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8,443 results for “gastropoda”
Figure 5 in The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora)
Figure 5. Fecundity of pairs of Phaedusa paviei (n = 20) and Oospira vanbuensis (n = 10). Fecundities per month and per observation differ significantly between species (Mann–Whitney U-test; p <0.05).
Figure 3 in The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora)
Figure 3. Progeny retained by dissected individuals of Phaedusa paviei (a). Broods of individuals kept under humid and dry conditions (b). Figures above bars indicate sample size.
Figure 2 in The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora)
Figure 2. Embryos removed from reproductive tract of Phaedusa paviei (a, c), neonates of P. paviei (b, d), eggs of Oospira vanbuensis laid in laboratory culture (e) and hachling of O. vanbuensis (f). Scale bar: 1 mm.
Figure 1 in The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora)
Figure 1. Shell and clausilium of Oospira vanbuensis (a, c) and Phaedusa paviei (b, d, e). Scale bar – 1 mm.
Figure 7 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 7. Egg production of Subulina octona. (a) Mean number of eggs per reproductive event; (b) mean shell height and mean number of eggs produced.
Figure 3 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 3. Histological sections of the free-oviduct of the subulinid species Subulina octona (a,b); Allopeas gracile (c); Allopeas micra (d) and Leptinaria unilamellata (e,f). Black asterisk, oviduct lumen; white asterisk: underlying connective tissue.
Figure 4 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 4. Histological sections showing the bursa copulatrix and prostate of the subulinid species Allopeas gracile (a–c); Subulina octona (d–f); and Leptinaria unilamellata (g,h). Black asterisk, bursa copulatrix lumen; white asterisk: prostate.
Figure 1 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 1. Morphology of the reproductive system of Subulina octona. (a) Shelled embryo; (b) prostate; (c) free-oviduct; (d) epithelia and basal membrane of the free-oviduct; (e) eggshell; (f,g) bursa copulatrix; (h) general view of the reproductive apparatus; (i, j) general view of the body, showing the spermoviduct which occupies the body whorl and the penultimate whorl of the shell. es, egg shell; eg, egg; se, shelled embryo; sov, spermoviduct; pr, prostate; bc, bursa copulatrix; fo, free-oviduct; pc, penial complex.
Figure 2 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 2. Histological sections of the spermoviduct and egg of the subulinid species Allopeas micra (a,b); Allopeas gracile (c–e); Leptinaria unilamellata (f) and Subulina octona (g,h). SC, secretory cells; black arrow, calcified egg shell; black asterisk, secretory cells; white asterisk, egg with non-calcified egg shell.
Figure 5 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 5. Histological sections showing the spermatheca (indicated by black arrows) of the subulinid species Allopeas micra (a); Subulina octona (b); Allopeas gracile (c) and Leptinaria unilamellata (d).
Figure 6 in Life history of Subulina octona (Brugüière) (Gastropoda: Pulmonata: Subulinidae) based on four-year laboratory observations and a comparative histological analysis of egg-retaining and ovoviviparous subulinids
Figure 6. Growth and mortality of Subulina octona during juvenile, adult and senescent stages. (a) Mean shell height; (b) survival. (c) growth rate.
Figure 2 in Ferrissia californica (Gastropoda: Planorbidae): the first record of a global invader in a cave habitat
Figure 2. Scanning electron microscope (SEM) micrographs of Ferrissia shells collected in (a) the Tskhal-Tsiteli Cave, (b) the Botanical Garden of Sukhumi, Abkhazia, and (c) the Pekhorka River, Moscow Region, Russia.
Figure 5 in Ecological notes of the alien species Godiva quadricolor (Gastropoda: Nudibranchia) occurring in Faro Lake (Italy)
Figure 5. (a) Cytochrome oxidase subunit I (COI) haplotype TCS network showing genetic mutations occurring within Godiva quadricolor specimens; (b) Bayesian topology based on the COI data set (TrN +G model of evolution). Numbers at nodes indicate the support by Bayesian Inference (5 × 106 generations and 25% burn-in, left half) and Maximum Likelihood (1000 bootstrap replicates, right half).
