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164 results for “Brazilian Atlantic rainforest”
FIGURE 1–11 in Two new species of Australopericoma Vaillant (Diptera: Psychodidae: Psychodinae) from the Brazilian Atlantic Rainforest
FIGURE 1–11. Australopericoma onofrei sp. nov. (1) head, anterior; (2) head, posterior; (3) base of antenna: scape, pedicel and four basal flagellomeres; (4) Flagellomeres 9–14; (5) palpus; (6) wing; (7) male terminalia: epandrium, cerci, epiproct and hypoproct; (8) hypandrium, gonocoxites, gonostyli and aedeagus, dorsal; (9) male terminalia, ventral; (10) Base of gonocoxite; (11) Gonocoxal apodeme. (Abbreviations: aed = aedeagus, pm = paramere, udp = unsclerotized dorsal area between the parameres).
Morphological variation in the Vriesea procera complex (Bromeliaceae, Tillandsioideae) in the Brazilian Atlantic Rainforest, with recognition of new taxa
The family Bromeliaceae is essentially Neotropical, with high endemism and diversity in the Atlantic Rainforest Domain. Species circumscription is a major problem in the family systematics, especially in the most diverse genera. Species of the Vriesea procera complex, which occur in forests and restinga (coastal vegetation) along the South American Atlantic coast from Venezuela to southern Brazil, share the same basic vegetative and reproductive morphological patterns. However, they vary widely in the number and position of inflorescence branches as well as in the dimensions, position, and shape of the leaves and flowers in different populations. Here we aimed (i) to evaluate the morphological variation in the V. procera complex, through morphometric analyses of natural populations along the Brazilian Atlantic Rainforest; and (ii) to determine the taxonomic relationships among these species, establishing the validity and the limits of variation of the taxa through taxonomic treatment. Fourteen natural populations, 271 individuals and 36 morphometric variables were analyzed. Kruskal-Wallis tests and discriminant analyses were conducted to test statistical differences between previously established groups. Of an original three species and three varieties, our data allowed us to recognize six species, including three new taxa and one new name and status. The resulting taxa are distinguished by the inflorescence and leaf sizes and especially by floral characteristics such as the length of bracts, sepals, petals, stamens, and pistils, besides the petal apex posture and relative position of the stamen during anthesis. Recognition of cryptic species under the names V. procera and V. neoglutinosa is an important step toward a better understanding of the biodiversity of the Brazilian Atlantic Rainforest.
FIGURES 1–7 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 1–7. Ybytyramoan praeclarum sp. nov. head. 1, frontal. 2, ventral. 3, dorsal. 4, lateral. 5, posterior. 6, occipital. 7 tentoria detail, frontal. Scale bar 1–7 = 1,0 mm.
FIGURES 46-47. 46 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 46-47. 46. Ybytyramoan diasi sp. nov., head, frontal view. White arrows: antennifer processes, black arrow: medial indentation of labral anterior margin. 47. Ybytyramoan praeclarum sp. nov., thorax, ventral. Black arrow: metasternal keel. Scale bars 46 = 0.5 mm, 47 = 1 mm.
FIGURES 16–25 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 16–25. Ybytyramoan praeclarum sp. nov. 16–17, habitus 16, dorsal. 17, ventral. 18, pronotum, dorsal. 19, abdomen, ventral. Note the lanterns shape. 20, pygidium, dorsal. 21, abdominal sternum VIII, ventral. 22, syntergite, dorsal, abdominal sternum IX, ventral. 23–25 aedeagus. 23, dorsal. 24, ventral. 25, lateral. Scale bars 16–19 = 1,0 mm, 20–25 = 0,5 mm.
FIGURES 36–45 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 36–45. Ybytyramoan monteirorum sp. nov. 36–37, habitus 36, dorsal. 37, ventral. 38, pronotum, dorsal. 39, abdomen, ventral. Note the lanterns shape. 40, pygidium, dorsal. 41, abdominal sternum VIII, ventral. 42, syntergite, dorsal, abdominal sternum IX, ventral. 43–45 aedeagus. 43, dorsal. 44, ventral. 45, lateral. Scale bars 36–39 = 1,0 mm, 40–45 = 0,5 mm.
FIGURES 26–35 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 26–35. Ybytyramoan diasi sp. nov. 26–27, habitus 26, dorsal. 27, ventral. 28, pronotum, dorsal. 29, abdomen, ventral. Note the lanterns shape. 30, pygidium, dorsal. 31, abdominal sternum VIII, ventral. 32, syntergite, dorsal, abdominal sternum IX, ventral. 33–35 aedeagus. 33, dorsal. 34, ventral. 35, lateral. Scale bars 26–29 = 1,0 mm, 30–35 = 0,5 mm.
FIGURES 13–15 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 13–15. Ybytyramoan praeclarum sp. nov. 13, wing. 14, mesoendosternite. 15, metaendosternite. Scale bars 13: 2 mm, 14–15 = 0,5 mm.
FIGURES 8–12 in Ybytyramoan, a new genus of fireflies (Coleoptera: Lampyridae, Lampyrinae, Photinini) endemic to the Brazilian Atlantic Rainforest, with description of three new species
FIGURES 8–12. Ybytyramoan praeclarum sp. nov. 8–10 prothorax. 8, pronotum, dorsal. 9 - prothorax, posterior. Note the proendosternite. 10, prosternum, ventral. 11–12, allinotum. 11, dorsal. 12, lateral. Scale bar 8–12 = 1,0 mm.
