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.
40
datasets available to search
ShareScore release 0.9.0
Dataset results
40 results for “Thamnophis”
Fig. 20 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 20. Upper. Two young dark examples of Thamnophis eques carmenensis from near El Carmen, Tlaxcala. Lengths 686 mm left, 562 mm right. Smaller members of this taxon frequently hid their heads beneath their bodies. Lower. Nearly white venter of a female 700 mm in length from the same locality. All collected July 8, 1964.
Fig. 17 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 17. From the former Lago de Magdalena, Jalisco. Upper. A male of Thamnophis eques scotti, 953 mm in length, collected August 30, 1961. The middorsal stripe is variable in width but not sharply defined from the ground color between the lateral dark spots. Lower. Venter of gravid female, same locality and date, length 1009 mm. Belly pale.
Fig. 16 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 16. The Lago de Magdalena, Jalisco, when it was considerably larger and extended to La Quemada. Adapted by W.H. Brandenburg from Mexican CETENAL topographic maps of 1973 showing low flat areas that at one time were presumably occupied by the lake.
Fig. 15 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 15. The ledge near Magdalena, Jalisco, where we observed about 50 large Thamnophis eques scotti assembled in a balllike mass at night. Water flowed across the ledge after heavy rains and a crude bridge passed over it.
Fig. 13 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 13. From the Laguna de Cajititlán, Jalisco. Upper. A female Thamnophis eques diluvialis, 1055 mm in length, collected July 29, 1965. Lower. A male, AMNH 91692, 900 mm in length, from an isolated locality west of Ixtlahuacán de los Membrillos, Jalisco, collected July 10, 1959. Because of the angle at which the photographs of the two snakes were taken, the pale middorsal stripe is less conspicuous than it was in life.
Fig. 10 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 10. Map of the western end of the Lago de Chapala and several small satellite lakes, all in Jalisco. Delineated by W.H. Brandenburg.
Fig. 19 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 19. Part of the Lagunilla del Carmen looking southeastward on July 8, 1964. The various pools and puddles were kept filled by the overflow from a large spring on a hillside near El Carmen, Tlaxcala. Domestic stock wandered about freely. Thamnophis eques carmenensis and a frog of the Rana pipiens complex were abundant in many parts of the watery landscape.
Fig. 14 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 14. The Lago de Magdalena, Jalisco, as it looked when it still existed during the first half of the 20th century. Adapted from a map in the Atlas Geográfico de los Estados Unidos, published in 1946. Redrawn by W.H. Brandenburg.
Fig. 8 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 8. Dorsal pattern of Thamnophis eques insperatus (AMNH 87550), 600+ mm in original length, from near Zacapu, Michoacán, found dead on the road and not in the best of condition, August 22, 1961. Drawing represents a section of skin from anterior third of body as though belly had been slit down its center, the skin loosened, and then stretched out flat. Head end toward top. Delineated by W.H. Brandenburg. (Unfortunately, this is the only available specimen from the Lago de Zacapu and its huge plexus of irrigation canals.)
Fig. 7 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 7. Upper. Adult male of Thamnophis eques patzcuaroensis (AMNH 88713), 721 mm in total length, collected August 15, 1960, near the shore of the Lago de Pátzcuaro, 5 km southwest of Quiroga, Michoacán. The intensity of the pale longitudinal stripes is variable in this subspecies, regardless of sex. Lower. Venter of snake above, which had an aberrant pattern in life. After long preservation dark crossbands appeared matching those on the venter of the female holotype.
Fig. 5 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 5. Lago de Pátzcuaro, Michoacán. An inlet from the open lake north of the town of Pátzcuaro. Here Indians arrived in their dugout canoes with their handicrafts for market day. An impenetrable wall of tules is visible at the extreme right. August 15, 1960.
Fig 6 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig 6. Upper. Dorsal view of the gravid holotype of Thamnophis eques patzcuaroensis (AMNH 93937), 1025 mm in total length, collected August 7, 1964, 3 km north of the town of Pátzcuaro, Michoacán. Lower. Venter of the holotype, after the birth of her young, showing the characteristic broad black crossbands, one on each ventral scute.
Fig. 3. A in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 3. A. Dorsal view of the gravid holotype of Thamnophis eques cuitzeoensis (AMNH 93915), 1020 mm in total length, collected August 5, 1964, near the causeway. B. Venter of the holotype. C. Three of 18 young born September 13, 1964, to the holotype.
Fig. 2 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 2. Lago de Cuitzeo, Michoacán. South shore and southern end of the 19thcentury causeway across the lake.
