Ben Hamouda Amel, Ammar Mohamed, Ben Hamouda Mohamed Habib, Bouain Abderrahmen
Sfax, Department of Life Sciences, Tunisia.
J Insect Physiol. 2009 Jul;55(7):617-23. doi: 10.1016/j.jinsphys.2009.03.008. Epub 2009 Apr 3.
Coloration phase state, morphometrical ratios and the numbers of mature oocytes of Locusta migratoria migratoria were examined in a series of experiments to determine the means by which phase characteristics are passed to the next generation. Washing with distilled water of eggs from egg pods laid by gregarious crowd-reared females resulted in solitarization of the hatchlings after their isolation, indicating that a factor present in eggs encapsulated in foam is causal to gregarization. Such locusts showed a significant shift towards the typical solitarious body coloration, morphometry and number of mature oocytes as compared to locusts resulting from unwashed eggs. Gregarious coloration, morphometrical ratios and oocyte numbers could be partially restored when hatchlings from washed eggs were regrouped. When gregarious locusts were reared in isolation, they showed a solitary body color, whereas, morphometry and oocyte numbers were not affected by isolation.
在一系列实验中，对飞蝗东亚飞蝗的体色阶段状态、形态测量比例和成熟卵母细胞数量进行了检查，以确定阶段特征传递给下一代的方式。用蒸馏水冲洗群居群养雌性所产卵荚中的卵，孵化后的若虫在隔离后出现散居化，这表明包裹在泡沫中的卵中存在的一种因素是群居化的原因。与未冲洗卵孵化出的蝗虫相比，这些蝗虫在典型散居体色、形态测量和成熟卵母细胞数量方面有显著转变。当冲洗过的卵孵化出的若虫重新聚集时，群居体色、形态测量比例和卵母细胞数量可以部分恢复。当群居蝗虫单独饲养时，它们表现出散居体色，而形态测量和卵母细胞数量不受隔离影响。
