Anticipatory Reproduction and Population Growth in Seed Predators
- 22 December 2006
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 314 (5807), 1928-1930
- https://doi.org/10.1126/science.1135520
Abstract
Mast seeding, the intermittent, synchronous production of large seed crops by a population of plants, is a well-known example of resource pulses that create lagged responses in successive trophic levels of ecological communities. These lags arise because seed predators are thought capable of increasing reproduction and population size only after the resource pulse is available for consumption. The resulting satiation of predators is a widely cited explanation for the evolution of masting. Our study shows that both American and Eurasian tree squirrels anticipate resource pulses and increase reproductive output before a masting event, thereby increasing population size in synchrony with the resource pulse and eliminating the population lag thought to be universal in resource pulse systems.Keywords
This publication has 27 references indexed in Scilit:
- The Mystery of Masting in TreesAmerican Scientist, 2005
- VARIATION IN VIABILITY SELECTION AMONG COHORTS OF JUVENILE RED SQUIRRELS (TAMIASCIURUS HUDSONICUS)Evolution, 2003
- The numerical response: rate of increase and food limitation in herbivores and predatorsPhilosophical Transactions Of The Royal Society B-Biological Sciences, 2002
- The Determinants of Optimal Litter Size in Free-Ranging Red SquirrelsEcology, 2000
- VERTEBRATE RESPONSES TO SPATIOTEMPORAL VARIATION IN SEED PRODUCTION OF MAST-FRUITING DIPTEROCARPACEAEEcological Monographs, 2000
- Effects of Hoard Manipulations on Life History and Reproductive Success of Female Red Squirrels (Tamiasciurus hudsonicus)Journal of Mammalogy, 1997
- Population Fluctuations of Mast-Eating Rodents Are Correlated with Production of AcornsJournal of Mammalogy, 1996
- Energy Allocation in Mammalian ReproductionAmerican Zoologist, 1988
- White Spruce Cone Production and Prediction of Cone CropsCanadian Journal of Forest Research, 1972
- Seed Predation by AnimalsAnnual Review of Ecology and Systematics, 1971