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271 results for “zebra”
FIGURE 12 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 12. Reported localities of Megabalanus zebra based on available literature and the present work. Only reports from non-mobile substrate or those with a confidence that belongs to a local population.
FIGURE 10 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 10. Morphometric analysis of scutum inner face. A, scatterplot of the canonical variate scores of relative warps among Megabalanus zebra (Darwin, 1854) (orange x), Megabalanus coccopoma (Darwin, 1854) (green circle) and Megabalanus tintinnabulum (Linnaeus, 1758) (red star); B, thin-plate spline deformation grid of CVA1; and C, box-plot of ratio between scutum basal margin / tergal margin (n=13), with a sample image of each species analyzed.
FIGURE 9 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 9. Morphometric analysis of tergum inner face. A, scatterplot of the canonical variate scores of relative warps among Megabalanus zebra (Darwin, 1854) (orange x), Megabalanus coccopoma (Darwin, 1854) (green circle) and Megabalanus tintinnabulum (Linnaeus, 1758) (red star); B, thin-plate spline deformation grid of CVA1; and C, box-plot of ratio between tergum basal margin segment, scutal side / spur width ratio (n=13), with a sample image of each species analyzed.
FIGURE 8 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 8. Megabalanus zebra (Darwin, 1854) oral appendages from three specimens collected in Chaguaramas, Trinidad. A, labrum; B, detail of labrum (A); C, palp; D, mandible; E, detail of second tooth of mandible (D); F, mandible; G, detail of distal margin of palp (C); H, maxilla I; I, detail of maxilla (H) upper angle; J, detail of mandible (F) showing the 4th and 5th tooth and lower angle; K, maxilla II. A, B and K represent specimen MNRJ 25249; C and G, MNRJ 25245; D and E MNRJ 25255; F, H, I and J, MNRJ 25247. Scale bar = 0.5 mm.
FIGURE 4 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 4. Megabalanus zebra (Darwin, 1854) right parietal plates from a specimen collected from the Progression hull at Chaguaramas, Trinidad (MNRJ 25247). A, external view; B, internal view. al = alae; sh = sheath; rd = radius; c = carina; cl1 = carinolatus 1; cl2 = carinolatus 2. Scale bar = 5 mm.
FIGURE 2 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 2. Specimens of Megabalanus zebra (Darwin, 1854) collected on boat hulls sampled in Trinidad. A and C, specimen from Progression (MNRJ 25244), left lateral and upper view respectively; B, specimens attached to Lepas anatifera (Linnaeus, 1758), collected from Ƒiking IƑ (MNRJ 25258); D, two specimens of M. zebra attached to Amphibalanus amphitrite (Darwin, 1854) from Alcazar; left (MNRJ 25255), right (MNRJ 25254). Scale bar: A, C and D = 0.5 cm; B = 1 cm.
FIGURE 3 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 3. Size structure based on shell basal length of Megabalanus zebra (Darwin, 1854) from specimens sampled in Trinidad and Curaçao (n=41). Three broken shells were not included.
FIGURE 6 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 6. Two specimens of Megabalanus zebra (Darwin, 1854) from a pier piling at Piscadero Harbor, Curaçao. A–F, MNRJ 25256; G–L, MNRJ 25257. A, shell top view; B, shell left lateral view; G and H, outer and inner view of right parietal plates, respectively; C, I and D, J, right scutum outer and inner faces; E, K and F, L, right tergum inner and outer faces. Scale bar: A and B = 1 cm, C- F = 6.5 mm; G, H = 0.7 mm; I-L = 5mm.
FIGURE 1 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 1. Landmark positions and names of scutum and tergum. Megabalanus zebra from Ƒiking IV hull, Chaguaramas, Trinidad (MNRJ 25251). A, inner face of right tergum; B, inner face of left scutum.
FIGURE 5 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 5. Left opercular plates of Megabalanus zebra (Darwin, 1854) (MNRJ 25254) collected from Alcazar at Chaguaramas, Trinidad. A and B, scutum inner and outer face; C and D, tergum inner and outer face. Scale bar = 1 mm.
FIGURE 7 in A Cryptic Invasion in the Western Atlantic: Presence of the Fouling Barnacle Megabalanus zebra (Darwin, 1854) (Crustacea, Cirripedia) in the Caribbean Sea
FIGURE 7. Megabalanus zebra (Darwin, 1854) cirri from three specimens collected from boat hulls at Chaguaramas, Trinidad. A, cirrus I; B, cirrus II; C, cirrus III; D, cirrus VI; E, F and G, detail of external side of outer rami median segments of cirrus III, IV and VI, respectively. Figures A, B, E, F and G from specimen MNRJ 25245; C and E from MNRH 25248; D from MNRJ 25255. Scale bar: A, B and C = 2 mm; D = 4 mm; E, F and G = 1 mm.
F. 50–52. Dacrydium zebra, NMW.Z.2001.061.00017 in Cryptic bivalves with descriptions of new species from the Rodrigues lagoon
F. 50–52. Dacrydium zebra, NMW.Z.2001.061.00017: (50) external (MontageTM); IGS (51) internal (SEM); (52) prodissoconch (SEM).
Viability of Natural Populations of Hypancistrus zebra (Silu-riformes, Loricariidae), Xingu, Brazil
Open the record for dataset details and reuse information.
