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184 results for “freshwater habitat”
Dynamic landscapes of fear and safety alter prey refuge use in freshwater habitats
The non-consumptive effects of predators on prey behavior have been studied in many different systems. However, predator-prey ecology has placed a bulk of emphasis on how fear alters prey behavior, and new studies have begun to shift focus to the importance that safety in the form of refuges has in structuring prey behavioral responses. This project focuses on changes in the safety landscape as well as changes in the fear landscape and how these changes impact crayfish behavior. Using an established bass-crayfish predator prey system, we altered shelter quality and location in relation to the presence of bass odor signals. We measured shelter use by the crayfish in response to this changing landscape.
Fig. 15 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 15. Undulacandona colymba sp. nov. A. Internal view of male left valve (LBM 1430006279). B. Internal view of male right valve (LBM 1430006283). C. Internal view of female left valve (LBM 1430006280). D. Internal view of female right valve (LBM 1430006280). E. Detail of external surface of female right valve. F. Female antennule (LBM 1430006280). G. Female antenna (LBM 1430006280). H. Detail of female antenna (LBM 1430006280). I. Detail of male antenna (LBM 1430006279). J. Detail of female's final antennal segment (LBM 1430006280). K. Detail of female's final antennal segment. Scale bar: A–D = 464 µm; E = 232 µm; F–G = 117 µm; H–K = 92 µm.
Fig. 14 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 14. Undulacandona colymba sp. nov. A. External view of male right valve (LBM 1430006283). B. Right view of female carapace (LBM 1430006284). C. Dorsal view of female carapace, anterior to right (LBM 1430006284). D. Detail of external surface of male right valve (LBM 1430006283). E. Detail of external surface of female right valve (LBM 1430006284). F. Internal view of male right valve (LBM 1430006283). G. Internal view of female right valve. Scale bar: A–C, F–G = 300 µm; D–E = 87 µm.
Fig. 13 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 13. Pseudocandona falcula sp. nov. A. Male caudal ramus (LBM 1430006275). B. Male caudal ramus attachment (LBM 1430006275). C. Female caudal ramus and genital lobe (LBM 1430006277), black triangle indicates rounded lobe (see text for details). D. Hemipenis (M-process shaded grey) (LBM 1430006275). Scale bar = 151 µm.
Fig. 12 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 12. Pseudocandona falcula sp. nov. A. Male mandibular palp (LBM 1430006275). B. Detail of alpha and beta setae of mandibular palp (LBM 1430006275). C. Male maxillula (setae on endites not drawn) (LBM 1430006275). D. Male left fifth limb palp (LBM 1430006275). E. Male right fifth limb palp (LBM 1430006275). F. Female fifth limb (LBM 1430006276). G. Male sixth limb (LBM 1430006275). H. Male seventh limb (LBM 1430006275). Scale bar: A–C = 82 µm; D–H = 151 µm.
Fig. 11 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 11. Pseudocandona falcula sp. nov. A. Internal view of male left valve (LBM 1430006275). B. Internal view of female left valve (LBM 1430006276). C. Male antennule (LBM 1430006275). D. Male antenna (LBM 1430006275). E. Detail of male antenna (LBM 1430006275). F. Detail of female antenna (LBM 1430006276). G. Male mandibular coxa (LBM 1430006275). Scale bar: A–B = 543 µm; C–D, G = 151 µm; E–F = 82 µm.
Fig. 17 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 17. Undulacandona colymba sp. nov. A. Hemipenis (LBM 1430006279). B. Zenker organ (LBM 1430006279). C. Male caudal ramus and attachment (LBM 1430006281). Scale bar = 117 µm.
Fig. 10 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 10. Pseudocandona atmeta sp. nov. A. Female caudal ramus and genital lobe (LBM 1430006271) (FGL = female genital lobe). B. Male caudal ramus (LBM 1430006270). C. Hemipenis (M-process shaded grey) (LBM 1430006270), asterisk marks protuberance of outer lobe (a) that contacts M-process. Scale bar = 200 µm.
Fig. 9 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 9. Pseudocandona atmeta sp. nov. A. Male mandibular palp (LBM 1430006270). B. Detail of alpha and beta setae of mandibular palp (LBM 1430006270). C. Male maxillula (setae on endites not drawn) (LBM 1430006270). D. Female fifth limb (LBM 1430006271). E. Male left fifth limb palp (LBM 1430006270). F. Male right fifth limb palp (LBM 1430006270). G. Male sixth limb (LBM 1430006270). H. Male seventh limb (LBM 1430006270). Scale bar = 200 µm.
Fig. 5 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 5. Pseudocandona becca sp. nov. A. Caudal ramus and female genital lobe (LBM 1430006265). B. Hemipenis (LBM 1430006264). C. Detail of lobe h of hemipenis (LBM 1430006264), black triangle marks protrusion (see text for explanation). D. Male caudal ramus (LBM 1430006264). E. Male caudal ramus attachment (LBM 1430006264). Scale bar = 127 µm.
Fig. 6. A in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 6. A. Pseudocandona becca sp. nov. hemipenis (LBM 1430006264). B. Pseudocandona atmeta sp. nov. hemipenis (LBM 1430006270). C. Pseudocandona falcula sp. nov. hemipenis (LBM 1430006275). D. Pseudocandona tenuirostris Hiruta & Mawatari, 2013 hemipenis. E. Undulacandona colymba sp. nov. hemipenis (LBM 1430006279).
