Catherine L. Peichel

Phylogenomics of Cypriniformes, the most diverse order of freshwater fishes: consensus, challenges and limitations

This study presents the first comprehensive phylogenomic analysis of Cypriniformes, establishing a robust backbone topology and identifying unresolved conflicts in evolutionary relationships.

A chromosomal inversion acts as a hotspot for divergence in multiple ecologically relevant traits

The paper tests if chromosomal inversions concentrate small genetic effects on multiple traits in threespine stickleback, finding support for their role in local adaptation.

Heterogeneous evolution of effective recombination landscapes across percomorph fishes

The paper quantifies recombination landscape divergence across percomorph fish species using PRDI and finds divergence increases with genetic differentiation and divergence time, with variation among species pairs.

Disentangling unique site-specific and shared habitat-level adaptation in a classic system of repeated evolution

The paper transplants stickleback populations across habitats to separate shared and site-specific adaptation, finding site-specific adaptation explains most fitness variation.

Recombination on 'non-recombining' sex chromosomes: empirical insights from the blackspotted stickleback

The paper identifies a recombination event within a non-recombining sex chromosome in blackspotted sticklebacks, challenging the notion that recombination suppression is irreversible.

Among-population variation in the threespine stickleback ( Gasterosteus aculeatus ) liver metabolome: effects of ancestry and environment

This study examines metabolome variation in threespine stickleback across populations, showing both genetic and environmental influences on liver metabolites.

Disassortative mating in replicated secondary contact experiments in nature

The paper tests mating patterns in replicated secondary contact experiments and finds disassortative mating instead of expected assortative mating or reproductive isolation.

Convergent genome streamlining accompanies independent miniaturization in the world's smallest fishes

This study investigates the genomic correlates of miniaturization in Cypriniformes, finding convergent genome streamlining in progenetic miniatures but not proportioned dwarfs.

Reference genomes of four miniature and non-miniature cypriniform fishes inhabiting acidic peat-swamp forest blackwaters of Southeast Asia

The paper presents high-quality reference genomes for four cypriniform fish species from acidic peat-swamp blackwaters, highlighting genomic features related to miniaturization and adaptation.

Intrinsic fitness differences outweigh environmental matching in shaping introduction outcomes in nature

This study introduces >12,000 threespine stickleback into nine lakes to test if environmental matching or intrinsic population traits predict introduction success, finding intrinsic traits are more important.

Lake size shapes the relationship between body mass and gut microbiota in threespine stickleback (Gasterosteus aculeatus)

This study shows that lake size influences how body mass relates to gut microbiota diversity in threespine stickleback fish, with intermediate-sized lakes showing the most diverse microbiota.

Hi-reComb: constructing recombination maps from bulk gamete Hi-C sequencing

Hi-reComb estimates recombination maps from bulk gamete Hi-C data, showing accurate results in fish sperm and enabling structural variant analysis.

The role of alternative splicing in marine-freshwater divergence in threespine stickleback

This study investigates the role of alternative splicing in adaptation to marine and freshwater habitats in threespine stickleback, finding that differentially spliced genes are enriched in regions of genetic divergence and QTLs.

The fourspine stickleback (Apeltes quadracus) has an XY sex chromosome system with polymorphic inversions on both X and Y chromosomes

The paper identifies an XY sex chromosome system in fourspine stickleback with polymorphic inversions on both X and Y chromosomes, revealing new insights into sex chromosome evolution.

Destabilized host-parasite dynamics in newly founded populations

The paper experimentally studies host-parasite dynamics in newly founded stickleback populations, finding destabilized infection rates and rapid eco-evolutionary responses.

Evolution of the canonical sex chromosomes of the guppy and its relatives

This paper reviews and reanalyzes data on the evolution of sex chromosomes in guppies and their relatives, finding no nonrecombining sex determining region or evolutionary strata in P. reticulata.