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508 results for “natural evolution”
Figs. 1–8. Body structures. 1 in Classification, Natural History, and Evolution of the Korynetinae (Coleoptera: Cleridae). Part III. The African GeneraEctospinulaOpitz, New Genus, andProsymnusLaporte
Figs. 1–8. Body structures. 1) Ectospinula graduata, metathoracic wing. Antennae: 2) Necrobia rufipes; 3) E. graduata; 4) Prosymnus rudis. Terminal labial palpomere: 5) E. graduata; 6) P. rudis. Abdominal sternites: 7) P. rudis; 8) Prosymnus mulleri.
Figs. 19–22 in Classification, Natural History, and Evolution of the Korynetinae (Coleoptera: Cleridae). Part III. The African GeneraEctospinulaOpitz, New Genus, andProsymnusLaporte
Figs. 19–22. Ectospinula and Prosymnus species, habitus. 19) E. graduata; 20) P. adustus; 21) P. arsus;
Figs. 23–26. Prosymnus species, habitus. 23 in Classification, Natural History, and Evolution of the Korynetinae (Coleoptera: Cleridae). Part III. The African GeneraEctospinulaOpitz, New Genus, andProsymnusLaporte
Figs. 23–26. Prosymnus species, habitus. 23) P. brevipenis; 24) P. livens; 25) P. mulleri; 26) P. rudis.
Figs. 9–14 in Classification, Natural History, and Evolution of the Korynetinae (Coleoptera: Cleridae). Part III. The African GeneraEctospinulaOpitz, New Genus, andProsymnusLaporte
Figs. 9–14. Body structures of Prosymnus rudis. 9) Head, dorsal view; 10) Mouthparts, ventral view; 11) Head, ventral view; 12) Pronotum; 13) Posterior pronotal margin; 14) Pronotal hind angle.
Figs. 92–97. Pujoliclerus species, habitus. 92 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 92–97. Pujoliclerus species, habitus. 92) P. helvinus; 93) P. maracayensis; 94) P. modestus; 95) P. bilineatus;
Figs. 76–91. Pujoliclerus species, aedeagi. 76 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 76–91. Pujoliclerus species, aedeagi. 76) P. helvinus; 77) P. bilineatus; 78) P. calceatus; 79) P. corumba; 80) P. flavolimbatus; 81) P. ovatus (tegmen only); 82) P. wappesi; 83) P. gilvus; 84) P. hermani; 85) P. casselorum; 86) P. catarina (phallus only); 87) P. argus; 88) P. aspigalbus; 89) P. flora; 90) P. posticalis; 91) P. pallidus.
Figs. 48–61. Pujoliclerus species, pronota. 48 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 48–61. Pujoliclerus species, pronota. 48) P. helvinus; 49) P. maracayensis; 50) P. modestus; 51) P. bilineatus; 52) P. calceatus; 53) P. corumba; 54) P. flavolimbatus; 55) P. ovatus; 56) P. wappesi; 57) P. amplus; 58) P. flavoapicalus; 59) P. gilvus; 60) P. hermani; 61) P. orellana.
Figs. 39–47. Pujoliclerus species, antennae. 39 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 39–47. Pujoliclerus species, antennae. 39) P. macilentus; 40) P. megalus; 41) P. argus; 42) P. aspigalbus;
Figs. 104–109. Pujoliclerus species, habitus. 104 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 104–109. Pujoliclerus species, habitus. 104) P. orellana; 105) P. oxinus; 106) P. alajuela; 107) P. megacavus;
Figs. 21–38. Pujoliclerus species, antennae. 21 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 21–38. Pujoliclerus species, antennae. 21) P. helvinus; 22) P. maracayensis; 23) P. bilineatus; 24) P. calceatus; 25) P. corumba; 26) P. ovatus; 27) P. wappesi; 28) P. amplus; 29) P. flavoapicalus; 30) P. gilvus; 31) P. hermani; 32) P. alajuela; 33) P. orellana; 34) P. megacavus; 35) P. oxinus; 36) P. alboordinus; 37) P. apolegmus; 38) P. catarina.
Figs. 13–16. Pujoliclerus casselorum. 13 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 13–16. Pujoliclerus casselorum. 13) Head, frontal view; 14) Head and mouthparts, ventral view; 15) Gular region; 16) Funicular antennomeres.
Figs. 116–120. Pujoliclerus species, habitus. 116 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 116–120. Pujoliclerus species, habitus. 116) P. opsus; 117) P. pallidus; 118) P. ostrinus; 119) P. corumba;
Figs. 17–20. Pujoliclerus casselorum. 17 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 17–20. Pujoliclerus casselorum. 17) Antenna; 18) Protarsus; 19) Protarsal ungues; 20) Elytron.
