Fecundity

Balzan Foundation announced 2008 prize winners

...inal philosophical perspective, that is focused on the essential tension between an objective and subjective point of view and for the originality and fecundity of his philosophical approach to some of the most important questions in contemporary life". Werner Stauffacher (Professor Emeritus of Internal Med...

Sub-Saharan Africa: the population emergency

... that the use of contraception is progressing very slowly contributes to the strong population growth. Yet the control by women and couples over their fecundity remains the essential lever by which Sub-Saharan Africa might achieve its demographic transition. However, campaigns promoting the balanced family suc...

Fecundity in Biological News

Male seahorses like big mates

...peting for their attention. However, clutch, egg and offspring size all increase with female body size in seahorses, suggesting that males may obtain fecundity benefits by mating with large-bodied females. Mattle and Wilson investigated the mating behavior of the pot-bellied seahorse (Hippocampus abdominal...

Chromosomal problems affect nearly all human embryos

...han 50% of spontaneous abortions carry chromosomal aberrations. The high rate of chromosomal abnormalities is almost certainly responsible for the low fecundity of humans compared with other mammals," she added. The scientists say that their work has important implications for preimplantation genetic screen...

Biologists solve mystery of black wolves

... may be responsible for the specific trait. Our hope is that we will find the genetic basis for traits having to do with behavior, speed, longevity or fecundity all these traits that we measure in wild populations, but we do not yet understand their genetic basis." Yellowstone is home to the wolf popula...

Giant panda genome to be sequenced

...o Tong University and Fudan University, noted that the panda sequence obtained from this project will greatly benefit our understanding of the reduced fecundity in pandas when living under certain environmental conditions. This is a major issue for breeding programs that are carried out to strengthen the panda...

Whiteflies and plant viruses can help each other to speed up biological invasion

... The research compared development, survival, fecundity and population increase of the invasive B whitefly...healthy plants, the invasive B whitefly had higher fecundity and longevity by 12 and 6 fold when feeding on pla...ies per se has limited effects on the survival and fecundity of the vectors, and the B whitefly acquires the be...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...productive success. The monitoring protocol of saiga antelopes is currently being improved to include non-invasive methods for monitoring to determine fecundity rates (from faeces analysis). ...

Wasps queue for top job

...g harder, they help the group as a whole and as a result indirectly benefit themselves, but they simultaneously decrease their own future survival and fecundity because helping is costly. It involves energy-expensive flight to forage for food, and leaving the nest is dangerous. We have found that the brighter ...

Sexual cooperation: Mating increases longevity in ant queens

...of the fruitfly Drosophila). These manipulations are beneficial to males because, for example, they reduce female re-mating probability or boost their fecundity directly after mating, but they can be very harmful to females, whose lifespan and future reproductive output can be drastically reduced. New findings...

Fecundity in Biological Definition

Parthenogenesis

...els of estrogen are low, and others to take the role of female when estrogen levels are high. Lizards that act out the courtship ritual have greater fecundity than those kept in isolation due to the increase in hormones that accompanies the fake sex. So, even though asexual whiptail lizards populations lac...

Fecundity in Biological Dictionary

Fecundity

Fecundity , derived from the word fecund, generally refers to the ability to reproduce. In biology and demography, fecundity is the potential reproductive capacity of an organism or population, measured by the number of gametes (eggs), seed set or asexual propagules. Fecundity is under...