Editor’s note: This is part one of a two-part series. Some months ago I was captivated by a grunt sculpin at the NOAA lab, and I learned that males of this species commonly guard their mate’s eggs.

A rare glimpse of the intimate lives of Bombay night frogs reveals unexpected biology, including a new style of mating embrace. More typically, male frogs, which don’t deliver sperm into a female ...

This is a preview. Log in through your library . Abstract I assessed the effects of female-biased operational sex ratios (OSR) on timing of oviposition, fertilization duration, and any other ...

In species with internal fertilization, females can favour certain males over others, not only before mating but also within the female’s reproductive tract after mating. Here, we ask whether such ...