Fig. 3 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 3. Pseudocandona becca sp. nov. A. Internal view of male left valve. B. Internal view of female left valve (LBM 1430006266). C. Male antennule (LBM 1430006264). D. Male antenna (LBM 1430006264). E. Detail of male antenna (LBM 1430006264). F. Detail of female antenna (LBM 1430006266). G. Female mandibular coxa (LBM 1430006267). Scale bar: A–B = 500 µm; C–D, G = 127 µm; E–F = 66 µm.
Fig. 4 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 4. Pseudocandona becca sp. nov. A. Female mandibular palp (LBM 1430006267). B. Alpha and beta setae of the mandibular palp (LBM 1430006267). C. Female maxillula (setae on endites not drawn) (LBM 1430006265). D–E. Left and right male fifth limb palps (LBM 1430006264). F. Female fifth limb (LBM 1430006265). G. Male sixth limb (LBM 1430006264). H. Male seventh limb (LBM 1430006264). Scale bar: A–C = 66 µm; D–H = 127 µm.
Fig. 16 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 16. Undulacandona colymba sp. nov. A. Female mandibular palp (LBM 1430006282). B. Alpha, beta and gamma setae of mandibular palp (LBM 1430006282). C. Female mandibular coxa (LBM 1430006282). D. Female maxillula (setae on endites not drawn) (LBM 1430006280). E–F. Left and right male fifth limb palps (LBM 1430006279). G. Female fifth limb (LBM 1430006282). H. Male sixth limb (LBM 1430006281). I. Female seventh limb (LBM 1430006280). Scale bar: A–B, D = 61 µm; C, E–I = 117 µm.
Fig. 8 in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 8. Pseudocandona atmeta sp. nov. A. Internal view of male left valve (LBM 1430006270). B. Internal view of female left valve (LBM 1430006271). C. Male antennule (LBM 1430006270). D. Male antenna (LBM 1430006270). E. Detail of male antenna (LBM 1430006270). F. Detail of female antenna (LBM 1430006271). G. Male mandible (LBM 1430006270). Scale bar: A–B = 710 µm; C–D, G = 200 µm; E–F = 122 µm.
Fig. 2. A–E in Four new species of the subfamily Candoninae (Crustacea, Ostracoda) from freshwater habitats in Japan
Fig. 2. A–E. Pseudocandona becca sp. nov. A. Right view of male carapace (LBM 1430006268). B. Right view of female carapace (LBM 1430006269). C. Dorsal view of female carapace, anterior to left (LBM 1430006269). D. Internal view of female left valve (LBM 1430006269). E. Internal view of female right valve (LBM 1430006269). F–I. Pseudocandona atmeta sp. nov. F. Right view of male carapace (LBM 1430006272). G. Right view of female carapace (LBM 1430006273). H. Internal view of female left valve (LBM 1430006274). I. Internal view of female right valve (LBM 1430006274).
Fig. 6. Swamp forest habitat where P in Surveys of Afrotemperate forests yields two new freshwater crabs (Decapoda: Potamonautidae: Potamonautes MacLeay, 1838) from South Africa
Fig. 6. Swamp forest habitat where P. mariepskoppie sp. nov., was collected at the Blyde Canyon Nature Reserve, below the Mariepskop Mountains, Mpumalanga Province, South Africa.
Data for: The interaction between metabolic rate, habitat choice, and resource use in a polymorphic freshwater species
<p>Raw respirometry data and respirometry code</p> <p>Data.xlsx is the data about each fish that was used for all analyses including Stable Isotope values, length, weight, sex, and habitat. This is the data that is used in the R code. </p> <p>Example code of the models used in our analyses</p> <p>TEF_metabolism.xlsx is data on the fish that were kept in the lab for almost a year. </p> <p> </p>
Environmental nucleic acids: a field-based comparison for monitoring freshwater habitats using eDNA and eRNA
<p>Nucleic acids released by organisms and isolated from environmental substrates are increasingly being used for molecular biomonitoring. While environmental DNA (eDNA) has received attention recently, the potential of environmental RNA as a biomonitoring tool remains less explored. Several recent studies using paired DNA and RNA metabarcoding of bulk samples suggest that RNA might better reflect "metabolically active" parts of the community. However, such studies mainly capture organismal eDNA and eRNA. For larger eukaryotes, isolation of extra-organismal RNA will be important, but viability needs to be examined in a field-based setting. In this study we evaluate (a) whether extra-organismal eRNA release from macroeukaryotes can be detected given its supposedly rapid degradation, and (b) if the same field collection methods for eDNA can be applied to eRNA. We collected eDNA and eRNA from water in lakes where fish community composition is well documented, enabling a comparison between the two nucleic acids in two different seasons with monitoring using conventional methods. We found that eRNA is released from macroeukaryotes and can be filtered from water and metabarcoded in a similar manner as eDNA to reliably provide species composition information. eRNA had a small but significantly greater true positive rate than eDNA, indicating that it correctly detects more species known to exist in the lakes. Given relatively small differences between the two molecules in describing fish community composition, we conclude that if eRNA provides significant advantages in terms of lability, it is a strong candidate to add to the suite of molecular monitoring tools.</p>
Fig. 7 in Gill dimensions in near-term embryos of Amazonian freshwater stingrays (Elasmobranchii: Potamotrygonidae) and their relationship to the lifestyle and habitat of neonatal pups
Fig. 7. (A) The relationship between total gill area (cm2) and Relative Opening of the spiracle. (B) Linear regression of the mass-specific gill area (cm2 g-1) and body surface area (cm2) of different potamotrygonid embryos: upsidedown triangle - Plesiotrygon iwamae; star - Paratrygon aiereba; diamond - Potamotrygon motoro (from Negro River); dot - Potamotrygon motoro (from Solimões River); triangle - Potamotrygon orbignyi; square - cururu ray Potamotrygon sp.
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.