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Journal articles on the topic 'Chorthippus parallelus'

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Published: 4 June 2021

Last updated: 17 February 2022

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1

BUTLIN, R. K., and G. M. HEWITT. "A hybrid zone between Chorthippus parallelus parallelus and Chorthippus parallelus erythropus (Orthoptera: Acrididae): behavioural characters." Biological Journal of the Linnean Society 26, no. 3 (November 1985): 287–99. http://dx.doi.org/10.1111/j.1095-8312.1985.tb01637.x.

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2

Bella, J. L., G. M. Hewitt, and J. Gosálvez. "Meiotic imbalance in laboratory-produced hybrid males of Chorthippus parallelus parallelus and Chorthippus parallelus erythropus." Genetical Research 56, no. 1 (August 1990): 43–48. http://dx.doi.org/10.1017/s001667230002886x.

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SummaryThe grasshopper Chorthippus parallelus has two quite distinct subspecies, which meet along the Pyrenees forming a hybrid zone. Using silver staining we show that on the French side Cp. parallelus has three nucleolar organizer regions, on the L2, L3 and X chromosomes, while on the Spanish side Cp. erythropus has only two NORs, on the L2 and L3. Laboratory F1 hybrid males show reciprocal differences in the expression of NORs. When a Cp. erythropus is female parent the male progeny show four active NORs in mitotic cells and two silver precipitates in meiotic cells, as expected. But when a Cp. parallelus female donates the X with a NOR, her male offspring have a variable disrupted nucleolar expression. Some NORs are not expressed and extra sites of cryptic rDNA are revealed. Meiosis is more disturbed in this latter F1 cross with higher levels of polyploidy, but both Fls show around 90% spermatid abnormality. Such variation in rDNA expression is also found in individuals collected from the hybrid zone, and the role of this disturbance in affecting fitness is discussed.

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3

Gosálvez, J., C. López-Fernández, L. J. Bella, R. K. Butlin, and G. M. Hewitt. "A hybrid zone between Chorthippus parallelus parallelus and Chorthippus parallelus erythropus (Orthoptera: Acrididae): chromosomal differentiation." Genome 30, no. 5 (October 1, 1988): 656–63. http://dx.doi.org/10.1139/g88-111.

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Two subspecies of the meadow grasshopper Chorthippus parallelus form narrow hybrid zones in the Pyrenees. We studied the patterns of chromosome divergence to evaluate their possible role in the maintenance of such hybrid zones under natural conditions. The two subspecies share some common features such as identical chromosome number, similar basic chromosome form, and the GC-rich nature of all the heterochromatic DNA. Similar positions for the nucleolar organizer region (NOR) in two pairs of autosomes were also observed. The main difference was the presence of an active NOR in the X chromosome in Cp. parallelus that was absent from Cp. erythropus. The pattern of banding by C-banding, acridine orange, and chromomycin A3 also showed the subspecific characteristics on this chromosome. The presence or absence of an active NOR on the X chromosome was used to analyse the hybrid zones in two different transects of the Pyrenees, and clear clines of X NOR frequencies were observed passing from Cp. parallelus to Cp. erythropus. Some meiotic abnormalities were found in individuals from the hybrid zones with the subsequent production of abnormal sperm. Differences in genetic activity involving the sexual chromosome and the male sterility found in F1 hybrids produced in laboratory crosses are discussed as an example of Haldane's Rule.Key words: insect cytogenetics, hybrid zones, speciation.

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4

BUTLIN, R. K., and G. M. HEWITT. "A hybrid zone between Chorthippus parallelus parallelus and Chorthippus parallelus erythropus (Orthoptera: Acrididae): morphological and electrophoretic characters." Biological Journal of the Linnean Society 26, no. 3 (November 1985): 269–85. http://dx.doi.org/10.1111/j.1095-8312.1985.tb01636.x.

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5

Gardiner, Tim, and Julian Hill. "Feeding preferences of Chorthippus parallelus (Orthoptera: Acrididae)." Journal of Orthoptera Research 13, no. 2 (December 2004): 197–203. http://dx.doi.org/10.1665/1082-6467(2004)013[0197:fpocpo]2.0.co;2.

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6

Cabrero, J., J. D. Alché, and J. P. M. Camacho. "A test for equilocality of supernumerary heterochromatin distribution in grasshoppers." Genome 29, no. 1 (February 1, 1987): 110–15. http://dx.doi.org/10.1139/g87-019.

