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AGE OF Insect - Europe PMC

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Last Updated: 16 January 2022

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Investigation of Developmental Stage/Age, Gamma Irradiation Dose, and Temperature in Sterilization of Male Aedes aegypti (Diptera: Culicidae) in a Sterile Insect Technique Program.

Aedes aegypti can be controlled by a program using a sterile insect method. Unfortunately, there is no such effective standard for sterilizing mosquitoes that can achieve a high degree of sterility while still retaining mating ability and longevity. Weradiators doses of 0, 20, 40, 60, 80, and 100 Gray were irradiated on a Gamma-cell 220 irradiator kit for adults aged 1 d and 3 d, as well as adults aged 1 d and 3 d. In the puppy and adult stage of 1 d were irradiated at a dose of 70 Gy at various temperatures, the aegypti was irradiated at a dose of 70 Gy at various temperatures. This research found that an irradiation dose of 70 Gy in the pupal stage caused a high degree of sterility, while still maintaining mating competitiveness and longevity.

Source link: https://europepmc.org/article/MED/34595516


Age-specific fecundity under pathogenic threat in an insect: Terminal investment versus reproductive restraint.

Both of these hypotheses were tested in females of the yellow mealworm beetle, Tenebrio molitor, an iteroparous insect with reproductive habits similar to those of long-lived organisms. We measured female age-specific fecundity, survival, body mass, and immunity in order to achieve this. Females exposed either early or late-life immunity, however, did not have reduced survival or improved reproductive success, despite being inconsistent with a terminal investment. Our findings reveal that age-specific reproduction of T. molitor females under pathogenic risk is inconsistent with a terminal investment. Our results, on the other hand, suggest that females maintained their innate vigor and, in turn, future reproductive chances.

Source link: https://europepmc.org/article/MED/34626485

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions