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116 results for “agamid”
Fig. 8 in A new species of the genus Ceratophora Gray, 1835 (Reptilia: Agamidae) from a lowland rainforest in Sri Lanka, with insights on rostral appendage evolution in Sri Lankan agamid lizards
Fig. 8. Syntypes of Ceratophora aspera Günther, 1864 in lateral view: BMNH.1946.30.51 (female, above) and BMNH.1946.30.52 (male, below). Photo by Colin McCarthy (BMNH).
Fig. 3 in Youngest agamid lizards from Western Europe (Sierra de Quibas, Spain, late Early Pleistocene)
Fig. 3. Chronological synthesis of the latest Miocene, Pliocene, and Pleistocene records of the family Agamidae in Western Europe (data mainly from Delfino et al. 2008). The grey strips represent the two periods of extinction of Western and Central European herpetofauna during the Pliocene and Pleistocene (Bailon 1991; Blain 2005, 2009; Bailon and Blain 2007; Ivanov 2007). MN, Mammal Neogene Biozonation.
Fig. 2 in Youngest agamid lizards from Western Europe (Sierra de Quibas, Spain, late Early Pleistocene)
Fig. 2. Agamidae indet. from the late early Pleistocene of Sierra de Quibas, Murcia, southeastern Spain. A. IPHES QB-06-EC-H/1, right maxilla in lateral (A 1) and medial (A 2) views. B. IPHES QB-06-EC-H/2, left dentary in lateral (B 1) and medial (B 2) views. C. IPHES QB-06-EC-H/3, right dentary in lateral (C 1) and medial (C 2) views. D. IPHES QB-06-EC-H/6, trunk vertebra in dorsal (D 1), ventral (D 2), and posterior (D 3) views. E. IPHES QB-06-EC-H/7, anterior caudal vertebra in dorsal (E ), ventral (E ), anterior (E ), posterior (E ), and left lateral (E ) views.
Fig. 1 in Youngest agamid lizards from Western Europe (Sierra de Quibas, Spain, late Early Pleistocene)
Fig. 1. Map of Western Europe (A), the location of Quibas paleontological site (B), geological map of the Quibas area (C) (modified from Montoya et al. 1999, 2001).
Linked collectors and determiners for: Catalogue of type specimens of the agamid lizard genus Japalura s. l. (Squamata: Agamidae: Draconinae).
Natural history specimen data linked to collectors and determiners held within, "Catalogue of type specimens of the agamid lizard genus Japalura s. l. (Squamata: Agamidae: Draconinae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/0bb83022-19c6-4caf-9e03-9a5f5388154e">https://bionomia.net/dataset/0bb83022-19c6-4caf-9e03-9a5f5388154e</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/0bb83022-19c6-4caf-9e03-9a5f5388154e">https://gbif.org/dataset/0bb83022-19c6-4caf-9e03-9a5f5388154e</a>. Formatted as a Frictionless Data package.
FIG. 6. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 6. — H. ptyodactyli (cont.); A, macrogametocyte with more dilute ribosomal contents and nucleus with a conspicuous nucleolus; B, large concentrically structured mitochondria; C-G, Haemoproteus tarentolae from Tarentola mauritanica; C-D, whole view of microgametocyte containing osmiophilic bodies, with folded attenuated ends; E, gametocyte with dense ribosomal contents; F, part of microgametocyte showing lobate nucleus, phagosomal residue inclusions and mitochondria; G, extremely lobate gametocyte. Abbreviations: e, vacuole with phagosomal residues; er, endoplasmic reticulum and connected cisternae; fe, empty food vacuole; m, mitochondria; n, nucleus; nl, nucleolemma; nu, nucleolus; o, osmiophilic bodies; w, electron-lucent space. Scale bars: A-C, E-G, 1 µm; D, 0.5 µm.
FIG. 4. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 4. — H. oedurae (cont.); A, whole view of H. oedurae microgametocyte with three Golgi-like organelles and a few osmiophilic bodies; B-E, Haemoproteus ptyodactyli from Ptyodactylus hasselquistii; B, whole view of an apparently macrogametocyte with dense ribosomal contents; note small osmiophilic bodies; C, juvenile gametocyte with sub-pellicular arrays of microtubules; D, juvenile gametocytes exhibiting wall details (M, arrows) and cross sections of sub-pellicular microtubules; E, gametocyte showing reforming M3 (possibly also M2) (Mr) and large food vacuole. Abbreviations: e, vacuole with phagosomal residues; e', inclusion filled with electron-dense globules; fi, food vacuole; g, Golgi; M1, 2 and 3, parasite's outer, median and inner boundary membranes; m, mitochondria; n, nucleus; nu, nucleolus; o, osmiophilic bodies; t, tubular structures; tt, true microtubules; v, vacuole. Scale bars: A-C, E, 0.5 µm; D, 0.25 µm.
