Crocidolomia pavonana larval foraging: behavior and feeding site preferences on cabbage, Brassica oleracea

Takeuchi, H, Zalucki, MP and Furlong, MJ (2009) Crocidolomia pavonana larval foraging: behavior and feeding site preferences on cabbage, Brassica oleracea. Entomologia Experimentalis Et Applicata, 133 2: 154-164. doi:10.1111/j.1570-7458.2009.00918.x


Author Takeuchi, H
Zalucki, MP
Furlong, MJ
Title Crocidolomia pavonana larval foraging: behavior and feeding site preferences on cabbage, Brassica oleracea
Formatted title
Crocidolomia pavonana larval foraging: behavior and feeding site preferences on cabbage, Brassica oleracea
Journal name Entomologia Experimentalis Et Applicata   Check publisher's open access policy
ISSN 0013-8703
Publication date 2009-11
Year available 2009
Sub-type Article (original research)
DOI 10.1111/j.1570-7458.2009.00918.x
Volume 133
Issue 2
Start page 154
End page 164
Total pages 11
Editor Dr. S B J Menken
Place of publication United Kingdom
Publisher Wiley-Blackwell Publishing Ltd.
Collection year 2010
Language eng
Subject 960413 Control of Plant Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
060399 Evolutionary Biology not elsewhere classified
C1
Abstract Experiments were conducted to determine feeding site preferences of Crocidolomia pavonana (Fabricius) (Lepidoptera: Crambidae) larvae within cabbage plants, Brassica oleracea L. var. capitata cv. Warrior (Brassicaceae), and to determine whether induced plant responses to herbivory affect the behavior of larvae. In the first experiment, intra-plant damage and larval distribution were recorded to account for the spreading pattern of damage and larval feeding behavior on a plant; larvae initially fed on the base of leaves and moved progressively to the bud, leaf tips were avoided. In the second experiment, larval performance (the duration of the first instar, survival to the second instar, and weight of second instars) was assessed when larvae fed on the bud, the base, and the tip of the youngest fully expanded leaf on a plant. Crocidolomia pavonana larvae performed best when they fed on bud leaf tissue andmost poorly when they fed on leaf tissue at the base of leaves. In the third experiment, expression of induced resistance was tested on each of the three plant parts using a first-instar bioassay. Negative impacts on larval growth and development were not detected when larvae fed on the bud or base tissue when plants were damaged prior to the assay. However, negative effects were detected in larvae feeding on tip leaf tissue when the base of the leaf was damaged prior to the assay or if the bud tissue was damaged simultaneously with the assay. The findings indicate that resource heterogeneity for C. pavonana within-cabbage plants is determined by both the initial quality of food at a location and by subsequent induced changes as a result of larval feeding; both contribute to the feeding pattern observed in these gregarious larvae.
Formatted abstract
Experiments were conducted to determine feeding site preferences of Crocidolomia pavonana (Fabricius)
(Lepidoptera: Crambidae) larvae within cabbage plants, Brassica oleracea L. var. capitata cv.
Warrior (Brassicaceae), and to determine whether induced plant responses to herbivory affect the
behavior of larvae. In the first experiment, intra-plant damage and larval distribution were recorded
to account for the spreading pattern of damage and larval feeding behavior on a plant; larvae initially
fed on the base of leaves and moved progressively to the bud, leaf tips were avoided. In the second
experiment, larval performance (the duration of the first instar, survival to the second instar,
and weight of second instars) was assessed when larvae fed on the bud, the base, and the tip of the
youngest fully expanded leaf on a plant. Crocidolomia pavonana larvae performed best when they fed
on bud leaf tissue andmost poorly when they fed on leaf tissue at the base of leaves. In the third experiment,
expression of induced resistance was tested on each of the three plant parts using a first-instar
bioassay. Negative impacts on larval growth and development were not detected when larvae fed on
the bud or base tissue when plants were damaged prior to the assay. However, negative effects were
detected in larvae feeding on tip leaf tissue when the base of the leaf was damaged prior to the assay or
if the bud tissue was damaged simultaneously with the assay. The findings indicate that resource
heterogeneity for C. pavonana within-cabbage plants is determined by both the initial quality of
food at a location and by subsequent induced changes as a result of larval feeding; both contribute to
the feeding pattern observed in these gregarious larvae.
Keyword induced response
first-instar assays
Lepidoptera
Crambidae
Brassicaceae
induced resistance
resource heterogeneity
performance
distribution
TRICHOPLUSIA-NI LEPIDOPTERA
WITHIN-PLANT VARIATION
LEAF-AGE
SPECIALIST HERBIVORE
PLAGIODERA-VERSICOLORA
VASCULAR ARCHITECTURE
DEVELOPMENTAL-STAGES
PLUTELLA-XYLOSTELLA
INDUCED RESISTANCE
INDUCED RESPONSES
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
Ecology Centre Publications
 
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Created: Wed, 10 Mar 2010, 15:24:40 EST by Hayley Ware on behalf of School of Biological Sciences