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45 results for “Mecopoda”
FIGURE 15. C in Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data
FIGURE 15. C-banded karyotypes (left side) and mitotic metaphase (right side) of five Mecopoda species with different chromosome number (2n). Karyotypes are reconstructed by arranging homologous chromosomes in order of decreasing size. X, sex chromosome.
FIGURE 21 in Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data
FIGURE 21. Distribution map of Eumecopoda species in and around Northwestern New Guinea. 1 type locality of E. cyrtoscelis zhantievi subsp. nov., 2 type locality of E. cyrtoscelis aru (Gorochov 2020, Redtenbacher 1892, Willemse 1933), 3–6 E. cyrtoscelis cyrtoscelis (3 type locality, 4 Hebard 1922, 5, 6 Helfert & Sänger 2007), 7–8 E. superba (7 Griffini 1908, Gorochov 2020, 8 type locality), 9–11 E. moluccarum (9 type locality, 10 Hebard 1922, 11 Gorochov 2020), 12 type locality of E. sp. spinosa Gorochov 2020, 13 type locality of E. spinosa supiori Gorochov 2020. Map based on SimpleMappr (Shorthouse, 2010).
FIGURE 1 in Bioacoustics and systematics of Mecopoda (and related forms) from South East Asia and adjacent areas (Orthoptera, Tettigonioidea, Mecopodinae) including some chromosome data
FIGURE 1. Mirror cells in the right male tegmen, viewed from the lower (A, C) and upper (B, D) side. A–B Mecopoda himalaya (CH3411), a member of the niponensis subgroup, C–D M. sismondoi sp. nov. (CH3688), confracta subgroup. Note the pretzel-shaped mirror in both species. Scale 5 mm.
FIGURE 3 in Taxonomy of a katydid genus Mecopoda Serville (Orthoptera: Tettigoniidae, Mecopodinae) from East Asia
FIGURE 3. Calling song of two subspecies of the species M. minor sp. nov.. Oscillogram of a whole song (a), one (b) or two (d) chirp groups in the beginning, or the continuous repeated syllable groups (e, h, i) in the rear trill segment. Sonogramm of the beginning chirp segment (c), of the rear trill segment (f, j), and power spectrum (g, k) of the calling song. a–g: M. minor minor subsp. nov.; h–k: M. m. yunnana subsp. nov..
FIGURE 1 in Taxonomy of a katydid genus Mecopoda Serville (Orthoptera: Tettigoniidae, Mecopodinae) from East Asia
FIGURE 1. Calling songs of the species group niponensis. a–e: M. niponensis (Haan, 1843), f–j: M. fallax He, 2019, k–o: M. crescendo sp. nov., p–r: M. himalaya sp. nov.; s–u: M. marmorata He. Oscillogram of a song unit (a, f, k), the syllable groups in the beginning of a song unit (b, g, l), at the climax of a song unit (c, h, m), and at the end of a song unit (d, i, n); Oscillogram of unchanged continuous syllable groups (p), and neighboring syllable groups (q). The spectrum of the calling song (e, j, o, r, u).
FIGURE 2 in Taxonomy of a katydid genus Mecopoda Serville (Orthoptera: Tettigoniidae, Mecopodinae) from East Asia
FIGURE 2. Calling song of the species group confracta. a–e: M. confracta sp. nov., f–j: M. synconfracta sp. nov., k–o: Mecopoda_"S" (Sismondo 1990). Oscillogram of representative song units (a, f, k), a song unit (b, d, l), the syllable groups at the climax of a song unit (c, h, m), and at the end of a song unit (d, i, n). Spectrum of the calling song (e, j, o).
