伊托米蝶亚科蝴蝶中成年拟态与幼虫寄主植物之间的相关性。
Correlations between adult mimicry and larval host plants in ithomiine butterflies.
作者信息
Willmott Keith R, Mallet James
机构信息
Department of Entomology, The Natural History Museum, London SW7 5BD, UK.
出版信息
Proc Biol Sci. 2004 Aug 7;271 Suppl 5(Suppl 5):S266-9. doi: 10.1098/rsbl.2004.0184.
The apparent paradox of multiple coexisting wing pattern mimicry 'rings' in tropical butterflies has been explained as a result of microhabitat partitioning in adults. However, very few studies have tested this hypothesis. In neotropical forests, ithomiine butterflies dominate and display the richest diversity of mimicry rings. We show that co-mimetic species occupy the same larval host-plant species significantly more often than expected in two out of five communities that we surveyed; in one of these, the effect remains significant after phylogenetic correction. This relationship is most probably a result of a third correlated variable, such as microhabitat. Host-plant microhabitat may constrain adult movement, or host-plant choice may depend on butterfly microhabitat preferences and mimicry associations. This link between mimicry and host plant could help explain some host-plant and mimicry shifts, which have been important in the radiation of this speciose tropical group.
热带蝴蝶中多种共存的翅型拟态“环”这一明显的悖论，已被解释为成虫微生境划分的结果。然而，很少有研究验证这一假说。在新热带森林中，伊托米蝶类占主导地位，且展示出最丰富多样的拟态环。我们发现，在我们调查的五个群落中的两个群落里，共拟态物种占据相同幼虫寄主植物物种的频率显著高于预期；在其中一个群落中，经过系统发育校正后，这种效应仍然显著。这种关系很可能是第三个相关变量的结果，比如微生境。寄主植物微生境可能会限制成虫的活动，或者寄主植物的选择可能取决于蝴蝶的微生境偏好和拟态关联。拟态与寄主植物之间的这种联系，有助于解释一些寄主植物和拟态的转变，这些转变在这个物种丰富的热带类群的辐射演化中具有重要意义。
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