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8 results for “masting behavior”
Data from: The selective advantage of a mast-flowering behavior in Veratrum album subsp. oxysepalum: Implications of the predator satiation hypothesis
<p><strong><span>Premise</span></strong><span>: The synchronous highly variable flower or seed production among years within a population– i.e., masting – has been reported in numerous perennial plants. Although ecological advantages of masting are recognized as the enhancement of pollination efficiency and/or escape from predator attack, little is known about the degree of these advantages and the variation in masting behavior among populations of conspecific plants.</span></p> <p><strong><span>Methods</span></strong><span>: </span><span>We observed flowering ramet density and reproductive success (fruit-set success and herbivorous damage) of a perennial herb, <em>Veratrum</em> <em>album</em> subsp. <em>oxysepalum</em>, across six lowland and six alpine populations in northern Japan during 2–3 years. We then analyzed the relationship between floral density and reproductive success to clarify the ecological significance of mast flowering. Furthermore, flowering intervals of individual plants were estimated by counting annual scars on rhizomes.</span></p> <p><strong><span>Results</span></strong><span>: </span><span>Mast flowering was observed in most populations, but flowering intervals of individual plants were shorter in the alpine populations compared with the lowland populations. Floral damage by stem borers (dipteran larvae) and seed predation by lepidopteran larvae were intense in the lowland populations. The seed production of individual ramets increased with higher floral density owing to the effective avoidance of floral-stem damage and seed predation. Although stem borers were absent in alpine habitat, seed predation decreased with higher floral density also in the alpine populations. Pollination success was independent of floral density in both the alpine and lowland populations. </span></p> <p><strong><span>Conclusions</span></strong><span>: </span><span>These results strongly support the predator satiation hypothesis for the mast flowering behavior in this species.</span></p>
Data from: The selective advantage of a mast-flowering behavior in Veratrum album subsp. oxysepalum: Implications of the predator satiation hypothesis
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Periodical cicada emergences affect masting behavior of oaks
<p>Oaks (<em>Quercus</em> spp.) are well-known "masting" species exhibiting highly variable and synchronized acorn production. We investigated the hypothesis that periodical cicadas (<em>Magicada</em> spp.), well-known to have strong effects on the ecosystems in which they occur, affect acorn production of oaks through their xylem feeding habits as nymphs, the oviposition damage they inflect as adults during emergences, or the nutrient pulse resulting from the decomposition of their bodies following breeding. We found negative effects on acorn production during emergence years and the year following emergences, and enhanced acorn production two years post-emergence. We also found evidence suggesting a significant effect of cicada emergences on spatial synchrony of acorn production by trees growing within the range of the same cicada brood compared to different broods. These results demonstrate that periodical cicadas act as a trophic environmental "veto" depressing acorn production during and immediately following emergences, after which the nutrient pulse associated with the cicada's demise enhances oak reproduction.</p>
Periodical cicada emergences affect masting behavior of oaks
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Data from: A mast-seeding desert shrub regulates population dynamics and behavior of its heteromyid dispersers
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Mast cells link immune sensing to antigen avoidance behavior [stomach]
GEO Series GSE225053. Mus musculus. 48 samples. Type: Expression profiling by high throughput sequencing.
Mast cells link immune sensing to antigen avoidance behavior [intestine]
GEO Series GSE224895. Mus musculus. 43 samples. Type: Expression profiling by high throughput sequencing.
Mast cells link immune sensing to antigen avoidance behavior
GEO Series GSE225054. Mus musculus. 91 samples. Type: Expression profiling by high throughput sequencing.
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