Continuous video capture, and pollinia tracking, in Platanthera (Orchidaceae) reveal new insect visitors and potential pollinators

PeerJ

article

Genevieve E. van der Voort¹  Scott R. Gilmore³  Jamieson C. Gorrell²  Jasmine K. Janes¹ 

[1] Department of Ecosystem Science and Management, University of Northern British Columbia, Prince George;Biology, Vancouver Island University;Unaffiliated;Species Survival Commission, Orchid Specialist Group

关键词: Pollination;    Raspberry Pi;    Hybridization;    Lepidoptera;    Hymenoptera;    Cameras;    Biodiversity;   

DOI  :  10.7717/peerj.13191

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Orchids often have specific pollinators, which should provide reproductive isolation, yet many produce natural hybrids. Platanthera dilatata and P. stricta differ in floral morphology but often co-occur, overlap in flowering, and are reputed parents of P. xestesii. We used motion-triggered video detection units to monitor floral visitors of P. dilatata and P. stricta on Vancouver Island, Canada. Pollinia removal in P. dilatata was observed using histochemical staining, and cross-pollinations were performed to determine compatibility. From 1,152 h, 753 videos were recorded; 655 contained insects and 91 contained arachnids. Bumblebees, butterflies, and moths removed pollinia from P. dilatata. No pollinia removal was observed from P. stricta. Five videos showed insects moving between Platanthera species. Pollinia removal rates were low. Hand-pollinations resulted in capsule development and seed production. This study adds to the known diversity of insects interacting with these orchids, and highlights regional differences in floral visitors.

【 授权许可】

CC BY