Silva M C, Lomônaco C, Augusto S C, Kerr W E
Programa de Pós-Gradução em Genética e Bioquímica, Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Uberlândia, MG, Brasil.
Genet Mol Res. 2009;8(2):730-7. doi: 10.4238/vol8-2kerr037.
We examined the influence of climate and man on size and fluctuating asymmetry in two species of Euglossine bees collected from a semideciduous forest reserve. Sixty males of each species were collected; four measurements were made of their wings to obtain a multivariable size index and a fluctuating asymmetry index. No significant differences in the size of Eulaema nigrita Lepeletier were found between the areas and seasons. Larger males of Euglossa pleosticta Dressler were collected during the hot and wet season; however, male size did not vary with location. Higher rainfall and a consequent increase in food availability could have influenced the increase in size of E. pleosticta. Bees collected during the hot and wet season at the forest border were more asymmetric than bees collected during the cold and dry season; the latter were found inside the forest. This indicates that climate and anthropic interferences influence the stability of development of E. pleosticta. Consequently, this species could be used as a bioindicator of stress. Apparently, E. nigrita is more resistant to environmental interference.
我们研究了气候和人类活动对从半落叶森林保护区采集的两种尤加利蜜蜂的体型大小和波动不对称性的影响。每种蜜蜂采集了60只雄性样本；对其翅膀进行了四项测量，以获得一个多变量体型指数和一个波动不对称指数。在不同区域和季节之间，未发现黑大蜜蜂（Eulaema nigrita Lepeletier）的体型大小存在显著差异。多色尤加利蜜蜂（Euglossa pleosticta Dressler）体型较大的雄性样本是在炎热潮湿季节采集到的；然而，雄性蜜蜂的体型大小并未随地点的不同而变化。更高的降雨量以及随之而来的食物供应量增加，可能影响了多色尤加利蜜蜂体型的增大。在森林边缘炎热潮湿季节采集到的蜜蜂比在森林内部寒冷干燥季节采集到的蜜蜂更不对称；后者是在森林内部发现的。这表明气候和人为干扰会影响多色尤加利蜜蜂发育的稳定性。因此，该物种可作为应激的生物指标。显然，黑大蜜蜂对环境干扰更具抵抗力。
