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39 results for “predatory behavior”
Fig. 4 in Predatory behaviors: Pristimantis savagei (Anura: Craugastoridae) as prey of Trechalea sp. spiders (Araneae: Trechaleidae) in a sector of the Piedemonte Llanero, Villavicencio, Colombia
Fig. 4. Trechalea sp. individual secreting its digestive juices.
Artificial selection for predatory behavior results in dietary niche differentiation in an omnivorous mammal
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Behavioral interactions between bacterivorous nematodes and predatory bacteria in a synthetic community
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Fig. 4 in Physical evidence of predatory behavior in Tyrannosaurus rex
Fig. 4. Graph of tooth dimensions for T. rex, Albertosaurus, and Nanotyrannus, compared with that of the embedded theropod tooth (A and B). When the ICL is plotted against the DCT (A), the three examined taxa are clearly separated, with a large gap existing between T. rex and Albertosaurus, and minor overlap between Albertosaurus and Nanotyrannus. The embedded theropod tooth falls only within the region occupied by T. rex (bold black line in A) and does not overlap with the other two taxa. Graphed ranges of tooth denticles per cm (B) indicates a similar trend, in which the embedded theropod tooth only overlaps T. rex and does not match either Albertosaurus or Nanotyrannus.
Fig. 1 in Physical evidence of predatory behavior in Tyrannosaurus rex
Fig. 1. Depiction of a hadrosaur skeleton showing the position in the tail of the fused vertebrae (A) and a lateral view of the affected vertebrae with the circle indicating the location of the theropod tooth (B).
Fig. 3 in Physical evidence of predatory behavior in Tyrannosaurus rex
Fig. 3. Lateral view of embedded tooth crown showing well-developed blood grooves oriented obliquely toward the base and large, chisel-shaped mesial denticles typical of T. rex (60); (Scale bar: 5 mm.)
FIGURE 4. A in Description of Pericelis flavomarginata sp. nov. (Polycladida: Cotylea) and its predatory behavior on a scaleworm
FIGURE 4. A. Freshly dead specimen of Iphione muricata (Savigny in Lamarck, 1818) (ICHUM 6123); arrowhead indicates a feeding scar made by P. flavomarginata sp. nov. B. Pericelis flavomarginata sp. nov. (ICHUM 6121, paratype), dorsal view, with an almost empty intestine. Scale bars: 1 cm.
FIGURE 2 in Description of Pericelis flavomarginata sp. nov. (Polycladida: Cotylea) and its predatory behavior on a scaleworm
FIGURE 2. Pericelis flavomarginata sp. nov. Photographs of a living specimen (A–C) and a specimen after being cleared in xylene (D); sketch of eyespot distribution (E). A. ICHUM 6116 (holotype), entire animal, dorsal view. B. ICHUM 6116 (holotype), entire animal, ventral view. C. ICHUM 6122 (paratype), magnification of tentacles. D. ICHUM 6122 (paratype), magnification of anterior body. E. Cerebral, frontal, marginal, and tentacular eyespots distribution. Abbreviations: ce, cerebral eyespots; cg, cement glands; fe, frontal eyespots; me, marginal eyespots; ph, pharynx; t, marginal tentacles; te, tentacular eyespots. Scale bars: A, B, 5 mm; C–E, 1 mm.
FIGURE 5 in Description of Pericelis flavomarginata sp. nov. (Polycladida: Cotylea) and its predatory behavior on a scaleworm
FIGURE 5. Maximum likelihood phylogenetic tree based on partial sequences (967 bp) of the 28S rDNA. Numbers near nodes are the posterior probability and bootstrap values, respectively.
Data from: Ecomorphological determinations in the absence of living analogs: the predatory behavior of the marsupial lion (Thylacoleo carnifex) as revealed by elbow-joint morphology
Thylacoleo carnifex, or the "pouched lion" (Mammalia: Marsupialia: Diprotodontia: Thylacoleonidae) was a carnivorous marsupial that inhabited Australia during the Pleistocene. Although today all authors agree that Thylacoleo had a hypercarnivorous diet, the way in which it killed its prey remains uncertain. Here we use geometric morphometrics to capture the shape of the elbow joint (i.e., the posterior articular surface of the distal humerus) in a wide sample of extant mammals of known behavior to determine how elbow anatomy reflects forearm use. We then employ this information to investigate the predatory behavior of Thylacoleo. A Principal Components Analysis indicates that Thylacoleo is the only carnivorous mammal to cluster with extant taxa that have an extreme degree of forearm maneuverability, such as primates and arboreal xenarthrans (pilosans). A Canonical Variates Analysis confirms that Thylacoleo had forearm maneuverability intermediate between wombats (terrestrial) and arboreal mammals, and a much greater degree of maneuverability than any living carnivoran placental. A Linear Discriminant Analysis computed to separate the elbow morphology of arboreal mammals from terrestrial ones shows that Thylacoleo was primarily terrestrial but with some climbing abilities. We infer from our results that Thylacoleo used its forelimbs for grasping or manipulating prey to much higher degree than its supposed extant placental counterpart, the African lion (Panthera leo). The use of the large and retractable claw on the semi-opposable thumb of Thylacoleo for potentially slashing and disemboweling prey is discussed in the light of this new evidence.
