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631 results for “Galápagos”
FIGURE 2 in A new species of lava lizard (Iguanidae: Tropidurinae: Microlophus) from the Galápagos
FIGURE 2. Scatterplots of LD1 and LD2 generated by discriminant analyses performed on the morphometric (top) and meristic (bottom) variables recorded in this study for Microlophus lava lizards from Floreana and surrounding islets of Champion, Enderby and Gardner.
FIGURE 1 in A new species of lava lizard (Iguanidae: Tropidurinae: Microlophus) from the Galápagos
FIGURE 1. Phylogeny and haplotype networks of Galápagos lava lizards. Top: Phylogenetic tree (redrawn from Benavides et al. 2009) of species of Microlophus from the Galápagos and related continental species. Island of occurrence (islets excluded) is indicated in parentheses for Galápagos species; the western radiation is shown in red, and the new species described in this paper is in bold. The original tree was inferred through maximum-likelihood analyses of 56 terminals, including two from Floreana and one each from Gardner and Enderby islets, as well as 10 nuclear and four mitochondrial gene regions (Benavides et al. 2009). Bottom: Cytochrome b (Cytb) and NADH dehydrogenase subunit 2 (ND2) haplotype networks (redrawn from Benavides et al. 2009 and Torres-Carvajal et al. 2021, respectively) describing genealogical relationships among populations of lava lizards from Floreana and surrounding islets of Champion, Caldwell, Enderby, and Gardner. Black circles represent inferred haplotypes.
FIGURE 4 in A new species of lava lizard (Iguanidae: Tropidurinae: Microlophus) from the Galápagos
FIGURE 4. Head of the holotype (CAS 9428) of Microlophus slevini sp. nov. in dorsal (top), lateral (middle), and ventral (bottom) views. Photographs by Erica Ely. Scale bar: 5 mm.
FIGURE 5 in A new species of lava lizard (Iguanidae: Tropidurinae: Microlophus) from the Galápagos
FIGURE 5. Live adult female (A, B) and male (C, D) specimens of M. grayii from Floreana. Color in life between M. grayii and M. slevini sp. nov. is very similar. Photographs from Bioweb.bio.
Data from: Pleistocene island connectivity did not enhance dispersal or impact population size change in Galápagos geckos
<p>Patterns of biodiversity on remote archipelagos are largely shaped by intra-archipelago colonization followed by in situ diversification. Pleistocene sea-level fluctuations purportedly enhanced gene flow among terrestrial organisms by increasing connectivity during periods of lower sea level. Furthermore, changes in sea-level are hypothesized to impact population sizes as a result of fluctuations in island sizes. Here, we used genomic data to test the role of Pleistocene island connectivity on the diversification and demographics of leaf-toed geckos (Phyllodactylus) endemic to the Galápagos. Consistent with previous studies, we found that present diversity of Galápagos Phyllodactylus stems from three independent dispersal events. Contrary to the hypothesis of Pleistocene-driven diversification, we found no correspondence between lineage divergence, island ages, and island connectivity. Furthermore, we found no evidence of introgression, demographic modeling indicated that all species increased rapidly in effective population size between 20–150 kya, and these inferred demographic expansions were largely asynchronous and apparently unassociated with species or island age. Collectively these results indicate that more complex abiotic and/or biotic factors may better explain the recent demographic history of Phyllodactylus and underscore the need for additional population genomic studies of terrestrial taxa to understand the impact of past climate cycles on Galápagos island communities.</p>
Beryllium in rainwater (Galápagos)
<p>There are three sheets in the provided Excel document: the first contains daily precipitation data, the second includes measured meteoric 10-beryllium concentrations in precipitation, and the third presents calculated and normalized annual fluxes along with the coordinates of the study sites.</p>
Urbanization alters interactions between Darwin's finches and Tribulus cistoides on the Galápagos Islands
<p>Emerging evidence suggests that humans shape the ecology and evolution of species interactions. Islands are particularly susceptible to anthropogenic disturbance due to the fragility of their ecosystems; however, we know little about the susceptibility of species interactions to urbanization on islands. To address this gap, we studied how the earliest stages of urban development affect interactions between Darwin's finches and its key food resource, <i>Tribulus cistoides,</i> in three towns on the Galápagos Islands. We measured variation in mericarp predation rates, mericarp morphology, and finch community composition using population surveys, experimental manipulations, and finch observations conducted in habitats within and outside of each town. We found that both seed and mericarp removal rates were higher in towns compared to natural habitats. We also found that selection on mericarp size and defense differed between habitats in the survey and experimental populations, and that towns supported smaller and less diverse finch communities than natural habitats. Together, our results suggest that even moderate levels of urbanization can alter ecological interactions between Darwin's finches and <i>T. cistoides</i>, leading to modified natural selection on <i>T. cistoides </i>populations. Our study demonstrates that trophic interactions on islands may be susceptible to the anthropogenic disturbance associated with urbanization.</p> <p><i>Synthesis</i>: Despite containing the highest diversity in the world, studies of urbanization are lacking from the tropics. Our study identified signatures of urbanization on species interactions in a tropical island ecosystem and suggests that changes to the ecology of species interactions has the potential to alter evolution in urban environments.</p>
FIGURE 2 in A new species of the deepwater scorpionfish genus Phenacoscorpius (Teleostei: Scorpaenidae) from the Galápagos Islands
FIGURE 2. Preserved specimens of Phenacoscorpius mccoskeri n. sp.: A, lateral and B, dorsal views of KAUM–I. 104643, paratype, 77.9 mm SL; C, lateral and D, dorsal views of CAS 243875, paratype, 66.2 mm SL.
