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1,650 results for “Gecko”
FIGURE 2 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 2. General ventral (top) and dorsal (bottom) views of the preserved adult male holotype of Gehyra wongchan sp. nov. Photographs by M. Sumontha.
FIGURE 13 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 13. Live adult Gehyra mutilata from Kaeng Krachan District, Phetchaburi Province, northern peninsular Thailand (top), and from Muang District, Ranong Province, southern Thailand (bottom). Photographs by M. Sumontha.
FIGURE 1 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 1. Live adult male holotype (CUMZ-R-2598) of Gehyra wongchan sp. nov. in situ before capture. Photograph by M. Sumontha.
FIGURE 8 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 8. General dorsal (top) and ventral (bottom) views of a preserved adult female paratype of Gehyra angusticaudata (FMNH 178204; field nr 1034) from Chonburi Province, southeastern Thailand. Tail original. Photographs by J. Mata (FMNH).
FIGURE 12 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 12. Live adult Gehyra lacerata from Sri Racha District, Chonburi Province, southeastern Thailand (top), and from Hua Hin District, Prachuap Khiri Khan Province, northern peninsular Thailand (bottom). Photographs by M. Sumontha.
FIGURE 4 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 4. Dorsal views of the preserved paratypes of Gehyra wongchan sp. nov.: CUMZ-R-2599 (A), CUMZ-R-2611 (B), CUMZ-R-2612 (C) and CUMZ-R-2613 (D). Not to scale. Photographs by M. Sumontha.
FIGURE 7 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 7. General dorsal (top) and ventral (bottom) views of the preserved adult male holotype of Gehyra angusticaudata (FMNH 178203; field nr 1035) from Chonburi Province, southeastern Thailand. Tail original. Photographs by J. Mata (FMNH).
FIGURE 15 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 15. Biotope of Gehyra wongchan sp. nov. at the type-locality (entrance of Khao Chan Cave). Photograph by N. Anurakpongsathorn. Note the dramatic anthropic alteration of the natural biotope.
FIGURE 3 in A new Four-clawed Gecko from limestone hills in Lopburi Province, central Thailand (Squamata, Gekkonidae: Gehyra)
FIGURE 3. Right view of the head of the preserved holotype of Gehyra wongchan sp. nov. Photograph by M. Sumontha.
FIGURE 11 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 11. Typical environments of the type localities of (A and B) Phyllopezus diamantino sp. nov. in the municipality of Mucugê, Bahia State and (C and D) P. selmae sp. nov. in the municipality of Boca da Mata, Alagoas State, Northeastern Brazil.
FIGURE 10 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 10. Coloration in life of dorsal view of the body and dorsolateral view of head of (A) Phyllopezus diamantino sp. nov. [topotype (unvouchered specimen)] and (B) Phyllopezus selmae sp. nov. [paratype (MHNUFAL 16198)].
FIGURE 9 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 9. Scheme of the arrangement of scales in the gular region of Phyllopezus species. (A) P. periosus [based on CHUFPB 1936], (B) P. lutzae [based on CHUFPB 19518], (C) P. maranjonensis [based on ZFMK 84997], (D) P. pollicaris stricto sensu [ZSM 165/0/1, paralectotype], (E) P. przewalskii [based on SMF 100496], (F) P. heuteri [based on SMF 100494], (G) Phyllopezus diamantino sp. nov. [based on MZUSP 106770] and (H) Phyllopezus selmae sp. nov. [based on MHNUFAL 13481]. Figures D–F adapted of the photographs provided by Cacciali et al. (2018). Horizontal dashed gray line marks the posterior margin of the third infralabial scale. Scale bars = 3mm.
FIGURE 8 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 8. Coloration in life of Phyllopezus selmae sp. nov. (A) Holotype [MHNUFAL 13481], (B and C) paratypes [MHNUFAL 16198 and MHNUFAL 16199, respectively], (C) variation of juvenile coloration.
FIGURE 7 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 7. Holotype of Phyllopezus selmae sp. nov. (MHNUFAL 13481, adult female). A and B = Dorsal and ventral views of body; C = palm of hand; D = sole of the foot; E–G = dorsal, lateral and ventral views of head; H = auditory meatus; I = labial commissure; J = cloacal region; K = tubercles on the left side of the body; L = tubercles and dorsal scales; M = ventral scales. Scale bar = A and B (10mm), C–G and J (3mm).
