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Life History of the Predatory Mite Phytoseiulus fragariae on Tetranychus evansi and Tetranychus urticae (Acari: Phytoseiidae, Tetranychidae) at Five Temperatures

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dc.contributor.author Vasconcelos, Geraldo José Nascimento de
dc.contributor.author Moraes, Gilberto José de
dc.contributor.author Delalibera, Ítalo Jr.
dc.contributor.author Knapp, Markus
dc.date.accessioned 2017-09-18T13:55:41Z
dc.date.available 2017-09-18T13:55:41Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/123456789/518
dc.identifier.uri https://link.springer.com/article/10.1007/s10493-007-9124-8
dc.description.abstract Tetranychus evansi Baker and Pritchard and Tetranychus urticae Koch (Acari: Tetranychidae) are important pests of Solanaceae in many countries. Several studies have demonstrated that T. urticae is an acceptable prey to many predatory mites, although the suitability of this prey depends on the host plant. T. evansi, has been shown to be an unfavorable prey to most predatory mites that have been tested against it. The predator Phytoseiulus fragariae Denmark and Schicha (Acari: Phytoseiidae) has been found in association with the two species in Brazil. The objective of this work was to compare biological parameters of P. fragariae on T. evansi and on T. urticae as prey. The study was conducted under laboratory conditions at 10, 15, 20, 25 and 30°C. At all temperatures, survivorship was lower on T. evansi than on T. urticae. No predator reached adulthood at 10°C on the former species; even on the latter species, only about 36% of the predators reached adulthood at 10°C. For both prey, in general, duration of each life stage was shorter, total fecundity was lower and intrinsic rate of population increase (rm) was higher with increasing temperatures. The slower rate of development of P. fragariae on T. evansi resulted in a slightly higher thermal requirement (103.9 degree-days) on that prey than on T. urticae (97.1 degree-days). The values of net reproduction rate (R0), intrinsic rate of increase (rm) and Wnite rate of increase ( ) were signiWcantly higher on T. urticae, indicating faster population increase of the predator on this prey species. The highest value of rm of the predator was 0.154 and 0.337 female per female per day on T. evansi and on T. urticae, respectively. The results suggested that P. fragariae cannot be considered a good predator of T. evansi. en_US
dc.description.sponsorship Conselho Nacional de Desenvolvimento CientíWco e Tecnológico (CNPq), Ministério da Ciência e Tecnologia do Brasil” and the German Federal Ministry for Economic Cooperation and Development (BMZ) en_US
dc.publisher Springer Science + Business Media en_US
dc.rights Attribution-NonCommercial-ShareAlike 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/us/ *
dc.subject Tetranychus evansi en_US
dc.subject Tetranychus urticae en_US
dc.subject Phytoseiulus fragariae en_US
dc.subject Two-spotted spider mite en_US
dc.subject Predatory mites en_US
dc.subject Biological control en_US
dc.subject Solanaceae en_US
dc.title Life History of the Predatory Mite Phytoseiulus fragariae on Tetranychus evansi and Tetranychus urticae (Acari: Phytoseiidae, Tetranychidae) at Five Temperatures en_US
dc.type Article en_US


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