Does the presence of a conspecific increase or decrease fear? Neophobia and habituation in zebra finches
<p>Neophobia, defined as the fear of novelty, can be exhibited when individuals encounter unfamiliar stimuli in their environment. Neophobia has been shown to both increase and decrease when individuals are with conspecifics. An increase in latency to contact new objects can be explained by the negotiation hypothesis which proposes that individuals in groups will negotiate who will approach novelty first, thereby delaying the first contact. This negotiation process could co-occur with and mask a potential effect of risk dilution, where individuals in groups should approach novel objects faster due to lower perceived risk in a social than non-social context. Here, we aim to test the risk dilution hypothesis using an experimental set-up that precluded negotiation among group members by physically separating dyads during social trials. We presented zebra finches (<i>Taeniopygia guttata</i>) with different novel objects in both social and non-social contexts. We also repeated the presentation of each object to investigate, for the first time to our knowledge, the effect of social context on the change in neophobia over repeated encounters (<i>i.e.,</i> habituation). We found that social context increased the latency to approach a novel object upon first presentation of objects (<i>i.e., </i>increased neophobia), but these latencies decreased faster over repeated presentations of the objects (<i>i.e., </i>faster habituation) compared to the non-social context. These results do not provide support for the risk dilution hypothesis regarding first encounters with objects (neophobia) but seem to support it over repeated object presentations (habituation). This suggests that the effect of social context is different on neophobia and habituation, possibly because they recruit different cognitive mechanisms. Future studies should investigate the impact of ecological and social conditions on decision-making upon first versus subsequent encounters with a novel object in social animals, as both processes can impact fitness costs and benefits of novelty responses. </p>
Links between personality traits and problem-solving performance in zebra finches (Taeniopygia guttata)
<p><span>Consistent individual differences in behaviour across time or contexts (i.e., personality types) have been found in many species and have implications for fitness. Likewise, individual variation in cognitive abilities has been shown to impact fitness. Cognition and personality are complex, multidimensional traits. However, p</span><span>revious work has generally examined the connection between a single personality trait and a single cognitive ability, yielding equivocal results. Links between personality and cognitive ability suggest that behavioural traits coevolved and highlight their nuanced connections. Here we examined individuals' performance on multiple personality tests and repeated problem-solving tests (each measuring innovative performance). </span>We assessed behavioural traits (dominance, boldness, activity, risk-taking, aggressiveness, and obstinacy) in 41 captive zebra finches. Birds' scores for boldness and obstinacy were consistent over two years. We also examined whether personality correlated with problem-solving performance on repeated tests. Our results indicate that neophobia, dominance, and obstinacy were related to successful solving, and less dominant, more obstinate birds solved the tasks quicker on average. Our results indicate the importance of examining multiple measures over a long period. <span>Future work that identifies links between personality and innovation in non-model organisms may elucidate the coevolution of these two forms of individual differences.</span></p>
Zebra's Euclidean tour on the {0,1}^15 grid-data file supporting Euclidean tours in fairy chess
<p>This data-file provides a valid Hamiltonian closed zebra's tour in the C(2,15) lattice. In this file is represented the polygonal chain of zebra's tour. </p>
Data from: High nest failure in a zebra finch population and persistent predation of a nest by a monitor lizard
<p>Predation is well known to have substantial effects on behaviour and fitness in many animals. In songbirds, nest predation is rarely observed directly, so that research focusses primarily on the consequences of predation and less on the behaviour of the predator. Here, we report predation data in a zebra finch (<em>Taeniopygia catanosis</em>) nest box population, highlighting a 22-min-long sequence, captured on video, of a sand goanna (<em>Varanus gouldii</em>) predating a zebra finch nest in the wild. This monitor lizard appeared to be extremely persistent with climbing and jumping up to the next box nine times, including three successive unsuccessful attempts that lead to a change in approach strategy. It removed all six nestlings from the nest box during those repeated approaches and consumed them. In combination with overall high predation rates in the study population we document here, the findings highlight the role that a single predator species can have on nest success and, thus potentially also breeding decisions and social organisation of the prey population. Specifically so in a species like the zebra finch which synchronises reproductive attempts through the use of social information acquired through nest inspections and which uses social hotspots where they could gather information on changes in local social composition due to the individualised signals they use.</p>
FIGURE 13. Anthidiellum zebra, MALE. A. FAcE. B. HABItUS, DORSAL. c. T6–T7, DORSAL VIEW. D. S5, VENtRAL VIEW. E. GONOStyLUS. F. S8. g. S7. H. S6. I. S5 in Taxonomic revision of the sub-Saharan Anthidiellum Cockerell (Apoidea: Megachilidae: Anthidiini)
FIGURE 13. Anthidiellum zebra, MALE. A. FAcE. B. HABItUS, DORSAL. c. T6–T7, DORSAL VIEW. D. S5, VENtRAL VIEW. E. GONOStyLUS. F. S8. g. S7. H. S6. I. S5.
FIG. 1 in The Sandy Zebra Shark: A New Color Morph of the Zebra Shark Stegostoma tigrinum, with a Redescription of the Species and a Revision of Its Nomenclature
FIG. 1. Schematic presentation of the morphology of S. tigrinum, including 52 morphometric measurements performed in the present study. Each number refers to a specific measurement further elaborated in Table 1.
FIG. 7 in The Sandy Zebra Shark: A New Color Morph of the Zebra Shark Stegostoma tigrinum, with a Redescription of the Species and a Revision of Its Nomenclature
FIG. 7. Specimens of S. tigrinum from Kenya in the transitional stage, shown from smallest to largest body size (no. 1–24) in dorsal and lateral view. No. 1–6: 565–670 mm TL, no. 7–12: 675–710 mm TL, no. 13–18: 740–800 mm TL, and no. 19–24: 802–975 mm TL.
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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.