Life history responses of the cabbage beetle Colaphellus bowringi to temperature change
文献类型: 外文期刊
第一作者: He, Hai-Min
作者: He, Hai-Min;Fu, Shu;Xue, Fang-Sen;Geng, Ting
作者机构:
关键词: body weight;Colaphellus bowringi;development time;growth rate;sexual size dimorphism;temperature
期刊名称:ENTOMOLOGICAL RESEARCH ( 影响因子:1.306; 五年影响因子:1.242 )
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年卷期:
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收录情况: SCI
摘要: Temperature is considered one of the most important mediators of phenotypic plasticity in ectotherms. Here, we investigated life history traits of the cabbage beetle, Colaphellus bowringi Baly (Coleoptera: Chrysomelidae), at a wide range of temperatures (16, 19, 22, 24, 26 and 28 degrees C). The larval and pupal times were significantly decreased with increasing rearing temperature and growth rate was positively correlated with temperature. However, the relationship between body size and rearing temperature in C. bowringi did not follow the temperature-size rule; both males and females reached the highest body weight at 19 degrees C. Females were significantly larger than males at all temperatures. Male pupae lost significantly more weight at metamorphosis compared to females. However, diapausing males gained significantly higher weight after feeding compared to diapausing females at higher temperatures of 22, 24, 26 and 28 degrees C. Body weight tended to decrease with increasing rearing temperature, whereas sexual size dimorphism (SSD) tended to increase with increasing rearing temperature; thus, Rensch's rule is upheld. The degree to which SSD changed with temperature varied with different development stages. SSD was lowest in pupae, highest in newly emerged adults and intermediate in diapausing adults.
分类号: Q96
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