期刊
ANIMAL BEHAVIOUR
卷 84, 期 4, 页码 995-1000出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anbehav.2012.07.025
关键词
amino acid; Coenonympha pamphilus; Festuca rubra; larval feeding; Lepidoptera; nectar; preference; Satyrinae; silica
资金
- Freiwillige Akademische Gesellschaft Basel, Basler Stiftung fur biologische Forschung and Stiftung Emilia Guggenheim-Schnurr
- Fonds zur Forderung des akademischen Nachwuchses der Universitat Basel [65051]
Nitrogen is a key nutrient for fitness in insects, but host plant defence can deter herbivores from acquiring it. Therefore, coping with host plant defence is a predominant issue for herbivores. Butterflies have the ability to compensate for a nitrogen-poor diet both as herbivorous larvae and as nectar-feeding adults. We examined whether silica (S), the main antiherbivore defence in grasses (in both fertilized nitrogen-rich (F+) and nitrogen-poor (F-) Festuca rubra host plants) affects larval development and accordingly adult feeding behaviour in the small heath butterfly, Coenonympha pamphilus. High silica levels in nitrogen-poor host plants (F-/S+) negatively affected larval performance, and, as a consequence, female and even male butterflies preferred to consume amino acid-rich nectar. Our findings show for the first time that plant defence in larval host plants affects feeding behaviour in adult butterflies, and that even male butterflies, which have so far been thought to be indifferent to nectar amino acids, preferred to consume amino acid-rich nectar. Hence larval food quality can influence plant-pollinator dynamics. (C) 2012 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.
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