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The presence of extra segments in four or more nonhomologous chromosome pairs led us to test the applicability of the principle of the principle of equilocality of heterochromatin distribution to supernumerary heterochromatin. In Chorthippus brunneus, which carries extra segments on all chromosomes except the L3, the 13 heterochromatic variants occupy all possible locations with 3 proximal, 5 interstitial, and 5 distal. This indicates that equilocality does not seem to apply to the supernumerary heterochromatin in this species. On the other hand, the four extra segments found in Chorthippus parallelus and five of the seven extra heterochromatic segments found in Chorthippus binotatus are all located distally on the M5–S8 chromosomes. Thus for these groups of chromosomes the extra heterochromatic segments do appear to show a tendency for an equilocal distribution. Key words: Chorthippus, heterochromatin.

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7

Reinhardt, Klaus. "Determinants of ejaculate size in a grasshopper ( Chorthippus parallelus )." Behavioral Ecology and Sociobiology 50, no. 6 (November 1, 2001): 503–10. http://dx.doi.org/10.1007/s002650100398.

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8

Vaughan, H. E., J. S. Heslop-Harrison, and G. M. Hewitt. "The localization of mitochondrial sequences to chromosomal DNA in orthopterans." Genome 42, no. 5 (October 1, 1999): 874–80. http://dx.doi.org/10.1139/g99-020.

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There is growing evidence that the integration of mitochondrial DNA sequences into nuclear and chloroplast genomes of higher organisms may be widespread rather than exceptional. We report the localization of 18S-25S rDNA and mitochondrial DNA sequences to meiotic chromosomes of several orthopteran species using in situ hybridisation. The cytochrome oxidase I (COI) sequence localizes to the centromeric and two telomeric regions of the eight bivalents of Chorthippus parallelus, the telomeric regions in Schistocerca gregaria and is present throughout the genome of Italopodisma sp. (Orthoptera: Acrididae). The control region of the mitochondrion and COI localize to similar chromosomal regions in S. gregaria. These data explain sequencing data that are inconsistent with the COI sequence being solely mitochondrial. The different nuclear locations of mtDNA in the different genera studied suggest that grasshopper mtDNA-like sequences have been inserted into the nuclear genome more than once in Acridid history, and there may have been different mechanisms involved when these events occurred in each of these species.Key words: Schistocerca gregaria, Italopodisma spp., Chorthippus parallelus, in situ hybridisation, mitochondrial DNA, genome organization.

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9

BUTLIN, R. K., and G. M. HEWITT. "Genetic divergence in the Chorthippus parallelus species group (Orthoptera: Acrididae)." Biological Journal of the Linnean Society 31, no. 4 (August 1987): 301–10. http://dx.doi.org/10.1111/j.1095-8312.1987.tb01995.x.

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10

Niedobová, Jana, František Chládek, and Vladimír Hula. "Grasshoppers (Orthoptera: Caelifera) and crickets (Orthoptera: Ensifera) from slopes of Macošská stráň and Vilémovická stráň (Moravský kras Protected landscape area, Czech Republic)." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, no. 5 (2011): 179–86. http://dx.doi.org/10.11118/actaun201159050179.

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In 2008 we found 21 species of grasshoppers and crickets on Macošská stráň slope and 18 species on Vilémovická stráň slope. Both slopes are located in the northern part of the Moravský kras Protected landscape area and have xerothermic character. Both slopes are influenced by pasture management. For the most comprehensive picture of Orthoptera we used a standard method (sweeping of vegetation) and nonstandard methods (pitfall traps and Möricke yellow cups). Termophilous species of Orthoptera on Macošská stráň (47%) were dominating. On Vilémovická stráň mezophilous species (46%) were dominating. The most common species were Stenobothrus lineatus (Panzer, 1796) on Macošská stráň slope and Chorthippus parallelus (Zetterstedt, 1821), Stenobothrus lineatus, Chorthippus bigutulus (Linné, 1758) and Chorthippus dorsatus (Zetterstedt, 1821) on Vilémovická stráň slope. Rare species of this assemblage were Stenobothrus nigromaculatus (Herrich-Schaffer, 1840) which was on Macošská stráň slope only and Tetrix bipunctata (Linnaeus, 1758) which has much bigger abundances also on Macošská stráň slope.

