Flowering patterns of limestone ginger species (Zingiberaceae family) and pollination biology of two of the species
摘要
The interaction between flowering patterns and insect visitation is essential to plant ecology. Exploring the detailed flowering phenology of ginger plants is important for understanding their reproductive strategies, a subject currently underrepresented in the literature. Consequently, this study aims to establish a phenology calendar for limestone ginger species and to comprehensively identify the floral visitors associated with two distinct ginger species during their respective flowering periods. Field observations were conducted at two limestone areas (Gua Ikan and Gua Setir) to identify the flowering pattern of 16 ginger species for a year and floral visitors of Globba leucantha and Zingiber spectabile. In this study, we documented the first reported instance of asynchronous flowering pattern in 16 ginger species within the unique limestone ecosystem, presented in a calendar format. This study revealed that the floral visitors of selected ginger species with different flowering phenology vary and feature a single pollinator. Globba leucantha is pollinated by the small carpenter bee Ceratina ridleyi, while, for the first time, Z. spectabile is observed to be pollinated by the hoverfly Graptomyza longirostris. In fact, the pollinators rely exclusively on the food provided by ginger species during their specific flowering period. This study adds valuable insights to the growing understanding of ginger-pollinator interaction, highlighting the importance of flowering patterns in shaping this relationship.