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40 results for “Trachemys”
Figure 1 in Helminth fauna of the invasive American red-eared slider Trachemys scripta in eastern Spain: potential implications for the conservation of native terrapins
Figure 1. Sampling localities of the American red-eared slider, Trachemys scripta in eastern Spain. (A) Protected wetland 'Marjal de Peñíscola'; (B) 'Cabanes-Torreblanca' Natural Park; (C) Protected Landscape 'Desembocadura del Mijares'; (D) Protected wetland 'Marjal de Gandía'; (E) Site of Community Importance 'Marjal de La Safor'.
Data and script files: Gene expression in response to estrone sulfate in Trachemys scripta
<p>Variation in developmental conditions can affect a variety of embryonic processes and shape a number of phenotypic characteristics that can affect offspring throughout their lives. This is particularly true of oviparous species where development typically occurs outside of the female, and studies have shown that traits such as survival and behavior can be altered by both temperature and exposure to steroid hormones during development. In species with temperature-dependent sex determination (TSD), the fate of gonadal development can be affected by temperature and by maternal estrogens present in the egg at oviposition and there is evidence that these factors can affect gene expression patterns. Here, we explore how thermal fluctuations and exposure to an estrogen metabolite, estrone sulfate, affect the expression of several genes known to be involved in sexual differentiation; <em>Kdm6b, Dmrt1, Sox9, FoxL2, </em>and <em>Cyp19A1</em>. We found that most of the genes responded to both temperature and estrone sulfate exposure, but that the responses to these factors was not identical in that estrone sulfate effects occur downstream of temperature effects. Our findings demonstrate that conjugated hormones such as estrone sulfate are capable of influencing temperature dependent pathways to potentially alter how embryos respond to temperature and highlight the importance of studying the interaction of maternal hormone and temperature effects.</p>
Fig. 2 in Camallanus emydidius n. sp. (Nematoda: Camallanidae) in Trachemys dorbigni (Dumeriĺ& Bibron, 1835) (Testudines: Emydidae) from Southern Brazil
Fig. 2. Lateral view of anterior extremity of Camallanus emydidius n. sp. cleared with lactophenol. The images show variation in the size of the median ridges situated between the dorsal and ventral groups (Bar = 100 Mm).
Fig. 4 in Camallanus emydidius n. sp. (Nematoda: Camallanidae) in Trachemys dorbigni (Dumeriĺ& Bibron, 1835) (Testudines: Emydidae) from Southern Brazil
Fig. 4. Female of Camallanus emydidius n. sp. cleared with lactophenol. A —Ventral view show the vulvar lip (Bar = 240 Mm). B — Lateral view show the vulvar lip (Bar = 260 Mm). C — Ventral view of tail, the arrow show the mucrons (Bar = 40 Mm).
Fig. 3 in Camallanus emydidius n. sp. (Nematoda: Camallanidae) in Trachemys dorbigni (Dumeriĺ& Bibron, 1835) (Testudines: Emydidae) from Southern Brazil
Fig. 3. Ventral view the male's tail of Camallanus emydidius n. sp. cleared with lactophenol. A — The arrow show the right spicule with extremity simple (Bar = 100 Mm). B — The arrows show the 2 pairs of ventral papillae near of cloaca, and the postcloacal papillae (Bar = 50 Mm).
Fig. 1. Camallanus emydidius n in Camallanus emydidius n. sp. (Nematoda: Camallanidae) in Trachemys dorbigni (Dumeriĺ& Bibron, 1835) (Testudines: Emydidae) from Southern Brazil
Fig. 1. Camallanus emydidius n. sp. (Nematoda: Camallanidae) parasite of Trachemys dorbigni (Testudines: Emydidae) from Southern Brazil. A — Lateral view of female (Bar = 100 Mm). B — Lateral view of female (Bar = 100 Mm). C — Ventral view the male's tail (Bar = 350 Mm). D — Ventral view of posterior extremity the male's tail (Bar = 50 Mm).
FIGURE 4 in Trachemys ornata or not ornata: Reassessment of a Taxonomic Revision for Mexican Trachemys
FIGURE 4. Trachemys from Northwestern Mexico showing the characteristic green/blue iris. A. Trachemys ornata from Sinaloa (Photo by JFP).; B. Trachemys ornata from Punta Raza, Nayarit (Photo by Paulino Ponce-Campos); C. Trachemys from Sinaloa also showing dorsal shell coloration (Photo by JFP).
FIGURE 2 in Trachemys ornata or not ornata: Reassessment of a Taxonomic Revision for Mexican Trachemys
FIGURE 2. RaxML tree showing phylogenetic relationships of Trachemys samples including true T. ornata and the T. "ornata" from the disjunct population in the Acapulco region. Numbers correspond to localities in Fig. 1 and specimens in the Appendix. Scale bar represents number of substitutions per site.
FIGURE 1 in Trachemys ornata or not ornata: Reassessment of a Taxonomic Revision for Mexican Trachemys
FIGURE 1. Map showing samples used in this study. Range maps are based on Legler and Vogt (2013) and the Turtle Taxonomy Working Group (2014) and should be considered approximate. Numbers correspond to samples analyzed for Fig. 2 and specimens in the Appendix. Specimens 35–38 are from beyond the southern limit of the map. Abbreviations: T. n. h. = T. nebulosa hiltoni; T. s. e. x T. s. s. = Intergrade zone for T. s. elegans and T. s. scripta
Figure 2 in Pets or predators? climate change and invasion risk of red-eared slider (Trachemys scripta elgans)
Figure 2. PCA-env for native and Indian climate for Trachemys scripta elegans. A) The green polygon represents nice unfilling, the blue polygon represents niche overlap, and the red polygon denotes nice expansion. The arrow indicates the niche centroid change. B) The correlation circle shows the relative contribution of different variables. C) and D) represent niche similarity and equivalency.
Figure 1 in Pets or predators? climate change and invasion risk of red-eared slider (Trachemys scripta elgans)
Figure 1. Predicted potential distribution of Trachemys scripta elegans under current and two future climate change scenarios.
Figure 3 in Pets or predators? climate change and invasion risk of red-eared slider (Trachemys scripta elgans)
Figure 3. Map showing species richness of native freshwater turtles at the sub-basin level in India.
Fig. 1 in Helminth's assemblage of Trachemys dorbigni (Testudines: Emydidae) in southern Brazil: implications of anthropogenic environments and host's genders
Fig. 1. Overall layout of the collection environments in the study of helminth assemblage of Trachemys dorbigni in southern Brazil: A, detail of the Centro Agropecuário da Palma (UFPel), rural area of CapÃo do LeÃo, State of Rio Grande do Sul, Brazil; B, detail of the urban Área of Pelotas, Rio Grande do Sul, Brazil. Source: extracted and modified the site Google® Earth (©2014 Google – Images ©2014 Digital Globe).
Data and script files: Gene expression in response to estrone sulfate in Trachemys scripta
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Data from: Keep numbers in view: Red-eared sliders (Trachemys scripta elegans) learn to discriminate relative quantities
<p><span>The ability to discriminate relative quantities, one of the numerical competences, is considered as an adaptive trait in uncertain environments. Besides humans, previous studies have reported this capacity in several non-human primates and birds.</span><span> Here, we test whether red-eared sliders (<em>Trachemys scripta elegans</em>) can </span><span>discriminate different relative quantities</span><span>. Subjects were first trained to distinguish different stimuli with food reward. Then, they were tested with novel stimuli pairs to demonstrate how they distinguished the stimuli. The r</span><span>esults show that most subjects can complete the initial training and use relative quantity rather than absolute quantity to make choices during testing phase. This study provides behavioural evidence of relative quantity</span> <span>discrimination in a reptile species, and suggests that such capacity may be widespread among vertebrates.</span></p>
Data from: Keep numbers in view: Red-eared sliders (Trachemys scripta elegans) learn to discriminate relative quantities
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FIGURE 2 in A quarter millenium of uses and misuses of the turtle name Testudo scabra: Identification of the type specimens of T. scabra Linnaeus 1758 (= Rhinoclemmys punctularia) and T. scripta Thunberg in Schoepff 1792 (= Trachemys scripta scripta)
FIGURE 2. Illustration from Lacépède (1788:161, pl. 10), showing his specimen of "La Raboteuse" referred to Testudo scabra L. This appears to show a specimen of Rhinoclemmys punctularia.
FIGURE 1 in A quarter millenium of uses and misuses of the turtle name Testudo scabra: Identification of the type specimens of T. scabra Linnaeus 1758 (= Rhinoclemmys punctularia) and T. scripta Thunberg in Schoepff 1792 (= Trachemys scripta scripta)
FIGURE 1. Illustrations from Seba (1734: pl. 79, figs. 1 and 2), showing his Testudo terrestris amboinensis major, later synonymized by Linnaeus (1766) under his concept of Testudo scabra. This appears to show a very young specimen of Melanochelys trijuga trijuga or Melanochelys trijuga thermalis.
FIGURE 7 in A quarter millenium of uses and misuses of the turtle name Testudo scabra: Identification of the type specimens of T. scabra Linnaeus 1758 (= Rhinoclemmys punctularia) and T. scripta Thunberg in Schoepff 1792 (= Trachemys scripta scripta)
FIGURE 7. Type specimen (holotype) of Testudo scripta Thunberg in Schoepff 1792, donated by Thunberg between ca. 1785–92 to the Uppsala University Museum of Zoology (now catalogued as UUZM Types 7455), dried hatchling, ca. 31 mm straight CL. The original tag by Thunberg reads "Testudo scripta. Mus. Thunb." This specimen represents Trachemys scripta scripta.
FIGURE 4 in A quarter millenium of uses and misuses of the turtle name Testudo scabra: Identification of the type specimens of T. scabra Linnaeus 1758 (= Rhinoclemmys punctularia) and T. scripta Thunberg in Schoepff 1792 (= Trachemys scripta scripta)
FIGURE 4. Illustration from Schoepff (1792: pl. 3, figs. 4–5), showing the holotype of Testudo scripta Thunberg in Schoepff 1792 (also Testudo scabra L. sensu Thunberg in Schoepff) (presently Trachemys scripta scripta). On the plate these figures are labeled "Test. scripta Thunb." and the specimen is clearly a hatchling. The specimen itself was originally catalogued as Testudo scripta by Thunberg sometime between 1785 and 1792 and donated by him to the Uppsala University Museum of Zoology, and it is still there as a badly dried and misshaped specimen now catalogued as UUZM Types 7455 (see Fig. 7).
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