Reproductive parameters of Phytoseiulus macropilis (Banks) fed with Tetranychus urticae Koch (Acari: Phytoseiidae, Tetranychidae) in laboratory

Abstract

Predatory mites that belong to the Phytoseiidae family are one of the main natural enemies of phytophagous mites, thus allowing for their use as a biological control. Phytoseiulus macropilis (Banks, 1904) (Acari: Phytoseiidae) is among the main species of predatory mites used for this purpose. Tetranychus urticae Koch, 1836 (Acari: Tetranychidae) is considered to be one of the most important species of mite pests and has been described as attacking over 1,100 species of plants in 140 families with economic value. The objective of the present study was to investigate, in the laboratory, the reproductive parameters of the predatory mite P. macropilis when fed T. urticae. Experiments were conducted under laboratory conditions at 25 ± 2 °C of temperature, 70 ± 10% RH and 14 hours of photophase. In addition, biological aspects were evaluated and a fertility life table was established. The results of these experiments demonstrated that the longevity of adult female was 27.5 days and adult male was 29.0 days. The population was estimated to increase approximately 27 times (R o ) in mean generation time (T), which was 17.7 days. Lastly, the mite population grew 1.2 times/day (λ) and doubled every 3.7 days (TD).Keywords: agricultural acarology, two-spotted spider mite, fertility life table, biology, biological control. Parâmetros reprodutivos de Phytoseiulus macropilis (Banks)predando Tetranychus urticae Koch (Acari: Phytoseiidae, Tetranychidae) em laboratório ResumoOs ácaros predadores pertencentes à família Phytoseiidae constituem um dos principais inimigos naturais de ácaros fitófagos, o que possibilita o seu uso em controle biológico. Entre as principais espécies destaca-se Phytoseiulus macropilis (Banks, 1904) (Acari: Phytoseiidae). O ácaro Tetranychus urticae Koch, 1836 (Acari: Tetranychidae) é considerado uma das espécies de ácaros-praga mais importantes, atacando mais de 1.100 espécies de plantas em 140 famílias de valor econômico. Este trabalho foi realizado com o objetivo de estudar, em laboratório, os parâmetros reprodutivos do ácaro predador P. macropilis, quando alimentado com T. urticae. Os estudos foram conduzidos em laboratório à temperatura de 25 ± 2 °C, 70 ± 10% de UR e 14 horas de fotofase e foram avaliados os aspectos biológicos e confeccionada a tabela de vida de fertilidade. Foi constatada uma longevidade de 27,5 dias para fêmeas adultas e 29,0 dias para machos. A população foi estimada em aumentar aproximadamente 27 vezes (R o ) no período médio de duração de geração (T) que foi de 17,7 dias. A população do ácaro cresceu 1,2vezes/dia (λ) e dobrou a cada 3,7 dias (TD).Palavras-chave: acarologia agrícola, ácaro-rajado, tabela de vida de fertilidade, biologia, controle biológico.

Ontogenetic stage-specific reciprocal intraguild predation

“…Both predators have five developmental stages: egg, larva, protonymph, deutonymph (the latter three here together referred to as juvenile) and adult. The size of each stage is similar for both species, and the duration of their development from egg to adult is about 5 days for both species (Escudero and Ferragut 2005 ; Souza-Pimentel et al 2017 ). Both protonymphs and deutonymphs need to feed to complete their development and although most predatory mite larvae do not need to feed to reach the next stage, the larvae of our system were observed feeding.…”

Biological control in ornamental plants: from basic to applied knowledge

“…However, phytoseiid performance can vary greatly among pollen sources (Vacacela Ajila et al, 2018). Although N. californicus took longer to suppress the T. urticae population compared to Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae) (Souza-Pimentel et al, 2017), it persisted longer on the plants after preys were reduced to low densities (Vacacela Ajila et al, 2018). Thus, the success of N. californicus is partially due to a number of factors, including its feeding habits and its ability to suppress T. urticae under varying weather conditions (Akyazi et al, 2019).…”

“…This predator has desirable attributes for biological control programs spider mite, such as a shorter life cycle compared with T. urticae (Fadini et al, 2004), a high predation rate in greenhouse, and an ability to control spider mite populations, even when released at high population densities of the pest (Oliveira et al, 2009). Despite a high capacity to reduce pest populations (Souza-Pimentel et al, 2017), the exclusively carnivorous predators persist poorly in the environment at low prey densities. However, this specialist predator suppressed the population of T. urticae faster than N. californicus, leading to the extinction of both pest and predator populations three weeks after the predators were released (Vacacela Ajila et al, 2018).…”

Extractos Acuosos de Cecropia peltata L. y Trema Micrantha Blumen como una Alternativa para el Control de Tetranichus Urtice Koch

“…Las propiedades que poseen estas especies podrían ser de utilidad para el control de la araña roja Tetranychus urticae pág. 3745 Koch (Acari: Tetranychidae) la cual es una especie de acaro fitófago polífago, muy importante en los cultivos bajo invernadero, principalmente de tomate y fresa Cerna et al, 2009), el principal control para combatirla son producto químicos, sin embargo ha desarrollado alta resistencia a diversos acaricidas principalmente por su elevada tasa reproductiva y rapida adaptación a diferentes condiciones climatológicas (Souza-Pimentel et al, 2017;Herrón et al, 2004, Villegas-Elizalde, 2010. Por lo que el objetivo de este trabajo fue evaluar los extractos acuosos de C. peltata y T. micrantha a diferentes dosis para el control de la araña roja T. urticae en condiciones de laboratorio.…”