Data from: Reproductive isolation in the acoustically divergent groups of Tettigoniid, Mecopoda elongata
Sympatric divergent populations of the same species provide an opportunity to study the evolution and maintenance of reproductive isolation. Male mating calls are important in sexual selection acoustically communicating species, and they also have the potential to maintain isolation among species or incipient species. We studied divergent south Indian populations of the bush cricket Mecopoda elongata which are extremely difficult to distinguish morphologically, but which exhibit striking divergence in male acoustic signals. We performed phonotactic experiments investigating the relative preference of females of the "Chirper" song type for calls of all 5 of the song types found in the region (in varying degrees of sympatry). We found that Chirper females preferred their own song type and were completely unresponsive to three trilling song types. Chirper females were occasionally attracted to the call type "Double Chirper" (the call most similar to their own type), suggesting call preference alone cannot provide a complete isolating mechanism. To investigate the basis of call preference we investigated the response of chirper females to variation in chirp rate. Chirper females responded most frequently to a mean chirp rate characteristic of their own song type rather than a higher chirp rate which would be more characteristic of the Double-Chirper song type. This suggests females drive stabilising selection on male chirp rate, which may contribute to the maintenance of isolation. Finally, a no-choice mating experiment using Chirper females and Chirper and Double Chirper males revealed a significant preference of Chirper females to mate with their own song type, even without a requirement for phonotaxis. Overall, the strong specificity of Chirper females for their 'own' song type provides evidence for behavioural isolation among divergent sympatric Mecopoda song types being maintained by female preference for both male song type and subsequent mating probability driven by other cues.
Mecopoda Call Diversity work Meghalaya
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FIGURE 3 in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 3. Phylogenetic reconstruction of Mecopoda spp. in China based on COI gene. The tree was constructed via Maximum likelihood (ML) with GTR+G and rooted by E. cheni and T. diuturnus as outgroups. Bootstrap values and posterior probabilities are indicated above each branch. The typical individuals of each species are shown in right.
FIGURE 5 in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 5. Calling songs of Mecopoda spp. from China. A: M. elongata elongata, B: M. niponensis, C: M. fallax sp. nov., D: M. hainanensis sp. nov.
FIGURE 2. Mecopoda spp. from China. A-C in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 2. Mecopoda spp. from China. A-C: M. elongata elongata, DE: M. fallax sp. nov., FG: M. niponensis, HI: M. hainanensis sp. nov., J: M. mamorata sp. nov.
Data from: Reproductive isolation in the acoustically divergent groups of Tettigoniid, Mecopoda elongata
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FIGURE 7. M in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 7. M. hainanensis in living condition. A: male, B: female.
FIGURE 4. M. niponensis, A in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 4. M. niponensis, A: junior instar, B: ultimate instar, C: female adult laying eggs.
FIGURE 1 in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 1. Varied morphology of M. niponensis from Tianmushan, Lin'an, Zhejiang, China.
FIGURE 6 in Three new species of genus Mecopoda Serville, 1831 from China (Orthoptera: Tettigoniidae: Mecopodinae)
FIGURE 6. Distribution of Mecopoda spp.
Fig 5 from: Dutta R, Reddy M, Tregenza T (2019) Discovery of an acoustically locating parasitoid with a potential role in divergence of song types among sympatric populations of the bush cricket Mecopoda elongata. Journal of Orthoptera Research 28(2): 181-186. https://doi.org/10.3897/jor.28.34115
Fig 5 The number of infected and uninfected M. elongata individuals sampled at the three different sampling sites within the two-year sampling period (2013–14).
Fig 3 from: Dutta R, Reddy M, Tregenza T (2019) Discovery of an acoustically locating parasitoid with a potential role in divergence of song types among sympatric populations of the bush cricket Mecopoda elongata. Journal of Orthoptera Research 28(2): 181-186. https://doi.org/10.3897/jor.28.34115
Fig 3 Auditory spiracle encircled by peritreme and tympanal membrane of tachinid parasitoid affecting M. elongata song types.
Fig 4 from: Dutta R, Reddy M, Tregenza T (2019) Discovery of an acoustically locating parasitoid with a potential role in divergence of song types among sympatric populations of the bush cricket Mecopoda elongata. Journal of Orthoptera Research 28(2): 181-186. https://doi.org/10.3897/jor.28.34115
Fig 4 Modified inflated prosternum acting as a hearing organ in tachinid fly affecting M. elongata song types. AS: auditory spiracle, PTM: prosternal tympanal membrane, TP: tympanal pit, and PI: prosternal inflation (Lakes-Harlan and Heller 1992, Hedwig and Robert 2013).
Fig 1 from: Dutta R, Reddy M, Tregenza T (2019) Discovery of an acoustically locating parasitoid with a potential role in divergence of song types among sympatric populations of the bush cricket Mecopoda elongata. Journal of Orthoptera Research 28(2): 181-186. https://doi.org/10.3897/jor.28.34115
Fig 1 Oscillograms showing distinct temporal features of the three M. elongata song types: Double Chirper, Two Part, and Helicopter.
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OpenNeuro
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