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679 results for “crayfish”
Data from: Correlated evolution of conspicuous coloration and burrowing in crayfish
<p>Conspicuous colors have fascinated biologists for centuries, leading to research on the evolution and functional significance of color traits. In many cases, research suggests that many conspicuous colors are adaptive and serve some function in sexual or aposematic signaling. In other cases, a lack of evidence for the adaptive value of conspicuous colors troubles biologists, such as within organisms that live underground and are rarely exposed to the surface. Here, we use phylogenetic comparative methods to investigate color evolution throughout freshwater crayfishes that vary in burrowing ability. Within the taxa we analyzed, conspicuous colors have evolved independently over 50 times; and these conspicuous colors are more common in semi-terrestrial crayfishes that construct extensive burrows. The intuitive, but not evolutionary-justified assumption when presented these results is to assume that these colors are adaptive. But contrary to this intuition, we discuss the hypothesis that coloration in crayfish is neutral. Supporting these ideas, small population sizes and reduced gene flow within semi-terrestrial burrowing crayfishes may lead to fixation in color-phenotype mutations. Overall, our work brings into question the traditional view of animal coloration as a perfectly adapted phenotype.</p>
Figure 4 in It's a Trap! An evaluation of different passive trap types to effectively catch and control the invasive red swamp crayfish (Procambarus clarkii) in streams of the Santa Monica Mountains
Figure 4. Mean crayfish catch per trap by sex. Bars indicate standard error.
Fig. 3 in Effect Of Zinc And Cadmium Ions On Histostructure Of Antennal Glands Of Marbled Crayfish Procambarus Fallax (Hagen, 1870) F. Virginalis (Decapoda)
Fig. 3. Antennal gland of marbled crayfish under influence of zink (40х).
Fig. 2 in Effect Of Zinc And Cadmium Ions On Histostructure Of Antennal Glands Of Marbled Crayfish Procambarus Fallax (Hagen, 1870) F. Virginalis (Decapoda)
Fig. 2. Histology of antennal gland of marbled crayfish control (40x).
Fig. 1 in Study on the Stone crayfish Austropotamobius torrentium (Schrank, 1803) (Crustacea: Decapoda: Astacidae) population in the Dospat Dam (Western Rhodope Mountains, Bulgaria)
Fig. 1. Views from the collection sites at the area of the Dospat Dam during present study.
Data from: Influence of warming on the functional responses of invasive omnivores, Procambarus crayfishes
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Data from: Nonconsumptive predator effects modify crayfish-induced bioturbation as mediated by limb loss: field and mesocosm experiments
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Data from: Color variation and visual modeling provide no support for adaptive coloration in a blue crayfish
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Invasive crayfish: drivers or passengers of degradation in freshwater ecosystems?
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Data from: Combining geostatistical and biotic interactions modelling to predict amphibian refuges under crayfish invasion across dendritic stream networks
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Interactions between CNS regulation and serotonergic modulation of crayfish hindgut motility
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Data from: Electrochemical sensing of hormonal serotonin levels in Crayfish
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Data from: Correlated evolution of conspicuous coloration and burrowing in crayfish
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DNA barcoding is currently unreliable for species identification in Crayfish
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Fear and safety chemical cue data in crayfish
In this data, you’ll find crayfish movement data (walking speeds and times spent in different sections of the test arena) as a response to differing concentrations and types of fear cues (predatory and alarm cues) as well as differing levels of safety cues. The organization of the fear cues and safety cues in the arena were orthogonal to each other which allows a user to examine movements along each of the different stimuli levels separately or in combination. The movement of the crayfish was digitized at 1 point per second and at a single location (center of the carapace) of the animal.
Figure 1 in Estimating the young evolutionary age of marbled crayfish from museum samples
Figure 1. Geographical origin and sex distribution of Procambarus fallax samples in the USNM collection. Figures in circles indicate number of lots collected in the respective county. Both sexes were found in 194 lots in 39 counties. Pure female samples with>3 specimens were found in 7 lots in 7 counties and pure male samples>3 specimens were found in 2 lots in 1 county. The circles marked by H and V indicate counties not represented in the USNM collection. They were collected by Hendrix et al. (2000) and Van der Heiden and Dorn (2017), respectively. These samples included both sexes.
FIGURE 32 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 32. Highly contrasting color patterns of structures (arrows) in the family Parastacidae similar to contrasting color patterns seen the family Cambaridae. Represented are two species from different genera within the family Parastacidae, Euastacus claytoni and Cherax snowden. Photos by Chris Lukhaup.
FIGURE 30. Partial cladogram modified from Data Set 3 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 30. Partial cladogram modified from Data Set 3 from Stern et al. 2017 showing Clades 4 & 5, with photos for comparison of color patterns between Cambarus aff. dubius and Cambarus gentryi.
FIGURE 26. Partial cladogram modified from Data Set 3 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 26. Partial cladogram modified from Data Set 3 from Stern et al. (2017); showing two subclades A & B within the clade of the former subgenus Pennides in the genus Procambarus.
FIGURE 31 in Review of crayfish color patterns in the Family Cambaridae (Astacoidea), with discussion of their possible importance
FIGURE 31. Possible convergent evolution shown in the camouflage color patterns found in two species in different genera within the family Cambaridae, Barbicambarus cornutus and Cambarus rusticiformis with a species from the family Astacidae, Pacifastacus gambelii. Photo of Pacifastacus gambelii by Eric Larson.
ScienceDex guides
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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.