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44 results for “Freshwater springs”
FIGURE 3 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 3. SEM images of Spinopyrgus luismaedai n. gen. et n. sp. (L–P). L. Specimen (UJMC-255) from El Molino spring with strong spines. M. Specimen (UJMC-255) apical view. N. Specimen (UJMC-256), protoconch. O. Specimen (UJMC-255), details of the strong axial elements of the body whorl. P. Specimen (UJMC-256) from Juan Guerra spring, protoconch. Q-T. Pyrgophorus parvulus (Guilding) from Río Sabinas, Coahuila, Mexico (from Czaja et al. 2022, Fig. 5A). Q, R. Specimen (UJMC 460a) from Río Sabinas from both sides. S. Same specimen with details of the spiral elements of the body whorl. T. Same specimen (UJMC 460a), protoconch.
FIGURE 2. Spinopyrgus luismaedai n. gen. et n in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 2. Spinopyrgus luismaedai n. gen. et n. sp. (A–K). A–B. Holotype (UJMC-250) from Juan Guerra spring. C. Paratype 1 (UJMC-251) from Juan Guerra spring. D. Paratype 2 (UJMC-252) from Juan Guerra spring. E, F. Paratype 3 (UJMC-252a) from Juan Guerra spring, specimen with three keels. G. Specimen (UJMC-253) from El Molino spring. H. Specimen (UJMC- 254) from Juan Guerra spring. I. Specimen (UJMC-253) from El Molino spring, protoconch view. J. Paratype 3 (UJMC-251), details of the carina with spines. K. Specimen (UJMC-253b) from El Molino spring, details of the carina with shovel-shaped spines.
FIGURE 1 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 1. Study area showing the locations of the Viesca springs. The scale bar refers to the map with the springs marked. The topography is illustrated using HillShade in ArcGIS.
FIGURE 9 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 9. Maximum likelihood and Bayesian majority rule consensus topologies of 'thermophila' group using 3' COI or combined 3' COI/16S gene fragments with C. 'sp. WA2' ('spelunca' group) as outgroup. A, maximum likelihood (3' COI) topology with bootstrap values>50% shown; B, Bayesian (3' COI) majority rule consensus topology with Bayesian posterior probability values, nodes with probability values <0.50 have been collapsed; C, Bayesian combined (3' COI/16S) majority rule consensus topology with Bayesian posterior probability values.
FIGURE 8 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 8. Maximum likelihood topology of Australian Caridina 16S rDNA dataset with bootstrap values>50% shown.
FIGURE 6. A in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 6. A, Google Earth image (2016) of Leichhardt Springs showing north and south arms, downstream confluence and the location of temperature sensors on the north arm (head and 160 m downstream); B, Seasonal, water temperature profiles for Leichhardt Springs (north arm: head and 160 m downstream) and Radon Springs, Kakadu NP.
FIGURE 4 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 4. Caridina biyiga sp. nov. Paratype ♂ 2.05 mm CL (MAGNT Cr019225): A, first pleopod; D, abdominal pleura 4–6; G, left uropodal protopod. Paratype non-ovig. ♀ 2.25 mm CL (MAGNT Cr019227): B, right uropodal diaeresis, plumose setation omitted; H, ventrolateral view of pre-anal plate; I, telson. Paratype ♂ 2.15 mm CL (MAGNT Cr019225): C, second pleopod. Holotype ♀ 2.2 mm CL (MAGNT Cr019223): E, right third pereiopod; F, right fourth pereiopod; J, right coxa of fourth pereiopod showing epipod and setobranchs; K, fifth pereiopod. Scale bars = 1 mm.
FIGURE 3 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 3. Caridina biyiga sp. nov. Paratype ♂ 2.05 mm CL (MAGNT Cr019225). A, metastoma; B, mandibles; C, maxillula; D, second maxilliped; E, maxilla; F, first maxilliped; G, third maxilliped (dorsal view of left maxilliped). Scale bar = 1 mm.
FIGURE 2 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 2. Caridina biyiga sp. nov. Holotype ♀ 2.2 mm CL (MAGNT Cr019223): A, habitus; C, right first pleopod; D, right second pereiopod; E, enlarged view of rostrum; H, dorsal view of tip of propodus of right first cheliped, setation cut to reveal tip. Paratype ovig. ♀ 2.45 mm CL (MAGNT Cr019226): B, posterodorsal view of anteromedial acron showing transverse ca- rina; G, right antennule. Paratype ♂ 2.05 mm CL (MAGNT Cr019225): F, scaphocerite, setation omitted; J, carapace. Paratype non-ovig. ♀ 2.25 mm CL (MAGNT Cr019227): I, carapace. Scale bar for A = 5 mm, divisions = 1 mm. Remaining scale bars = 1 mm.
FIGURE 1 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 1. Maps showing the location of the study area. Upper left, location of the general study area within Australia; upper right, detailed view of the study area showing the location of Leichhardt Springs; main lower map, broader view of the study area showing its location within Kakadu NP and the Northern Territory.
FIGURE 11 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 11. Live colouration of selected NT Caridina species. A, transversely banded colour form of C. 'sp. WA4' from the Blackmore River, Darwin area, NT; B, longitudinally banded colour form of same; C, C. 'sp. Gulf1' from the Howard R, Darwin area, NT; D, C. 'sp. NT2' from the Blackmore River, Darwin area, NT; E, C. 'sp. NT nilotica' from Leanyer Swamp, Buffalo Creek, Darwin Area; F, closeup view of cephalothorax of same. All photos courtesy of Dave Wilson.
