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73 results for “Crypsis”
Data from: Orientation to the sun by animals and its interaction with crypsis
1. Orientation with respect to the sun has been observed in a wide range of species and has generally been interpreted in terms of thermoregulation and/or ultraviolet (UV) protection. For countershaded animals, orientation with respect to the sun may also result from the pressure to exploit the gradient of coloration optimally to enhance crypsis. 2. Here, we use computational modelling to predict the optimal countershading pattern for an oriented body. We assess how camouflage performance declines as orientation varies using a computational model that incorporates realistic lighting environments. 3. Once an optimal countershading pattern for crypsis has been chosen, we determine separately how UV protection/irradiation and solar thermal inflow fluctuate with orientation. 4. We show that body orientations that could optimally use countershading to enhance crypsis are very similar to those that allow optimal solar heat inflow and UV protection. 5. Our findings suggest that crypsis has been overlooked as a selective pressure on orientation and that new experiments should be designed to tease apart the respective roles of these different selective pressures. We propose potential experiments that could achieve this.
FIGURE 7 in Attack on crypsis: Molecular and morphological study of Dendrodoris Ehrenberg 1831 (Mollusca: Gastropoda: Nudibranchia) from the Mediterranean Sea and Northern Atlantic Ocean reinstates Dendrodoris temarana Pruvot-Fol, 1953
FIGURE 7. Geographic distribution of Dendrodoris temarana.
FIGURE 6 in Attack on crypsis: Molecular and morphological study of Dendrodoris Ehrenberg 1831 (Mollusca: Gastropoda: Nudibranchia) from the Mediterranean Sea and Northern Atlantic Ocean reinstates Dendrodoris temarana Pruvot-Fol, 1953
FIGURE 6. Dendrodoris temarana penial hooks.
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer
1. The migration of humpback whales to and from their breeding grounds results in a short, critical time period during which neonatal calves must acquire sufficient energy via suckling from their fasting mothers to survive the long return journey. 2. Understanding neonate suckling behaviour is critical for understanding the energetics and evolution of humpback whale migratory behaviour and for informing conservation efforts, but despite its importance, very little is known about the details, rate and behavioural context of this critical energy transfer. 3. To address this pertinent data gap on calf suckling behaviour, we deployed multi-sensor Dtags on eight humpback whale calves and two mothers allowing us to analyse detailed suckling and acoustic behaviour for a total of 68·8 h. 4. Suckling dives were performed 20·7 ± 7% of the total tagging time with the mothers either resting at the surface or at depth with the calves hanging motionless with roll and pitch angles close to zero. 5. Vocalisations between mother and calf, which included very weak tonal and grunting sounds, were produced more frequently during active dives than suckling dives, suggesting that mechanical stimuli rather than acoustic cues are used to initiate nursing. 6. Use of mechanical cues for initiating suckling and low level vocalisations with an active space of <100 m indicate a strong selection pressure for acoustic crypsis. 7. Such inconspicuous behaviour likely reduces the risk of exposure to eavesdropping predators and male humpback whale escorts that may disrupt the high proportion of time spent nursing and resting, and hence ultimately compromise calf fitness. 8. The small active space of the weak calls between mother and calf is very sensitive to increases in ambient noise from human encroachment thereby increasing the risk of mother–calf separation.
Fig. 3. A in The almost invisible league: crypsis and association between minute fishes and shrimps as a possible defence against visually hunting predators
Fig. 3. A mixed column of larval eleotrid fish Eleotris pisonis and gerreid fish Eucinostomus melanopterus, associated with palaemonid shrimps Palaemon pandaliformis, moving upstream in the shallows of a coastal streamlet in Southeastern Brazil. The moving column is closely followed by larger larvae and juveniles of the predaceous centropomid fish Centropomus mexicanus in slightly deeper water. Some individuals marked in front of head to render them easier to spot (Cm= C. mexicanus, Em= E. melanopterus, Ep= E. pisonis); shrimps not visible against the background.
Data from: Coarse dark patterning functionally constrains adaptive shifts from aposematism to crypsis in strawberry poison frogs
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Data from: Camouflaging moving objects: crypsis and masquerade
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Data from: An ambusher’s arsenal: chemical crypsis in the puff adder (Bitis arietans)
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Data from: Orientation to the sun by animals and its interaction with crypsis
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Data from: Seasonal plasticity in anti-predatory strategies: matching of color and color preference for effective crypsis
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Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer
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Data from: Defeating crypsis: detection and learning of camouflage strategies
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FIGURE 24 in Disentangling vines: a study of morphological crypsis and genetic divergence in vine snakes (Squamata: Colubridae: Ahaetulla) with the description of five new species from Peninsular India
FIGURE 24. Images of live uncollected individuals of Ahaetulla perroteti from the Nilgiris showing sexual dimorphism, (a) Head lateral of male, (b) Head lateral of female, (c) Head dorsal of female, (d) Threat display, (e) Whole animal.
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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)
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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.