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首页> 外文期刊>American Journal of Plant Sciences >Geographic Variation in Flower Size and Flower-Visitor Composition of Two Bumblebee-Pollinated, Spring-Flowering Herbs, Lamium album L. var. barbatum (Lamiaceae) and Meehania urticifolia (Lamiaceae)
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Geographic Variation in Flower Size and Flower-Visitor Composition of Two Bumblebee-Pollinated, Spring-Flowering Herbs, Lamium album L. var. barbatum (Lamiaceae) and Meehania urticifolia (Lamiaceae)

机译：两种大黄蜂授粉的春天开花药草的花大小和来访者组成的地理变异，Lamium album L. var。巴贝（Lamiaceae）和Meehania urticifolia（Lamiaceae）

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Geographic variation of flower size is potentially affected by various biotic and abiotic factors such as pollinator size, abundance of nectar robbers, and temperature. To elucidate the effect of geographic variation of flower-visitor fauna on flower size, we investigated two spring-flowering, bumblebee-pollinated herbs, Lamium album L. var. barbatum (seven populations) and Meehania urticifolia (five populations), in central Japan. Flower-size variations were not correlated with altitude (an index of abiotic environmental change) in either species, but in both species they were related to the local species composition of flower visitors. In L. album, flowers were bigger in populations visited by long-tongued Bombus consobrinus and B. diversus queens, whereas they were smaller in populations visited by short-tongued bees such as Apis mellifera. Flower size did not vary much among populations of M. urticifolia visited by long-tongued bumblebees, but it was uniquely small in a population whose flowers were predominantly visited by the nectar-robbing bee Megachile japonica. In conclusion, both the size and nectar-robbing behavior of bees affect local flower-size adaptation in these two long-tubed, spring-flowering herbs.
机译：花大小的地理变化可能受到各种生物和非生物因素的影响，例如授粉媒介的大小，花蜜强盗的数量和温度。为了阐明花访者动物区系的地理变异对花的大小的影响，我们调查了两种春天开花的，大黄蜂授粉的草药，Lamium album L. var。日本中部的野营（七个种群）和荨麻叶（五个种群）。在任何一个物种中，花的大小变化都与海拔高度（非生物环境变化指数）无关，但是在两个物种中，它们都与来访者的本地物种组成有关。在L.专辑中，长舌Bombus consobrinus和B.diversus皇后访问的种群中的花朵较大，而短舌蜂（如蜜蜂属）访问的种群中的花朵较小。在长毛大黄蜂拜访的荨麻分支种群中，花的大小变化不大，但在主要由抢花蜜蜂Megachile japonica拜访花朵的种群中，花的大小却很小。总之，蜜蜂的大小和花蜜抢夺行为都会影响这两种长管春季开花草药的局部花朵大小适应性。

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