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12 results for “Ecological pressures”
Data from: Ecological and social pressures interfere with homeostatic sleep regulation in the wild
<p>Sleep is fundamental to the health and fitness of all animals. The physiological importance of sleep is underscored by the central role of homeostasis in determining sleep investment – following periods of sleep deprivation, individuals experience longer and more intense sleep bouts. Yet, most sleep research has been conducted in highly controlled settings, removed from evolutionarily-relevant contexts that may hinder the maintenance of sleep homeostasis. Using tri-axial accelerometry and GPS to track the sleep patterns of a group of wild baboons (<i>Papio anubis</i>), we found that ecological and social pressures indeed interfere with homeostatic sleep regulation. Baboons sacrificed time spent sleeping when in less familiar locations and when sleeping in proximity to more group-mates, regardless of how long they had slept the prior night or how much they had physically exerted themselves the preceding day. Further, they did not appear to compensate for lost sleep via more intense sleep bouts. We found that the collective dynamics characteristic of social animal groups persist into the sleep period, as baboons exhibited synchronized patterns of waking throughout the night, particularly with nearby group-mates. Thus, for animals whose fitness depends critically on avoiding predation and developing social relationships, maintaining sleep homeostasis may be only secondary to remaining vigilant when sleeping in risky habitats and interacting with group-mates during the night. Our results highlight the importance of studying sleep in ecologically relevant contexts, where the adaptive function of sleep patterns directly reflects the complex trade-offs that have guided its evolution.</p>
Data from: Ecological and social pressures interfere with homeostatic sleep regulation in the wild
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Ecological interactions in breast cancer: Cell facilitation promotes growth and survival under drug pressure
<p>Spheroids of different composition (100% sensitive, 50% sensitive – 50% resistant, 100% resistant) were initiated from Venus-labeled CAMA-1 and mCherry-labeled CAMA-1_ribociclib_resistant cells and were subjected to 1 uM ribociclib treatment. After 11 days, speroids were harvested, washed and cell suspensions were viably frozen for single cell RNA-seq analysis. </p>
Figure 1. A in The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius
Figure 1. A map of the geographical location of the island of Rodrigues showing the four protected areas in the north and north west (solid lines) and the approximate area of Ile aux Fous (nonprotected, dotted line).
Figure 3. A in The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius
Figure 3. A schematic diagram of a transect set-up and the search path that was used for recording the octopus dens and the invertebrate benthos. The blue circle indicates the position of the painted rock, a marker to allow a second transect within 100 m of the first one to be measured. The dashed lines show the position of the outer tape measures which marked out the sample area, the small arrows show the direction each surveyor looked either side of the inner belt transect (2 m either side), the red lines show the position of the inner three transects that were used for recording, the long arrows show the direction each surveyor swam along each transect and the small numbers show the distance along the bottom tape measure that the three inner transects were placed.
Figure 5 in The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius
Figure 5. Figure with the average plus standard error of the number of counted holes per region for the first sampling occasion (a) and the second sampling occasion(b). White = Area 1 (Ile aux Fous), stripes = Area 2 (Anse aux Anglais), black = Area 3 (Grand Bassin).
Figure 2. A in The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius
Figure 2. A map of the 12 survey locations within the Rodrigues lagoon, with labels for each station number (square = stations 1A-1D, stars = stations 2A-2D, triangles = stations 3A-3D). The grey dashed line shows the edge of the fringing lagoon. The sites were chosen based on specific coral biotopes as determined during ground-truthing surveys (Turner and Chapman 2004) The location of the Shoals Rodrigues base centre is shown to illustrate that the sites were also chosen because of proximity to the base.
Figure 4 in The den ecology and the effects of fishing pressure on the distribution of Octopus cyanea (Octopodidae: Mollusca) in Rodrigues lagoon, Rodrigues, Mauritius
Figure 4. The total number of octopus observed per station in the lagoon over the course of two different sampling periods with a 23-day gap between sampling; 1 = Ile aux Fous (moderate fishing pressure), 2 = Anse aux Anglais (high fishing pressure) and 3 = Grand Bassin (low fishing pressure).
Data from: Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers
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Supplementary material 1 from: Maissour A, Benamar S (2019) Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers. BioRisk 14: 1-14. https://doi.org/10.3897/biorisk.14.30319
: Data type: occurences
Impact of Rotavirus Vaccination on Hospital Pressures at a Large Paediatric Hospital in the UK: an Ecological Study
ClinicalTrials.gov study NCT03271593. IPD Sharing: Not stated. Countries: 0. Publications: 1.
Ecological interactions in breast cancer: Cell facilitation promotes growth and survival under drug pressure
GEO Series GSE193278. Homo sapiens. 3 samples. Type: Expression profiling by high throughput sequencing.
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