FIGURE 10. A in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 10. A, first pereiopod of Caridina wilkinsi (MAGNT Cr019230); B, cephalothorax of same; C, location of preanal carina; D, Caridina 'sp. NT2' (MAGNT Cr019234); E, Caridina 'sp. Gulf1' (MAGNT Cr019232); F–H, pre-anal carina variation in lateral view (setation omitted); I, Caridina 'sp. NT nilotica' (MAGNT Cr019235); J, Caridina typus (MAGNT Cr019231); K, Caridina 'sp. WA4' (MAGNT Cr019236); L, Caridina 'sp. NT1' (MAGNT Cr019233).
FIGURE 7 in Caridina biyiga sp. nov., a new freshwater shrimp (Crustacea: Decapoda Atyidae) from Leichhardt Springs, Kakadu National Park, Australia, based on morphological and molecular data, with a preliminary illustrated key to Northern Territory Caridina
FIGURE 7. Bayesian majority rule consensus topology of Australian Caridina 16S rDNA dataset with Bayesian posterior probability values. Nodes with probability values <0.50 have been collapsed.
Data from: Ecological effects on metabolic scaling amphipod responses to fish predators in freshwater springs
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Data from: Live, dead, and fossil mollusks in Florida freshwater springs and spring-fed rivers: taphonomic pathways and the formation of multi-sourced, time-averaged death assemblages
Taphonomic processes are informative about the magnitude and timing of paleoecological changes but remain poorly understood with respect to freshwater invertebrates in spring-fed rivers and streams. We compared taphonomic alteration among freshwater gastropods in live, dead (surficial shell accumulations), and fossil (late Pleistocene-early Holocene in situ sediments) assemblages from two Florida spring-fed systems, the Wakulla and Silver/Ocklawaha Rivers. We assessed taphonomy of two gastropod species: the native <i>Elimia floridensis</i> (n=2504) and introduced <i>Melanoides tuberculata</i> (n=168). We quantified seven taphonomic attributes (aperture condition, color, fragmentation, abrasion, juvenile spire condition, dissolution, and exterior luster) and combined those attributes into a total taphonomic score (TT). Fossil <i>E. floridensis</i> specimens exhibited the greatest degradation (highest TT scores), whereas live specimens of both species were least degraded. Specimens of <i>E. floridensis</i> from death assemblages were less altered than fossil specimens of the same species. Within death assemblages, specimens of <i>M. tuberculata</i> were significantly less altered than specimens of <i>E. floridensis</i>, but highly degraded specimens dominated in both species. Radiocarbon dates on fossils clustered between 9792 and 7087 cal. BP, whereas death assemblage ages ranged from 10,692 to 1173 cal. BP. Possible explanations for the observed taphonomic patterns include: (1) rapid taphonomic shell alteration, (2) prolonged near-surface exposure to moderate alteration rates, and/or (3) introduction of reworked fossil shells into surficial assemblages. Combined radiocarbon dates and taphonomic analyses suggest that all these processes may have played a role in death assemblage formation. In these fluvial settings, shell accumulations develop as a complex mixture of specimens derived from multiple sources and characterized by multi-millennial time averaging. These findings suggest that, when available, fossil assemblages may be more appropriate than death assemblages for assessing pre-industrial faunal associations and recent anthropogenic changes in freshwater ecosystems.
FIGURE 1 in Crangonyx islandicus sp. nov., a subterranean freshwater amphipod (Crustacea, Amphipoda, Crangonyctidae) from springs in lava fields in Iceland
FIGURE 1. Crangonyx islandicus sp. nov., female paratype, 6.2 mm, Vatnsvik. Habitus. Scale: 1 mm.
FIGURE 4 in Crangonyx islandicus sp. nov., a subterranean freshwater amphipod (Crustacea, Amphipoda, Crangonyctidae) from springs in lava fields in Iceland
FIGURE 4. Crangonyx islandicus sp. nov., female paratype, 6.2 mm, Vatnsvik. A, pereopod 3. B,
Figures 18-24 from: Czaja A, Gladstone NS, Becerra-López JL, Estrada-Rodríguez JL, Sáenz‑Mata J, Hernández-Terán F (2021) A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141. https://doi.org/10.3897/subtbiol.39.67799
Figures 18-24 SEM images of Phreatoviesca spinosa gen. nov. et sp. nov. 18 shell apex with protoconch, UJMC 508 19 paratype 3, shell apex with protoconch, UJMC 503 20 shell apex with protoconch, UJMC 510 21 paratype 1, apex with protoconch, UJMC 501 22 smooth specimen with body whorl shows irregular, strong marked growth lines, UJMC 508 23 paratype 1, body whorl shows irregular, strong marked growth lines, UJMC 501 24 paratype 2, body whorl shows regularly spaced shovel-shaped spines, UJMC 502.
Figures 14-17 from: Czaja A, Gladstone NS, Becerra-López JL, Estrada-Rodríguez JL, Sáenz‑Mata J, Hernández-Terán F (2021) A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141. https://doi.org/10.3897/subtbiol.39.67799
Figures 14-17 SEM images of Phreatoviesca spinosa gen. nov. et sp. nov. 14 specimen with strong spines, UJMC 506 15 specimen with ribs, UJMC 507 16 specimen with smooth whorls, UJMC 508 17 specimen with smooth whorls, UJMC 509. Scale bar: 1 mm.
Figure 1 from: Czaja A, Gladstone NS, Becerra-López JL, Estrada-Rodríguez JL, Sáenz‑Mata J, Hernández-Terán F (2021) A remarkable new genus and species of subterranean freshwater snail from a recently dried-up spring of Viesca, Coahuila, Northern Mexico. Subterranean Biology 39: 129-141. https://doi.org/10.3897/subtbiol.39.67799
Figure 1 Map of the study area with localization of the sampling site near the town of Viesca, Coahuila, Mexico.
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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.