中文摘要：

为探讨丽斗蟋Velarifictorus ornatus翅二型个体飞行与生殖发育间生理权衡的内分泌控制机理， 本研究调查了外用保幼激素Ⅲ（JH-III）与早熟素Ⅰ（P-I）对丽斗蟋翅二型个体飞行肌与生殖发育的影响。结果表明： 成虫羽化后当日分别注射1, 5, 10和25 μg保幼激素7 d后， 显著促进了丽斗蟋长翅雌虫卵巢发育， 卵巢重量分别从对照组的16.8±11.4 mg/♀增加到43.9±10.7, 33.6±14.0, 56.8±7.6和 39.3±30.7 mg/♀； 但对卵巢内怀卵量无显著影响。相反， 外用保幼激素则诱发飞行肌降解， 1, 5和10 μg JH-III处理组飞行肌重量分别下降为12.9±4.7, 11.7±4.8和8.8±0.8 mg/♀， 显著低于对照组飞行肌重量（17.7±1.6 mg）。对短翅雌虫注射P-I时， 当注射的剂量超过50 μg/♀时， 能够显著抑制卵巢发育， 而低于50 μg/♀时则对卵巢发育无明显影响。外用JH-III对丽斗蟋长翅雄虫飞行肌、 精巢、 附腺的发育无明显影响； 外用P-I对短翅型雄虫精巢与附腺的发育也无明显影响。因此， 丽斗蟋翅二型雌虫与雄虫的飞行肌与生殖器官的内分泌控制机理可能存在差异。

英文摘要：

In order to understand the endocrine control mechanism of physiological trade-offs between flight muscle and reproductive development, the effects of application of juvenile hormone III （JH-III） and precocene I （P-I） on flight muscles and reproductive development were examined in the wingdimorphic cricket Velarifictorus ornatus. The results indicated that at 7 d after the JH-III and P-I were injected into the test adults on the day of their emergence, the application of juvenile hormone promoted ovarian development in long-winged female V. ornatus. The weight of ovaries of crickets injected with 1, 5, 10 and 25 μg JH-III were 43.9±10.7, 33.6±14.0, 56.8±7.6 and 39.3±30.7 mg/♀, respectively, which were significantly heavier than that of the control group. The application of juvenile hormone stimulated ovarian development but did not affect the number of eggs in the ovary of longwinged females significantly. On the contrary, the application of JH-III stimulated the degradation of flight muscles. The weight of flight muscles of crickets treated with 1, 5 and 10 μg JH-III decreased to 12.9±4.7, 11.7±4.8 and 8.8±0.8 mg/♀, respectively, which was lighter than that of the control group. Injection of P-I restrained the ovarian development of short-winged female V. ornatus when the dosage was over 50 μg, but had no effect when the dosage was lower. There was no difference in the development of the testes, accessory glands, and flight muscles of long-winged males injected with acetone and juvenile hormone. Injection of P-I did not influence the development of the testes, accessory glands, and flight muscles of the short-winged males. Therefore, hormonal control of flight muscles and reproductive organ development appears to differ between female and male wing dimorphic crickets.