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Food quality and the risk of light exposure affect patch‐choice decisions in the slime mold Physarum polycephalum
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Food quality and the risk of light exposure affect patch‐choice decisions in the slime mold Physarum polycephalum
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Food quality and the risk of light exposure affect patch‐choice decisions in the slime mold Physarum polycephalum
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Journal Article
Food quality and the risk of light exposure affect patch‐choice decisions in the slime mold Physarum polycephalum
2010
Overview
How individuals deal with multiple conflicting demands is an important aspect of foraging ecology, yet work on foraging behavior has typically neglected neurologically simple organisms. Here we examine the impact of an abiotic risk (light) and energetic status on the foraging decisions of a protist, the slime mold Physarum polycephalum. We examined patch choice in a “non‐risky” environment by presenting starved and non‐starved P. polycephalum amoebas with a choice between two shaded food patches (one high quality, one low quality). We next examined patch choice in the presence of a conflict between foraging risk (light exposure) and food quality by presenting amoebas with a choice between a shaded, low‐quality patch, and a light‐exposed, high‐quality patch. When both patches were shaded, 100% of amoebas selected the higher quality food patch, irrespective of food‐quality differences or the individual's energetic status. When light exposure and food quality conflicted, amoebas selected the patch with the higher food quality when the quality difference between the patches was high. When the quality difference between patches was small, amoebas selected the shaded, lower quality patch.
Publisher
Ecological Society of America
Subject
/ Animal, plant and microbial ecology
/ Biological and medical sciences
/ Diet
/ Ecology
/ Food
/ Foraging
/ Fundamental and applied biological sciences. Psychology
/ hunger
/ Light
/ Mold
/ Movement
/ Physarum polycephalum - physiology
/ protest
/ Protozoa
/ risk
/ risk and food reward conflicts
/ Slime