Figure 3 in Ecological notes of the alien species Godiva quadricolor (Gastropoda: Nudibranchia) occurring in Faro Lake (Italy)
Figure 3. Monthly average densities of Godiva quadricolor and Polycera hedgpethi in comparison with surface water temperatures. Asterisks indicate Amathia verticillata blooms.
Figure 2 in Ecological notes of the alien species Godiva quadricolor (Gastropoda: Nudibranchia) occurring in Faro Lake (Italy)
Figure 2. Diachronic peaks of density (individuals/100m2) of Godiva quadricolor at the 16 sampling stations of Faro Lake. The arrows indicate the supposed spread.
Figure 4 in Ecological notes of the alien species Godiva quadricolor (Gastropoda: Nudibranchia) occurring in Faro Lake (Italy)
Figure 4. (a,b) Godiva quadricolor, different colour patterns; (c) G. quadricolor in deposition; (d) Polycera hedgpethi, typical colour pattern, feeding Amathia verticillata; (e) P. hedgpethi, 'pale' colour pattern, feeding A. verticillata; (f) P. hedgpethi, typical colour pattern, feeding Bugula neritina.
Figure 1 in Ecological notes of the alien species Godiva quadricolor (Gastropoda: Nudibranchia) occurring in Faro Lake (Italy)
Figure 1. Italian distribution of Polycera hedgpethi (letters, square) and Godiva quadricolor (numbers, circles). 1: north Adriatic lagoon, Zenetos et al. (2016); 2: Noli, Ligurian Sea, Betti et al. (2015); 3: Sabaudia Lake, Macali et al. (2013); 4: Fusaro Lake, Gulf of Naples, Cervera et al. (2010); 5: Faro Lake, Sicily, present study. A: Sacca Sessola Island, Venice Lagoon, Italy (Keppel et al. 2012); B: Marina di Ravenna docks, Italy (Rudman 2005; Trainito 2005); C: Rimini coast, Italy (Ioni, 2011); D: Fusaro Lake, Gulf of Naples, Cervera et al. 1991 (1988)); E: Faro Lake, Sicily, Giacobbe and De Matteo (2013).
Figure 3 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 3. Male reproductive system of Haminoea aptei sp. nov. (a) System with upper fundus on its rounded form (BNHS opistho 1344). (b) System with upper fundus on its stretched form (BNHS opistho 1343). (c) Detail of interior of fundus (BNHS opistho 1343). Abbreviations: smg, seminal groove; ga, genital aperture; at, atrium; as, atrium sheet; lfu, lower fundus; ufu, upper fundus; sd, seminal duct; pr, prostate; rm, retractor muscle. Scale bars: a, b = 1 mm; c = 0.5 mm.
Figure 2 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 2. Haminoea aptei sp. nov. (a) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1361, H = 13 mm). (b) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1343, H = 7.5 mm). (c) Apertural view (left image) and dorsal view (right image) (BNHS opistho 1344, H = 6 mm). (d) SEM, detail of jaw plate (BNHS opistho 1344). (e) SEM, detail of radula with central rachidian (BNHS opistho 1344). (f) SEM, surface of whole gizzard plate (BNHS opistho 1344). (g) SEM, detail of rachis and ridges (BNHS opistho 1344). (h) SEM, detail of ridge (BNHS opistho 1344). Scale bars: d, e, g = 20 µm; f = 100 µm; h = 5 µm.
Figure 1 in Description of a new species of Haminoea (Gastropoda: Cephalaspidea) from India, with an account of the diversity of the genus in the Indo-West Pacific
Figure 1. Live specimens of Haminoea aptei sp. nov. (a) Andaman Islands (BNHS opistho 1344); animal length: 18.2 mm. (b) Minicoy Island, Lakshadweep Islands (BNHS opistho 1361); animal length: 23.0 mm.
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.