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739 results for “barnacles”
Data from: Comparative genomics reveals the dynamic evolutionary history of cement protein genes of barnacles from intertidal to deep-sea hydrothermal vents
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Data from: Diel rhythmicity of activity and corticosterone metabolites in Arctic barnacle geese during breeding
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Data from: Testing adaptive hypotheses on the evolution of larval life history in acorn and stalked barnacles
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Limiting scaring activities reduces economic costs associated with foraging barnacle geese: results from an individual-based model
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Arctic migrating barnacle geese utilise accommodation fields in a new agricultural staging area
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Data from: Alongshore variation in barnacle populations is determined by surfzone hydrodynamics
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FIGURE 12. Peltogaster reticulata, nauplius V. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 12. Peltogaster reticulata, nauplius V. A, ventral view; B, head shield setae; C, frontolateral horn; D, hind body; E, antennula. Cf, cuticular fringes; su, suture; 1–2a, head shield setae; 5, 6, antennular setae.
FIGURE 13. Peltogaster reticulata, cypris larva. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 13. Peltogaster reticulata, cypris larva. A, lateral view of male larva; B, anterior lattice organ 2 (LO2); C, posterior lattice organs 3–5; D, pores of frontolateral horn gland; E, F, porefields; G, hole with porefield; H, antennules of male cyprid; I, J, attachment disc of male larva; K, the fourth antennular segment of male larva; L, M, attachment disc of female larva; N, the fourth antennular segment of female larva. As, axial sense seta; bz, breakage zone; fe, flap-like extension; fp, filamentous processes; ma, male aesthetasc; oes, open-ended seta; p, pore; pas1, postaxial sense seta 1; pas2, postaxial sense seta 2; pf, porefield; sa, subterminal aesthetasc; sk, skirt; ts, terminal setae.
FIGURE 4 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 4. BI consensus tree of partial mt COI gene sequences of the genus Peltogaster. The HKY+G substitution model was used for the analysis. The Bayesian posterior probability and bootstrap values higher than 50% for the NJ analyses are shown near nodes (the order of their values is BI/NJ).
FIGURE 8 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 8. Outlines of antennules (Al I–Al V), antenna (An) and mandible (Md) of the naupliar stages of Peltogaster reticulata. 1–6, antennular setae; bs, basipod seta. Scale bar 25 µm.
FIGURE 11. Peltogaster reticulata, nauplius IV. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 11. Peltogaster reticulata, nauplius IV. A, ventral view; B, hind body; C, furca; D, antennule. De, denticles; 5, 6, antennular setae.
FIGURE 3 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 3. Transverse sections of the externa of Peltogaster reticulata. A, mature ovary; B, embryos; C, colleteric gland; D, colleteric gland near posterior end; E, left and right receptacles (colleteric gland does not reach the stalk); F, left receptacle near anterior end; G, receptacle duct; H, receptacle duct before outlet in the mantle cavity. Cg, colleteric gland; em, embryos; ov, ovary; m, mantle; r, receptacle; rd, receptacle duct; sh, shield; st, stalk.
FIGURE 10. Peltogaster reticulata, nauplius III. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 10. Peltogaster reticulata, nauplius III. A, ventral view; B, frontolateral horn; C, hind body with furca; D, antennular setae; E, antenna. Bs, basipod seta; se, subterminal seta; su, suture.
FIGURE 2 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 2. SEM showing cuticle structure of the externa of Peltogaster reticulata. A, external cuticle (arrows show longitudinal and transverse ridges); B, internal cuticle; C, a group of two retinacula on one base; D, groups of two or four retinacula; E, a single balloon-like retinaculum; F, lamp-brush retinaculum is released out of balloon-like envelope.
FIGURE 9. Peltogaster reticulata, nauplius II. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 9. Peltogaster reticulata, nauplius II. A, ventral view; B, dorsal view; C, flotation collar; D, head shield setae; E, the third head shield seta with subterminal pore; F, head shield pore; G, attachment ridge; H, frontolateral horn; I, labrum; J, hind body; K, furca; L, antennules and antennae. Bs, basipod seta; cf, cuticular fringes; fc, flotation collar; po, pore on shield head (D) and on attachment disc (G); se, subterminal seta; su, suture; 1, 2, 2a, anterior head shield setae; 1–5, antennular setae.
