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Figure 9 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 9. Heterorotula kakauensis sampled from the Horomatangi Geothermal System of Lake Taupo, New Zealand at 125–180 m depth (by the submarine Jago). (A) ectosomal skeleton at the sponge surface. (B) choanosomal skeleton. (C–E) spiny oxeas as megascleres with rosette–like (verticillate) spinosity. (F) gemmule. (G) top view of the distal rotules of the gemmuloscleres at the gemmular theca surface. (H) gemmulosclere. (I) malformed gemmulosclere. (A–B FW-POR 564, C–E FW-POR 566; F–I FW- POR 565).
Figure 6. The historical material BMNH 23.10.7.1 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 6. The historical material BMNH 23.10.7.1 previously identified as Ephydatia kakahuensis and presently considered a mix of Heterorotula kakahuensis and a possible Pottsiela taxon.
Figure 7 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 7. Heterorotula kakahuensis (as Ephydatia kakahuensis). Megascleres and gemmules of part of the historical material BMNH 23.10.7.1. (A–B) skeletal megascleres. (C) gemmule with spicular cage. (D) foramen. (E–F) close-up on the distal rotules of gemmuloscleres in the trilayered gemmular theca (FW- POR 428, FW-POR 429).
Figure 1 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 1. (A) Study area of Spongillida (Porifera, Demospongiae) in insular freshwater of Australasia. (B) New Caledonia Island harbours three endemic species viz. Heterorotula caledonensisı Oncosclera diahoti, and Pachyrotula raceki (genus Pachyrotula is also endemic). Heterorotula multidentata is shared by New Caledonia and Eastern Australia. (C) Geographic range of Heterorotula kakahuensis endemic to New Zealand.
Figure 2 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 2. Oncosclera diahoti (modified after Rützler 1968) endemic to New Caledonia. (A) grouped gemmules. (B1a and B2a) centrotylote oxeas as gemmuloscleres. (B2b), smooth oxea as megasclere (detail).
Figure 4 in An overview on the freshwater sponge fauna (Demospongiae: Spongillida) of New Zealand and New Caledonia with new insights into Heterorotula from deep thermal vents of the Lake Taupo
Figure 4. (A) Heterorotula caledonensis (modified after Volkmer-Ribeiro and Rützler, 1997) endemic to New Caledonia. (Aa) gemmuloscleres without rotules. (Ab) gemmuloscleres as birotules. (Ac), variously spiny acanthoxeas as megascleres. (Ad) gemmuloscleres (aberrant). (B) Heterorotula multidentata (modified after Volkmer-Ribeiro and Rützler 1997). (Ba) oxeas spiny to smooth, as megascleres. (Bb) birotules of different dimensional classes as gemmuloscleres. (C) Pachyrotula raceki (modified after Volkmer-Ribeiro and Rützler 1997) endemic to New Caledonia. (Ca) spiny oxeas as megascleres. (Cb) variable morphs of spiny gemmuloscleres.
Data from: Terrestrial-focused protected areas are effective for conservation of freshwater fish diversity in Lake Tanganyika
Freshwater protected areas are rarely designed specifically for this purpose and consequently their conservation benefit cannot be guaranteed. Using Lake Tanganyika as a test case we investigated the benefits of terrestrial-focussed protected areas on the alpha and beta taxonomic and functional diversity of the diverse endemic rocky-shore cichlid fishes. Lake Tanganyika has limited protected shorelines and continued human population growth in its catchment, which has potential for negative impacts on habitat quality and key biological processes. We conducted 554 underwater surveys across a gradient of human disturbance including two protected areas, along 180 km of Tanzanian coastline, sampling 70 cichlid species representing a diverse range of life-histories and trophic groups. Alpha diversity was up to 50% lower outside of protected areas, and herbivores appeared most affected. Turnover dominated within-locality variation in beta diversity, but the nestedness component was positively related to human disturbance indicating an increase in generalist species outside of protected areas. Within protected areas the decline in zeta diversity (the expected number of shared species across multiple surveys) was best described by power law functions, which occur when local abundance is predicted by regional abundance; but declined exponentially in unprotected waters indicating a dominance of stochastic assembly. Despite not being designed for the purpose, the protected areas are clearly benefitting cichlid taxonomic and functional diversity within Lake Tanganyika, probably through local reduction in sediment deposition and/or pollution, but as cichlids can be poor dispersers protected area coverage should be expanded to benefit isolated communities.
Data from: Gene expression plasticity evolves in response to colonization of freshwater lakes in threespine stickleback
Phenotypic plasticity is predicted to facilitate individual survival and/or evolve in response to novel environments. Plasticity that facilitates survival should both permit colonization and act as a buffer against further evolution, with contemporary and derived forms predicted to be similarly plastic for a suite of traits. On the other hand, given the importance of plasticity in maintaining internal homeostasis, derived populations that encounter greater environmental heterogeneity should evolve greater plasticity. We tested the evolutionary significance of phenotypic plasticity in coastal British Columbian postglacial populations of threespine stickleback (Gasterosteus aculeatus) that evolved under greater seasonal extremes in temperature after invading freshwater lakes from the sea. Two ancestral (contemporary marine) and two derived (contemporary freshwater) populations of stickleback were raised near their thermal tolerance extremes, 7°C and 22°C. Gene expression plasticity was estimated for more than 14 000 genes. Over five thousand genes were similarly plastic in marine and freshwater stickleback, but freshwater populations exhibited significantly more genes with plastic expression than marine populations. Furthermore, several of the loci shown to exhibit gene expression plasticity have been previously implicated in the adaptive evolution of freshwater populations, including a gene involved in mitochondrial regulation (PPARAa). Collectively, these data provide molecular evidence that highlights the importance of plasticity in colonization and adaptation to new environments.
