Nectar Usage in a Southern Arizona Hawkmoth Community

Authors: Alarcon Jr, Ruben; DAVIDOWITZ, GOGGY - UNIVERSITY OF ARIZONA; BRONSTEIN, JUDITH - UNIVERSITY OF ARIZONA

Submitted to: Ecological Entomology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/14/2008
Publication Date: 7/20/2008
Citation: Alarcon, R., Davidowitz, G., Bronstein, J.L. 2008. Nectar usage in a southern Arizona hawkmoth community. Ecological Entomology 33:503-509.

Interpretive Summary: The diversity of plants used for nectar by hawkmoths is poorly understood. In this study we examined the nectar use by a community of hawkmoths in a southern Arizona grassland by removing and identifying the pollen carried by moths attracted to collecting lights. Over a two year period we recorded 749 moths from 14 species. Most hawkmoths carried large amounts of pollen from two species Datura wrightii (Solanaceae) pollen, which is a classic hawkmoth-pollinated plant; the other, Agave palmeri (Agavaceae), which is a bat-adapted plant. The dominance of Agave suggests that it might be supporting hawkmoth populations for Datura wrightii and other hawkmoth-adapted plants in the community.

Technical Abstract: The diversity of plants used for nectar by hawkmoths is poorly understood. In this study we examined the nectar use by a community of hawkmoths in a southern Arizona grassland by removing and identifying the pollen carried by moths attracted to collecting lights. Over a 2 year period we recorded 749 moths from 14 species. Most hawkmoths carried large amounts of pollen from two species Datura wrightii (Solanaceae) pollen, which is a classic hawkmoth-pollinated plant; the other, Agave palmeri (Agavaceae), which is a bat-adapted plant. The dominance of Agave suggests that it might be supporting hawkmoth populations for Datura wrightii and other hawkmoth-adapted plants in the community.