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Figure 1 in Phylogenomics of Characidae, a hyper-diverse Neotropical freshwater fish lineage, with a phylogenetic classification including four families (Teleostei: Characiformes)
Figure 1. Accumulation curve of the original descriptions of current valid genera of Characidae s.l. highlighting the three periods of active descriptions of genera: (i) 1777–1900, (ii) 1900–1955, and (iii) 1955–present.
Figure 5 in Phylogenomics of Characidae, a hyper-diverse Neotropical freshwater fish lineage, with a phylogenetic classification including four families (Teleostei: Characiformes)
Figure 5. Phylogeny of Acestrorhamphidae and subfamilies Oxybryconinae, Trochilocharacinae, Stygichthyinae, Megalamphodinae, and Stichonodontinae based on 1348 nuclear loci of ultraconserved elements (538 472 bp). Numbers near nodes represent bootstrap support.
Table 2 in Redescription of Aspidogaster limacoides Diesing, 1834 (Aspidogastrea: Aspidogastridae) from freshwater fishes of northern Germany
<p><b>Table 2</b> Comparison of topographical structures of three species of <i>Aspidogaster</i> based on SEM</p><table><tbody><tr><th>Characters</th><th>Species</th><th></th><th></th></tr></tbody><tbody><tr><th></th><td><i>A. limacoides</i> Diesing 1834</td><td><i>A. ijimai</i> Kawamura, 1913</td><td><i>A. conchicola</i> Baer, 1827</td></tr><tr><th>Mouth</th><td>Cupshapeda</td><td>Cupshapedb</td><td>Cupshapedb</td></tr><tr><th>Depression on neck</th><td>Presenta</td><td>Presentb</td><td>Presentb</td></tr><tr><th>Microridges</th><td>Notobserveda</td><td>Presentb</td><td>Absentb</td></tr><tr><th>Alveoli</th><td>54-58a</td><td></td><td></td></tr><tr><th></th><td>58c</td><td>42c</td><td>114c</td></tr><tr><th></th><td>62d</td><td>46gh</td><td>110i</td></tr><tr><th></th><td>50-74ef</td><td></td><td></td></tr><tr><th>Arrangement of alveoli</th><td>One alveolus on each end</td><td>One alveolus on each end, two alveoli</td><td>One alveolus on both ends, two</td></tr><tr><th></th><td>and four on each rowac</td><td>with two rows and four on each rowcgh</td><td>alveoli with two rows and four on each rowci</td></tr><tr><th>Pits</th><td>Numerousa</td><td>Numerousb</td><td>Numerousbj</td></tr><tr><th>Marginal organs</th><td>Presenta</td><td>Presentb</td><td>Presentb</td></tr><tr><th>Number of marginal organs if</th><td>28-30a</td><td></td><td></td></tr><tr><th>considering margninal organs present on each interalveolar septa</th><td>26-38e 30cd</td><td>24c 26gh</td><td>60c</td></tr><tr><th>Papillae-like structures</th><td>Present and located posterior-lateral to the moutha</td><td>Absentb</td><td>Absentb</td></tr><tr><th>Non-ciliated bulbous papillae</th><td>Absenta</td><td>Present and scattered over the surfaceb</td><td>Present and scattered over the surfaceb</td></tr><tr><th>Uniciliated sensory structures</th><td>Absenta</td><td>Absentb</td><td>Presentbj</td></tr><tr><th>Excretory pore</th><td>Sub-terminala</td><td>Terminalb</td><td>Terminalb</td></tr></tbody></table><p><sup>aPresent</sup> study; <sup>b</sup> Gao et al. (2003); <sup>cAtopkin</sup> et al. (2017); <sup>dPopiołek</sup> et al. (2007); <sup>eBychowsky</sup> and Bychowsky (1934); <sup>fReimer</sup> (2002); <sup>gLee</sup> et al. (2017); <sup>hSokolov</sup> et al. (2019); <sup>iBakker</sup> and Diegenbach (1974); <sup>jHalton</sup> and Lyness (1971)</p>
FIGURE 1 in Checklist of helminth parasites of freshwater fishes from Mexico
FIGURE 1. Mexico, showing main drainage basins from which hosts have been collected and the boundary between the Neotropical and Nearctic biogeographical areas.