Fig. 11 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 11. Upper. Adult female of Thamnophis eques obscurus (AMNH 91693), 834 mm in total length, from the Lago de Chapala, collected July 15, 1959, at the town of Chapala, Jalisco. Note the complete absence of pale longitudinal stripes. Lower. Venter of same snake. The anterior of each ventral scute is dark but not nearly as wide as in the snakes from the Cuenca de Michoacán.
Fig. 12 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 12. From the Laguna de Atotonilco. Upper. A male Thamnophis eques diluvialis, 730 mm in length, collected August 16, 1964, near Villa Corona, Jalisco. The curling of the tail occurs frequently when a snake of the T. eques complex is captured or handled. Lower. Venter of a gravid female, 855 mm in length, same date and locality. Belly relatively dark.
Fig. 4 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 4. Laguna de Yuriria, Guanajuato. Young intergrading snakes (Thamnophis eques eques X T. e. cuitzeoensis). Left. Strongly patterned (270 mm) as in Thamnophis e. eques. Right. Dark and pattern obscure (335 mm), resembling T. e. cuitzeoensis.
Fig. 9 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 9. Semidiagrammatic drawings of individual ventral scutes of snakes from the Cuenca de Michoacán. (Delineated by W.H. Brandenburg.) A. Thamnophis eques cuitzeoensis. Anterior edge (upper) black; posterior very dark gray. B. Thamnophis eques patzcuaroensis. Broad anterior dark, usually black; posterior portion light and in strong contrast with remainder of scute. C. Thamnophis eques insperatus. Anterior black but not as wide as in cuitzeoensis; posterior medium gray. D. Thamnophis eques ssp. Not from the Cuenca de Michoacán but included for contrast.
Fig. 1 in Observations on Garter Snakes of the Thamnophis eques Complex in the Lakes of Mexico's Transvolcanic Belt, with Descriptions of New Taxa
Fig. 1. Areas of lakes and interior drainage of the transvolcanic belt (axis) of Mexico as they existed before the coming of the conquistadors circa A.D. 1500. Adapted from the excellent map serving as figure 4 (p. 108) in the first volume of the Handbook of Middle American Indians, Robert Wauchope, general editor, in a section on hydrography by Jorge L. Tamayo in collaboration with Robert C. West, and published by the University of Texas Press in 1964. The eight lakes from which samples of Thamnophis eques are available for this study are shown in boldface type. Other lakes and two ancient capitals are indicated by circles containing numerals as follows: 1 Sayula, 2 Zapatlán, 3 Guadalupe, 4 Magdalena, 5 Tacumbo, 6 Jaripeo, 7 Zirahuén, 8 Tzintzuntzan the Tarascan capital, 9 Zumpango, 10 Tenochtitlán the Aztec capital, 11 Xochimilco, 12 Xaltocan, 13 Texcoco, 14 Chalco, 15 Apam, and 16 Tepeyahualco.
Phylogenomic analyses resolve relationships among garter snakes (Thamnophis: Natricinae: Colubridae) and elucidate biogeographic history and morphological evolution
<p>Garter snakes (<i>Thamnophis</i>) are a successful group of natricines endemic to North America. They have become important natural models for ecological and evolutionary research, yet prior efforts to resolve phylogenetic relationships have resulted in conflicting topologies and weak support for certain relationships. Here, we use phylogenomic data generated with a reduced representation double-digest RADseq approach to reassess the evolutionary relationships across <i>Thamnophis</i>. We then use the resulting phylogeny to better understand how biogeography and feeding ecology have influenced lineage diversification and morphological evolution. We recovered highly congruent and strongly supported topologies from maximum likelihood and Bayesian inference analyses, but some discordance with a multispecies coalescent approach. All phylogenomic estimates split <i>Thamnophis</i> into two clades largely defined by northern and southern North American species. Divergence time estimates and biogeographic analyses indicate a mid-Miocene origin of <i>Thamnophis </i>in Mexico. In addition, historical vicariant events thought to explain biogeographic patterns in other lineages (e.g., Isthmus of Tehuantepec, Rocky Mountain Range, and Trans-Mexican Volcanic Belt) appear to have influenced patterns of diversification in <i>Thamnophis</i> as well. Analyses of morphological traits associated with feeding ecology showed degrees of phylogenetic signal, and ancestral state reconstruction suggested some association between head morphology and diet composition. Our new estimate of <i>Thamnophis</i> phylogeny yields an improved understanding of the biogeographic history and morphological evolution of garter snakes, and provides a robust framework for future research on these snakes.</p>
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.