Effects of different foods on the color of pupa and elytra of Harmonia axyridis
The purpose of this study was to explore the effects of two different foods(artificial diet and pea aphid)on the melanization levels of pupae and adults in the melanistic mutant and the wild type of Harmonia axyridis.In addition,we sought to clarify the differences between these two phenotypes.The content of carotenoid in the elytra was also measured.The results showed that the melanistic mutant,feeding on either artificial diet or pea aphid,exhibited a similar number of black spots on the back of pupae,but the total melanization level was higher in the artificial diet treatment.In contrast,the wild type showed significantly more black spots and a higher melanization level in response to the artificial diet compared to the pea aphid treatment.In female adults,feeding on an artificial diet significantly increased the number of elytra black spots and the total melanization level in both the melanistic mutant and wild type.In males,food types also significantly affected the number of elytra black spots but didn't affect the total melanization level of mutant type.As for carotenoid contents in the elytra,its in both the melanistic mutant and wild type fed with an artificial diet were significantly lower than those feeding on pea aphid.When fed with pea aphids,the carotenoid content in female melanistic mutant was significantly higher than that in the wild type.These results indicated that melanistic mutant had a different pigmentation response to changes in diet compared to the wild type,laying a solid foundation for further elucidating the pigmentation mechanisms in H.axyridis.
Harmonia axyridismelanistic typenumber of black spotsblack areacarotenoid
NETL
NSTL
万方数据