FIGURE 3 in Trichodinids (Ciliophora: Peritrichida) parasitic on gills of freshwater fishes, Carassius auratus and Aristichthys nobilis from China, with the description of Trichodina subtilihamata sp. nov.
FIGURE 3. Diagrammatic drawing of the denticles of Trichodina spp. A–B. Trichodina subtilihamata sp. nov.; C: Trichodina uniforma Van As & Basson, 1989; D: Trichodina nigra Lom, 1960; E–F: Trichodina kazubski Van As & Basson, 1989; G–H: Trichodina mutabilis Kazubski & Migala, 1968.
FIGURE 2 in Trichodinids (Ciliophora: Peritrichida) parasitic on gills of freshwater fishes, Carassius auratus and Aristichthys nobilis from China, with the description of Trichodina subtilihamata sp. nov.
FIGURE 2. Photomicrographs of silver impregnated adhesive discs of Trichodina spp. A–B. Trichodina kazubski Van As & Basson, 1989; C–D: Trichodina mutabilis Kazubski & Migala, 1968. Scale bar = 20m.
FIGURE 1 in Trichodinids (Ciliophora: Peritrichida) parasitic on gills of freshwater fishes, Carassius auratus and Aristichthys nobilis from China, with the description of Trichodina subtilihamata sp. nov.
FIGURE 1. Photomicrographs of silver impregnated specimens of Trichodina spp. A–B. Trichodina subtilihamata sp. nov; C: Trichodina uniforma Van As & Basson, 1989; D: Trichodina nigra Lom, 1960. Scale bar = 20m.
Data: Diversity-production relationships of fish communities in freshwater stream ecosystems
<p>Ecological relationships between species richness and biomass production are increasingly thought to be pervasive across the globe. Yet diversity-production relationships have not been explored extensively for freshwater fish communities even though fisheries production provides key services to humans. Our aim was to evaluate the diversity-production relationship for fish communities inhabiting freshwater streams across the Appalachian Mountain range and examine how diversity-production relationships varied across streams possessing different thermal signatures. Our study area included 25 freshwater stream ecosystems spanning from Vermont to North Carolina in the United States. Twenty sites were located in Maryland south to Tennessee and North Carolina while five additional higher latitude sites were sampled in Massachusetts and Maine. We sampled 25 study streams from June to September 2012 and collected fish population information to calculate biomass, species richness, Shannon diversity index, and annual production for each fish community. Linear mixed models were used to analyze the relationship between diversity indices and total community production. We also compared diversity and production relationships across other taxa. Across all streams, community fish production, biomass and P/B ratios ranged 0.15-6.79 g m<sup>2 </sup>y<sup>1</sup>, 0.61-0.73 g m-2, and 0.21-1.07 y<sup>-1</sup>, respectively. Species richness had a significant positive effect (p = 0.012) on community fish production, while accounting for the thermal signature of the streams as a random effect and other habitat covariates. Shannon diversity index did not have a significant effect (p = 0.101) on community production. The diversity-production relationship observed for stream fish communities was similar to other studies but demonstrated one of the highest slopes. Our results demonstrate that effects of biodiversity resonate to influence the production of fishes; thus, management of fisheries is more closely coupled to biodiversity than previously thought.</p>
The roles of aridification and sea level changes in the diversification and persistence of freshwater fish lineages
<p>While the influence of Pleistocene climatic changes on divergence and speciation has been well-documented across the globe, complex spatial interactions between hydrology and eustatics over longer timeframes may also determine species evolutionary trajectories. Within the Australian continent, glacial cycles were not associated with changes in ice cover and instead largely resulted in fluctuations from moist to arid conditions across the landscape. Here, we investigate the role of hydrological and coastal topographic changes brought about by Plio-Pleistocene climatic changes on the biogeographic history of a small Australian freshwater fish, the southern pygmy perch <em>Nannoperca australis</em>. Using 7,958 ddRAD-seq (double digest restriction-site associated DNA) loci and 45,104 filtered SNPs, we combined phylogenetic, coalescent and species distribution analyses to investigate the various roles of aridification, sea level and tectonics and associated biogeographic changes across southeast Australia. Sea-level changes since the Pliocene and reduction or disappearance of large waterbodies throughout the Pleistocene were determining factors in strong divergence across the clade, including the initial formation and maintenance of a cryptic species, <em>N.