Assembly of the fluorescent acrosomal matrix and its fate in fertilization in the water strider, Aquarius remigis.

The effect of ambient humidity and metabolic rate on the gas-exchange pattern of the semi-aquatic insect Aquarius remigis.

We have examined the effects of temperature on metabolic rate and respiratory pattern in the water strider Aquarius remigis. As temperature was increased from 10 to 30°C, the metabolic rate of the insects increased and the respiratory pattern transitioned from discontinuous, to cyclic, to continuous. The discontinuous gas-exchange cycle (DGC) was observed even in insects standing on water when ...

Modified Microtubules in the Testis of the Water Strider, Gerris Remigis (say)

The role of multilevel selection in the evolution of sexual conflict in the water strider aquarius remigis.

In evolution, exploitative strategies often create a paradox in which the most successful individual strategy "within" the group is also the most detrimental strategy "for" the group, potentially resulting in extinction. With regard to sexual conflict, the overexploitation of females by harmful males can yield similar consequences. Despite these evolutionary implications, little research has ad...

Aquatic and terrestrial organic matter in the diet of stream consumers: implications for mercury bioaccumulation.

The relative contribution of aquatic vs. terrestrial organic matter to the diet of consumers in fluvial environments and its effects on bioaccumulation of contaminants such as mercury (Hg) remain poorly understood. We used stable isotopes of carbon and nitrogen in a gradient approach (consumer isotope ratio vs. periphyton isotope ratio) across temperate streams that range in their pH to assess ...

P-82: Investigation of Relationship between Acrosomal Reaction Rate and Sperm DNA Quality in The Fertilization Rate of IVF Undergoing Men

Background: It is estimated that around 15% of the couple at reproductive age are infertile couples, and approximately the half of infertilities are caused by male factor. Defective spermatogenesis is the result of several different disorders, such as endocrinological disorders, disease, malnutrition, genetic defects and maybe environmental condition. Materials and Methods: In this study 60 IVF...