Elevational variation in voltinism demonstrates climatic adaptation in the dark bush-cricket
Ľudmila Černecká
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorMartina Dorková
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorCorresponding Author
Benjamín Jarčuška
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Correspondence: Benjamín Jarčuška, Institute of Forest Ecology, Slovak Academy of Sciences, Ľ. Štúra 2, 960 53 Zvolen, Slovakia.
E-mail: [email protected]
Search for more papers by this authorPeter Kaňuch
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorĽudmila Černecká
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorMartina Dorková
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorCorresponding Author
Benjamín Jarčuška
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Correspondence: Benjamín Jarčuška, Institute of Forest Ecology, Slovak Academy of Sciences, Ľ. Štúra 2, 960 53 Zvolen, Slovakia.
E-mail: [email protected]
Search for more papers by this authorPeter Kaňuch
Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
Search for more papers by this authorAbstract
1. Phenotypic plasticity and/or genetic adaptation may allow species to live in a variable environment. It has been shown that eggs of the dark bush-cricket, Pholidoptera griseoaptera, which experienced an insufficient warm treatment (shorter and/or colder), had a longer development time and hatched predominantly after the second diapause.
2. Given the broad distribution of this species from sea level to the timber line, we expected variation in voltinism along a climatic gradient. To reveal the role of natural selection in egg-hatching patterns, we compared different and unrelated populations sampled along a 1000 m elevational gradient in a common laboratory experiment.
3. In the same rearing microclimate, we found that populations from mountains had mostly a shorter life cycle, whereas semivoltinism prevailed in lowland populations.
4. This demonstrated the genetically underpinned local adaptation of this insect to harsh mountain environments with a shorter growing season determined by elevation.
Conflict of interest
The authors declare that they have no conflict of interest.
Open Research
Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
| Filename | Description |
|---|---|
| een12972-sup-0001-SupInfo.docxWord 2007 document , 16.2 KB |
Table S1: Outputs of the best beta regression model evaluating the relationship between the proportion of hatched eggs and population elevation and the number of diapauses which the embryos had undergone and their interaction with regard to different processing of laid eggs (eggs collected in 2017 and stored 1–2 months at room temperature before thermal treatments; eggs collected in 2018 and incubated directly). Table S2: Summary of beta regression models' comparisons evaluating the relationship between the proportion of hatched eggs and different processing of laid eggs and population elevation. Models were evaluated by using likelihood-ratio test (χ2) against intercept-only model. The best model (*) outputs are in Table S3. Table S3: Outputs of the best beta regression model evaluating the relationship between the proportion of hatched eggs and different processing of laid eggs. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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