&lt;p class="Body"&gt;&lt;strong&gt;Biology and fertility life table of &lt;em&gt;Oligonychus punicae&lt;/em&gt; Hirst (Acari: Tetranychidae) associated with eucalyptus in a clonal minigarden&lt;/strong&gt;&lt;/p&gt;

Oligonychus punicae has potential for development in several species of eucalyptus. In this study was evaluated the preference for permanence and oviposition of O. punicae in different eucalyptus species. Additionally, we evaluated its dynamics and population distribution, as well as injuries in strains of Eucalyptus urophylla in a clonal minigarden. The preference for permanence and oviposition of O. punicae was evaluated using a test with and without choice in six species of Eucalyptus. We also analyzed the dynamics, population distribution and injury levels by O. punicae on E. urophylla in a clonal minigarden. We collected samples for 24 months and counted the number of eggs, immature and adult individuals. We calculated the Morisita dispersion index. We estimated injuries on leaves of E. urophylla using visual notes. In the test with choice, Eucalyptus urophylla was the preferred host of O. punicae for permanence and oviposition. In the test without choice, the oviposition of O. punicae in eucalyptus species did not differ statistically until 24 hours of evaluation. However, there was a significant difference after 48 hours, with greater oviposition on Eucalyptus brassiana, Eucalyptus tereticornis and Eucalyptus grandis. In the population survey, we collected 3,293 mites. The population peak of O. punicae occurred in March and April 2018 and April 2019. Oligonychus punicae presented an aggregate distribution and caused injuries of 20% on average in leaves. These results are important to guide management strategies in specific infestation foci and optimizing the use of phytosanitary products.

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Host preference, population dynamics, distribution, and injuries of Oligonychus punicae (Acari: Tetranychidae) in an eucalyptus clonal minigarden

Ferraz

Silva

França

et al. 2020

saa

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Temperature-dependent development and reproduction of Oligonychus punicae (Acari: Tetranychidae) on Eucalyptus

Ferraz

Neto

França

et al. 2021

saa

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Temperature plays an important role in the development and reproduction of mites. The present study assesses how temperature affects the biology (development and survival of immatures) and life table parameters of Oligonychus punicae. This study also determines the mite thermal requirements (thermal requirement and development base temperature). The experiments were conducted in an air-conditioned chamber under different temperatures (21, 25, 29, 33, and 37ºC). The period of each stage (egg to adult) of O. punicae at different temperatures was used to determine the thermal constant and the lower thermal limit of development. The duration of the periods of pre-oviposition, oviposition, post-oviposition, fecundity, and longevity was recorded. The life table at different temperatures was created using data from the biological cycle. There was an inverse relationship between the development time of O. punicae and temperatures. However, there was no hatching of eggs at 37ºC. All O. punicae eggs resulted in females. The survival analysis for the immature and adult (female) stages of O. punicae showed a decreased life span with increasing temperatures. For the egg-adult period, the lower thermal threshold and the thermal constant for females of O. punicae were 10.34ºC and 163.93 degree-days, respectively. Temperature affected the periods of pre-oviposition, oviposition, and fecundity of adult females of O. punicae, tending to decrease with increasing temperatures. Specific fecundity varied over the oviposition period, decreasing with increasing temperatures. The net reproduction rate decreased significantly following temperatures 21°C to 33°C. The increase in temperature results in a significantly shorter average generation time. The intrinsic rate of increase ranged from 0.15 to 0.20. The finite rates of increase were all greater than 1.00. The effects of temperature on the development of O. punicae varies according to the stage of development. The optimum temperature for O. punicae is between 25 and 29ºC.

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Evaluation of Ethanolic Powdered Extract of Magnolia tamaulipana Vazquez against Oligonychus punicae Hirst (Trombidiformes: Tetranychidae)

Reyes-Zepeda

Heinz-Castro

Olazarán-Santibáñez

et al. 2022

Plants

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Avocado bronze mite (ABM), Oligonychus punicae Hirst (Trombidiformes: Tetranychidae) has potential for development in several plant species of agricultural importance. ABM is one of the most economically important pests in avocado cultivars, causing major damage to fruit and defoliation. At present, the control of ABM depends mainly on agrochemicals. Therefore, it is necessary to find alternatives to agrochemicals that can help minimize environmental impact and health risks for humans and mammals. The aim of this research was to assess the effect of different concentrations (5, 10, 50, 100, 250, 500, 1000 µg/mL) of ethanolic powdered extract of M. tamaulipana leaves against adult ABM females. The different concentrations of M. tamaulipana extract did not cause mortality of O. punicae. Females treated with 5 and 1000 µg/mL of the extract showed a decrease in the number of eggs laid per female at 24 (5.17 and 1.27), 48 (5.07 and 1.17), and 72 h (4.97 and 0.80), compared to the control treatment (5.20, 6.60 and 6.87), respectively, which led to a reduction in the growth rate. Percentage of feeding damage decreased with the increasing concentration of the extract. The ethanolic powdered extract of M. tamaulipana leaf has potential to control O. punicae.

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<p class="Body"><strong>Biology and fertility life table of <em>Oligonychus punicae</em> Hirst (Acari: Tetranychidae) associated with eucalyptus in a clonal minigarden</strong></p>

Cited by 3 publications

References 17 publications

<p class="Body"><strong>Host preference, population dynamics, distribution, and injuries of <em>Oligonychus punicae</em> (Acari: Tetranychidae) in an eucalyptus clonal minigarden</strong></p>

<p class="Body"><strong>Host preference, population dynamics, distribution, and injuries of <em>Oligonychus punicae</em> (Acari: Tetranychidae) in an eucalyptus clonal minigarden</strong></p>

<p><strong>Temperature-dependent development and reproduction of </strong><strong><em>Oligonychus punicae</em></strong><strong> (Acari: Tetranychidae) on Eucalyptus</strong></p>

Evaluation of Ethanolic Powdered Extract of Magnolia tamaulipana Vazquez against Oligonychus punicae Hirst (Trombidiformes: Tetranychidae)

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