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Fig. 5 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 5. Map of southern Brazil and Uruguay, showing the distribution of examined material of Astyanax obscurus (circles), and Astyanax laticeps (squares). Some symbols represent more than one lot or locality.
Fig. 3. Astyanax obscurus, MCP 26125, 65.5 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 3. Astyanax obscurus, MCP 26125, 65.5 mm SL. SEM image of upper and lower jaws, right side. Scale bar = 2 mm.
Fig. 4 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 4. Lateral view of left side of anterior region showing humeral spots of (a) Astyanax obscurus, MCP 26125, 75.6 mm SL, and (b) Astyanax laticeps, MCP 26127, 71.1 mm SL.
Fig. 2. Astyanax obscurus, MCP 40000, 59.2 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 2. Astyanax obscurus, MCP 40000, 59.2 mm SL, rio Cadeia above the large waterfalls, Santa Maria do Herval, Rio Grande do Sul, Brazil.
Fig. 1. Astyanax obscurus, ZMB 7478 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 1. Astyanax obscurus, ZMB 7478, syntype, 57.8 mm SL, rio Cadeia above of the large waterfalls, Santa Maria do Herval, Rio Grande do Sul, Brazil.
Fig. 11 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 11. Tukey box plots of number of branched anal-fin rays in Astyanax laticeps populations by river drainages from south to north. Mean represented by thick vertical bar, and 25th and 75th percetiles as lateral borders of box plots.
Fig. 14 in Redescription of Astyanax obscurus (Hensel, 1870) and A. laticeps (Cope, 1894) (Teleostei: Characidae): two valid freshwater species originally described from rivers of Southern Brazil
Fig. 14. Projection of individual scores in the space of first and second Principal Component axis for the populations of males of Astyanax laticeps.
Fig. 3 in How does diet influence the reproductive seasonality of tropical freshwater fish? A case study of a characin in a tropical mountain river
Fig. 3. Non-Metric Multi-Dimensional Scaling Ordination (NMDS) of monthly variations of the diet with respect to sex. Stress = 0.10. Filled symbols are the dry months.
Fig. 2 in How does diet influence the reproductive seasonality of tropical freshwater fish? A case study of a characin in a tropical mountain river
Fig. 2. Monthly variation of prey types-IRI values. Rainfall follows a bimodal seasonal pattern (shadow on background). The asterisks show the months in which reproduction occurs.
Fig. 1 in How does diet influence the reproductive seasonality of tropical freshwater fish? A case study of a characin in a tropical mountain river
Fig. 1. Ontogenetic and intersexual variation in the diet of Creagrutus guanes. Size classes correspond to standard length ranges: 3 = 21-30 mm; 4 = 31-40 mm; 5 = 41-50 mm; 6 = 51-60 mm; 7 = 61-70mm; 8 = 71-80mm.
Figure A2 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure A2. – Summary of the 162 answers for survey questions 5-9 (see Tab. A1 for details). Letter refer to the difficulties associated with (A) finding information (B) reading articles in English, (C) accessing documents, and (D) other reasons.
Figure 2 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure 2. – The number of species (A) and records (B) in the original (black bars) and new (white bars) data sets for egg (left of the vertical bar) and larval (right of the bar) traits. Numbers in the x-axis correspond to trait numbers in Table I. The maximum possible number of species in (A) was 80 and 288 for the original and new data, respectively. See Table I for trait units and description.
Figure 1 in Length-weight and length-length relationships of 48 Senegalese freshwater fish species based on collection specimens
Figure 1. – Caudal fin length [calculated as (TL-SL) %SL] vs SL in Yongeichthys thomasi. Upper and lower dashed line at 2 standard deviations from the regression line. TL = total length, SL = standard length.
Figure A3 in A student-based expansion of the strategies of reproduction in fish (STOREFISH) database to 288 North American freshwater and anadromous species for 14 egg and larval traits
Figure A3. – Boxplot summaries of the number of references (Q11) and traits (Q12) that the students found. See Table A1 for details.
