Understanding the origins of species richness patterns is a fundamental goal in ecology and
evolutionary biology. Much research has focused on explaining two kinds of species …

An annotated synthesis of textbook definitions of parasitism is presented. Most definitions
declare parasitism is a long-lasting relationship between individuals of different species …

The rarity of parthenogenetic species is typically attributed to the reduced genetic variability
that accompanies the absence of sex, yet natural parthenogens can be surprisingly …

Coevolutionary antagonism generates relentless selection that can favour genetic
exchange, including transfer of antibiotic synthesis and resistance genes among bacteria …

Unisexual vertebrates typically form through hybridization events between sexual species in
which reproductive mode transitions occur in the hybrid offspring. This evolutionary history is …

Simple Summary Polyploidization, or whole-genome duplication (WGD), represents a
dramatic event in evolution. Although its occurrence is much rarer in animals than in plants …

We genotyped multiple populations of all seven parthenogenetic species of rock lizards,
genus Darevskia, as well as their putative sexual parental populations, using double digest …

Caves constitute ideal study systems for investigating adaptation and speciation, as the
abiotic conditions shared by aphotic habitats exert a set of environmental filters on their …

The zebra shark Stegostoma tigrinum, a popular aquarium fish, is an endangered species
that is known to readily reproduce both sexually and through facultative parthenogenesis …

The diversity of life forms that surround us formed through a variety of processes. Speciation
researchers use a suite of comparative approaches to understand both the generalities and …