FIGURE 1 in A new species of the deepwater scorpionfish genus Phenacoscorpius (Teleostei: Scorpaenidae) from the Galápagos Islands
FIGURE 1. Preserved specimen of Phenacoscorpius mccoskeri n. sp. CAS 86551, holotype, 100.5 mm SL: A, lateral and B, dorsal views.
Fig. 149. Linyphiidae species. Left male palp. A, prolateral view. B, dorsal view. C, expanted retrolateral view. D in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 149. Linyphiidae species. Left male palp. A, prolateral view. B, dorsal view. C, expanted retrolateral view. D, lateral view. © J. Caudron.
Fig. 146. Zimiromus species. A-B, left male palp. A, ventral view. B, retrolateral view. C-D, head region. C, dorsal view D, frontal view. E in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 146. Zimiromus species. A-B, left male palp. A, ventral view. B, retrolateral view. C-D, head region. C, dorsal view D, frontal view. E, spinners. © M. Leclercq.
Fig. 139. Uloborus segregatus Gertsch, 1936. A-C, left male palp. A, retrolateral view. B, ventral view. C, prolateral view. D-E, female epigynum. D, ventral view. E in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 139. Uloborus segregatus Gertsch, 1936. A-C, left male palp. A, retrolateral view. B, ventral view. C, prolateral view. D-E, female epigynum. D, ventral view. E, cleared vulva. © M. Leclercq.
Fig. 137. Tmarus galapagosensis Baert, 2013. A in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 137. Tmarus galapagosensis Baert, 2013. A, female, lateral view. B-C, left male palp. B, ventral view. C, retrolateral view. D, cleared female vulva, spermathecae. E-F, female epigynum, ventral view. © M. Leclercq.
Fig. 147. Neomaso species. A in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 147. Neomaso species. A, left male palp, ventral view. B, female epigynum, ventral view. © J. Caudron.
Fig. 135 in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 135. Mecaphesa inclusa (Banks, 1902).. A-B, left male palp. A, ventral view. B, retrolateral view. C, female epigynum, ventral view. © M. Leclercq.
Fig. 138 in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 138. Goeldia obscura (Keyserling, 1878). A-B, left male palp. A, retrolateral view. B, prolateral view. C, tibia, dorsal view. D, female epigynum, ventral view. © M. Leclercq.
Fig. 136. Mecaphesa reddelli Baert, 2013. A-B, left male palp. A, ventral view. B, retrolateral view. C in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 136. Mecaphesa reddelli Baert, 2013. A-B, left male palp. A, ventral view. B, retrolateral view. C, female epigynum, ventral view. © M. Leclercq.
Fig. 148. Agyneta species. A-B, left male palp. A, retrolateral view. B, ventral view. C-E, female epigynum. C, lateral view. D, inner view. E in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 148. Agyneta species. A-B, left male palp. A, retrolateral view. B, ventral view. C-E, female epigynum. C, lateral view. D, inner view. E, ventral view. © J. Caudron.
Fig. 134. Theridiosoma sancristobalensis Baert, 2013. Female. A in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 134. Theridiosoma sancristobalensis Baert, 2013. Female. A, lateral view of abdomen. B, epigynum, ventral view. C, cleared vulva. © M. Leclercq.
Fig. 132 in Updated checklist, origin, distribution, literature and genital drawings of the spiders of the Galápagos Islands
Fig. 132. Tidarren sisyphoides (Walckenaer, 1842). A-B, right male palp. A, retrolateral view. B, ventral view. C-D, female epigynum. C, lateral view. D, ventral view. © J. Caudron.
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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.