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Biotic and abiotic factors investigated in two Drosophila species – evidence of both negative and positive effects of interactions on performance

Ørsted, Michael; Schou, Mads Fristrup LU and Kristensen, Torsten Nygaard (2017) In Scientific Reports 7.
Abstract
Multiple environmental factors acting in concert can interact and strongly influence population fitness and ecosystem composition. Studies investigating interactions usually involve only two environmental factors; most frequently a chemical and another abiotic factor such as a stressful temperature. Here we investigate the effects of three environmental factors: temperature, an insecticide (dimethoate) and interspecific co-occurrence. We expose two naturally co-occurring species of Drosophila (D. hydei and D. melanogaster) to the different environments during development and examine the consequences on several performance measures. Results are highly species and trait specific with evidence of two- and three-way interactions in... (More)
Multiple environmental factors acting in concert can interact and strongly influence population fitness and ecosystem composition. Studies investigating interactions usually involve only two environmental factors; most frequently a chemical and another abiotic factor such as a stressful temperature. Here we investigate the effects of three environmental factors: temperature, an insecticide (dimethoate) and interspecific co-occurrence. We expose two naturally co-occurring species of Drosophila (D. hydei and D. melanogaster) to the different environments during development and examine the consequences on several performance measures. Results are highly species and trait specific with evidence of two- and three-way interactions in approximately 30% of all cases, suggesting that additive effects of combined environmental factors are most common, and that interactions are not universal. To provide more informative descriptions of complex interactions we implemented re-conceptualised definitions of synergism and antagonism. We found approximately equal proportions of synergistic and antagonistic interactions in both species, however the effects of interactions on performance differed between the two. Furthermore, we found negative impacts on performance in only 60% of interactions, thus our study also reveals a high proportion of cases with positive effects of interactions. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Scientific Reports
volume
7
pages
13 pages
publisher
Nature Publishing Group
external identifiers
  • scopus:85008705363
ISSN
2045-2322
DOI
10.1038/srep40132
language
Unknown
LU publication?
no
id
1c0920fc-0107-4b3d-a62d-a234a4b0a6c5
alternative location
http://www.nature.com/articles/srep40132
date added to LUP
2017-12-18 09:43:43
date last changed
2018-04-22 04:34:16
@article{1c0920fc-0107-4b3d-a62d-a234a4b0a6c5,
  abstract     = {Multiple environmental factors acting in concert can interact and strongly influence population fitness and ecosystem composition. Studies investigating interactions usually involve only two environmental factors; most frequently a chemical and another abiotic factor such as a stressful temperature. Here we investigate the effects of three environmental factors: temperature, an insecticide (dimethoate) and interspecific co-occurrence. We expose two naturally co-occurring species of Drosophila (D. hydei and D. melanogaster) to the different environments during development and examine the consequences on several performance measures. Results are highly species and trait specific with evidence of two- and three-way interactions in approximately 30% of all cases, suggesting that additive effects of combined environmental factors are most common, and that interactions are not universal. To provide more informative descriptions of complex interactions we implemented re-conceptualised definitions of synergism and antagonism. We found approximately equal proportions of synergistic and antagonistic interactions in both species, however the effects of interactions on performance differed between the two. Furthermore, we found negative impacts on performance in only 60% of interactions, thus our study also reveals a high proportion of cases with positive effects of interactions.},
  articleno    = {7:40132},
  author       = {Ørsted, Michael and Schou, Mads Fristrup and Kristensen, Torsten Nygaard},
  issn         = {2045-2322},
  language     = {und},
  pages        = {13},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {Biotic and abiotic factors investigated in two Drosophila species – evidence of both negative and positive effects of interactions on performance},
  url          = {http://dx.doi.org/10.1038/srep40132},
  volume       = {7},
  year         = {2017},
}