Host-dependent life history and life table parameters of Tetranychus truncatus (Acari: Tetranychidae)

Abstract

The effects of three economically important host plants, jute (Corchorus capsularis L.), bean (Lablab purpureus L.) and papaya (Carica papaya L.), on the development, reproduction and demographic parameters of the spider mite Tetranychus truncatus Ehara (Acari: Tetranychidae) were investigated under laboratory conditions of 30 ± 1°C, 60–80% RH and a photoperiod of 16L: 8D using age-stage, two-sex life table analysis. Both male and female T. truncatus successfully completed development from egg to adult on the three host plants. The development time from egg to adult for female T. truncatus was longer on Jute than on bean and papaya. Male and female longevities were higher on jute and bean than on papaya. Fecundity of T. truncatus was higher on jute than on bean and papaya. Adult pre-oviposition period was lower on bean and the number of oviposition days were higher on jute. The net reproduction rate of T. truncatus was significantly higher on jute than on bean and papaya, whereas intrinsic rate of natural increase and the finite rate of increase were higher on bean than on the other two host plants. The mean generation time of T. truncatus was higher on jute than on bean and papaya. These results based on the intrinsic rate of natural increase indicate that jute and bean were more suitable than papaya as hosts for T. truncatus, to helping develop management and control strategies for this pest.

Lethal and sublethal effects of bifenazate on the biological parameters of Tetranychus truncatus Ehara (Acari: Tetranychidae)

“…The leaves were placed on a water-saturated polyurethane mats in plastic Petri dishes and kept at 25°C, 60-80% RH and a photoperiod of 16L:8 D hours. The leaves were replaced approximately every 7 days as they became dried or overexploited due mite damage (Islam et al 2017).…”

Phylogenetic-Related Divergence in Perceiving Suitable Host Plants among Five Spider Mites Species (Acari: Tetranychidae)

“…For instance, the two-spotted spider mite Tetranychus urticae has been considered one of the most destructive agricultural pests in the world [ 1 ] and can feed on more than 1150 plant species from 140 different plant families [ 2 ]. Additionally, several other species also commonly occur in the field, such as Tetranychus kanzawai , Tetranychus truncatus , Tetranychus pueraricola, and Tetranychus evansi [ 3 , 4 , 5 , 6 , 7 ].…”

The Resistance of Seven Host Plants to Tetranychus merganser Boudreaux (Acari: Tetranychidae)

“…It is likely that T. merganser females lay a higher numbers of eggs on C. papaya than on other plant species, this is caused by differences in nutrient contents, morphological characteristics and different secondary metabolites found in different plant families. [26][27][28][29][30].…”

“…Studies suggest that a protein present in caricaceous, roseaceous, and asteraceous plants can increase the fecundity of T. urticae [29]. In this regard, Islam et al [28] mention that this occurs because adult females need feeding resources (e.g., nitrogen and carbohydrate) to develop mature ovaries and eggs and obtain energy.…”