Temperature-dependent development and reproductive traits of Tetranychus macfarlanei (Acari: Tetranychidae)

Abstract

Development and reproductive traits of Tetranychus macfarlanei Baker & Pritchard (Acari: Tetranychidae) were investigated on kidney bean, Phaseolus vulgaris L., at eleven constant temperatures. Tetranychus macfarlanei was able to develop and complete its life cycle at temperatures ranging from 17.5 to 37.5°C. At 15 and 40°C, a few eggs (2-4%) hatched but further development was arrested. Development from egg to adult was slowest at 17.5°C and fastest at 35°C for both females and males. Using Ikemoto and Takai's linear model, the estimated lower developmental thresholds for egg-to-female adult, egg-to-male adult and egg-to-egg development were 12.9-13.0°C. The thermal constants for the respective stages were 110.85, 115.99 and 125.32 degree-days (DD). The intrinsic optimum temperatures (T (Φ)) calculated by non-linear SSI model were determined as 24.4, 24.4 and 24.2°C for egg-to-female adult, egg-to-male adult and egg-to-egg development, respectively. The net reproductive rate (R (0)) was highest at 25°C (167.4 females per female) and lowest at 17.5°C (42.6 females per female). The intrinsic rate of natural increase, r (m), increased linearly with the rising of temperature from 0.102 at 17.5°C to 0.441 day(-1) at 35°C. These values suggested that T. macfarlanei could be growing quickly in response to increasing temperatures from 17.5 to 35°C and provide a basis for predicting its potential geographical range.

New Bacillus thuringiensis strain isolated from the gut of Malabari goat is effective against Tetranychus macfarlanei

“…Duration of time required for the development of egg to adult in acarids varies greatly depending on temperature (Ullah et al. ). As demonstrated, the life cycle of T. macfarlanei was completed within 10 days at 35°C (laboratory condition), the average temperature of the place where this study was conducted.…”

Development and Reproductive Capacity of the Miyake Spider Mite Eotetranychus kankitus (Acari: Tetranychidae) at Different Temperatures

“…In many temperature-dependent development studies of arthropods, linear models were used to estimate the lower thermal threshold and thermal constant [ 12 , 32 ]. An insect’s lower thermal threshold and thermal constant are indicators that can be used to forecast its potential distribution and abundance [ 3 , 6 , 7 , 33 , 34 ]. Several equations have been developed to describe the relationship between development rate and temperature.…”

“…Temperature is one of the most dominant abiotic factors that positively or negatively affects the development and reproduction of poikilothermic arthropods. Temperature affects vital population processes such as development rate, birth rate, death rate, fecundity and generation time, and as a result drives population growth traits of target species [ 3 , 4 , 5 , 6 , 7 ]. Additionally, thermodynamic effects have been observed on biochemical processes and temperature determines physiological functions, which underlie development, fitness, and performance [ 8 ].…”

Effect of relative humidity on the efficacy of entomopathogen Beauveria bassiana-based mycopesticide against red spider mite Tetranychus macfarlanei

“…Because of its' phytophagous nature, it infests a wide range of economically important crops belonging to the families Malvaceae, Fabaceae, Cucurbitaceae, Convolvulaceae, and Solanaceae (Jeppson et al 1975;Bolland et al 1998). Tetranychus macfarlanei has arrived lately in Bangladesh, but in this short period, it has spread throughout the country, and is threatening many economically important crops, including jute, bean, eggplant, and bottle gourd (Ullah et al 2012(Ullah et al , 2021.…”