FIGURE 7 in A new species of Gieysztoria (Platyhelminthes; Rhabdocoela; Dalyelliidae) from a freshwater lake in Queensland, Australia
FIGURE 7. Light microscopical view of the vesicula granulorum (VG) and vesicula seminalis (VS) atop the girdle (G) of the male copulatory organ. Scale bar = 50 m.
FIGURES 36 in A new species of Gieysztoria (Platyhelminthes; Rhabdocoela; Dalyelliidae) from a freshwater lake in Queensland, Australia
FIGURES 36. Male copulatory organ of Gieysztoria queenslandica n. sp. 3, Dorsal view of squashed male organ; 4, Ventral view of squashed male organ; 5, Schematic view of dorsal side of male organ. 6, Schematic view of ventral side of male organ.
FIGURES 12. Gieysztoria queenslandica n in A new species of Gieysztoria (Platyhelminthes; Rhabdocoela; Dalyelliidae) from a freshwater lake in Queensland, Australia
FIGURES 12. Gieysztoria queenslandica n. sp. 1, Features visible in live adult specimens; 2, Schematic of reproductive system. Scale bars = 150 m. BC, bursa copulatrix; DC, ductus communis; GA, genital atrium; GC, genital canal; GP, common gonopore; EG, egg; OV, ovary; RS, receptaculum seminis; T, testis; UT, uterus; V, vitellaria; VG, vesicula granulorum; VS, vesicula seminalis.
FIGURE 7 in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 7. Molecular phylogeny of Tylomelania. Maximum Likelihood phylogram based on 851 bp of mitochondrial 16S rDNA (outgroup not shown). Malili lake species are marked by grey boxes, the position of the new species is indicated by a black bar. Numbers on branches are ML bootstrap values.
FIGURE 6. T in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 6. T. hannelorae sp. nov. (loc. 57-03). A–B. shells, A. holotype, MZB Gst. 12.114, B. paratypes, ZMB Moll. 190713. Scale bar = 1 cm. C. opercula, ZMB Moll. 190713. Scale bar = 1 mm. D–E. radula, ZMB Moll. 190713. D. segment, frontal, E. segment, apical (45°). Scale bar = 0.1 mm, F–H. embryonic shells, ZMB Moll. 190713. F. lateral view, G. apical whorls, lateral, H. apical view. Scale bar = 0.5 mm.
FIGURE 5. T in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 5. T. sinabartfeldi sp. nov., ZMB Moll. 108315 (loc. 58-99). A–D. radula, A,B, keeled shell morph, A. segment, frontal, B. segment, apical (45°); C,D. round shell morph, C. segment, frontal, D. segment, apical (45°). Scale bar = 0.1 mm. E–K. embryonic shells, E–G, round shell morph, E. lateral view, F. apical whorls, lateral, G. apical view; H–K, keeled shell morph, H. lateral view, I. apical whorls, lateral, K. apical view. Scale bar = 0.5 mm.
FIGURE 4. T in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 4. T. sinabartfeldi sp. nov. (loc. 58-99). A–D. shells, A. holotype, MZB Gst. 12.112, B. paratypes, ZMB Moll. 108315. Scale bar = 1 cm. C. opercula, ZMB Moll. 108315. Scale bar = 0.5 cm.
FIGURE 3. T in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 3. T. baskasti sp. nov., ZMB Moll. 190534 (loc. 15-02). A–B. radula, A. segment, frontal, B. segment, apical (45°). Scale bar = 0.1 mm. C–E. embryonic shells, C. lateral view, D. apical whorls, lateral, E. apical view. Scale bar = 1 mm.
FIGURE 2. T in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 2. T. baskasti sp. nov.; A–D. shells, A. holotype, MZB Gst. 12.108 (loc. 71-02), B. paratypes, ZMB Moll. 190535 (loc. 71-02), C. paratypes, ZMB Moll. 190534 (loc. 15-02), D. paratypes, ZMB Moll. 190533 (loc. 14-02). Scale bar = 1 cm. E–F. opercula, E. paratype, ZMB Moll. 190534 (loc. 15-02), F. paratype, ZMB Moll. 190533 (loc. 14-02). Scale bar = 0.5 cm.
FIGURE 1 in Three new species of the freshwater snail genus Tylomelania (Caenogastropoda: Pachychilidae) from the Malili lake system, Sulawesi, Indonesia
FIGURE 1. Sulawesi and the Malili lake system with sample sites. Locality numbers are the original field numbers and correspond to those in Tab. 1.
FIGURE 10. Potamonautes semilunaris. A, G1 in A revision of the freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae) of the Lake Kivu drainage basin in Central and East Africa
FIGURE 10. Potamonautes semilunaris. A, G1, ventral view; B, G1, dorsal view; C, G2; D, detail of G1, ventral view; E, detail of G1, dorsal view. Adult male paratype (SMF 2429), length of G1 terminal article measured along the mid-line of the dorsal face from tip to dorsal membrane = 0.9 mm.
FIGURE 11 in A revision of the freshwater crabs (Crustacea: Decapoda: Brachyura: Potamonautidae) of the Lake Kivu drainage basin in Central and East Africa
FIGURE 11. Potamonautes semilunaris distribution. = type locality, = other localities. Scale bar = 63 km. Localities are shown for material examined in this study and in Bott (1955).
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.