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56 results for “Chorthippus”
Figure 9 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 9 Oscillograms of rivalry songs in Chorthippus miramae from Altai republic A and Pavlodar region of Kazakhstan B,C. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in D–H). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. The ambient temperature near a singing male was 29 – 31°C.
Figure 6 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 6 Oscillograms of calling songs A–F and rivalry songs G,H in Chorthippus maritimus from Primorskiy kray (A) Macedonia (B) Sukhumi region (C) and Saratov region (G). Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in D,E,F,H). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. The ambient temperature near a singing male was 33 – 34°C in (A) and 29 – 30°C in other cases.
Figure 3 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 3 Morphological differences between Chorthippus brunneus (green dots), C. maritimus (red dots), and C. miramae (blue dots). A,B length of stridulatory file vs. distance from the last stridulatory peg to the tip of knee in males (A) and females (B) C,D results of Principal Component Analysis based on 6 characters are shown for PC 1 and PC 2 in males (C) and females (D) E loadings of different characters to PC 1 and PC 2.
Figure 2 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 2 Morphology of fore wing and hind leg in Chorthippus miramae (Vorontsovsky) from Orenburg region A fore wing with complete venation B fore wing with main veins; C hind leg. The measured morphological characters are indicated with arrows and brackets.
Figure 8 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 8 Oscillograms of courtship songs and female response songs in Chorthippus miramae from Pavlodar region A West-Kazakhstan region B and Altai republic C. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in D–F). During courtship, a male can produce audible (C,F) or silent (A,D) variants of song. Female responses with leg movements recordings (B, E) and without them (A,D) are shown. In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. The ambient temperature near a singing specimen was 29 – 31°C.
Figure 5 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 5 Differences in calling songs between Chorthippus brunneus, C. maritimus, and C. miramaeA–D boxplots for the brunneus-like echeme duration (A) for the brunneus-like pulse rate (B) for the maritimus-like echeme duration (C) and the maritimus-like syllable duration (D) medians (dots), first and third quartiles (boxes), the 10th and 90th percentiles (whiskers), and outliers (dots beyond whiskers) are shown E results of Principal Component Analysis based on 5 song characters are shown for PC 1 and PC 2 in C. brunneus (green dots), C. maritimus (red dots), and C. miramae (blue dots) F loadings of different characters to PC 1 and PC 2.
Figure 4 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 4 Oscillograms of calling songs A–E and rivalry songs F,G in Chorthippus brunneus from Kostroma region (A) Poltava region (B) and Saratov region (F). Song recordings are presented at four different speeds (faster oscillograms of the indicated parts of the songs shown in C,D,E,G). In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. Different song parameters are indicated by brackets and arrows. The ambient temperature near a singing male was 29 – 32°C.
Figure 7 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 7 Oscillograms of calling songs of Chorthippus miramae from Orenburg region A, West-Kazakhstan region C and Buryatia D,E. Song recordings are presented at three different speeds (faster oscillograms of the indicated parts of the songs shown in F–J. At small scales (A–D) the maritimus-like echemes can be distinguished from the brunneus-like echemes by the higher amplitude. In all oscillograms the two upper lines are recordings of hind leg movements and the lower line is the sound recording. The ambient temperature near a singing male was 34 – 35 °C in (A,E) and 29 – 31°C in other cases.
Figure 1 from: Tarasova T, Tishechkin D, Vedenina V (2021) Songs and morphology in three species of the Chorthippus biguttulus group (Orthoptera, Acrididae, Gomphocerinae) in Russia and adjacent countries. ZooKeys 1073: 21-53. https://doi.org/10.3897/zookeys.1073.75539
Figure 1 Map of localities where the specimens of Chorthippus brunneus (green triangles), C. maritimus (red squares) and C. miramae (blue circles) were collected. The localities with song recordings are numbered and marked by filled icons.
Data from: Faster development covaries with higher DNA damage in grasshoppers (Chorthippus albomarginatus) from Chernobyl
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Historical isolation facilitates species radiation by sexual selection: insights from Chorthippus grasshoppers
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Data from: A population genomic scan in Chorthippus grasshoppers unveils previously unknown phenotypic divergence
Understanding the genetics of speciation and the processes that drive it is a central goal of evolutionary biology. Grasshoppers of the Chorthippus species group differ strongly in calling song (and corresponding female preferences) but are exceedingly similar in other characteristics such as morphology. Here, we performed a population genomic scan on three Chorthippus species (Chorthippus biguttulus, C. mollis and C. brunneus) to gain insight into the genes and processes involved in divergence and speciation in this group. Using an RNA-seq approach, we examined functional variation between the species by calling SNPs for each of the three species pairs and using FST-based approaches to identify outliers. We found approximately 1% of SNPs in each comparison to be outliers. Between 37% and 40% of these outliers were nonsynonymous SNPs (as opposed to a global level of 17%) indicating that we recovered loci under selection. Among the outliers were several genes that may be involved in song production and hearing as well as genes involved in other traits such as food preferences and metabolism. Differences in food preferences between species were confirmed with a behavioural experiment. This indicates that multiple phenotypic differences implicating multiple evolutionary processes (sexual selection and natural selection) are present between the species.
Data from: A population genomic scan in Chorthippus grasshoppers unveils previously unknown phenotypic divergence
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Fig. 2 in Genetic and morphological divergence among Gravel Bank Grasshoppers, Chorthippus pullus (Acrididae), from contrasting environments
Fig. 2 Morphometric distances measured on each individual of C. pullus sampled for the study. For descriptions of numbered traits, see Table 1
Fig. 1 in Genetic and morphological divergence among Gravel Bank Grasshoppers, Chorthippus pullus (Acrididae), from contrasting environments
Fig. 1 Geographic locations and genetic composition of the seven populations of the Gravel Bank Grasshopper included in the study. ISA, LOI and LIN (Bavaria, Germany) are gravel bank populations (solid circles); OPP, GRU (both Brandenburg, Germany), UHY (Saxony, Germany) and MIS (Ukraine) are heath populations (open circles). Population composition shown in pie-diagrams, with slice size proportional to frequency of corresponding allele (coded as in Table 2); the two most frequent alleles (A and C) represented in grey and black, respectively; all others in white. Shaded area is the species' range (Maas et al. 2002; I. Landeck unpublished data)
Fig. 3 Haplotype network derived from the Cpunl-1 in Genetic and morphological divergence among Gravel Bank Grasshoppers, Chorthippus pullus (Acrididae), from contrasting environments
Fig. 3 Haplotype network derived from the Cpunl-1 data set; alleles coded as in Table 2. Pie diameters proportional to number of individuals carrying that particular haplotype (see inlet at bottom right); numbers next to pies or pie slices indicate how many individuals carried that particular haplotype. Shading of pies and slices (see inlet at top right) reflects frac- tions of haplotypes contributed by the different populations; Bavarian and eastern German (Brandenburg + Saxony) populations presented as two pools based on pairwise FST values (no significant differentiation detected within either region). Solid dots represent missing haplotypes; dashed lines indicate that multiple connections among haplotypes are possible but not favored
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