FIGURE 5 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 5. Holotype of Phyllopezus diamantino sp. nov. (MZUSP 106770, adult female). A and B = dorsal and ventral views of body; C = palm of hand; D = sole of the foot; E–G = dorsal, lateral and ventral views of head; H = auditory meatus; I = labial commissure; J = cloacal region; K = tubercles and postcloacal pores on the left side of the body; L = tubercles and dorsal scales; M = ventral scales. Scale bar = A and B (10mm), C–G and J (3mm).
FIGURE 4 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 4. Principal Component Analysis (PCA; left) and Discriminant Function Analyzes (DFA; right) based on 13 meristic and 20 morphometric characteristics independently for (A–D) all lineages of Phyllopezus and (E–H) only the lineages of P. pollicaris complex occurring in northeastern Brazil.
FIGURE 3 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 3. (A) Summary results of Phyllopezus species delimitations based on 16S rRNA mitochondrial gene fragment using ABGD, bPTP and bGMYC models, respectively. Total genetic breaks found in each model. Abbreviations above nodes: lut. = P. lutzae, mar. = P. maranjonensis, per. = P. periosus, sp.1 = Phyllopezus sp.1, sp.2 = Phyllopezus sp.2, pol. VI = P. pollicaris VI, heu. = P. heuteri, prz. = P. przewalskii, pol. VI = P. pollicaris VI, pol. VII = P. pollicaris VII, and pol. VIII = P. pollicaris VIII. (B) Pair-to-pair genetic divergence densities indicating the most likely transition gap between intraspecific (left) and interspecific (right) genetic distances of Phyllopezus sequences using 347 bp of 16 SrRNA mitochondrial gene fragment. Phyllopezus pollicaris Clades numbering follow Werneck et al. (2012).
FIGURE 2 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 2. Phylogram obtained by the Bayesian Inference of the16S rRNA mitochondrial gene fragment (486 pb) of genus Phyllopezus. Posterior probabilities greater than 0.95 are indicated on the nodes. Phyllopezus pollicaris Clades I and IV–VIII follow the definitions by Werneck et al. (2012). No representatives of the Clades II and III were included due to the lack of 16S rRNA sequences.
FIGURE 1 in Two new species of geckos of the genus Phyllopezus Peters, 1878 (Squamata: Gekkota: Phyllodactylidae) from northeastern Brazil
FIGURE 1. Geographic distribution of genetic and morphological vouchers of Phyllopezus pollicaris complex in northeastern Brazil. (A) Phyllopezus pollicaris clades (following Werneck et al. [2012]) and new samples analyzed in this study; (B) expanded view of the known distribution of Phyllopezus sp.2 in the state of Alagoas, Brazil; (C) expanded view of the known distribution of Phyllopezus sp.1 in the state of Bahia, Brazil. Numbers near the points correspond to the municipalities of (1) Boca da Mata, (2) Quebrangulo, (3) Igaci, (4) Limoeiro de Anadia and (5) Coruripe, state of Alagoas, and (6) Mucugê, state of Bahia, Brazil. Stars indicate type localities (with available morphological and molecular data) of Phyllopezus sp.1 (purple) and Phyllopezus sp.2 (green). Locations indicated with diamond denote samples of Werneck et al. (2012) not included in this study due to the absence of 16S rRNA data. Transparent white area [gray in the inset South America map in (A)] corresponds to Brazilian dryopen biomes. Inset map: South America.
Does colour impact responses to images in geckos?
<p>Animals are exposed to different visual stimuli that influence how they perceive and interact with their environment. Visual information such as shape and colour can help the animal detect, discriminate and make appropriate behavioural decisions for mate selection, communication, camouflage, and foraging. In all major vertebrate groups, it has been shown that certain species can discriminate and prefer certain colours and that colours may increase the response to a stimulus. However, since colour is often studied together with other potentially confounding factors, it is still unclear what role colour plays in the perception of and attention to biologically relevant and familiar stimuli versus novel stimuli. In this study, we test whether colour influences the response that an animal has to an object, and if this influence – if any – changes depending on the object shown to the animal. We therefore assessed the response of three gecko species Correlophus ciliatus, Eublepharis macularius, and Phelsuma laticauda to familiar and novel objects presented as colour or grayscale images. Our results indicate that colour did not change the animal's response to any of the objects. Specifically, we found that while all species responded more often to the novel than to the familiar images, colour did not influence the response. We also found that the duration of interaction with images was significantly longer for the diurnal species, P. laticauda, than for the two nocturnal species, but this was again independent from colouration. Finally, no differences among sexes were observed within or across species. Our results indicate that geckos discriminate between 2D images of different content independent of colouration, suggesting that colouration may not increase detectability or intensity of the response. These results are essential for uncovering which visual stimuli produce a response in animals</p>
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Allen Brain Atlas
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