| Autor: |
Kou, Lixuan, You, Shirong, Liu, Mengke, Li, Yanjiao, Liu, Peisong, Wang, Zhe, Liu, Dandan, Fan, Jianmin, Cheng, Fan |
| Zdroj: |
Zoomorphology; Apr2025, Vol. 144 Issue 1, p1-12, 12p |
| Abstrakt: |
Chrysomela vigintipunctata (Scopoli, 1763) are a major forest pest of willow, spreading across the temperate forest zone of the Palearctic. As one subspecies of Chrysomela vigintipunctata, Chrysomela vigintipunctata alticola Wang is mainly distributed above 3200 m. However, the morphological characteristics and developmental duration of this high altitude leaf beetle are not well examined. In the alpine meadow of the Qinghai-Tibet Plateau, the C. vigintipunctata alticola specializes in feeding on the leaves of willow Salix atopantha during larval and adult stage, causing leaves yellowing and wilting. We investigated the life history, larval morphology, and body size (as indicated by the body length and head capsule width) of different instars of the leaf beetle. Only one generation was observed in one year and the beetles overwintered as the adult form in soil in the alpine meadow. The larvae had three instars, feeding on the underside of the leaves in the first instar in a cluster, and the second and third instar larvae dispersedly can feed on the whole leaves. A protrusible disk in the abdominal end assists in both crawling and attaching to the leaves during pupation. Both the body length and head capsule width increased significantly with instars with an exponential relationship, and the ratio of body length to head width is significantly higher in late stage than initial stage of each instar. The understanding of the larval morphology and life history may contribute to pest management of this high altitude leaf beetle. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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