Another Use for Fish Sperm

Pollution is a big problem, particularly from industry which pumps unwanted metals into the soil just about everywhere in the world. Getting rid of this had been an issue looking for a solution for decades. The answer could be at hand from a very weird source.

Fish sperm has a property making it ideal for the purpose. It literally hoovers up the metal particles. The sperm contains high amounts of DNA. This contains phosphate which strongly attracts metals. The metal/phosphate compound can be taken out with neodymium magnets consisting of trivalent iron, dysprosium and neodymium.

In Italy herring sperm was first identified as being useful in cleaning up the environment. With salmon being bred commercially, it is seen as a better source of fish sperm. The substance has been thrown away as waste until now.

✴ Science by Ty Buchanan ✴

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The Poor Health of Men Prevents Conception

Healthy sperm levels in "modern" men are declining. It is increasingly males who are responsible for their partners' failure to conceive. Men today do little exercise, eat too much fat and carbohydrates, and drink too much alcohol. It is no wonder their sperm counts are low.

No longer can women be blamed for being overweight. Being a little overweight does not prevent women from conceiving. Men need to lose their beer guts, pleasantly referred to as love handles.

Tests on male mice showed that obesity decreased the probability of fertilizing female mice. The success of embryo implantation was also decreased, and babies born from these males showed delayed fetal development.

Three quarters of Australian men are overweight. This is way above the world average of 48 per cent. Male mice fed fast food gave disastrous results in producing healthy offspring. Foods that improve sperm count are eggs, sweet potatoes, yogurt, berries, seeds and nuts. Furthermore, consuming more omega-3 was of great benefit.

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Health

Higher Rates of Birth Defects With "Injected" ICSI Babies

For many years we have heard nothing but good things about test tube babies, how they are strong and grow faster, etc. Maybe the "authorities" are telling us what we want to hear, with women choosing to have children later in life.

Older women having babies had their age taken into account when measuring birth defects. If they smoked this was also given a mathematical allowance. This could be distorting the true picture.

There has been a change in the way the "art" of test tube babies is done. Today, an individual sperm is injected into an egg. In the normal fertilization process only the fastest, healthiest sperm is successful.

Evaluation of babies shows that birth defects occur in "injected" babies at a rate of 10 per cent. This compares to 6 per cent for naturally conceived babies. Couples who choose the older form of freezing embryos had normal rates of healthy babies. The attempt to get more embryos by injecting sperm, ICSI, seems to have backfired.

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Health

Eggs of Mussels Attract Compatible Sperm by Releasing Chemicals

Mussel sperm have to find the right egg. This is not as easy as it seems. When the eggs are released they can be scattered through ocean water or river. While mussels are attached to rocks, eggs and sperm are at the mercy of the elements. The eggs have to let sperm know that the eggs are available, so they send out a chemical message to attract suitable sperm.

Many species release chemical signals. The message sent has to be differentiated to prevent fertilization by siblings. A test was done forcing sperm to fertilize chosen eggs. Only compatible matches gave healthy offspring. In a later test mussel sperm were observed to choose compatible eggs to produce health young.

This is the first time chemical attraction has been observed in mussels. It shows how important compatibility is in many species. This brings into question the theory of gene pools where there is deemed to be no barrier to gene pairing. The idea that any male and female can have offspring no longer stands. Even human eggs send out chemical signals to attract compatible sperm. Some human couples cannot have children even when tests show they are perfectly healthy. Fertilization can occur with a different partner.

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Science