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513 results for “dragonflies”
FIGURE 3 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 3. Gynacantha anandmati Paratype female: (a) dorsal view of head; (b) lateral habitus; (c) dorsal habitus; (d) forewing and hindwing; (e) dorsal view of abdominal end segments; (f) lateral view of abdominal end segments.
FIGURE 1 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 1. Gynacantha anandmati Holotype male: (a) anterior view of head; (b) dorsal view of head; (c) dorsal habitus; (d) forewing and hindwing; (e) lateral habitus.
FIGURE 2 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 2. Gynacantha anandmati Holotype male: (a) dorsal view of S3; (b) ventral view of hamuli; (c) dorsal view of caudal appendages; (d) lateral view of caudal appendages; (e) close up of dorsal view of cerci tip; (f) close up of lateral view of cerci tip.
FIGURE 10 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 10. Gynacantha anandmati in situ. (a–c) male, 6.viii.2022, Badlapur, Maharashtra, India; (d) male [collected specimen], 19.viii.2022, Badlapur, Maharashtra, India.
FIGURE 6 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 6. Caudal appendages of male Gynacantha spp. in dorsal views. (a) G. albistyla; (b) G. anandmati; (c) G. bayadera; (d) G. chaplini; (e) G. dravida; (f) G. khasiaca; (g) G. millardi; (h) G. subinterrupta (not to scale).
FIGURE 7 in Gynacantha anandmati, a new species of dragonfly (Odonata: Anisoptera: Aeshnidae) from Maharashtra, India
FIGURE 7. Postfrons of Gynacantha spp. in dorsal views. (a) G. albistyla; (b) G. anandmati; (c) G. bayadera; (d) G. chaplini; (e) G. dravida; (f) G. khasiaca; (g) G. millardi; (h) G. subinterrupta (not to scale).
Data For: Ornamentation diversified faster than eco-morphology across Nearctic dragonflies
<p>A major goal of biology is to understand the origins and maintenance of phenotypic differences between closely related species. Eco-morphology and ornamentation are two phenotypic dimensions along which co-existing species often diverge, yet theory makes contrasting predictions about how these phenotypes diversify relative to each other. Some theory predicts that intense, idiosyncratic sexual selection will cause more pronounced divergence in ornamentation than in eco-morphology. Other theory predicts that the ability of condition-dependent ornaments to signal local specialization will result in different species evolving similar ornaments but very divergent eco-morphology. Here, we evaluated these conflicting predictions in Nearctic Libelluloidea dragonflies by testing if the diversification of a condition-dependent ornament, male wing melanization, was slower and less pronounced between closely related species than the diversification of two key eco-morphological traits, body size and relative wing size. Our results show that male wing melanization evolved much faster than either body size or relative wing size. Furthermore, in contrast to the patterns for either eco-morphological trait, the best-supported models of diversification in male wing melanization indicate that the majority of divergence arose between the most closely related species. These results reveal that the primary axis of divergence between closely related Libelluloidea dragonflies is ornamentation rather than eco-morphology. Our study therefore suggests that evolutionary responses to disparate reproductive demands may be fundamental to the persistence and co-existence of closely related species.</p>
Dragonfly-M Early Feasibility Study
ClinicalTrials.gov study NCT04528576. IPD Sharing: NO. Countries: 1. Publications: 1.
Safety and Effectiveness Study of Dragonfly System for Degenerative Mitral Regurgitation
ClinicalTrials.gov study NCT04734756. IPD Sharing: NO. Countries: 1. Publications: 1.
Data from: Dragonflies use underdamped pursuit to chase conspecifics
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Data for: Larval habitats impose trait-dependent limits on the direction and rate of adult evolution in dragonflies
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Data from: Phylogeny affects host's weight, immune response and parasitism in damselflies and dragonflies
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DragonDrop: passive dynamics and control strategies of aerial righting in the dragonfly
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Data from: Colour lightness of dragonfly assemblages across North America and Europe
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Data from: Evolutionary processes, dispersal limitation and climatic history shape current diversity patterns of European dragonflies
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Complexity within an oil palm monoculture: the effects of habitat variability and rainfall on adult dragonfly (Odonata) communities.
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Data from: Genetic differentiation in the boreal dragonfly Leucorrhinia dubia in the Palearctic region
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Prolonged flow intermittency undermines the habitat potential of forested landscapes for a stream-dwelling dragonfly
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Data for: Sex-specific ornament evolution is a consistent feature of climatic adaptation across space and time in dragonflies
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Data from: Sexual dichromatism in wing pigmentation of New World dragonflies follows Rensch’s rule
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