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45 results for “secondary sexual character”
FIGURE 14 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 14. Seira mantis sp. n., tibio tarsal apex showing the tenent hairs, and foot complex; a — first foot complex; b — second foot complex; c — third foot complex.
FIGURE 9 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 9. Seira raptora sp. n. general chaetotaxy; a — meso and meta thoracic segments, and first abdominal segment, SEM 650x, bar 20µm; b — second abdominal segment, SEM 1000x, bar 20 m; c— third abdominal segment, SEM 950x, bar 10µm; d — fourth abdominal segment, SEM 500x, bar 100 m.
FIGURE 8. Macrochaetae distribution, a — S in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 8. Macrochaetae distribution, a — S. raptora sp. n.; b — S. mantis sp. n. Schematic representation according to Christiansen and Bellinger (1998, 2000) modified from Jacquemart, 1974.
FIGURE 5 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 5. Seira raptora sp. n., third foot complex, a— basal tooth bigger than medial and apical teeth; b — tenent hair capitate and ciliate; SEM 3300x, bar length 10 m.
FIGURE 6 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 6. Seira raptora sp. n., femur of the male left first leg; a — femur lateral view showing the femoral ventral broadening with spines in the apex, SEM 370x; b — close of the file of spines at the ventral distal apex of the femur, SEM 1150x.
FIGURE 4 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 4. Seira raptora sp. n., labial triangle, showing seta r normal and smooth, M12 and E feathered; SEM 1650x.
Figs. 19–27. Eutyphlus species, male secondary sexual characters. 19 in Revision ofEutyphlusLeConte (Coleoptera: Staphylinidae: Pselaphinae), with Description of a New Species and Phylogenetic Placement within the Tribe Trichonychini
Figs. 19–27. Eutyphlus species, male secondary sexual characters. 19) Modified mesotrochanter, mesotibia, and metatrochanter, A) Mesotibial spine on E. dybasi and E. spiralis, B) Mesotrochanteral flange on E. dybasi, C) Metatrochanteral spine on E. dybasi and E. spiralis; 20) E. prominens, ventrites, Type I; 21) E. prominens, ventrites, Type II; 22) E. prominens, ventrites, Type III; 23) E. prominens, ventrites, Type IV; 24) E. prominens, ventrites, Type V; 25) E. prominens, ventrites, Type VI; 26) E. spiralis, protibial spine; 27) E. schmitti, ventrites.
Figure 2 in Sperm quality, secondary sexual characters and parasitism in roach (Rutilus rutilus L.)
Figure 2. Correlation between sperm longevity and spermatozoal velocity (r = 0.547, P = 0.019). The line is from linear regression (y = 0.43x + 28.7).
Figure 1 in Sperm quality, secondary sexual characters and parasitism in roach (Rutilus rutilus L.)
Figure 1. Mean and SE of sperm longevity and spermatozoal velocity among Rutilus rutilus males with different degrees of ornamentation: (0) no breeding tubercles or very few or very small tubercles, smooth skin; (1) breeding tubercles clearly found, slightly or moderately rough skin; (2) many large tubercles, rough skin. Male groups which differed statistically from each other are denoted with different letters.
Data from: The large X-effect on secondary sexual characters and the genetics of variation in sex comb tooth number in Drosophila subobscura
Open the record for dataset details and reuse information.
Data from: The genetics of primary and secondary sexual character trade-offs in a horned beetle
When structures compete for shared resources, this may lead to acquisition and allocation trade-offs so that the enlargement of one structure occurs at the expense of another. Among the studies of morphological trade-offs, their importance has been demonstrated primarily through experimental manipulations and comparative analyses. Relatively, a few studies have investigated the underlying genetic basis of phenotypic patterns. Here, we use a half-sibling breeding design to determine the genetic underpinnings of the phenotypic trade-off between head horns and the male copulatory organ or aedeagus that has been found in the dung beetle Onthophagus taurus. Instead of the predicted negative genetic covariance among characters that trade-off, we find positive genetic covariance between absolute horn and aedeagus length and zero genetic covariance between relative horn and aedeagus length. Therefore, although the genetic covariance between absolute horn and aedeagus length would constrain the independent evolution of primary and secondary sexual characters in this population, there was no evidence of a trade-off. We discuss alternative hypotheses for the observed patterns of genetic correlation between traits that compete for resources and the implications that these have for selection and the evolution of such traits.
FIGURE 16 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 16. Seira mantis sp. n., tibia of the male first leg.
FIGURE 15 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 15. Seira mantis sp. n., femur of the male first leg.
FIGURE 10 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 10. Seira mantis sp. n., habitus.
FIGURE 3 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 3. Seira raptora sp. n., left eye patch, small lenses G and H; SEM 1300x.
FIGURE 7 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 7. Seira raptora sp. n., tibia of the male right leg; SEM 500x.
FIGURE 2 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 2. Seira raptora sp. n., raptorial prolegs; SEM 155x, bar lenght 100 m.
FIGURE 1 in Two Seira Lubbock 1869 (Collembola, Arthropleona, Entomobryidae) new to science, with remarkable secondary sexual characters
FIGURE 1. Seira raptora sp. n., habitus; SEM 165x, bar lenght 100 m.
Figure 1 from: Perger R (2013) Did the genus Parandrocephalus Heller, 1916 (Coleoptera, Cerambycidae, Callichromatini) cross the Wallace line? The taxonomic status of Parandrocephalus blairi Bentanachs & Vives 2009 and a new subgenus of Hexamitodera Heller, 1896, with notes on convergent evolution and secondary sexual characters. ZooKeys 293: 77-89. https://doi.org/10.3897/zookeys.293.5133
Figure 1 - Dorsal view habitus, scale bars 10 mm A Parandrocephalus eversor, male, Malaysia, Cameron Highlands, Kampong Rajah B idem, female C Hexamitodera (Sulcognatha) blairi comb. n., male, Indonesia, Central Sulawesi, Puncak D idem, female, allotype, Indonesia, Sulawesi, Palolo Palu E Hexamitodera semivelutina, male, Sulawesi F, idem, female, holotype, Indonesia, North Sulawesi.
Figure 3 from: Perger R (2013) Did the genus Parandrocephalus Heller, 1916 (Coleoptera, Cerambycidae, Callichromatini) cross the Wallace line? The taxonomic status of Parandrocephalus blairi Bentanachs & Vives 2009 and a new subgenus of Hexamitodera Heller, 1896, with notes on convergent evolution and secondary sexual characters. ZooKeys 293: 77-89. https://doi.org/10.3897/zookeys.293.5133
Figure 3 - Dorsal view male mandibles; light grey, dorsal surface; dark grey, ventral external concavity; black, interior surface; a, dorso-lateral border; mandibles of A and D are drawn from specimens that were digitally scaled until they had similar body length A Hexamitodera semivelutina B, C hypothetical intermediate forms D Hexamitodera (Sulcognatha) blairi comb. n. E Parandrocephalus eversor.
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Allen Brain Atlas
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OpenNeuro
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