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11

Bella, J. L., L. Serrano, G. M. Hewitt, and J. Gosálvez. "Heterochromatin heterogeneity and rapid divergence of the sex chromosomes in Chorthippus parallelus parallelus and C. p. erythropus (Orthoptera)." Genome 36, no. 3 (June 1, 1993): 542–47. http://dx.doi.org/10.1139/g93-074.

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Mitotic chromosomes from individuals of a Pyrenean hybrid zone between two subspecies of the grasshopper Chorthippus parallelus have been pretreated as for C-banding and subsequently stained with 4,6-diamidino-2-phenylindole (DAPI) and (or) Chromomycin A3 (CMA). The results, which are different from those obtained with Giemsa C-banding or standard DAPI – CMA treatments show (i) hidden heterochromatic heterogeneity that may be correlated with the existence of distinct families of repetitive DNAs, (ii) information about the possible independent origin of the three detected types of heterochromatin, and (iii) a further marker difference between the sex chromosomes of these two subspecies. This last result leads us to discuss the possible differential rates of evolution of sex chromosomes and autosomes in these subspecies and provides us with a new tool for the study of the structure and dynamics of this hybrid zone.Key words: hybrid zones, Orthoptera, cytogenetics, heterochromatin, fluorescence.

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12

Ritchie, Michael G., Roger K. Butlin, and Godfrey M. Hewitt. "Assortative mating across a hybrid zone in Chorthippus parallelus (Orthoptera: Acrididae)." Journal of Evolutionary Biology 2, no. 5 (September 1989): 339–52. http://dx.doi.org/10.1046/j.1420-9101.1989.2050339.x.

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13

Cooper, S. J. B., K. M. Ibrahim, and G. M. Hewitt. "Postglacial expansion and genome subdivision in the European grasshopper Chorthippus parallelus." Molecular Ecology 4, no. 1 (February 1995): 49–60. http://dx.doi.org/10.1111/j.1365-294x.1995.tb00191.x.

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14

Tregenza, T., V. L. Pritchard, and R. K. Butlin. "PATTERNS OF TRAIT DIVERGENCE BETWEEN POPULATIONS OF THE MEADOW GRASSHOPPER, CHORTHIPPUS PARALLELUS." Evolution 54, no. 2 (2000): 574. http://dx.doi.org/10.1554/0014-3820(2000)054[0574:potdbp]2.0.co;2.

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15

Tregenza, T., V. L. Pritchard, and R. K. Butlin. "PATTERNS OF TRAIT DIVERGENCE BETWEEN POPULATIONS OF THE MEADOW GRASSHOPPER, CHORTHIPPUS PARALLELUS." Evolution 54, no. 2 (April 2000): 574–85. http://dx.doi.org/10.1111/j.0014-3820.2000.tb00060.x.

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16

Flanagan, Mason, Gosálvez, and Hewitt. "Chromosomal differentiation through an Alpine hybrid zone in the grasshopper Chorthippus parallelus." Journal of Evolutionary Biology 12, no. 3 (May 1999): 577–85. http://dx.doi.org/10.1046/j.1420-9101.1999.00049.x.

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17

HEWITT, G. M., R. K. BUTLIN, and T. M. EAST. "Testicular dysfunction in hybrids between parapatric subspecies of the grasshopper Chorthippus parallelus." Biological Journal of the Linnean Society 31, no. 1 (May 1987): 25–34. http://dx.doi.org/10.1111/j.1095-8312.1987.tb01978.x.

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18

Cooper, S. J. B., and G. M. Hewitt. "Nuclear DNA sequence divergence between parapatric subspecies of the grasshopper Chorthippus parallelus." Insect Molecular Biology 2, no. 3 (November 1993): 185–94. http://dx.doi.org/10.1111/j.1365-2583.1993.tb00138.x.

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19

Jentzsch, Anja, Günther Köhler, and Jens Schumacher. "Environmental stress and fluctuating asymmetry in the grasshopper Chorthippus parallelus (Acrididae: Gomphocerinae)." Zoology 106, no. 2 (January 2003): 117–25. http://dx.doi.org/10.1078/0944-2006-00106.

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20

RITCHIE, M. G., R. K. BUTLIN, and G. M. HEWITT. "Causation, fitness effects and morphology of macropterism in Chorthippus parallelus (Orthoptera: Acrididae)." Ecological Entomology 12, no. 2 (May 1987): 209–18. http://dx.doi.org/10.1111/j.1365-2311.1987.tb00999.x.

