Temperature influences the effectiveness of the parasitoid "Binodoxys communis"

Study revealed that temperature is a determining factor for the success of the parasitoid Binodoxys communis in the biological control of cotton aphids (Aphis gossypii).

Researchers evaluated the impact of different temperatures and humidity levels on longevity, parasitism rate and parasitoid development.

The results indicated that 25°C is the ideal condition for the efficiency of this biological agent.

temperature and humidity

Binodoxys communis is a parasitoid that controls the population of Aphis gossypii by laying its eggs inside the host, leading to the death of the aphid. The research revealed that moderate temperatures, between 20°C and 25°C, favor the longevity of the parasitoid, its parasitism rate and the survival of the offspring.

In contrast, high temperatures, especially above 30°C, significantly reduced the effectiveness of biological control, shortening the adult life of parasitoids and decreasing their ability to attack aphids.

Relative air humidity also had an influence on the survival of parasitoids. The study showed that humidity of 60% to 80% is more favorable than drier environments, increasing the longevity of adults.

However, humidity alone did not significantly affect the parasitism rate, reinforcing the importance of temperature as a critical factor.

Implications for biological management

The study findings provide information for improving release strategies. B. communis in the biological control of A. gossypii.

Producers using this method should consider local climatic conditions before scheduling parasitoid release.

Regions with temperatures above 30°C may require adjustments to the strategy, such as releasing crops during times of milder temperatures or adopting techniques to moderate the temperature in the cultivation environment.

More information can be found at doi.org/10.3390/insects16030264