FIGURE 2A–C. A–B in A new species of Xystonotus Wolcott, 1900 (Acari, Hydrachnidia, Mideopsidae) from bromeliad phytotelmata in Brazilian Atlantic rainforest
FIGURE 2A–C. A–B Photographs of Xystonotus phytotelmaticola n. sp., male holotype: A = dorsal shield; B = ventral shield. C Photograph of Vriesea procera (Martius ex Schultes f.) Wittmack from the State Park of Ilha do Cardoso, São Paulo, Brazil.
FIGURE 1A–H. Xystonotus phytotelmaticola n in A new species of Xystonotus Wolcott, 1900 (Acari, Hydrachnidia, Mideopsidae) from bromeliad phytotelmata in Brazilian Atlantic rainforest
FIGURE 1A–H. Xystonotus phytotelmaticola n. sp., male holotype: A = dorsal shield; B = idiosoma, ventral view; C = palp, lateral view; D = palp, medial view (P-1 lacking); E = gnathosoma and chelicera; F = I–L-3–6; G = IV–L; H = ejaculatory complex. Scale bars = 100 µm.
FIGURE 1 in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 1. Illustration of Pabstiella klingelfusii. A. Habit. B. Flower. C. Perianth, with both views of one petal. D. Ovary, column and lip, lateral view. E. Lip, three-quarter view. F. Column, ventral view. Illustration by Nicolás Gutiérrez Morales from the holotype.
FIGURE 8 in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 8. Illustration of Pabstiella tortuosa. A. Habit. B. Flower and inflorescence. C. Perianth. D. Ovary, column and lip, lateral view. E. Expanded lip. F. Column, ventral view. Illustration by Nicolás Gutiérrez Morales from the holotype.
FIGURE 2 in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 2. Lankester Composite Dissection Plate of Pabstiella klingelfusii. A. Habit. B. Flower. C. Perianth, with both views of one petal. D. Ovary, column and lip, lateral view. E. Lip. F. Column, ventral view. G. Anther and pollinia. Photographs by Nicolás Gutiérrez Morales, from the holotype.
FIGURE 5 in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 5. Illustration of Pabstiella assisii. A. Habit. B. Flower in its natural position. C. Perianth, with both views of one petal. D. Ovary, column and lip, lateral view. E. Expanded lip, dorsal view. F. Expanded lip, ventral view. G. Column, ventral view. Illustration by Nicolás Gutiérrez Morales from the holotype.
FIGURE 10 in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 10. Lankester Composite Dissection Plate of Pabstiella tortuosa, a different color form. A. Habit. B. Flower. C. Dissected perianth. D. Ovary, column and lip, lateral view. E. Lip. F. Column, ventral view. G. Anther cap and pollinarium. Photographs by Nicolás Gutiérrez Morales from Toscano de Brito 3513 (unvouchered).
FIGURE 7. Vegetative and floral comparison. A. P. assisii B. P in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 7. Vegetative and floral comparison. A. P. assisii B. P. decurva. Photographs by Nicolás Gutiérrez Morales.
FIGURE 3. Pabstiella klingelfusii and similar morphological species. A. P. klingelfusii. B. P. hileiaensis. C. P in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 3. Pabstiella klingelfusii and similar morphological species. A. P. klingelfusii. B. P. hileiaensis. C. P. isabelae. Photographs by Nicolás Gutiérrez Morales.
FIGURE 11. A. Pabstiella aurantiaca. B. Pabstiella rhombilabia. C in Novelties and nomenclatural notes in Pabstiella (Orchidaceae) from the Brazilian Atlantic Rainforest of Bahia and Espírito Santo
FIGURE 11. A. Pabstiella aurantiaca. B. Pabstiella rhombilabia. C. Pabstiella crenata. Photos by Nicolás Gutiérrez Morales.
Does stress mess with rodents' heads? Influence of habitat availability and genetic factors in mandible fluctuating asymmetry (FA) in South American water rats (Nectomys squamipes, Sigmodontinae) from Brazilian Atlantic rainforest remnants
<p>Loss of developmental stability can lead to deviations from bilateral symmetry (i.e. Fluctuating Asymmetry -FA), and is thought to be caused by environmental and genetic factors associated with habitat loss and stress. Therefore, levels of FA might be a valuable tool to monitor wild populations if FA serves an indicator of exposure to stress due to impacts of habitat loss and fragmentation. In studies examining FA and habitat fragmentation, FA levels are often explained by loss of genetic variation, though few studies have addressed FA's use as indicator of environmental impact. Here we investigated whether habitat loss, genetic variation and/or inbreeding affect the developmental instability in Brazilian Atlantic rainforest populations of a Neotropical water rat (Nectomys squamipes). We sampled individuals from eight forest remnants with different amounts of available habitat and assessed FA levels with geometric morphometric techniques using adult mandibles. We used observed heterozygosity (Ho) and inbreeding coefficient (Fis), from seven microsatellite markers, as a proxy of genetic variation at individual and population levels. Populations were not significantly different for shape or size FA levels. Furthermore inter-individual variation in both shape and size FA levels, as well as inter-populational differences in size FA levels, were best explained by chance. However, habitat availability was negatively associated with both inter-populational variance and average shape FA levels. This association was stronger in populations living in areas with less than 20% of habitat available, which presented higher variance and higher average of FA, suggesting that Nectomys squamipes might have a tolerance threshold to small availability of habitat. Our work was one of the first to use FA to address environmental stress caused by reduced habitat availability in small mammal populations from a Neotropical biome. We suggest that shape FA might serve as a conservation tool to monitor human impact on natural animal populations.</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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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.