Speciation is generally regarded to result from the splitting of a single lineage. An alternative
is hybrid speciation, considered to be extremely rare, in which two distinct lineages …

Protected areas (PAs) are a foundational and essential strategy for reducing biodiversity loss.
However, many PAs around the world exist on paper only; thus, while logging and habitat …

Background To understand speciation and the maintenance of taxa as separate entities, we
need information about natural hybridization and gene flow among species. Results …

Identifying the genomic changes that control morphological variation and understanding how
they generate diversity is a major goal of evolutionary biology. In Heliconius butterflies, a …

Recent adaptive radiations provide excellent model systems for understanding speciation,
but rapid diversification can cause problems for phylogenetic inference. Here we use gene …

Among animals, evidence for homoploid hybrid speciation (HHS, ie. the creation of a hybrid
lineage without a change in chromosome number) was limited until recently to the virgin …

Most genetic studies of Haldane's rule, in which hybrid sterility or inviability affects the
heterogametic sex preferentially, have focused on Drosophila. It therefore remains unclear to what …

Homoploid hybrid speciation (HHS) is the establishment of a novel species through introgressive
hybridization without a change in chromosome number. We discuss different routes by …

Abstract.— Recent studies, primarily in Drosophila, have greatly advanced our understanding
of Haldane's rule, the tendency for hybrid sterility or inviability to affect primarily the …

The mimetic butterflies Heliconius erato and Heliconius melpomene have undergone parallel
radiations to form a near-identical patchwork of over 20 different wing-pattern races across …