Sexual reproduction delays aging in a mammalian species
Past research on aging and the life histories of diverse species has shown that sexual reproduction is biologically costly for individuals and tends to decrease lifespan rather than increase it.

Smoking decreases men's chances of fatherhood by IVF and ICSI
Men who smoke reduce their chances of successfully fathering a child by either standard IVF techniques or by ICSI, according to research carried out in Germany.

Fish evolve a longer lifespan by evolving a longer reproductive period, researchers find
Fish have menopause, study determines; menopausal period not affected by evolution

Getting an evolutionary handle on life after reproduction
Since many animals live beyond their fertile years, biologists have searched for evolutionary clues to this extended lifespan.

Better together: Bacterial endosymbionts are essential for the reproduction of a fungus
Endosymbiotic relationships—in which one organism lives within another—are striking examples of mutualism, and can often significantly shape the biology of the participant species.

Why cloning could wipe out species
Cloning on a grand scale could spell the end of species as they become progressively nastier, warn researchers at the University of Sussex.

Understanding Infertility - The Role of Genes in the Control of Reproduction
The problem of infertility is not confined to humans alone.

Italy now faces worldwide storm of protest over fertility proposals
Italian legislators now face worldwide condemnation by fertility experts for IVF proposals that could encourage multiple pregnancies and put babies at risk.

Reproduction of fungus depends on
A research team of the Department of Applied Chemistry of the University of the Basque Country has been studying the reproduction of funguses.

Link between assisted reproduction techniques and genetic disruption
Evidence that assisted reproduction techniques may carry a risk of genetic 'imprinting disorders' in the resulting babies

Common Pesticide May Reduce Fertility In Women
Methoxychlor (MXC), a common insect pesticide used on food crops, may interfere with proper development and function of the reproductive tract, leading to reduced fertility in women...

Calcium Signals for Egg Activation in Mammals
A review of the advances in the research on Ca2+ signals at fertilization with special attention to mammals.

New Clues To How Sex Evolves
Researchers have found clues to one part of this complex question in ongoing studies of the nematode Caenorhabditis elegans.

No sex please, we're lizards
A Komodo dragon (Varanus komodoensis) has astonished the scientific world by producing a clutch of eight viable eggs without any assistance from a male.

Underweight Women At Greater Risk Of Miscarriage
Women who have a low body mass index before they become pregnant are 72% more likely to suffer a miscarriage in the first three months of pregnancy, but can reduce their risk significantly by taking supplements and eating fresh fruit and vegetables

Women Infected With Toxoplasmosis Are More Likely To Have Boys Than Girls
Women infected with dormant toxoplasmosis are more likely to give birth to boys than women who are Toxoplasma negative, according to research

Which women stop smoking during pregnancy and the effect on breastfeeding duration
This study investigates the socio-demographic characteristics of pregnant women who stop smoking during pregnancy and the association between stopping smoking and breastfeeding duration.

Sperm-egg fusion: events at the plasma membrane
The authors discussed the basic strategies for uniting the membranes and cytoplasms of two cells and focus on sperm-egg fusion in mammals as a representative example.

The mechanism of sperm–oocyte fusion in mammals
In this review we highlight the candidate molecules involved in the sperm–oocyte interaction suggested from the recent progress in this research field.

Smoking Increases Likelihood Of Impotency
Men who smoke are more likely to suffer from erectile dysfunction than nonsmokers, reports an international group of impotency experts...