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125 results for “male dimorphism”
Figure 2 from: Baranek B, Kuba K, Bauder JAS, Krenn HW (2018) Mouthpart dimorphism in male and female wasps of Vespula vulgaris and Vespula germanica (Vespidae, Hymenoptera). Deutsche Entomologische Zeitschrift 65(1): 65-74. https://doi.org/10.3897/dez.65.23593
Figure 2 Mandibles and labrum (SEM, LM). A. Mandibles (ma) overlapping in repose in front of the clypeus (cl); co – compound eye, gl – glossa. B. Open mandibles (ma), labrum (lr) and glossa (gl) underneath (male wasp). C. Mandible of female (LM), short bristles and mola (mo). D. Mandible of male (LM), long bristles and inconspicuous inner teeth.
Figure 1 from: Baranek B, Kuba K, Bauder JAS, Krenn HW (2018) Mouthpart dimorphism in male and female wasps of Vespula vulgaris and Vespula germanica (Vespidae, Hymenoptera). Deutsche Entomologische Zeitschrift 65(1): 65-74. https://doi.org/10.3897/dez.65.23593
Figure 1 Head of Vespula germanica (LM). A. Female worker in frontal view; 1, 2, 3 measuments taken to compare head size. B. Male in frontal view. C. Female worker in lateral view. D. Male in ventral view; cl – clypeus, gl – glossa, lp – labial palpus, ma – mandible, mxp – maxillary palpus, pa – paraglossa.
Figures 1-6 in Couples in phoretic copulation, a tool for male-female association in highly dimorphic insects of the wasp genus Dissomphalus Ashmead (Hymenoptera: Bethylidae)
Figures 1-6. (1-3) Female of Dissomphalus simulatus from Bolivia: (1) habitus in lateral view; (2) head in dorsal view; (3) mesosoma in dorsal view. (4-6) Female of Dissomphalus mendicus from Brazil, Distrito Federal: (4) habitus in lateral view; (5) head in dorsal view; (6) mesosoma in dorsal view. Scale bars: 500 µm.
Data from: Evolution of sexually dimorphic pheromone profiles coincides with increased number of male-specific chemosensory organs in Drosophila prolongata
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Data from: Selection for costly sexual traits results in a vacant mating niche and male dimorphism
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Data from: Size-dependent selective mechanisms on males and females and the evolution of sexual size dimorphism in frogs
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Data from: Sexual selection on male size drives the evolution of male-biased sexual size dimorphism via the prolongation of male development
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Data from: Life-history differences favor evolution of male dimorphism in competitive games
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Data from: The evolution of male-biased sexual size dimorphism is associated with increased body size plasticity in males
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Data from: Field evidence challenges the often-presumed relationship between early male maturation and female-biased sexual size dimorphism
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Data from: It takes two: seasonal variation in sexually dimorphic weaponry results from divergent changes in males and females
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Data from: Correlated evolution of sexual dimorphism and male dimorphism in a clade of neotropical harvestmen
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Dimorphic H3K27 methylation guides germline or vegetative cell fate dichotomy in male gametophytes [RNA-seq]
GEO Series GSE162639. Arabidopsis thaliana. 18 samples. Type: Expression profiling by high throughput sequencing.
Data from: Coevolution of female and male genital components to avoid genital size mismatches in sexually dimorphic spiders
Background: In most animal groups, it is unclear how body size variation relates to genital size differences between the sexes. While most morphological features tend to scale with total somatic size, this does not necessarily hold for genitalia because divergent evolution in somatic size between the sexes would cause genital size mismatches. Theory predicts that the interplay of female-biased sexual size dimorphism (SSD) and sexual genital size dimorphism (SGD) should adhere to the 'positive genital divergence', the 'constant genital divergence', or the 'negative genital divergence' model, but these models remain largely untested. We test their validity in the spider family Nephilidae known for the highest degrees of SSD among terrestrial animals. Results: Through comparative analyses of sex-specific somatic and genital sizes, we first demonstrate that 99 of the 351 pairs of traits are phylogenetically correlated. Through factor analyses we then group these traits for MCMCglmm analyses that test broader correlation patterns, and these reveal significant correlations in 10 out of the 36 pairwise comparisons. Both types of analyses agree that female somatic and internal genital sizes evolve independently. While sizes of non-intromittent male genital parts coevolve with male body size, the size of the intromittent male genital parts is independent of the male somatic size. Instead, male intromittent genital size coevolves with female (external and, in part, internal) genital size. All analyses also agree that SGD and SSD evolve independently. Conclusions: Internal dimensions of female genitalia evolve independently of female body size in nephilid spiders, and similarly, male intromittent genital size evolves independently of the male body size. The size of the male intromittent organ (the embolus) and the sizes of female internal and external genital components thus seem to respond to selection against genital size mismatches. In accord with these interpretations, we reject the validity of the existing theoretical models of genital and somatic size dimorphism in spiders.
Whole-transcriptome microarray to identify sexually dimorphic RNA transcripts that are differentially expressed in disease-susceptible versus nonsusceptible CNS regions of male and female SJL mice
GEO Series GSE55718. Mus musculus. 24 samples. Type: Expression profiling by array.
Data from: Low siring success of females with an acquired male function illustrates the legacy of sexual dimorphism in constraining the breakdown of dioecy
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Data from: Coevolution of female and male genital components to avoid genital size mismatches in sexually dimorphic spiders
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Sexual dimorphism of the synovial transcriptome underpins greater PTOA disease severity in male mice following joint injury
GEO Series GSE271903. Mus musculus. 61 samples. Type: Expression profiling by high throughput sequencing.
Dimorphic H3K27 methylation guides germline or vegetative cell fate dichotomy in male gametophytes
GEO Series GSE162640. Arabidopsis thaliana. 40 samples. Type: Genome binding/occupancy profiling by high throughput sequencing; Expression profiling by high throughput sequencing.
Dimorphic H3K27 methylation guides germline or vegetative cell fate dichotomy in male gametophytes [ATAC-seq]
GEO Series GSE162638. Arabidopsis thaliana. 10 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
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International Brain Laboratory public data
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OpenNeuro
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