In many animals, males pursue alternative tactics when competing for the fertilization of eggs. Some cichlid fishes from Lake Tanganyika breed in empty snail shells, which may select for extremely divergent mating tactics. A recent study at the Institute of Ecology and Evolution of the University of Bern shows that different male types within a species produce divergent sperm, specializing either in speed or longevity. In the context of reproductive competition, males find different ways to enhance their odds. This may include flamboyant colours, gorgeous feathers, impressive antlers or conspicuous courtship displays.
9 Surprising Things Every Woman Needs to Know About Semen
8 Surprising Things Every Woman Needs To Know About Semen | iberos.info
Fish oil is a dietary source of omega-3 fatty acids. Your body needs omega-3 fatty acids for many functions, from muscle activity to cell growth. Omega-3 fatty acids are derived from food. They can't be manufactured in the body. Dietary sources of DHA and EPA are fatty fish, such as salmon, mackerel and trout, and shellfish, such as mussels, oysters and crabs. Some nuts, seeds and vegetable oils contain another omega-3 called alpha-linolenic acid ALA. Omega-3 fatty acids are essential for good health.
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Female ejaculation comes in two forms, scientists find
Fish reproductive organs include testes and ovaries. In most species, gonads are paired organs of similar size, which can be partially or totally fused. The genital papilla is a small, fleshy tube behind the anus in some fishes, from which the sperm or eggs are released; the sex of a fish often can be determined by the shape of its papilla. Most male fish have two testes of similar size.
Semen analysis is an important fertility test for infertile couples, and the test should be done before any treatments even "just Clomid " are prescribed. Also referred to as sperm count testing, semen analysis includes more than just a sperm count. While one-third of infertility cases involve the female partner, one-third of infertility cases are related to the male partner. Every infertile couple must make sure the male partner is tested.