</em> 'flindersi'. Isolated climatic refugia and fragmentation due to lack of connected waterways maintained the identity and divergence of inter- and intraspecific lineages. Our historical findings suggest that predicted increases in aridification and sea level due to anthropogenic climate change might result in markedly different demographic impacts, both spatially and across different landscape types.</p>
Elements of fish metacommunity structure in Neotropical freshwater streams
<p>The identification of the mechanisms underlying co-occurrence patterns of species is a way to identify which processes (niche, neutral or both) structure metacommunities. In this paper, our goals are to identify patterns of co-occurrence in neotropical stream fish and determine which processes structure the metacommunity and the gradients that underlie this structure. Our results pointed out that the metacommunity formed by the total pool of species is structured by a nested pattern (Hyperdispersed Species Loss) of co-occurrence and the mass effect mechanism. On the other hand, a set of core species displays a Clementisian pattern and is structured by the species sorting mechanism. Both, hyperdispersed species loss and the Clementisian patterns point to a discrete set of communities in the metacommunity. These communities could be isolated by physicochemical conditions, or physical barriers, like dams or waterfalls.</p>
FIGURE 1 in Helminth parasites of some freshwater fishes from Baja California Sur, Mexico
FIGURE 1. Fish collection sites in Baja California Sur, Mexico: 1. Oasis San José del Cabo (23° 03' 32" N, 109° 41' 28.8" W); 2. Stream La Tinaja-Miraflores (23° 21' 59.4" N, 109° 45' 19.2" W); 3. Stream Santiago (Boca de la Sierra) (23° 26' 24" N, 109° 48' 27.9" W); 4. Pond Las Pocitas (24° 24' 08.1" N, 111° 06' 10.8" W); 5. Reservoir San Pedro (24° 50' 21,3" N, 111° 04' 54.8" W); 6. Stream at the Misión San Luis Gonzaga (24° 54' 34.2" N, 111° 17' 27.0" W); 7. Oasis La Purísima (26° 09' 30.2" N, 112° 7' 43.6" W); 8. Stream San José de Magdalena (27° 03' 57.3" N, 112° 12' 41.3" W); 9. Oasis San Ignacio (27° 10' 30.2" N, 112° 52' 2.8" W); 10. Stream San Joaquín El Sauzal (27° 31' 29.4" N, 112° 56' 54.4" W); 11. Pond Poza Larga (27° 16' 28" N, 112° 54' 49.5" W); 12. Pond Corralitos (27° 13' 02.7" N, 112° 59' 17.4" W); 13. Pond Los Pinos (27° 12' 38.6" N, 112° 59' 53.7" W).
Drivers of phylogenetic structure in Amazon freshwater fish assemblages
<p>Environmental and historical predictors values for the 97 sub-drainages of Amazon basin. Sampling effort (SamplingEffort), water color (WaterColor), network density (NetwD), the land cover heterogeneity (CoverDiv), and the soil heterogeneity (SoilDiv), area in km² (Area) and its log transformation (Area_log), distance from river mouth (DistMouth), the number of natural fragmentation (Waterfall) and its log transformation (Waterfall_log), sub-drainages present in Pebas lake region (Pebaslake), proportion of sub-drainage covered by sea water (Sea.water.at> 1Mya, Sea.water.at< 5Mya ) and its arcsin transformation (Sea.water.at>1Mya_asin). PCAs conducted in our study with variables of past climate (PC1_Diff_CurrentLGM, PC2_Diff_CurrentLGM, PC3_Diff_CurrentLGM) and current climate (PC1_GlobEnv, PC2_GlobEnv, PC3_GlobEnv, PC4_GlobEnv) and the raw values used to perform PCAs: mean, max and min annual temperatures and precipitations at the Last Glacial Maximum (PastClimate) and of the current climate variables (CurrClimate); and the mean, minimum, maximum, range of elevation in m.</p>
FIGURE 62 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURE 62. Interrelationships of 6 African bothriocephalideans and their relatives based on Bayesian inferrence analysis of partial sequences of the large subunit rDNA (lsrDNA). Rooted phylogram with node labels showing Bayesian posterior probabilities/bootstrap support values. Newly characterized sequences are marked with an asterisk.
