What question did this study set out to answer?

To determine how individual-level mechanistic processes, specifically maternal effects on offspring behavior, drive large-scale community dynamics and species replacement.

February 20, 2015Science

Cycles of species replacement emerge from locally induced maternal effects on offspring behavior in a passerine bird

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To determine how individual-level mechanistic processes, specifically maternal effects on offspring behavior, drive large-scale community dynamics and species replacement.
Conducted extensive sampling across broad temporal and spatial scales tracking two competing bluebird species.
Evaluated maternal manipulation of offspring sex relative to birth order under varying local resource conditions alongside offspring aggression and dispersal patterns.
Western bluebird mothers biased the birth order of offspring by sex in direct response to local resource availability.
Birth order shifts altered offspring aggression and dispersal, enabling rapid population density spikes.
The resulting surge in aggressive competitors led to the predictable, large-scale replacement of the sister bluebird species.

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Implication

Ecological study reveals maternal control of offspring traits drives species replacement in bluebirds, suggesting individual behavior shapes broad community dynamics.

Cite This Study

Duckworth et al. (2015) studied this question.

synapsesocial.com/papers/6aa02b3c6fb3bd2270351819 https://doi.org/10.1126/science.1260154

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Implication

Ecological study reveals maternal control of offspring traits drives species replacement in bluebirds, suggesting individual behavior shapes broad community dynamics.

Cycles of species replacement emerge from locally induced maternal effects on offspring behavior in a passerine bird

Key Points

Discussion

Implication

Cite This Study

Cycles of species replacement emerge from locally induced maternal effects on offspring behavior in a passerine bird

Key Points

Discussion

Implication

Cite This Study

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