UV reflectance is associated with environmental conditions in Palaearctic Pieris napi (Lepidoptera: Pieridae)

• 来源期刊: 中国昆虫科学（英文版）
• 关键词: geographical variation green-veined white Palaearctic UV photography UV reflectance
• 年，卷（期）: 2018,（3）
• 页码范围: 508-518
• 页数: 11页
• 语种: 英文
• DOI: 10.1111/1744-7917.12429

摘要

The subject of our investigation was the visual features of wing color with special focus on the UV reflectance in the green-veined white butterfly (Pieris napi).Previous studies had concluded that UV reflectance on dorsal wing surfaces is found only in the female P.napi.Based on UV sensitive photography,we analyzed a correlation between 12 geographic and environmental factors and UV reflectance patterns on 3 patches on the forewings of 407 P napi specimens from the Palaearctic region.Results had shown that females significantly differ from males:they exhibit a 25％ higher UV reflectance.To investigate whether and how UV reflectance levels on the forewings and hindwings of both sexes are influenced by the environment,we performed a principal component analysis (PCA) with several environmental variables.For several variables (in particular,latitude and longitude,mean annual temperature and precipitation,and temperature annual range and altitude),the generalized linear model (GLM) model revealed a significant correlation in both sexes.This suggests a link between UV reflectance levels and the environment and distribution of P.napi.We found that stronger UV reflectance is associated with generally more hostile environments and concluded that large-scale environmental factors influence the UV reflectance on the forewings of both male and female green-veined white butterflies.