Short Communication |
Corresponding author: Piotr G. Jablonski ( snulbee@behecolpiotrsangim.org ) Academic editor: Alina Avanesyan
© 2018 Yongjun Jung, Minjung Baek, Sang-im Lee, Piotr G. Jablonski.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Jung Y, Baek M, Lee S-i, Jablonski PG (2018) Microhabitat segregation among three co-existing species of grasshoppers on a rural meadow near Seoul, South Korea. Journal of Orthoptera Research 27(2): 173-175. https://doi.org/10.3897/jor.27.28402
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Microhabitat segregation among grasshopper species in Asia has not been well studied. We determined the differences in the use of substrates by three common North East Asian grasshopper species co-existing on a natural meadow near Seoul, South Korea. While many Oedaleus infernalis individuals were found on the ground, Acrida cinerea and Atractomorpha lata were usually observed on plants. Acrida cinerea was mostly observed on the grass Zoysia japonica (Poaceae) and Atractomorpha lata was mostly found on plants from the family Asteraceae. This is the first study to provide quantitative information about microhabitat differences among some common grasshoppers in rural habitats of continental North East Asia. Future studies should focus on determining the mechanisms that produce such ecological segregation.
Acrida cinerea , Atractomorpha lata , ecology, microhabitat, Oedaleus infernalis
Microhabitat selection is important for small ectothermic animals including insects (
The observation site (37°24.07’N, 126°44.62’E) was comprised of a 10,000 m2 lush grassland adjacent to Soraepogu Ecological Park, with an abundance of plants belonging to Asteraceae, especially Artemisia princeps and Aster pilosus. A hiking path crossed the meadow and each side of the trail was covered with a 1-m wide band of Zoysia japonica. To determine microhabitat segregation among the three species, we used a modified point-sampling technique (
The three grasshopper species differed significantly in their association with different plant families (Fig.
Number of individuals of the three grasshopper species observed on ground and plants. The category “Others” includes Fabaceae, Lamiaceae, Onagraceae, Polemoniaceae and Cannabaceae.
Substrate | Grasshopper | Total | ||
---|---|---|---|---|
A. cinerea | A. lata | O. infernalis | ||
Ground | 6 | 4 | 53 | 63 |
Asteraceae | 18 | 116 | 7 | 141 |
Poaceae | 51 | 22 | 28 | 101 |
Others | ||||
Fabaceae | 0 | 8 | 2 | 10 |
Lamiaceae | 1 | 4 | 0 | 5 |
Onagraceae | 0 | 3 | 1 | 4 |
Polemoniaceae | 1 | 0 | 1 | 2 |
Cannabaceae | 0 | 1 | 0 | 1 |
Total | 77 | 158 | 92 | 327 |
Atractomorpha lata utilizes host plants belonging to various families including Asteraceae, Convolvulaceae, and Fabaceae (
While Atractomorpha lata was found on Asteraceae as well as other plant families, Acrida cinerea was mostly observed on Poaceae (usually Zoysia japonica). Acrida spp. grasshoppers are known to prefer grass as a food resource (
Grasshoppers from Oedipodinae are generally known to favor bare ground (
In summary, we documented microhabitat segregation among three common Asian grasshopper species and we hypothesized that food and microclimatic preferences, as well as phylogenetic history, might have contributed to the observed differences. These differences coincide with the differences between species in adaptations to camouflage their bodies in their respective microhabitats. Future experiments should determine if active preferences for specific habitats are responsible for the observed segregation, and if interspecific competition affects the segregation.
We are thankful to field helpers Eunjeong Yang and Yeojoo Yoon. We thank Tim Gardiner and Tan Ming Kai for helpful comments. The study was funded by NRF grants 2016R1D1A1B03934340 and 2013R1A2A2A01006394, the DGIST Start-up Fund Program of the Ministry of Science, and the BK 21 program awarded to the School of Biological Sciences, Seoul National University. YJ and MB designed and conducted the field work, analyzed data and wrote the paper with SIL and PGJ. All authors contributed to the final version of the manuscript.