FIGURE 61 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURE 61. Distribution map of African bothriocephalideans according to existing voucher material (unconfirmed literature records not included). Ichthyological provinces are marked as follows: I. Maghreb, II. Nilo Sudan, IIa. Abyssinian subprovince, III. Upper Guinea, IV. Lower Guinea, V. Congo, VI. Quanza, VII. Zambezi, VIII. East Coast, IX. Southern province (map orig. M. Jirků; delimitation of ichthyological provinces modified from Lévêque et al. 2008).
FIGURES 53–60 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 53–60. Line drawings of Tetracampos martinae Kuchta, n. sp. ex Bagrus meridionalis from Lake Malawi (IPCAS C-608). 53, Total view of the worm with anterior and posterior part of the body. 54, Scolex, lateral view. 55, Detail of hooks. 56, Complete circle of hooks. 57, Gravid segment, ventral view, eggs not illustrated. 58, Egg. 59, Gravid segment, eggs not illustrated. 60, Cross-section of the gravid segment in the level of cirrus-sac.
FIGURES 41–48 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 41–48. Line drawings of Tetracampos ciliotheca Wedl, 1861 ex Clarias anguillaris from the Sudan (IPCAS C- 466). 41, Complete worm. 42, Scolex, dorsoventral view. 43, Complete circle of hooks. 44, Gravid segment, ventral view. 45, Detail of hooks. 46, Cross-section of gravid segment at level of cirrus-sac. 47, Egg. 48, Gravid segment entirely filled with eggs.
FIGURES 23–32 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 23–32. Scanning electron micrographs of the scoleces and the body surface. 23–27, Polyonchobothrium polypteri (Leydig, 1853) ex Polypterus bichir from Kenya (IPCAS C-464). 23, Scolex, dorsoventral view. 24, Apical disc. 25, Surface of apical region of scolex. 26, Gravid proglottid, dorsal view. 27, Detail of operculum of egg. 28–32, Tetracampos ciliotheca Wedl, 1861 ex Clarias anguillaris from the Sudan (IPCAS C-466). 28, Scolex, dorsoventral view. 29, Detail of hooks. 30, Surface of apical region of scolex. 31, Gravid proglottid, dorsoventral view. 32, Egg.
FIGURES 33–40 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 33–40. Line drawings of Polyonchobothrium polypteri (Leydig, 1853) ex Polypterus spp. from Kenya and the Sudan (IPCAS C-464). 33, Complete worm. 34, Scolex, dorsoventral view. 35, Complete circle of hooks. 36, Detail of hooks. 37, Egg. 38, Detail of genital complex of mature segment, dorsal view. 39, Mature segment, dorsal view, neotype. 40, Crosssection of the gravid segment at the level of cirrus-sac. Abbreviations: e, eggs; pg, prostatic glands; vd, vas deferens.
FIGURES 49–52 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 49–52. Photomicrographs of histological sections of Tetracampos ciliotheca Wedl, 1861 in the intestinal wall of Clarias gariepinus from Ethiopia (IPCAS C-466). 49, Cross-section of the intestinal wall at the level of the scolex. 50, Crosssection of the intestinal wall with several parts of the worm. 51, Detail of apical part of the scolex in the intestinal wall. 52, Detail of the parasite and host surface. * indicates the body of the parasite.
FIGURES 15–22 in Bothriocephalidean tapeworms (Cestoda) of freshwater fish in Africa, including erection of Kirstenella n. gen. and description of Tetracampos martinae n. sp.
FIGURES 15–22. Line drawings of Kirstenella gordoni (Woodland, 1937) ex Heterobranchus bidorsalis from Kenya (IPCAS C-609). 15, Complete worm. 16, Detail of hooks. 17, Scolex, dorsoventral view. 18, Complete circle of hooks. 19, Detail of genital complex of mature segment, dorsal view. 20, Egg. 21, Cross-section of gravid segment at level of cirrus-sac. 22, Mature segment, dorsal view. Abbreviations: cs, cirrus-sac; gp, genital pore; iv, internal seminal vesicle; lm, inner longitudinal muscles; ov, ovary; t, testes; up, uterine pore; ut, uterus; v, vagina; vd, vas deferens; vf, vitelline follicles; vr, viteline reservoir.
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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.