Figs. 98–103. Pujoliclerus species, habitus. 98 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 98–103. Pujoliclerus species, habitus. 98) P. ovatus; 99) P. wappesi; 100) P. amplus; 101) P. flavoapicalus;
Figs. 110–115. Pujoliclerus species, habitus. 110 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 110–115. Pujoliclerus species, habitus. 110) P. catarina; 111) P. macilentus; 112) P. megalus; 113) P. argus;
Figs. 62–75. Pujoliclerus species, pronota. 62 in Classification, Natural History, and Evolution of the Checkered Beetle GenusPujoliclerusPic (Coleoptera: Cleridae: Peloniinae)
Figs. 62–75. Pujoliclerus species, pronota. 62) P. oxinus; 63) P. alajuela; 64) P. megacavus; 65) P. alboordinus; 66) P. pallidus; 67) P. apolegmus; 68) P. catarina; 69) P. macilentus; 70) P. megalus; 71) P. argus; 72) P. aspigalbus; 73) P. flora; 74) P. posticalis; 75) P. ostrinus.
Data from: Correlation of shell phenotype and local environment suggests a role for natural selection in the evolution of Placostylus snails
The giant edible Placostylus snails of New Caledonia occur across a wide range of environmental conditions, from the dry southwest to the wetter central and northeastern regions. In large, slow-moving animals such as Placostylus, speciation could be assumed to be largely driven by allopatry and genetic drift as opposed to natural selection. We examined variation in shell morphology using geometric morphometrics and genetic structure within two species of Placostylus (P. fibratus, P. porphyrostomus), to determine the drivers of diversity in this group. Despite the current patchy distribution of snails on New Caledonia, both mtDNA and nuclear SNP data sets (>3000 loci) showed weak admixing between populations and species. Shell morphology was concordant with the genetic clusters we identified and had a strong relationship with local environment. The genetic data, in contrast to the morphological data, did not show concordance with climatic conditions, suggesting the snails are not limited in their ability to adapt to different environments. In sympatry, P. fibratus and P. porphyrostomus maintained genetic and morphological differences, suggesting a genetic basis of phenotypic variation. Convergence of shell shape was observed in two adjacent populations that are genetically isolated but experience similar habitat and climatic conditions. Conversely, some populations in contrasting environments were morphologically distinct although genetically indistinguishable. We infer that morphological divergence in the Placostylus snails of New Caledonia is mediated by adaptation to the local environment.
Data from: Ontogeny can provide insight into the roles of natural and sexual selection in cricket cuticular hydrocarbon evolution
<p>The often complex cocktails of hydrocarbon compounds found on the cuticles of insects can serve both naturally and sexually selected functions, contributing to an individual's ability to withstand water loss and attract mating partners. However, whether natural and sexual selection act synergistically or antagonistically on a species' cuticular hydrocarbon (CHC) profile remains unclear. Here we examined the ontogeny of the CHC profile in a species of cricket Teleogryllus oceanicus while manipulating humidity during development. We predicted that juvenile crickets should produce only those compounds that contribute to desiccation resistance, while those compounds contributing specifically to male attractiveness should be produced only at sexual maturity. Further, if attractive CHCs come at a cost to desiccation resistance as predicted by some models of sexual selection, then males reared under low humidity should be constrained to invest less in attractive CHCs. Crickets reared under low humidity produced more long chained methyl branched alkanes, alkenes and alkadienes than did crickets reared under high humidity. The abundance of n-alkanes was unaffected by humidity treatment. Sexual dimorphism in the CHC profile was not apparent until adult emergence and became exaggerated 10 days after emergence when crickets were sexually mature. Males produced more of the same compounds that were increased in both sexes under low humidity, but the humidity treatment did not interact with sex in determining CHC abundance. The data suggest that CHC profiles which protect crickets from desiccation might have synergistic effects on male attractiveness, as there was no evidence to suggest males trade-off a CHC profile produced in response to low humidity for one associated with sexual signalling.</p>
Dataset from Nature Catalysis paper: Unriddling the role of alkali metal cations and Pt-surface hydroxide in alkaline hydrogen evolution reaction
<p>Dataset of the article "Unriddling the role of alkali metal cations and Pt-surface hydroxide in alkaline hydrogen evolution reaction" accepted in Nature Catalysis.</p> <p>The optimized geometries (in VASP format) and full 100-ps AIMD trajectories (in xyz format) of Pt(111)/water interface with alkali metal cations (Li+, Na+, K+) and with or without surface *OH.</p>
Leafcutter ants of the genus Atta in the Insects Collection at the Field Museum of Natural History. The field data on the attached tags are transcribed for entry into databases such as AntWeb and the Global Biodiversity Information Facility. Photograph: Matthew Nelsen. in The Evolution of Natural History Collections
Leafcutter ants of the genus Atta in the Insects Collection at the Field Museum of Natural History. The field data on the attached tags are transcribed for entry into databases such as AntWeb and the Global Biodiversity Information Facility. Photograph: Matthew Nelsen.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.