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21

Paul, Aman, Michel Frederich, Roel Uyttenbroeck, Priyanka Malik, Sandrino Filocco, Aurore Richel, Stephanie Heuskin, et al. "Nutritional composition and rearing potential of the meadow grasshopper ( Chorthippus parallelus Zetterstedt)." Journal of Asia-Pacific Entomology 19, no. 4 (December 2016): 1111–16. http://dx.doi.org/10.1016/j.aspen.2016.09.012.

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22

Tregenza, Tom, Victoria L. Pritchard, and Roger K. Butlin. "THE ORIGINS OF PREMATING REPRODUCTIVE ISOLATION: TESTING HYPOTHESES IN THE GRASSHOPPER CHORTHIPPUS PARALLELUS." Evolution 54, no. 5 (2000): 1687. http://dx.doi.org/10.1554/0014-3820(2000)054[1687:toopri]2.0.co;2.

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23

Tim, Gardiner, and Hill Julian. "Directional dispersal patterns of Chorthippus parallelus (Orthoptera: Acrididae) in patches of grazed pastures." Journal of Orthoptera Research 13, no. 1 (June 2004): 135–41. http://dx.doi.org/10.1665/1082-6467(2004)013[0135:ddpocp]2.0.co;2.

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24

Tregenza, Tom, Victoria L. Pritchard, and Roger K. Butlin. "THE ORIGINS OF PREMATING REPRODUCTIVE ISOLATION: TESTING HYPOTHESES IN THE GRASSHOPPER CHORTHIPPUS PARALLELUS." Evolution 54, no. 5 (October 2000): 1687–98. http://dx.doi.org/10.1111/j.0014-3820.2000.tb00713.x.

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25

Zabal-Aguirre, M., F. Arroyo, J. García-Hurtado, J. de la Torre, G. M. Hewitt, and J. L. Bella. "Wolbachia effects in natural populations of Chorthippus parallelus from the Pyrenean hybrid zone." Journal of Evolutionary Biology 27, no. 6 (May 13, 2014): 1136–48. http://dx.doi.org/10.1111/jeb.12389.

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26

Lunt, David H., Kamal M. Ibrahim, and Godfrey M. Hewitt. "mtDNA phylogeography and postglacial patterns of subdivision in the meadow grasshopper Chorthippus parallelus." Heredity 80, no. 5 (May 1998): 633–41. http://dx.doi.org/10.1046/j.1365-2540.1998.00311.x.

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27

Reinhardt, K., G. Kohler, and J. Schumacher. "Females of the grasshopper Chorthippus parallelus (Zett.) do not remate for fresh sperm." Proceedings of the Royal Society of London. Series B: Biological Sciences 266, no. 1432 (October 7, 1999): 2003–9. http://dx.doi.org/10.1098/rspb.1999.0878.

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28

REINHARDT, KLAUS, GÜNTER KÖHLER, STEVE WEBB, and DYLAN CHILDS. "Field mating rate of female meadow grasshoppers, Chorthippus parallelus, estimated from sperm counts." Ecological Entomology 32, no. 6 (December 2007): 637–42. http://dx.doi.org/10.1111/j.1365-2311.2007.00923.x.

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29

Martínez-Rodríguez, P., M. Hernández-Pérez, and J. L. Bella. "Detection of Spiroplasma and Wolbachia in the Bacterial Gonad Community of Chorthippus parallelus." Microbial Ecology 66, no. 1 (April 16, 2013): 211–23. http://dx.doi.org/10.1007/s00248-013-0226-z.

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30

Tregenza, T., V. L. Pritchard, and R. K. Butlin. "The origins of postmating reproductive isolation: testing hypotheses in the grasshopper Chorthippus parallelus." Population Ecology 44, no. 3 (December 1, 2002): 137–44. http://dx.doi.org/10.1007/s101440200017.

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31

BUTLIN, R. K., and G. M. HEWITT. "Genetics of behavioural and morphological differences between parapatric subspecies of Chorthippus parallelus (Orthoptera: Acrididae)." Biological Journal of the Linnean Society 33, no. 3 (March 1988): 233–48. http://dx.doi.org/10.1111/j.1095-8312.1988.tb00810.x.

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32

Reinhardt, Klaus. "Sperm numbers vary between inter- and intra-population matings of the grasshopper Chorthippus parallelus." Biology Letters 2, no. 2 (February 22, 2006): 239–41. http://dx.doi.org/10.1098/rsbl.2006.0446.

