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Accueil du site → Doctorat → Australie → 2020 → The critical role of birds as pollinators of the Red and Green Kangaroo Paw, Anigozanthos manglesii

University of Western Australia (2020)

The critical role of birds as pollinators of the Red and Green Kangaroo Paw, Anigozanthos manglesii

Ayre Bronwyn

Titre : The critical role of birds as pollinators of the Red and Green Kangaroo Paw, Anigozanthos manglesii

Auteur : Ayre Bronwyn

Université de soutenance : University of Western Australia

Grade : Doctor of Philosophy (PhD) 2020

Résumé
Pollination by nectar-feeding birds is critical for the kangaroo paw Anigozanthos manglesii. Although the introduced European Honeybee, Apis mellifera, is the most common flower visitor, experimentally excluding nectar-feeding birds results in 81% fewer seeds, 67% fewer fruits, lower allelic diversity and lower levels of multiple paternity. Hand pollination experiments identified the presence of a near-neighbour optimal outcrossing distance, with seed set highest between near-neighbours and paternal success decreasing with increasing distance between plants. These results highlight that pollination by nectar-feeding birds can have unique genetic consequences, and that the introduced honeybee may negatively impact the pollination of some native plants.

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Page publiée le 24 janvier 2021