caa a22 4500 386375062 CHVBK 20180307112015.0 cr unu---uuuuu 161130e198902 xx s 000 0 eng 10.1017/S1742758400003313 doi S1742758400003313 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400003313 Abdel-Salam Kamelia Aly Atomic Energy Authority, NRC, Radiobiology Department, Abo-Zaabal 13759, Egypt Gamma irradiation effects on mating competitiveness of Tribolium castaneum (Herbst) [Elektronische Daten] [Kamelia Aly Abdel-Salam] When males of Tribolium castaneum (Herbst) substerilized with 35, 40 or 50 Gy of gamma irradiation (I) were added to untreated (U) pairs of adults at I : U ratios of 1:1, 2:1 and 5:1, the percentage of hatched eggs was increased by increasing the dose administered to males, as not expected, at equal flooding ratio. The calculated degree of competitiveness showed that males irradiated with the lowest dose (35Gy) were more competitive than males irradiated with the highest dose (50 Gy). However, increasing the ratio of irradiated males with 50 Gy to 10 or 20 increased, accordingly, the competitiveness value. The results also indicate that if an equal number of irradiated males and females with 50 Gy, which had given 99.16 % sterility, were placed with untreated pairs of adults at different ratios (1:1, 5:1, 10:1, and 20:1), the effectiveness was more promising. Moreover, the data further suggest that the effectiveness was enhanced when the ratio of irradiated males and females was increased. Thus, the presence of sterile females along with sterile males in the stored products appears to dilute the effectiveness of normal males, which otherwise would mate with normal females. Copyright © ICIPE 1989 Gamma radiation nationallicence rust-red flour beetle nationallicence Tribolium castaneum nationallicence mating competitiveness nationallicence stored product insects nationallicence International Journal of Tropical Insect Science Cambridge University Press 10/1(1989-02), 35-42 1742-7584 10:1<35 1989 10 JTI https://doi.org/10.1017/S1742758400003313 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400003313 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Abdel-Salam Kamelia Aly Atomic Energy Authority, NRC, Radiobiology Department, Abo-Zaabal 13759, Egypt NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 10/1(1989-02), 35-42 1742-7584 10:1<35 1989 10 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge