Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
12
datasets available to search
ShareScore release 0.9.0
Dataset results
12 results for “Chrysemys”
Sex, shells, and weaponry: Coercive reproductive tactics in the Painted Turtle, Chrysemys picta
<p><strong>Abstract. </strong>Males and females have divergent reproductive interests arising from their unequal investments in offspring. This sexual conflict drives an antagonistic arms-race that influences sex-specific reproductive success. Alternative reproductive tactics are expected in long-lived species for which the reproductive strategy that maximizes mating success could differ across body sizes. The mating strategy of the painted turtle (<em>Chrysemys picta</em>) has been characterized as an elaborate and amiable male courtship display during which males use their elongate foreclaws to stroke females, coupled with female mate choice. Contrary to this long-held understanding, <em>in situ</em> field observations and experimental trials from our long-term study in Algonquin Provincial Park, Canada, demonstrate that males also exhibit an alternative, coercive mating strategy. Males are equipped with sexually-size dimorphic tomiodonts, tooth-like cusps of the beak, as well as a weaponized anterior shell, with which they wound the head and neck of females. Behavioral trials during the breeding periods showed that male reproductive tactics shift from courtship (foreclaw display) to coercion (striking, biting, and forced submergence) across ontogeny, and male size predicts the occurrence and frequency of coercive behavior. We found phenotype-behavior matching whereby small males invest in putatively ornamental foreclaws used for courtship and large males invest in weaponry for coercion, challenging existing knowledge of this well-studied species. As a group with a long evolutionary history and varied mating systems, Testudines are a particularly interesting taxon in which to ask questions about mating system evolution.</p>
Figure 10 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 10. Fossil occurrences of C. picta through time, with the modern range shown in darker grey (see/compare with Figure 1). A, movement of C. picta based on fossil occurrences from the Barstovian to the Clarendonian NALMAs. B, movement of C. picta based on fossil occurrences from the Clarendonian to the Hemphillian NALMAs. C, movement of C. picta based on fossil occurrences from the Hemphillian to the Blancan NALMAs. D, movement of C. picta based on fossil occurrences from the Blancan to the Irvingtonian NALMAs. E, movement of C. picta based on fossil occurrences from the Irvingtonian to the Rancholabrean NALMAs. F, movement of C. picta based on fossil occurrences from the Rancholabrean to the Santarosean NALMAs. G, movement of C. picta based on fossil occurrences from the Santarosean to the Saintaugustinean NALMAs. H, extensions to the range of C. picta currently temporally unknown based on lack of fossil evidence. I, range extensions of the genus Chrysemys based on fossil species unique from C. picta, with numbered arrows showing these extensions temporally as beginning with 1 followed by 2 and finally 3. Note: Alachua County, Florida, is shown in (I) representing the fossil localities of 'C.' aeilliamsi and a potential new Chrysemys species, although it is not considered part of the expansion as 'C.' aeilliamsi probably does not represent Chrysemys (see text) and the potential novel species of Chrysemys has not been thoroughly studied (see Bourque et al., 2007).
Figure 8 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 8. Strict consensus tree of the phylogenetic relationships of deirochelyine emydids supported by this study based on morphological data constrained by a molecular backbone. See text and Supporting Information (Data S1–S4) for details. Intergeneric relationships of modern taxa constrained based on molecular phylogenetic analysis presented by Spinks et al. (2016: fig. 5). Analysis includes the emydine Clemmys guttata as the outgroup. The tree presented represents the strict consensus tree of deirochelyine relationships found in the phylogenetic analysis of 246 characters within 35 deirochelyines (ingroup taxa). Thickened bars indicate age ranges for fossil taxa. † refers to a fossil or extinct taxon. Tree length equals 881 steps, consistency index equals 0.413, retention index equals 0.515. Numbers beside branches provide the Bremer supports (first) and bootstrap values (second). Numbers are shown for branches with bootstrap values greater than 50.
Figure 7 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 7. Chrysemys carapace comparisons, focusing on the morphology of the anterior edge. A-D, Chrysemys corniculata sp. nov. carapace in dorsal view: A, C. corniculata sp. nov., holotype carapace (ETMNH–12491); B, C. corniculata sp. nov. paratype carapace (ETMNH–20609); C, C. corniculata sp. nov., paratype carapace (ETMNH-20544); D, C. corniculata sp. nov., paratype carapace (ETMNH-3559), with arrow pointing to nuchal horns that occupy the anteromedial portion of marginal 1. E-I, C. picta anterior carapace morphology: E, female C. picta nuchal (UF 48670) in dorsal view; F, male C. picta nuchal (UF 49963) in dorsal view; G, male C. picta anterior carapace (ETVP 9683) in dorsal view with arrow pointing to the marginals 1 portion of the nuchal where the nuchal horns are present as an inconspicuous anterior projection; H, male C. picta anterior carapace with an arrow pointing to the lighter-coloured anterior projections of marginal 1 that would lie above the nuchal horns; I, female C. picta anterior carapace showing no anterior projections. Scale bars: A-D, 5 cm; E-G, 1 cm; H-I, not to scale.
Figure 6. Chrysemys, skull material. A, I, L, C in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 6. Chrysemys, skull material. A, I, L, C. picta (UF 30445) cranial material: A, left maxilla in lateral view; I, lower jaws in dorsal (= occlusal) view; L, left lower jaw in lateral view. B-D, Chrysemys corniculata sp. nov. (ETMNH-20544, paratype) nearly complete left maxilla in lateral view (B), dorsal view (C) and ventral (= occlusal) view (D). E-H, C. corniculata sp. nov. (ETMNH-3559, paratype) incomplete right quadrate in medial view (E), anterior (rostral) view (F), right lateral view (G) and ventral view (H). J-K, M, C. corniculata sp. nov. (ETMNH-12491, holotype) nearly complete lower jaws in dorsal view (J), ventral view (K) and left lower jaws in lateral view (M). Abbreviations: cm, condylus mandibularis; ct, cavum tympani; fdm, foramen dentofaciale majus; fsm, foramen supramaxillare; lr, labial ridge; mr, median ridge; par, processus articularis; pme, posteromedial extension; tr, tomial ridge; ts, triturating surface. Scale bar: 1 cm.
Figure 11 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 11. Life reconstruction of Chrysemys corniculata sp. nov. at the Gray Fossil Site in north-eastern Tennessee during the latest Miocene-earliest Pliocene by Sergey Krasovskiy.
Figure 4 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 4. Chrysemys picta (ETVP 9683) shell, male. A, carapace in dorsal view. B, plastron in ventral view. C, carapace in anterior view. Anterior of the shell is to the top of the page for A and B. Scale bar: 5 cm.
Figure 3 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 3. Chrysemys corniculata sp. nov. carapace and Chrysemys carapacial texture. A, C. corniculata sp. nov., holotype carapace (ETMNH 12491) in anterior view, with dashed line showing anterior curvature of the carapace. B, paratype shell (ETMNH 20544) in right lateral view. C-F, Chrysemys carapacial texture comparison. C-D, C. corniculata sp. nov., paratype carapace (ETMNH-3559) in dorsal view: C, portion of carapace focusing on region of vertebrals 1 and 2, showing texturing; D, close-up view under vertebral 2 showing carapacial texturing under low angle light. E-F, C. picta, (ETVP 9683) carapace in dorsal view: E, portion of the carapace focusing on region of vertebrals 1 and 2; F, close-up view under vertebral 2 showing inconspicuous carapacial texturing under low angle light. Arrows point to convex lateral and posterior borders of vertebral 1 in C. corniculata. Scale bar: A-B, 5 cm; E-F, images not to scale.
Figure 1 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 1. North American map showing modern distribution of C. picta, separated out by different subspecies, and highlighting the fossil localities of several Chrysemys species. A, current distribution of C. p. bellii; B, current distribution of C. p. marginata; C, current distribution of C. p. picta; D, current distribution of C. p. dorsalis; E, intergradation zone of C. p. bellii and C. p. marginata; F, intergradation zone of C. p. marginata and C. p. picta; G, intergradation zone of C. p. dorsalis and C. p. picta. Abbreviations: Ca, type locality of C. antiqua; Cc, type locality of Chrysemys corniculata sp. nov.; Ct, type locality of C. timida; Cw, type locality of 'C.' aeilliamsi.
Figure 2 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 2. Chrysemys corniculata sp. nov., holotype carapace (ETMNH-12491) in dorsal view. A, line drawing of carapace in dorsal view, with bones outlined in black and scutes with dashed outlines; B, carapace in dorsal view; C, line drawing with scutes outlined in black and bones with dashed outlines. Abbreviations: Bones: co, costal, number represents costal number with first and last labelled; ne, neural, number represents neural number with first and last labelled; nu, nuchal; per, peripheral, number represents peripheral number with first and last labelled; py, pygal; spa, anterior suprapygal; spp, posterior suprapygal. Scutes (scales): ce, cervical; ma, marginal, number represents marginal number with first and last labelled; pl, pleural, number represents pleural number with first and last labelled; v, vertebral, number represents vertebral number with first and last labelled. Scale bar: 5 cm.
Figure 9 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 9. Fifty percent majority rule consensus tree of the phylogenetic relationships of deirochelyine emydids supported by this study based on morphological data constrained by a molecular backbone. See text and Supporting Information (Data S1–S4) for details. Intergeneric relationships of modern taxa constrained based on molecular phylogenetic analysis presented by Spinks et al. (2016: fig. 5). Analysis includes the emydine Clemmys guttata as the outgroup. The tree presented represents the 50% majority rule consensus tree of deirochelyine relationships found in the phylogenetic analysis of 246 characters within 35 deirochelyines (ingroup taxa). Thickened bars indicate age ranges for fossil taxa. † refers to a fossil or extinct taxon. Tree length equals 881 steps, consistency index equals 0.413, retention index equals 0.515. Numbers beside branches provide the Bremer supports (first) and the bootstrap values (second). Numbers are shown for branches with bootstrap values greater than 50.
Figure 5 in A new species of Chrysemys (Emydidae: Deirochelyinae) from the latest Miocene-Early Pliocene of Tennessee, USA and its implications for the evolution of painted turtles
Figure 5. Chrysemys corniculata sp. nov. plastron. A-C, C. corniculata sp. nov., holotype plastron (ETMNH-12491) in ventral view: A, line drawing of plastron in ventral view, with bones outlined in black and scutes with dashed outlines; B, plastron in ventral view; C, line drawing with scutes outlined in black and bones with dashed outlines, and arrow pointing to the concavity on the rim of the anterior plastral lobe with the anterior plastron projection anterior to this point. D, C. corniculata sp. nov., paratype plastron (ETMNH-20544) in anterior view highlighting the anterior plastral embayment. E-F, Chrysemys, anterior plastral lobe in dorsal (visceral) view highlighting gular overlap length differences: E, C. corniculata sp. nov., holotype anterior plastron (ETMNH-12491) in dorsal view; F, C. picta anterior plastron (ETVP 9683) in dorsal view. Abbreviations: Bones: ent, entoplastron; epi, epiplastron; hyo, hyoplastron; hyp, hypoplastron; xi, xiphiplastron. Scutes (scales): ab, abdominal; an, anal; ax, axillary; fe, femoral; gu, gular; hu, humeral; in, inguinal; pe, pectoral. Features: guo, gular overlap. Scale bars: 5 cm for A-C, D-E and F.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
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.