- 期刊
- OpenAccess
不同溫度對二種平腹小蜂寄生能力之影響
Effects of temperature on parasitism of two egg parasitoid wasps, Anastatus japonicus and Anastatus dexingensis
摘要
荔枝椿象（Tessaratoma papillosa）為近年危害臺灣無患子科植物之重要外來入侵害蟲，而本土性卵寄生蜂平腹小蜂Anastatus japonicus和Anastatus dexingensis為荔枝椿象卵期常見卵寄生蜂。本研究測試此2種平腹小蜂於不同溫度10、15、20、25、30、35℃下的寄生效果，結果顯示2種平腹小蜂對溫度寄生趨勢相同，於30℃下寄生總數及雌蜂數最多，低溫10、15℃及高溫35℃皆不利寄生；A. japonicus於30℃的環境中，每日平均可寄生15.1±0.3隻、其次為25及20℃的11.4±0.3隻及6.1±0.1隻；A. dexingensis於30及25℃的寄生數最多，為6.2±0.1及5.8±0.2隻。而A. japonicus於30℃雌蜂數最多為10.6±0.40隻，A. dexingensis產下的雌蜂數則以30及25℃的條件下最多，分別為5.5±0.1隻及5.2±0.2隻，試驗結果A. japonicus可產生的寄生總數或後代雌蜂數皆較A. dexingensis多。而在高溫或低溫時皆會使此2種小蜂雌雄比降低，產生較多的雄性後代。
並列摘要
The litchi stink bug Tessaratoma papillosa is an invasive insect pest that destroys Sapindaceae plants in recent years. In Taiwan, Anastatus japonicus and Anastatus dexingensis are common native egg parasitoids of the litchi stink bug. In this study, we tested the parasitism effects of these two egg parasitoids under different temperatures ( 10, 15, 20, 25, 30, 35 ℃ ). Result showed that the parasitism trends of the two species under different temperatures were the same: The total number of progenies and female wasps were the highest at 30℃ , and no parasitism was unfavored at low temperatures (10, 15℃ ) and high temperature (35 ℃ ). The mean number of progenies per day of A. japonicus was 15.1 ± 0.3 in a 30℃ environment, followed by 11.4 ± 0.3 (25℃ ) and 6.1 ± 0.1 (20℃ ). The number of progenies per day for A. dexingensis was the highest at 30 and 25℃ , which were 6.2 ± 0.1 and 5.8 ± 0.2, respectively. The number of female progenies was the highest at 30 ℃ for A. japonicus , which was 10.6 ± 0.40, while the number of female progenies was the highest at 30 and 25℃ for A. dexingensis, which were 5.5 ± 0.1 and 5.2 ± 0.2, respectively. The total number of progeny and female wasps of A. japonicus were higher than that of A. dexingensis . Progeny sex ratio (♀/♀+♂) in these two wasps were decreased when they were under high or low temperatures, resulting in more male progeny.