A new study published in Science and led by Monash University biologists reveals that the energy cost of reproduction is far greater than previously believed. The research, led by Dr. Samuel C Ginther ...

Animal reproduction encompasses the full sequence from gamete formation through fertilisation, embryonic development and parturition. In farm and companion species alike, natural breeding is ...

Animals are more likely to mate in warmer environments, a study analyzing the impact of climate change on reproductive behavior has found. Looking at the impact of temperature changes on 22 species ...

The energy invested in animal reproduction is as much as 10 times greater than previously estimated when the metabolic load of bearing and caring for offspring is accounted for, according to a new ...

A study has found that the reason why the evolution of the first animals to appear on Earth was delayed for over 10 million years was due to their reproductive methods. Early animals reproduced by ...

Not all species need sperm to fertilize an egg for sexual reproduction. Some species need sperm in order to induce completion of egg nucleus development, but then never use the sperm’s DNA. I describe ...