FIGURE 6 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 6. Body outlines (ventral view) of male and female larvae of Peltogaster reticulata. A, NI–NV, naupliar stages; B, cypris stages; C, head shield of nauplius III (dorsal view with setation); D, carapace of cyprid (lateral view with lattice organs). 1–5, head shield setae (C), lattice organs (D); p, pore; pf, porefield. Scale bar 100 µm.
FIGURE 5 in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 5. Size-frequency distribution of male (black bars) and female (grey bars) cyprids of Peltogaster reticulata.
FIGURE 7. Peltogaster reticulata, nauplius I. A in The parasitic barnacle Peltogaster reticulata Shiino, 1943 (Rhizocephala, Peltogastridae) fromRussian watersof the Sea of Japan:morphological description molecular identification and complete larval development
FIGURE 7. Peltogaster reticulata, nauplius I. A, ventral view; B, dorsal view; C, details of B; D, frontolateral horn; E, appendages. Al, antennule; an, antenna; fh, frontolateral horn; fr, furcal rami; md, mandible; po, pore; se, subterminal seta; su, suture; 2, 2a, head shield setae.
Data from: Macro-to-nanoscale investigation of wall-plate joints in the acorn barnacle Semibalanus balanoides: correlative imaging, biological form and function, and bioinspiration
Correlative imaging combines information from multiple modalities (physical–chemical–mechanical properties) at various length scales (centimetre to nanometre) to understand the complex biological materials across dimensions (2D–3D). Here, we have used numerous coupled systems: X-ray microscopy (XRM), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), optical light microscopy (LM) and focused ion beam (FIB-SEM) microscopy to ascertain the microstructural and crystallographic properties of the wall-plate joints in the barnacle Semibalanus balanoides. The exoskeleton is composed of six interlocking wall plates, and the interlocks between neighbouring plates (alae) allow barnacles to expand and grow while remaining sealed and structurally strong. Our results indicate that the ala contain functionally graded orientations and microstructures in their crystallography, which has implications for naturally functioning microstructures, potential natural strengthening and preferred oriented biomineralization. Elongated grains at the outer edge of the ala are oriented perpendicularly to the contact surface, and the c-axis rotates with the radius of the ala. Additionally, we identify for the first time three-dimensional nanoscale ala pore networks revealing that the pores are only visible at the tip of the ala and that pore thickening occurs on the inside (soft bodied) edge of the plates. The pore networks appear to have the same orientation as the oriented crystallography, and we deduce that the pore networks are probably organic channels and pockets, which are involved with the biomineralization process. Understanding these multiscale features contributes towards an understanding of the structural architecture in barnacles, but also their consideration for bioinspiration of human-made materials. The work demonstrates that correlative methods spanning different length scales, dimensions and modes enable the extension of the structure–property relationships in materials to form and function of organisms.
Data from: Love the one you're with: proximity determines paternity success in the barnacle Tetraclita rubescens
A species' mating system sets limits on the strength of sexual selection. Sexual selection is widespread in dioecious species, but is less well documented in hermaphrodites, and may be less important. We used four highly polymorphic microsatellite markers to assign paternity to broods of the hermaphroditic eastern Pacific volcano barnacle Tetraclita rubescens. These data were used to describe the species' mating system and to examine factors affecting male reproductive success. Tetraclita can sire broods over distances of 11.2 cm, but proximity to the sperm recipient had a highly significant effect on the probability of siring success. There was no effect of body size or the mass of male reproductive tissues on siring success. Broods showed relatively low frequencies of multiple paternity; even at high densities, 75% of broods had only one father. High frequencies of single-paternity broods imply either that this species does not compete via sperm displacement, or that sperm displacement is extremely effective, potentially explaining the lack of a positive relationship between male investment and paternity. In addition, there was low variance in siring success among individuals, suggesting a lack of strong sexual selection on male traits. Low variance among sires and the strong effect of proximity are likely driven by the unusual biology of a sessile copulating species.
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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.