Gamete Biology
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Morphological and morphometrical assessment of spermathecae of Aedes aegypti females
The vectorial capacity of Aedes aegypti is directly influenced by its high reproductive output. Nevertheless, females are restricted to a single mating event, sufficient to acquire enough sperm to fertilize a lifetime supply of eggs. How Ae. aegypti is able to maintain viable spermatozoa remains a mystery. Male spermatozoa are stored within either of two spe
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-09
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2. Pronounced segregation of donor mitochondria introduced by bovine Ooplasmic tranfer to the female germ-line.
Ooplasmic transfer (01) has been used in basic mouse research for studying lhe segregation of mtDNA, as well as in human assisted reproduction for improving embryo development in cases of persistent developmental failure. Using cattle as a large-animal model, we demonstrate that lhe moderate amount of mitochondria introduced by OT is transmitted to lhe offsp
Biology of Reproduction. Publicado em: 2011
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3. Positive selection in the egg receptor for abalone sperm lysin
The mechanism of speciation is a central problem in evolutionary biology. In free-spawning animals with no complex mating behavior, prezygotic reproductive isolation (speciation) could result from the rapid divergence of genes coding for sperm and egg proteins that bind each other during fertilization. In abalone, sperm lysin evolves rapidly by positive Darw
The National Academy of Sciences.