The X-ray examination of the fossil ostracods revealed direct parallels with the complex reproductive apparatus of modern relatives of these Cretaceous fossils. The team also came across something of a surprise: two of the female specimens had voids in in modern ostracods that have recently mated, ie, fossil evidence of fertilization was discovered.
It seems to be an evolutionarily successful reproduction strategy ‘ high price for both sexes is the amount of energy in the production and implementation of such an enormous sperm invested. ‘.. Size Does Matter – oldest evidence for reproduction with giant sperm at the European Synchrotron Radiation Facility Uncoveredhas the mystery of the giant sperm in some living animal groups a new dimension a new dimension. In a group of small crustaceans new evidence shows the feature is at least 100 million years old.In total the researchers’ findings highlight of variation of influenza pandemic frequency and severity of under age groups, and indicate how significant the school cycles on the transmission lines dynamics of of this disease. The importance of school children for pandemic influenza transfer is based on the knowledge that closing schools efficient reduce influenza transmission of in early 2009 Mexico, with a large increase in influenza cases among school children the same time as schools reopening of is based.
Of Gerardo by Gerardo Chowell a Fogarty Accountant and member the Department at Arizona State University, Tempe. His team is provides the first comprehensive epidemiology description age, geographical and seriousness model of the 2009 pandemic Mexico.