A. O. Bergland

Spatial and temporal variation in abundance of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in the eastern United States

This study examines the spatial and temporal variation in the abundance of the invasive African fig fly Zaprionus indianus in the eastern United States, showing its susceptibility to cold and the need for systematic sampling.

Maternal control of spontaneous dormancy termination in Daphnia pulex

This study shows maternal effects influence diapause termination timing in Daphnia pulex, leading to synchronized hatching and delayed reproduction in offspring.

A cosmopolitan inversion drives seasonal adaptation in overwintering Drosophila

The paper identifies a chromosomal inversion as a driver of seasonal adaptation in Drosophila melanogaster by analyzing genomic and phenotypic data from orchard populations.

Unique signals of clinal and seasonal allele frequency change at eQTLs in Drosophila melanogaster

The paper examines allele frequency changes at eQTLs in Drosophila melanogaster across latitudinal clines and seasons, finding clinal eQTLs are more predictable than seasonal ones.

Stabilizing selection shapes variation in phenotypic plasticity

The paper tests stabilizing selection on phenotypic plasticity in Daphnia pulex by analyzing genetic variation in anti-predator defenses under predation risk.

Polygenic variation in sexual investment across an ephemerality gradient in Daphnia pulex

The paper investigates polygenic variation in sexual investment in Daphnia pulex across an ephemerality gradient, finding that clonal diversity, not genetic diversity, varies with ephemerality and identifying multiple QTL for male production.

Broad geographic sampling reveals predictable, pervasive, and strong seasonal adaptation in Drosophila

The paper identifies parallel seasonal allele frequency shifts in Drosophila melanogaster across North America and Europe, linking environmental conditions to genomic responses to selection.

Accurate allele frequencies from ultra-low coverage pool-seq samples in evolve-and-resequence experiments

This paper introduces a method to accurately estimate allele frequencies from low-coverage pool-seq data in evolve-and-resequence experiments using haplotype inference.

Phenotypic plasticity, but not genetic adaptation, underlies seasonal variation in the cold hardening response of Drosophila melanogaster

Rapid seasonal evolution in innate immunity of wild Drosophila melanogaster

The paper investigates rapid seasonal evolution in innate immunity of Drosophila melanogaster by analyzing immune responses and genetic variation across populations.

Segregation lift: A general mechanism for the maintenance of polygenic variation under seasonally fluctuating selection.

The paper introduces a mechanism called segregation lift that explains how polygenic variation can be maintained under seasonally fluctuating selection by considering dominance and epistasis in multi-locus models.

Inferring local movement of pathogen vectors among hosts

The paper uses NextRAD sequencing to infer movement of potato psyllids between host plants, identifying genetic similarities and differences that suggest potential new host species.