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Comparing the reproductive output of intra- and inter-population matings is the most common way to assess whether post-mating reproductive isolation is caused by genetic incompatibilities. Such genetic incompatibility can however, only assume that the quantity of the post-mating signals involved does not differ between intra- and inter-population matings. This assumption may not be true because sexual selection predicts reduced mating effort towards low-quality mates and in many circumstances, allopatric partners are low-quality mates. Post-mating efforts may, therefore, be reduced in inter- compared to intra-population matings. Here, I test this crucial assumption by studying variation in one post-mating trait, sperm number, in crosses of two parapatric grasshopper populations. In both populations, males transferred fewer sperm to allopatric than sympatric females. If such plasticity with respect to population is common in other post-mating traits, differences between inter- and intra-population crosses may be more frequently caused by differences in sperm number rather than gamete incompatibility. Additionally, I found that sperm numbers declined less rapidly in the female storage organ of allopatric than sympatric females but its rate differed markedly between populations. This is discussed with respect to female adaptations to male traits.

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33

REINHARDT, Klaus. "Ejaculate size varies with remating interval in the grasshopper Chorthippus parallelus erythropus (Caelifera: Acrididae)." European Journal of Entomology 104, no. 4 (October 15, 2007): 725–29. http://dx.doi.org/10.14411/eje.2007.092.

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34

BUTLIN, R. K., C. FERRIS, J. GOSALVEZ, G. M. HEWITT, and M. G. RITCHIE. "Broad-scale mapping of a hybrid zone between subspecies of Chorthippus parallelus (Orthoptera: Acrididae)." Ecological Entomology 17, no. 4 (November 1992): 359–62. http://dx.doi.org/10.1111/j.1365-2311.1992.tb01070.x.

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35

Zabal-Aguirre, M., F. Arroyo, and J. L. Bella. "Distribution of Wolbachia infection in Chorthippus parallelus populations within and beyond a Pyrenean hybrid zone." Heredity 104, no. 2 (September 9, 2009): 174–84. http://dx.doi.org/10.1038/hdy.2009.106.

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36

NEEMS, RACHEL M., and ROGER K. BUTLIN. "Divergence in cuticular hydrocarbons between parapatric subspecies of the meadow grasshopper, Chorthippus parallelus (Orthoptera, Acrididae)." Biological Journal of the Linnean Society 54, no. 2 (February 1995): 139–49. http://dx.doi.org/10.1111/j.1095-8312.1995.tb01028.x.

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37

Reinhardt, K., J. Fuller, G. Kohler, and M. Stecher. "Reproductive potential of gamma-irradiated males of the meadow grasshopper Chorthippus parallelus (Zetterstedt) (Orth., Acrididae)." Journal of Applied Entomology 123, no. 9 (September 1999): 519–23. http://dx.doi.org/10.1046/j.1439-0418.1999.00426.x.

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38

Springate, Simon, and Matthew B. Thomas. "Thermal biology of the meadow grasshopper, Chorthippus parallelus, and the implications for resistance to disease." Ecological Entomology 30, no. 6 (December 2005): 724–32. http://dx.doi.org/10.1111/j.0307-6946.2005.00743.x.

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39

Neems, R. "Divergence in cuticular hydrocarbons between parapatric subspecies of the meadow grasshopper,chorthippus parallelus(Orthoptera, Acrididae)." Biological Journal of the Linnean Society 54, no. 2 (February 1995): 139–49. http://dx.doi.org/10.1006/bijl.1995.0008.

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40

Bella, J. L., R. K. Butlin, C. Ferris, and G. M. Hewitt. "Asymmetrical homogamy and unequal sex ratio from reciprocal mating-order crosses between Chorthippus parallelus subspecies." Heredity 68, no. 4 (April 1992): 345–52. http://dx.doi.org/10.1038/hdy.1992.49.

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41

Dagley, J. R., R. K. Butlin, and G. M. Hewitt. "Divergence in Morphology and Mating Signals, and Assortative Mating Among Populations of Chorthippus parallelus (Orthoptera: Acrididae)." Evolution 48, no. 4 (August 1994): 1202. http://dx.doi.org/10.2307/2410378.

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42

Vazquez, Patricia, Steven J. B. Cooper, Jaime Gosalvez, and Godfrey M. Hewitt. "Nuclear DNA introgression across a Pyrenean hybrid zone between parapatric subspecies of the grasshopper Chorthippus parallelus." Heredity 73, no. 4 (October 1994): 436–43. http://dx.doi.org/10.1038/hdy.1994.191.

