The still apt definition of a placenta is that coined by Mossman, namely apposition or fusion
of the fetal membranes to the uterine mucosa for physiological exchange. As such it is a …

Matrotrophy, the continuous extra‐vitelline supply of nutrients from the parent to the progeny
during gestation, is one of the masterpieces of nature, contributing to offspring fitness and …

Background Fish classifications, as those of most other taxonomic groups, are being
transformed drastically as new molecular phylogenies provide support for natural groups …

The book aims to integrate our understanding of mammalian societies into a novel synthesis
that is relevant to behavioural ecologists, ecologists, and anthropologists. It adopts a …

Sex chromosomes evolve once recombination is halted between a homologous pair of
chromosomes. The dominant model of sex chromosome evolution posits that recombination …

Ornaments used in courtship often vary wildly among species, reflecting the evolutionary
interplay between mate preference functions and the constraints imposed by natural …

Papers on sexual selection often highlight the incredible diversity of sexually selected traits
across animals. Yet, few studies have tried to explain why this diversity evolved. Animals use …

Species richness is distributed unevenly across the tree of life and this may be influenced by
the evolution of novel phenotypes that promote diversification. Viviparity has originated∼ …

All organisms live in temporally fluctuating environments. Theory predicts that the evolution
of deterministic maternal effects (ie, anticipatory maternal effects or transgenerational …

The fish subfamily Poeciliinae (sensu Parenti, 1981) is widely distributed across the Western
Hemisphere and a dominant component of the fish communities of Central America …