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.
679
datasets available to search
ShareScore release 0.9.0
Dataset results
679 results for “Crayfishes”
Data from: Habitat explains patterns of population decline for an invasive crayfish
Invasive non-indigenous species are defined by their impacts: they substantially change native communities or ecosystems. Accordingly, invasive species might transform their habitats in ways that eventually become unfavorable to them, causing population declines or even extirpations. Here we use over 40 years of systematically collected data on the abundance of the invasive rusty crayfish Faxonius rusticus from 17 lakes in northern Wisconsin, USA to explore if population declines of this invader are related to the prevalence of rocky habitat, which shelters crayfish from predators and is unchanged by crayfish. We predicted that lakes with rock-dominated substrates would be resistant to F. rusticus population declines, whereas lakes lacking rock-dominated substrates would experience F. rusticus declines due to crayfish destruction of shelter-providing macrophytes. We found that in nearly half (47%) of the study lakes, F. rusticus experienced population declines over the study time period, and these lakes had significantly lower proportions of rock substrate than lakes that did not experience population declines. We recommend that more studies should investigate the potential for invasive species-mediated community or ecosystem feedbacks to eventually contribute to their own population declines.
FIGURE 5 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 5. Morphological structures of halli Group species. A–D, Cambarus clairitae n. sp. respectively, carapace dorsum, chela dorsum, mesial view of MI gonopod and annulus ventralis; E–H, C. englishi respectively, carapace dorsum, chela dorsum, mesial view of MI gonopod and annulus ventralis; I–L, C. halli respectively, carapace dorsum, chela dorsum, mesial view of MI gonopod and annulus ventralis; M–P, C. obstipus respectively, carapace dorsum, chela dorsum, mesial view of MI gonopod and annulus ventralis.
FIGURE 10 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 10. Distribution map of all four halli Group species: Cambarus clairitae, n. sp. (red cross), C. englishi (black circle), C. halli (red triangle), C. obstipus (black triangle).
FIGURE 1 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 1. Cambarus (Depressicambarus) clairitae n. sp.: Holotype, Jefferson County, AL, dorsal view.
FIGURE 3 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 3. Cambarus (Depressicambarus) clairitae n. sp.: A. lateral view of carapace; B & C, respectively, mesial and lateral view of terminal end of left gonopod of MI; D & E, respectively, mesial and lateral view of terminal end of left gonopod of MII; F, mesial view of entire left gonopod of MI; G, epistome; H, dorsal view of carapace; I, annulus ventralis; J, antennal scale; K, dorsal view of right chela and carpus of MI. (3A–C, F–H & K are of holotype; 3I is of allotype; 3D–E & J are of morphotype).
FIGURE 9 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 9. Lateral view of extended abdomens showing degree of curvature of posterior margins of abdominal pleurites and notch development between them, for: A. Cambarus clairitae, n. sp.; B. C. englishi; C. C. halli.
FIGURE 2 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 2. Cambarus (Depressicambarus) clairitae n. sp.: Holotype, Jefferson County, AL, lateral view.
FIGURE 6 in Cambarus (Depressicambarus) clairitae, a new species of crayfish (Decapoda: Cambaridae) from Alabama with a review of the halli Group in the subgenus Depressicambarus
FIGURE 6. Mesial view of MI gonopod showing angle of recurve of central projection to main axis for each halli Group species. A. Cambarus clairitae n. sp.; B. C. englishi; C. C. halli; D. C. obstipus.
FIGURE 3 in Description of a new subspecies of the crayfish Parastacus brasiliensis (Von Martens, 1869) from São Francisco de Paula, RS, Brazil (Decapoda, Parastacidae)
FIGURE 3. Discriminant scores for individuals of Parastacus brasiliensis promatensis subsp. n. and Parastacus brasiliensis brasiliensis as a function of the carapace length.
FIGURE 2 in Description of a new subspecies of the crayfish Parastacus brasiliensis (Von Martens, 1869) from São Francisco de Paula, RS, Brazil (Decapoda, Parastacidae)
FIGURE 2. Frequency distribution of the Discriminant scores for individuals of Parastacus brasiliensis promatensis subsp. n. and Parastacus brasiliensis brasiliensis.
