Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations
1. Wide temporal fluctuations in host abundance are a potential source of instability and stochasticity in the spatiotemporal population dynamics of associated parasitoid species. Within parasitoid guilds (i.e. parasitoids with similar modes of host utilisation), a conceivable outcome is guild organ...
Published in: | Ecological Entomology |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1365-2311.2010.01201.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2311.2010.01201.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1365-2311.2010.01201.x/fullpdf |
id |
crwiley:10.1111/j.1365-2311.2010.01201.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1365-2311.2010.01201.x 2024-06-23T07:52:42+00:00 Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations VINDSTAD, OLE PETTER LAKSFORSMO HAGEN, SNORRE B. SCHOTT, TINO IMS, ROLF A. 2010 http://dx.doi.org/10.1111/j.1365-2311.2010.01201.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2311.2010.01201.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1365-2311.2010.01201.x/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecological Entomology volume 35, issue 4, page 456-463 ISSN 0307-6946 1365-2311 journal-article 2010 crwiley https://doi.org/10.1111/j.1365-2311.2010.01201.x 2024-05-31T08:14:35Z 1. Wide temporal fluctuations in host abundance are a potential source of instability and stochasticity in the spatiotemporal population dynamics of associated parasitoid species. Within parasitoid guilds (i.e. parasitoids with similar modes of host utilisation), a conceivable outcome is guild organisation according to a lottery model, in which guild members attain local dominance by colonising previously emptied habitats during increasing host density, before other guild members. In the spatial dimension, an expected manifestation of such dynamics is variable guild structure even across homogeneous habitats. 2. We examined the extent of large‐scale spatial patterning of guild characteristics in larval parasitoid wasps associated with cyclically outbreaking populations of the geometrid moth Operophtera brumata in northern Fennoscandia. The study was performed at the onset of the crash‐phase of the geometrid's outbreak cycle, along a 70‐km transect in costal northern Norway, characterised by largely homogeneous environmental conditions, except for a small climatic gradient. 3. There was a distinct large‐scale spatial turnover in dominance among the major parasitoid groups (i.e. guild structure) in O . brumata along the transect, whereas the total prevalence rate of the guild and its diversity showed no consistent variation. Guild structure was unrelated to host density. 4. Although group‐specific responses to a slight spatial climatic gradient cannot be rejected as a causal mechanism, we conclude that our results are consistent with the expectation from large‐scale stochastic extinction‐recolonisation dynamics among functionally equivalent parasitoids relying on a host with strongly cyclic population fluctuations. Article in Journal/Newspaper Fennoscandia Northern Norway Wiley Online Library Norway Ecological Entomology 35 4 456 463 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
1. Wide temporal fluctuations in host abundance are a potential source of instability and stochasticity in the spatiotemporal population dynamics of associated parasitoid species. Within parasitoid guilds (i.e. parasitoids with similar modes of host utilisation), a conceivable outcome is guild organisation according to a lottery model, in which guild members attain local dominance by colonising previously emptied habitats during increasing host density, before other guild members. In the spatial dimension, an expected manifestation of such dynamics is variable guild structure even across homogeneous habitats. 2. We examined the extent of large‐scale spatial patterning of guild characteristics in larval parasitoid wasps associated with cyclically outbreaking populations of the geometrid moth Operophtera brumata in northern Fennoscandia. The study was performed at the onset of the crash‐phase of the geometrid's outbreak cycle, along a 70‐km transect in costal northern Norway, characterised by largely homogeneous environmental conditions, except for a small climatic gradient. 3. There was a distinct large‐scale spatial turnover in dominance among the major parasitoid groups (i.e. guild structure) in O . brumata along the transect, whereas the total prevalence rate of the guild and its diversity showed no consistent variation. Guild structure was unrelated to host density. 4. Although group‐specific responses to a slight spatial climatic gradient cannot be rejected as a causal mechanism, we conclude that our results are consistent with the expectation from large‐scale stochastic extinction‐recolonisation dynamics among functionally equivalent parasitoids relying on a host with strongly cyclic population fluctuations. |
format |
Article in Journal/Newspaper |
author |
VINDSTAD, OLE PETTER LAKSFORSMO HAGEN, SNORRE B. SCHOTT, TINO IMS, ROLF A. |
spellingShingle |
VINDSTAD, OLE PETTER LAKSFORSMO HAGEN, SNORRE B. SCHOTT, TINO IMS, ROLF A. Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
author_facet |
VINDSTAD, OLE PETTER LAKSFORSMO HAGEN, SNORRE B. SCHOTT, TINO IMS, ROLF A. |
author_sort |
VINDSTAD, OLE PETTER LAKSFORSMO |
title |
Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
title_short |
Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
title_full |
Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
title_fullStr |
Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
title_full_unstemmed |
Spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
title_sort |
spatially patterned guild structure in larval parasitoids of cyclically outbreaking winter moth populations |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1365-2311.2010.01201.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2311.2010.01201.x http://onlinelibrary.wiley.com/wol1/doi/10.1111/j.1365-2311.2010.01201.x/fullpdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia Northern Norway |
genre_facet |
Fennoscandia Northern Norway |
op_source |
Ecological Entomology volume 35, issue 4, page 456-463 ISSN 0307-6946 1365-2311 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2311.2010.01201.x |
container_title |
Ecological Entomology |
container_volume |
35 |
container_issue |
4 |
container_start_page |
456 |
op_container_end_page |
463 |
_version_ |
1802644082376310784 |