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首页> 外文期刊>Zoological Science >Overlapping distribution of two groups of the butterfly Eurema hecabediffering in the expression of seasonal morphs on Okinawa-jima island
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Overlapping distribution of two groups of the butterfly Eurema hecabediffering in the expression of seasonal morphs on Okinawa-jima island

机译：冲绳岛岛上季节性变态表达中两组欧洲蝴蝶的重叠分布有所不同

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摘要

In Japan, Eurema hecabe (L.) has two geographically separated groups (subtropical and temperate) differing not only in the color pattern expression of the wings associated with ovarian arrest, but also in the fringe color of the wings and host-plant utilization. In a field survey (Kato, 1999), it was found that individuals with different fringe color of the forewing (brown or yellow type) inhabit Okinawa-jima Island located in north of the subtropical region, and that fringe-color is linked with seasonal morph expression. In the present study, rearing experiments were done to investigate whether these sympatric individuals are different forms within one species or belong to different species. The results show that each population of brown- and yellow-types maintained its own seasonal morph response to photoperiod and temperature through three generations. Host-plant utilization by the larvae and the fringe-color also differed between them and was maintained. These findings strongly suggest that E. hecabe of Okinawa-jima Island is divided into two distinct populations, and that one belongs to the temperate and the other to the subtropical group.
机译：在日本，Eurema hecabe（L.）有两个地理上分开的组（亚热带和温带），不仅在与卵巢停滞有关的翅膀的颜色图案表达上不同，而且在翅膀的边缘颜色和寄主植物的利用上也不同。在野外调查（加藤，1999年）中，发现亚热带北部的冲绳岛岛上居住着前缘（棕色或黄色型）不同边缘颜色的个体，并且边缘颜色与季节性相关。变形表达。在本研究中，进行了饲养实验以调查这些同胞个体在一个物种内是不同形式还是属于不同物种。结果表明，每个棕色和黄色类型的种群在三代时间内都对光周期和温度保持了自己的季节性变化响应。幼虫和条纹颜色对寄主植物的利用也有所不同，并得以维持。这些发现有力地表明，冲绳岛岛的大肠埃希菌被分为两个不同的种群，一个种群属于温带种群，另一个种群属于亚热带种群。

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