Data from: Predatory fish sounds can alter crab foraging behavior and influence bivalve abundance
The risk of predation can have large effects on ecological communities via changes in prey behaviour, morphology and reproduction. Although prey can use a variety of sensory signals to detect predation risk, relatively little is known regarding the effects of predator acoustic cues on prey foraging behaviour. Here we show that an ecologically important marine crab species can detect sound across a range of frequencies, probably in response to particle acceleration. Further, crabs suppress their resource consumption in the presence of experimental acoustic stimuli from multiple predatory fish species, and the sign and strength of this response is similar to that elicited by water-borne chemical cues. When acoustic and chemical cues were combined, consumption differed from expectations based on independent cue effects, suggesting redundancies among cue types. These results highlight that predator acoustic cues may influence prey behaviour across a range of vertebrate and invertebrate taxa, with the potential for cascading effects on resource abundance.
Data from: Genomic response to selection for predatory behavior in a mammalian model of adaptive radiation
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Data from: Ecomorphological determinations in the absence of living analogs: the predatory behavior of the marsupial lion (Thylacoleo carnifex) as revealed by elbow-joint morphology
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Data from: Predatory behavior of the cave shrimp Creaseria morleyi (Creaser, 1936) (Caridea: Palaemonidae), the blind hunter of the Yucatán cenotes, Mexico
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Data from: Predatory fish sounds can alter crab foraging behavior and influence bivalve abundance
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FIGURE 5 in Linking burrow morphology to the behaviors of predatory soil arthropods: Applications to continental ichnofossils
FIGURE 5. Burrow-associated activities and behaviors observed among the studied arthropod predators. A) Hysterocrates gigas (at arrow) dwelling within a shallow burrow with an enlarged terminal chamber. B) Two specimens of Pandinus imperator dwelling within a burrow complex. C) Scolopendra polymorpha moving through a burrow complex. D) Scolopendra polymorpha engaged in ambush predation positioned just below the burrow opening. E) Hysterocrates gigas engaged in ambush predation braced within the vertical shaft below the burrow opening. F) Aphonopelma chalcodes (at arrow) waiting within its burrow for prey to enter the tunnel. G) Pandinus imperator (at arrow) waiting within its burrow for prey.
Fig. 2 in Physical evidence of predatory behavior in Tyrannosaurus rex
Fig. 2. CT scans of the fused hadrosaur vertebrae, showing embedded theropod tooth and reactive bone (A–c). Longitudinal slice through the fused vertebrae shows the substantial overgrowth of reactive bone on the outside of the centra, while the articular surfaces remain largely unaffected (A). Two oblique slices through the vertebrae show the embedded theropod tooth in cross-section and the reactive bone that partially surrounds it (B and c). (Scale bars: A, 20 mm and B and c, 10 mm.)
FIGURE 3 in Description of Pericelis flavomarginata sp. nov. (Polycladida: Cotylea) and its predatory behavior on a scaleworm
FIGURE 3. Pericelis flavomarginata sp. nov., ICHUM 6116 (holotype), schematic diagram (A) and photomicrographs of sagittal sections (B–F). A. Copulatory complex. B. Common gonopore of male and female atriums. C. Seminal vesicle. D. Penis papilla and female copulatory apparatus. E. Uterine vesicle. F. Sucker. Abbreviations: cg, cement glands; cog, common gonopore; cp, cement pouch; ed, ejaculatory duct; fa, female atrium; ma, male atrium; pp, penis papilla; spd, sperm duct; su, sucker; sv, seminal vesicle; uv, uterine vesicle; va, vagina. Scale bars: 300 μm.
FIGURE1 in Description of Pericelis flavomarginata sp. nov. (Polycladida: Cotylea) and its predatory behavior on a scaleworm
FIGURE1. Map showing distribution of P. flavomarginata sp. nov. 1, Nomaike, Kagoshima; 2, Bonotsu, Kagoshima; 3, Koganezaki, Shizuoka; 4, the Ogasawara Islands. Star indicates the type locality.
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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.