Effect of temperature on reproductive parameters and longevity of Tyrophagus putrescentiae (Acari: Acaridae)

Abstract

The effect of temperature on reproductive parameters and longevity of the mold mite, Tyrophagus putrescentiae (Schrank) was examined at seven constant temperatures, ranging from 10 to 34 degrees C, and a relative humidity of 90 +/- 5%. Preoviposition period and fecundity were adversely affected by extreme temperatures and the oviposition period increased as temperature was reduced. Different patterns were observed for longevity data for males and females, with greater longevities for males at intermediate temperatures and more similar values for both sexes at extreme temperatures. Polynomial and non-linear models provided a good fit of the relationship of reproductive and longevity parameters with temperature. The effect of temperature on the intrinsic rate of increase of T. putrescentiae populations was established by the non-linear Lactin model. The optimum temperature for development was obtained at 30 degrees C. At this temperature, the population doubling time is 1.75 days. The lower and upper thresholds for T. putrescentiae populations were established at 10.4 and 34.8 degrees C, respectively. Altogether, these data provide basic information to develop sound physical control strategies of the mold mite.

Reproduction, survival, and life table parameters of the predatory mite Cheyletus malaccensis (Acari: Cheyletidae) at various constant temperatures

“…According to our results, intrinsic rate of population increase (r m ) of C. malaccensis was strongly affected by temperature, increasing gradually from 17.5°C to a maximum at 32.5°C. The intrinsic rate of increase (r m ) found for C. malaccensis at 32.5°C and 35°C (r m = 0.213 and r m = 0.148, respectively), was close to the values obtained by Sanchez-Ramos and Castanera (2005) for the prey T. putrescentiae at the temperature of 32.5°C and 34°C (r m = 0.298 and r m = 0.145, respectively). However, Sanchez-Ramos and Castanera (2005) performed their experiments at 90 ± 5% r.h. instead of 80 ± 5% r.h. used in the present work.…”

“…The intrinsic rate of increase (r m ) found for C. malaccensis at 32.5°C and 35°C (r m = 0.213 and r m = 0.148, respectively), was close to the values obtained by Sanchez-Ramos and Castanera (2005) for the prey T. putrescentiae at the temperature of 32.5°C and 34°C (r m = 0.298 and r m = 0.145, respectively). However, Sanchez-Ramos and Castanera (2005) performed their experiments at 90 ± 5% r.h. instead of 80 ± 5% r.h. used in the present work. The similarity of the intrinsic rate of increase (r m ) of C. malaccensis and T. putrescentiae suggests that C. malaccensis populations can restrain increases in T. putrescentiae populations at these temperatures.…”

Reproduction, longevity and life table parameters of Tyrophagus neiswanderi (Acari: Acaridae) at constant temperatures

“…At 31°C no differences were observed, something that could be related to the markedly low fecundity observed at this temperature (&66 eggs) compared to the other temperatures studied (more than 250 eggs). However, in the case of T. putrescentiae, a similar fecundity was observed at 34°C (&68 eggs) and the mortality rate of males showed greater values of the shape parameter compared to females (Sánchez-Ramos and Castañera 2005).…”

Notice of Retraction: Application of Inter Simple Sequence Repeat (ISSR) to Detect Genetic Diversity of Tyrophagus putrescentiae (Schrank) (Acari: Acaridae)

“…T. putrescentiae also acts as a carrier of bacteria and toxigenic fungi [16]. There were many literature on T. putrescentiae, however, few focused on its molecular biology [17,18]. The genetic structure and genetic diversity of T. putrescentiae needs further investigation.…”