FIG. 1 in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 1. — Haemoproteus edomensis in erythrocytes of Agama stellio; A, macrogametocyte with dense ribosomal contents, showing large inclusion with phagosomal residues, mitochondria and a vacuole; B, macrogametocyte (with dense ribosomal contents) showing the compact nucleus, two adjacent golgi-like tubular structures, inclusions, one containing membranous vesicular residue (e) and the other electron dense deposit (ee); C, macrogametocyte with tail-like ending (arrows), containing a compact nucleus with large nucleolus, an inclusion with phagosomal residue, mitochondria and "trapezoid" organelle; D, higher magnification view for details of the boundary membranes; E, detailed view of boundary membrane accompanied beneath by er extension; F, higher magnified view of a macrogametocyte, with compact nucleus, containing a conspicuous nucleolus, next to which can be seen an aggregate of granular matrix (arrow head); the cytoplasm contains bundles of er, a "trapezoid" and residue inclusions; G, unit membrane-bound food vacuole; H, detail from a juvenile gametocyte, showing a slit between the two lamellae of M1 and a heavy deposit between M1 and M2 (arrow); I, juvenile gametocyte showing a bundle of tubular structures (within a cisterna) and an electron-dense M3 membrane. Abbreviations: e, vacuole with phagosomal residues; ee, inclusion with electron-dense deposit; e', inclusion filled with electron-dense material; er, endoplasmic reticulum and connected cisternae; fi, food vacuole; g, Golgi; M1, 2 and 3 parasite's outer, median and inner boundary membranes; m, mitochondria; n, nucleus; t, tubular structures; tr, "trapezoid organelle"; v, vacuole. Scale bars: A-C, F-H, 1 µm; D, 2.5 µm; E, I, 0.5 µm.
FIG. 2. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 2. — H. edomensis (cont.); A, enlarged view (macrogametocyte?) showing mitochondria, some with electron-dense deposit (open arrow), Golgi-like organelle, vacuoles with phagosomal residue, trapezoid body and inclusions of unknown nature; B, apparently juvenile stage with nucleus containing two (split) nucleoli, some endoplasmic reticulum is filled with electron-dense material (larger arrow), and M3 is also visible (smaller arrows), tubular structures are enclosed within an endoplasmic reticulum cisterna; C, view of tubulies inside cisternae; D, macrogametocyte with dense ribosomal contents, a compact nucleus and a Golgi-like organelle; E-F, Haemoproteus mackerrasi; E, H. mackerrasi gametocyte inside an erythrocyte of Heteronota binoei; F, H. mackerrasi in gut contents of Culex fatigans induced to engorge Heteronota binoei. Note loose, undulating lamina remaining of M1 membrane (arrows). Abbreviations: cy, cytostome; e, vacuole with phagosomal residues; ec, inclusion with crystalline deposit (hemozoin); g, Golgi; m, mitochondria; n, nucleus; nu, nucleolus; o, osmiophilic bodies; rer, rough endoplasmic reticulum; t, tubular structures; tr, "trapezoid organelle"; v, vacuole. Scale bars: 1 µm.
FIG. 5. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 5. — H. ptyodactyli (cont.); A, whole view of a macrogametocyte; note an inclusion of unknown entity, i, and sub-pellicular vacuoles, vi; B, juvenile gametocyte with conspicuous cytostome connected to food vacuole, with adjacent empty food vacuole (fe); C, folded microgametocyte (Mi) with lobated nucleus and numerous osmiophilic bodies, note its lower ribosomal content in comparison to the dense ribosomal content in the cytoplasm of the adjacent macrogametocyte (Ma); D, sector of a microgametocyte showing osmiophilic bodies connected by a ductule with the cell boundary zone (empty arrow - inclusion of unknown entity); E, cross section of a microgametocyte with numerous osmiophilic bodies. Abbreviations: cy, cytostome; e, vacuole with phagosomal residues; ec, inclusion with crystalline deposit (hemozoin); er, endoplasmic reticulum and connected cisternae; fi, food vacuole; g, Golgi; m, mitochondria; n, nucleus; o, osmiophilic bodies; tt, true microtubules; v, vacuole. Scale bars: A, B, D, 0.5 µm; C, 2 µm; E, 1 µm.
FIG. 3. — A-B, H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 3. — A-B, H. mackerrasi (cont.); A, enlarged view of intraerythrocytic H. mackerrasi; B, enlarged detail to show wall membranes of H. mackerrasi infecting an intrahepatic proerythrocyte; C-F; Haemoproteus oedurae, apparently microgametocyte stages, from Oedura castelnaui; C, general view; D, microgametocyte with a very large mitochondrion and a conspicuous Golgi-like organelle; E, anterior end, showing oblong osmiophilic bodies; F, detailed view of Golgi-like organelle. Abbreviations: ec, inclusion with crystalline deposit (hemozoin); er, endoplasmic reticulum and connected cisternae; g, Golgi; M1, 2 and 3, parasites' outer, median and inner boundary membranes; m, mitochondrion; n, nucleus; o, osmiophilic body. Scale bars: 0.5 µm.
