Relationships between pollen transfer and body size of pollinators
Pearson correlation analysis showed that there were significant positive correlations between the body length of five pollinator species and pollen removal, pollen deposition, and pollination efficiency (P< 0.05) (Table 2), suggesting that the body length increased the amount of transferred pollen. When the moth species was excluded, the intertegular distance of four bee species was significantly and positively correlated to pollen removal and pollen deposition (P < 0.05) (Table 2), suggesting that the larger bees tended to remove more pollen from anthers and deposit more pollen on stigmas. However, there was no correlation between the intertegular distance and pollination efficiency (Table 2).