FIGURE 3 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 3. Ventral view of chela and carpus: a) arrow denoting lack of a distomedian spine on ventral surface of carpus; b) arrow denoting distomedian spine on ventral surface of carpus.
FIGURE 7 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 7. Life colors of O. yanahlindus from locations across its range. AL = Alabama; TN = Tennessee; Co. = county; Cr. = creek; R. = river.
FIGURE 2 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 2. Distribution of specimens measured for analysis and total known range of O. yanahlindus, described herein. Circles = O. putnami, Group 3; Triangles = O. putnami, Group 2; Stars = O. yanahlindus, Group 1; Squares = O. spinosus, Group 0 (Table 1).
FIGURE 1 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 1. Mesial view of a typical form I male gonopod of members of the O. juvenilis Species Complex with long terminal elements (central projection and mesial process) and measurements taken. S = shoulder, CP and yellow arrow = central projection length, MP and white arrow = mesial process length.
FIGURE 6 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 6. Orconectes yanahlindus, new species: A, Lateral view of carapace; B, Mesial view of distal half of first pleopod of form I male, S= shoulder, CP= central projection, MP= mesial process; C, Lateral view of distal half of first pleopod of form I male; D, Mesial view of first pleopod of form I male; E, Lateral view of first pleopod of form I male; F, Mesial view of distal half of first pleopod of form II male; G, Lateral view of distal half of first pleopod of form II male; H, Epistome; I, ventral view of carpus, arrow denoting distomedian carpal spine; J, Dorsal view of carapace; K, Annulus ventralis; KL, Right antennal scale; M, Dorsal view of right chela and carpus. A, B, C, D, E, H, I, J, L and M of holotype (INHS 15453); F and G of morphotype (INHS 15452); K of allotype (INHS 15454).
FIGURE 5 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 5. Boxplot of observed response values from an ANCOVA procedure of areola length/total carapace length ratio by group number. Group 0= O. spinosus, Group 1= O. yanahlindus, described herein, Group 2= O. putnami from the Cumberland R. dr., Group 3= O. putnami from the Ohio R. dr. Length of box represents the interquartile range, diamond in box represents the group mean, horizontal line in box represents the group median, vertical lines represent group maximum and minimum values, and open circles represent group outliers.
FIGURE 4 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex
FIGURE 4. Boxplot of observed response values from an ANOVA procedure of total form I male gonopod length/ total carapace length ratio by group number. Group 0= O. spinosus, Group 1= O. yanahlindus, described herein, Group 2= O. putnami from the Cumberland R. dr., Group 3= O. putnami from the Ohio R. dr. Length of box represents the interquartile range, diamond in box represents the group mean, horizontal line in box represents the group median, vertical lines represent group maximum and minimum values, and open circles represent group outliers.
FIGURE 4. Form I in Cambarus (C.) hatfieldi, a new species of crayfish (Decapoda: Cambaridae) from the Tug Fork River Basin of Kentucky, Virginia and West Virginia, USA
FIGURE 4. Form I gonopod's of (A.) Cambarus hatfieldi, (B.) Cambarus sciotensis, and (C.) Cambarus angularis.
FIGURE 1. Cambarus hatfieldi n in Cambarus (C.) hatfieldi, a new species of crayfish (Decapoda: Cambaridae) from the Tug Fork River Basin of Kentucky, Virginia and West Virginia, USA
FIGURE 1. Cambarus hatfieldi n. sp.: A. lateral view of carapace; B. lateral and C. mesial view of first gonopod of form I male; D. lateral and E. mesial view of form II male gonopod; F. antennal scale; G. dorsal view of carapace; H. dorsal view of distal podomere of right cheliped of form I male; I. caudal view of in situ form I male gonopods; J. annulus ventralis; K. epistome; L. ischial hook; A–C, F–I, K–L from holotype; J from allotype; D–E from morphotype.
FIGURE 3 in Cambarus (C.) hatfieldi, a new species of crayfish (Decapoda: Cambaridae) from the Tug Fork River Basin of Kentucky, Virginia and West Virginia, USA
FIGURE 3. Known range of Cambarus hatfieldi n. sp. in Kentucky, Virginia, and West Virginia. Tug Fork River basin is highlighted in red; yellow circles represent C. hatfieldi collection locales.
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.