FIG. 8. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 8. — H. tarentolae (cont.); A, juvenile gametocyte; B, another microgametocyte with the central electron-lucent space. Abbreviations: e, vacuole with phagosomal residues; fi, food vacuole; n, nucleus; o, osmiophilic bodies; w, electron-lucent space. Scale bars: 1 µm.
FIG. 7. — H in Fine structure of gametocytes in five species of Haemoproteus (Haemosporidia) from geckos and agamid lizards
FIG. 7. — H. tarentolae (cont.), a microgametocyte with central, large, electron-lucent space. Abbreviations: n, nucleus; o, osmiophilic bodies; w, electron-lucent space. Scale bar: 1 µm.
Data from: Are modern cryptic species detectable in the fossil record? A case study on agamid lizards
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Figure 4 in Diversity in Australia's tropical savannas: An integrative taxonomic revision of agamid lizards from the genera Amphibolurus and Lophognathus (Lacertilia: Agamidae)
Figure 4. Distribution of study species included in this study, compiled from museum records.
Figure 9 in Diversity in Australia's tropical savannas: An integrative taxonomic revision of agamid lizards from the genera Amphibolurus and Lophognathus (Lacertilia: Agamidae)
Figure 9. Holotype of Lophognathus horneri sp. nov. (NTM R16472).
Impacts of fungal disease on dyadic social interactions in a wild agamid lizard
<p><span>Emerging infectious fungal diseases are responsible for the extinction of myriad species across a range of phyla. As recently shown by the COVID-19 pandemic, social transmission can be key to disease spread, and in this context, humans are not alone in trying to be alone. In group-living species, individuals have been shown to use social behaviour to avoid infection; diseased individuals can isolate from the group, or healthy animals can avoid diseased conspecifics. However, to date, little is known about social behaviour as a mechanism to avoid fungal infection. In this study, we investigate the extent to which wild urban eastern water dragons (<em>Intellagama lesueurii</em>), a gregarious reptile, modify their social behaviour as a response to infection with a recently emerged infectious fungal disease, caused by the pathogen <em>Nannizziopsis barbatae</em>. Using individual data from a long-term study population inhabiting Roma Street Parkland in Brisbane's Central Business District (QLD, Australia) and focal sampling, we test whether dragons exhibit self-isolation and social distancing behaviours in the context of dyadic social approach events. Statistical analyses of data collected </span><span>from 633 observations of 123 unique individuals (78 non-diseased, 45 diseased) during 2020 – 2021 suggested that while the presence of the fungal disease had no effect on individuals' social behaviour, the severity of the fungal disease did significantly affect individuals' social behaviour. Specifically, we found that (i) diseased individuals were no less social than their non-diseased conspecifics, (ii) </span><span>non-diseased individuals did not avoid or spend less time with diseased conspecifics,</span><span> and (iii) models considering the severity of skin lesions caused by <em>Nannizziopsis barbatae, </em>instead of their presence or absence, suggested that individuals avoided more severely diseased conspecifics regardless of their own disease status</span><span>. </span><span> <span>These findings warrant further investigation, given the evidence that many species have displayed behavioural adaptations to disease, and the increasing risk posed by emerging infectious fungal diseases.</span></span></p>
The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism
<p><span>Dynamic colour change is widespread in ectothermic animals, but has primarily been studied in the context of background matching. For most species, we lack quantitative data on the extent of colour change across different contexts. It is also unclear whether and how colour change varies across body regions, and how overall sexual dichromatism relates to the extent of individual colour change. In this study, we obtained reflectance measures in response to different stimuli for males and females of six species of agamid lizards (<em>Agamidae</em>, sister family to <em>Chameleonidae</em>) comprising three closely related species pairs. We computed the colour volume in a lizard-vision colour space occupied by males and females of each species and estimated overall sexual dichromatism based on the area of non-overlapping male and female colour volumes. As expected, males had larger colour volumes than females, but the extent of colour change in males differed between species and between body regions. Notably, species that were most sexually dichromatic were not necessarily those in which males showed the greatest individual colour change. Our results indicate that the extent of colour change is independent of the degree of sexual dichromatism and demonstrate that colour change on different body regions can vary substantially even between pairs of closely related species.</span></p>
Impacts of fungal disease on dyadic social interactions in a wild agamid lizard
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The extent of rapid colour change in male agamid lizards is unrelated to overall sexual dichromatism
Open the record for dataset details and reuse information.
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