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Common pheromone use among host-associated populations of the browntail moth, euproctis chrysorrhoea, displaying different adult phenologies

Frago, Enric ; Wang, H. L. LU ; Svensson, G. P. LU ; Marques, J. F. LU ; Hódar, J. A. ; Boettner, G. H. ; Ciornei, C. ; Dormont, L. ; Elkinton, J. S. and Franzén, M. LU , et al. (2019) In Entomologia Generalis 39(3-4). p.295-306
Abstract

The diversity of herbivorous insects may arise from colonization and subsequent specialization on different host plants. Such specialization requires changes in several insect traits, which may lead to host race formation if they reduce gene flow among populations that feed on different plants. Behavioural changes may play a relevant role in host race formation, for example if different races evolve distinct sexual communication signals or adult phenology. Previous research has revealed differences in larval phenology in different host-associated populations of the browntail moth, Euproctis chrysorrhoea (Lepidoptera: Erebidae). Here, sex pheromones among populations of this species are compared, and pheromone trapping data obtained is... (More)

The diversity of herbivorous insects may arise from colonization and subsequent specialization on different host plants. Such specialization requires changes in several insect traits, which may lead to host race formation if they reduce gene flow among populations that feed on different plants. Behavioural changes may play a relevant role in host race formation, for example if different races evolve distinct sexual communication signals or adult phenology. Previous research has revealed differences in larval phenology in different host-associated populations of the browntail moth, Euproctis chrysorrhoea (Lepidoptera: Erebidae). Here, sex pheromones among populations of this species are compared, and pheromone trapping data obtained is used in the field to build a phenological model that tests whether populations that feed on different plants differ in their adult flight period. The chemical and electrophysiological analyses revealed that two E. chrysorrhoea populations (on Prunus and on Arbutus unedo) use the same sex pheromone component for mate finding. Our trapping data, however, showed that males fly on average 25 days earlier in populations whose larvae feed on A. unedo compared to those whose larvae feed on Quercus species. Although the shifted phenology described here may underlie host-plant specialization in E. chrysorrhoea, and adults of this species are short-lived, the use of a common sexual pheromone and a large overlap in flight periods suggest that host race formation via allochronic isolation is unlikely in this moth.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Allochronic speciation, Electroantennography, Euproctis, Host races, Local adaptation, Stable isotopes
in
Entomologia Generalis
volume
39
issue
3-4
pages
12 pages
publisher
E. Schweizerbart Science Publishers
external identifiers
  • scopus:85077712014
ISSN
0171-8177
DOI
10.1127/entomologia/2019/0774
project
Host-race formation in the browntail moth Euproctis chrysorrhoea
language
English
LU publication?
yes
id
07ce0b93-2c65-418e-bdaa-910ba63535fb
date added to LUP
2020-01-23 13:59:06
date last changed
2021-01-06 05:44:32
@article{07ce0b93-2c65-418e-bdaa-910ba63535fb,
  abstract     = {<p>The diversity of herbivorous insects may arise from colonization and subsequent specialization on different host plants. Such specialization requires changes in several insect traits, which may lead to host race formation if they reduce gene flow among populations that feed on different plants. Behavioural changes may play a relevant role in host race formation, for example if different races evolve distinct sexual communication signals or adult phenology. Previous research has revealed differences in larval phenology in different host-associated populations of the browntail moth, Euproctis chrysorrhoea (Lepidoptera: Erebidae). Here, sex pheromones among populations of this species are compared, and pheromone trapping data obtained is used in the field to build a phenological model that tests whether populations that feed on different plants differ in their adult flight period. The chemical and electrophysiological analyses revealed that two E. chrysorrhoea populations (on Prunus and on Arbutus unedo) use the same sex pheromone component for mate finding. Our trapping data, however, showed that males fly on average 25 days earlier in populations whose larvae feed on A. unedo compared to those whose larvae feed on Quercus species. Although the shifted phenology described here may underlie host-plant specialization in E. chrysorrhoea, and adults of this species are short-lived, the use of a common sexual pheromone and a large overlap in flight periods suggest that host race formation via allochronic isolation is unlikely in this moth.</p>},
  author       = {Frago, Enric and Wang, H. L. and Svensson, G. P. and Marques, J. F. and Hódar, J. A. and Boettner, G. H. and Ciornei, C. and Dormont, L. and Elkinton, J. S. and Franzén, M. and Khrimian, A. and Marianelli, L. and Marziali, L. and Mas, H. and Perez Laorga, E. and Pérez-López, J. and Roques, A. and Simonca, V. and Anderbrant, O.},
  issn         = {0171-8177},
  language     = {eng},
  month        = {12},
  number       = {3-4},
  pages        = {295--306},
  publisher    = {E. Schweizerbart Science Publishers},
  series       = {Entomologia Generalis},
  title        = {Common pheromone use among host-associated populations of the browntail moth, euproctis chrysorrhoea, displaying different adult phenologies},
  url          = {http://dx.doi.org/10.1127/entomologia/2019/0774},
  doi          = {10.1127/entomologia/2019/0774},
  volume       = {39},
  year         = {2019},
}