Volume 195, Number 1 | January 2020

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Free AccessMasthead
195(1)
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Free Access2019 American Society of Naturalists Awards
195(1), pp. ii–iii
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E-Articles

Free AccessThe Evolutionary Origin of Associative Learning
Anselmo C. Pontes, Robert B. Mobley, Charles Ofria, Christoph Adami, and Fred C. Dyer
195(1), pp. E1–E19
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Free AccessWhy Do Phytoplankton Evolve Large Size in Response to Grazing?
Pedro Branco, Martijn Egas, Spencer R. Hall, and Jef Huisman
195(1), pp. E20–E37
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Articles

No AccessThe Evolution of Immigration Strategies Facilitates Niche Expansion by Divergent Adaptation in a Structured Metapopulation Model
Éva Kisdi, Helene C. Weigang, and Mats Gyllenberg
195(1), pp. 1–15
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Free AccessNiche Construction Affects the Variability and Strength of Natural Selection
Andrew D. Clark, Dominik Deffner, Kevin Laland, John Odling-Smee, and John Endler
195(1), pp. 16–30
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No AccessSpatial Population Structure Determines Extinction Risk in Climate-Induced Range Shifts
Christopher Weiss-Lehman and Allison K. Shaw
195(1), pp. 31–42
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No AccessDecreased Precipitation Predictability Negatively Affects Population Growth through Differences in Adult Survival
Guillem Masó, Arpat Ozgul, and Patrick S. Fitze
195(1), pp. 43–55
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Free AccessDeer Indirectly Alter the Reproductive Strategy and Operational Sex Ratio of an Unpalatable Forest Perennial
Lalasia Bialic-Murphy, Christopher D. Heckel, Robert M. McElderry, and Susan Kalisz
195(1), pp. 56–69
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Free AccessComparing Life Histories across Taxonomic Groups in Multiple Dimensions: How Mammal-Like Are Insects?
Adam T. Bakewell, Katie E. Davis, Robert P. Freckleton, Nick J. B. Isaac, and Peter J. Mayhew
195(1), pp. 70–81
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No AccessTestosterone Modulates Status-Specific Patterns of Cooperation in a Social Network
T. Brandt Ryder, Roslyn Dakin, Ben J. Vernasco, Brian S. Evans, Brent M. Horton, and Ignacio T. Moore
195(1), pp. 82–94
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No AccessFecundity-Longevity Trade-Off, Vertical Transmission, and Evolution of Virulence in Sterilizing Pathogens
Eva Janoušková and Luděk Berec
195(1), pp. 95–106
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Notes

No AccessThe Effects of Body Mass on Immune Cell Concentrations of Mammals
Cynthia J. Downs, Ned A. Dochtermann, Ray Ball, Kirk C. Klasing, and Lynn B. Martin
195(1), pp. 107–114
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No AccessEvolutionary Rescue from a Wave of Biological Invasion
J. David Van Dyken
195(1), pp. 115–128
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