time (T) was not affected by this sublethal concentration. Our results indicated that increasing concentrations of spiromesifen had significant negative effects on life table parameters of N. californicus.These quantities should not be used in combination with N. californicus in integrated pest management programs in order to obtain optimal of biological control conclusions.

scholarly journals Life history of Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) fed with castor bean (Ricinus communisL.) pollen in laboratory conditions

2014 ◽  
Vol 74 (3) ◽  
pp. 691-697 ◽  
Author(s):  
PP Marafeli ◽  
PR Reis ◽  
EC. da Silveira ◽  
GC Souza-Pimentel ◽  
MA. de Toledo
Keyword(s):  
Life History ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Intrinsic Rate ◽  
Predatory Mite ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Ricinus Communis L ◽  
Rate Of Increase ◽  
History Of

The predatory mite, Neoseiulus californicus(McGregor, 1954) (Acari: Phytoseiidae) is one of the principal natural enemies of tetranychid mites in several countries, promoting efficient control of those mites in several food and ornamental crops. Pest attacks such as that of the spider mite, Tetranychus urticaeKoch, 1836 (Acari: Tetranychidae), is one of the problems faced by farmers, especially in the greenhouse, due to the difficulty of its control with the use of chemicals because of the development of fast resistance making it hard to control it. The objective of this work was to study the life history of the predatory mite N. californicus as a contribution to its mass laboratory rearing, having castor bean plant [Ricinus communis L. (Euphorbiaceae)] pollen as food, for its subsequent use as a natural enemy of T. urticae on a cultivation of greenhouse rosebushes. The studies were carried out in the laboratory, at 25 ± 2°C of temperature, 70 ± 10% RH and a 14 hour photophase. The biological aspects and the fertility life table were appraised. Longevity of 32.9 days was verified for adult females and 40.4 days for males. The intrinsic rate of increase (rm) was 0.2 and the mean generation time (T) was 17.2 days. The population doubled every 4.1 days. The results obtained were similar to those in which the predatory mite N. californicus fed on T. urticae.

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