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43

Ibrahim, K. M., S. J. B. Cooper, and G. M. Hewitt. "Testing for recombination in a short nuclear DNA sequence of the European meadow grasshopper, Chorthippus parallelus." Molecular Ecology 11, no. 3 (March 2002): 583–90. http://dx.doi.org/10.1046/j.0962-1083.2001.01441.x.

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44

BELLA, J. L., L. SERRANO, J. ORELLANA, and P. L. MASON. "The origin of the Chorthippus parallelus hybrid zone: chromosomal evidence of multiple refugia for Iberian populations." Journal of Evolutionary Biology 20, no. 2 (March 2007): 568–76. http://dx.doi.org/10.1111/j.1420-9101.2006.01254.x.

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45

Serrano, L., C. Garcia de la Vega, J. L. Bella, C. Lopez-Fernandez, G. M. Hewitt, and J. Gosalvez. "A hybrid zone between two subspecies of Chorthippus parallelus. X-chromosome variation through a contact zone." Journal of Evolutionary Biology 9, no. 2 (March 1996): 173–84. http://dx.doi.org/10.1046/j.1420-9101.1996.9020173.x.

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46

Dagley, J. R., R. K. Butlin, and G. M. Hewitt. "DIVERGENCE IN MORPHOLOGY AND MATING SIGNALS, AND ASSORTATIVE MATING AMONG POPULATIONS OF CHORTHIPPUS PARALLELUS (ORTHOPTERA: ACRIDIDAE)." Evolution 48, no. 4 (August 1994): 1202–10. http://dx.doi.org/10.1111/j.1558-5646.1994.tb05305.x.

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47

Wiesner, Kerstin R., Jan Christian Habel, Martin M. Gossner, Hugh D. Loxdale, Günter Köhler, Anja R. R. Schneider, Ralph Tiedemann, and Wolfgang W. Weisser. "Effects of habitat structure and land-use intensity on the genetic structure of the grasshopper species Chorthippus parallelus." Royal Society Open Science 1, no. 2 (October 2014): 140133. http://dx.doi.org/10.1098/rsos.140133.

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Land-use intensity (LUI) is assumed to impact the genetic structure of organisms. While effects of landscape structure on the genetics of local populations have frequently been analysed, potential effects of variation in LUI on the genetic diversity of local populations have mostly been neglected. In this study, we used six polymorphic microsatellites to analyse the genetic effects of variation in land use in the highly abundant grasshopper Chorthippus parallelus . We sampled a total of 610 individuals at 22 heterogeneous grassland sites in the Hainich-Dün region of Central Germany. For each of these grassland sites we assessed habitat size, LUI (combined index of mowing, grazing and fertilization), and the proportion of grassland adjoining the sampling site and the landscape heterogeneity (the latter two factors within a 500 m buffer zone surrounding each focal site). We found only marginal genetic differentiation among all local populations and no correlation between geographical and genetic distance. Habitat size, LUI and landscape characteristics had only weak effects on most of the parameters of genetic diversity of C. parallelus ; only expected heterozygosity and the grasshopper abundances were affected by interacting effects of LUI, habitat size and landscape characteristics. The lack of any strong relationships between LUI, abundance and the genetic structure might be due to large local populations of the species in the landscape, counteracting local differentiation and potential genetic drift effects.

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48

Ritchie, Michael G. "Are differences in song responsible for assortative mating between subspecies of the grasshopper Chorthippus parallelus (Orthoptera: Acrididae)?" Animal Behaviour 39, no. 4 (April 1990): 685–91. http://dx.doi.org/10.1016/s0003-3472(05)80379-3.

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Bun̄o, I., E. Torroja, C. López-Fernádez, R. K. Butlin, G. M. Hewitt, and J. Gosálvez. "A hybrid zone between two subspecies of the grasshopper Chorthippus parallelus along the Pyrenees: the west end." Heredity 73, no. 6 (December 1994): 625–34. http://dx.doi.org/10.1038/hdy.1994.170.

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Korkmaz, E. Mahir, David H. Lunt, Battal Çıplak, Naci Değerli, and Hasan H. Başıbüyük. "The contribution of Anatolia to European phylogeography: the centre of origin of the meadow grasshopper, Chorthippus parallelus." Journal of Biogeography 41, no. 9 (May 26, 2014): 1793–805. http://dx.doi.org/10.1111/jbi.12332.

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