Researchers tag great white sharks off Cape Cod (Update)
New study reveals responses of genes in females to sex
Sex can trigger remarkable female responses including altered fertility, immunity, libido, eating and sleep patterns—by the activation of diverse sets of genes, according to research from the University ...
Bright bills in mallards helps duck semen fight bacteria
(PhysOrg.com) -- The male Mallard duck (Anas platyrhynchos) is known for its colorful neck and a bill that ranges in color from dull green to bright yellow, depending on the amount of carotenoid pigment it con ...
New model reveals pesticide-free method that takes a bite out of mosquito-borne disease
Scientists have modeled a system that may be used to control mosquitoes and the diseases they transmit, without the use of pesticides. In the proposed system, mosquitoes are engineered to carry two genes. The first gene causes ...
New research confirms semen allergy in some men
Some poor men are apparently allergic to their own semen, developing a mysterious flulike illness after they have an ejaculation, Dutch researchers reported Monday.
Preliminary study suggests frequent cycling could affect male fertility
(PhysOrg.com) -- A study of men attending fertility clinics has found bicycling for five or more hours a week was associated with low sperm count and poor sperm motility.
Exposure to BPA associated with reduced semen quality
Increasing urine BPA (Bisphenol-A) level was significantly associated with decreased sperm concentration, decreased total sperm count, decreased sperm vitality and decreased sperm motility, according to a Kaiser Permanente ...
UCLA lens-free telemedicine microscope adds male fertility testing to its bag of tricks
Using holographic imaging system, the microscope can produce phase and amplitude images of semen samples in the field and identify which are moving and which are immotile.
Drinking alcohol during pregnancy may damage semen quality in sons
Mothers who drink alcohol while they are pregnant may be damaging the fertility of their future sons, according to new research to be presented at the 26th annual meeting of the European Society of Human Reproduction and ...
The mating game is far more complicated than X and Y
(PhysOrg.com) -- University of Adelaide research reveals that a man's sperm does far more than fertilise an egg in the womb.
96 percent of vasectomy patients cleared without need for multiple semen samples
Having to provide repeated semen samples following a vasectomy could soon be a thing of the past, after 96 per cent of men were given the all-clear based on a single test three months after surgery.
Sperm may play leading role in spreading HIV
Sperm, and not just the fluid it bathes in, can transmit HIV to macrophages, T cells, and dendritic cells (DCs), report a team led by Ana Ceballos at the University of Buenos Aires in Argentina. By infecting ...
Research Yields Sheep Breeding Improvements
Environmental chemicals found in breast milk and high incidence of testicular cancer
A comparison of breast milk samples from Denmark and Finland revealed a significant difference in environmental chemicals which have previously been implicated in testicular cancer or in adversely affecting development of ...