Figure 1 in Current knowledge of New Caledonian marine and freshwater ichthyofauna, SW Pacific Ocean: diversity, exploitation, threats and management actions
Figure 1. – Location of New Caledonia in the southwest Pacific. Dotted lines: limits of the New Caledonian EEZ, triangles: main seamounts, blue zones: UNESCO world heritage areas, and red hatched zones: fully protected marine areas. Modified from New Caledonian Government, Global seamounts database, The Pew charitable trust.
Figure 5 in A new species of freshwater pipefish (Teleostei: Syngnathidae: Coelonotus) from Papua New Guinea
Figure 5. – Distributions of the species of Coelonotus in the Indo-Pacific: Coelonotus argulus (in blue), Coelonotus leiaspis (in green), Coelonotus biocellatus (in red) and Coelonotus kaipuae n. sp. (in yellow). Type localities: C. argulus (■), C. leiaspis (■), C. biocellatus (■) and C. kaipuae n. sp. (■). Sampled localities in black. PNG: Papua New Guinea.
Figure 4 in A new species of freshwater pipefish (Teleostei: Syngnathidae: Coelonotus) from Papua New Guinea
Figure 4. – Photo of type locality of Coelonotus kaipuae n. sp.. Gavuvu river, West New Britain, Papua New Guinea (© Lord C.).
Figure 1 in A new species of freshwater pipefish (Teleostei: Syngnathidae: Coelonotus) from Papua New Guinea
Figure 1. – Bayesian tree of the cytochrome c oxidase subunit (COI – 564 bp) for sequenced specimens of Coelonotus. Numbers at each node represent posterior probabilities. Outgroups are represented by Hippichthys heptagonus. PNG: Papua New Guinea.
Figure 2. – A in A new species of freshwater pipefish (Teleostei: Syngnathidae: Coelonotus) from Papua New Guinea
Figure 2. – A: Diagram of the head of Coelonotus kaipuae n. sp. B: Diagram of the lateral trunk (in red) and tail (in blue) ridges of Coelonotus kaipuae n. sp.
Data from: Thermal response of freshwater ciliates: can they survive at elevated lake temperatures?
<p>The response of the single-celled ciliates to increased temperature during global warming is critical for the structure and functioning of freshwater food webs. I conducted a meta-analysis of the literature from field studies and experimental evidence to assess the parameters characterising the thermal response of freshwater ciliates. The shape of the thermal performance curve predicts the ciliates' survival at supraoptimal temperatures (i.e., the width of the thermal safety margin, TSM). The ciliates' typical TSM is ~5°C. One-third of the freshwater ciliates dwelling permanently or occasionally in the pelagial cannot survive at temperatures exceeding 30°C. Likewise, cold-stenothermic species, which represent a significant fraction of euplanktonic ciliates, cannot survive by evolutionary adaptation to rapidly warming environments. The statistical analysis revealed that the ciliates' thermal performance is affected by their planktonic lifestyle (euplanktonic versus tychoplanktonic), ability to form cysts, and nutritional ecology. Bactivorous ciliates have the widest temperature niche, and algivorous ciliates have the narrowest temperature niche. Phenotypic plasticity and genetic variation, favouring the selection of pre-adapted species in a new environment, are widespread among freshwater ciliates. However, the lack of evidence for the temperature optima and imprecisely defined tolerance limits of most species hamper the present analysis. The extent of acclimation and adaptation requires further research with more ciliate species than the few chosen thus far. Recent eco-evolutionary experimental work and modelling approaches demonstrated that the ciliates' thermal responses follow general trends predicted by the metabolic theory of ecology and mechanistic functions inherent in enzyme kinetics. The present analysis identified current knowledge gaps and avenues for future research that may serve as a model study for other biota. Thermal adaptation may conflict with adaptation to other stressors (predators, food availability, pH), making general predictions on the future role of freshwater ciliates in a warmer environment difficult, if not impossible, at the moment.</p>
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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.