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Effects of leaf quality and microhabitat on the survival of a leaf-rolling weevil (Attelabidae)

Content Provider	Springer Nature Link
Author	Kobayashi, Chisato Kato, Makoto
Copyright Year	2006
Abstract	Female Cycnotrachelus roelofsi (Coleoptera: Attelabidae) construct two types of leaf roll, i.e., cut-off cradles (CCs) and suspended cradles (SCs), in which to lay eggs; these cradles are generally constructed using older and younger leaves, respectively. We conducted two experiments to determine whether the quality of cradle leaves affects egg and larval survival. In the first experiment, we severed all SCs from a tree and placed them on the ground with unmanipulated CCs in the early breeding season. In the second experiment, we resuspended all CCs in a tree with unmanipulated SCs in the late breeding season. We also compared leaf mass per area (LMA), polyphenol content, and nitrogen content between the two cradle types to determine whether there were any differences in leaf quality. Larval mortality, probably caused by cradle herbivory, was significantly greater in severed SCs than in intact CCs in the early season, suggesting that leaf quality had a profound effect on larval mortality in the terrestrial microhabitat. In contrast, larval mortality did not differ between resuspended CCs and intact SCs in the late season, suggesting that leaf quality had little effect on larval mortality in the arboreal microhabitat. LMA was higher in CCs than in SCs, but there were no differences in the nitrogen and polyphenol contents. These results suggest that cradles constructed using mature, tough leaves were more effective against terrestrial cradle herbivores than those constructed using new, soft leaves.
Starting Page	150
Ending Page	155
Page Count	6
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	22
Issue Number	1
e-ISSN	14401703
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-07-22
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arboreal or terrestrial microhabitats Attelabidae Leaf quality Leaf toughness Seasonal change Forestry Behavioural Sciences Evolutionary Biology Zoology Plant Sciences Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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