Conversely, in another recent study, Hoberman et al. (2008) found no association between MP or BP and reproductive markers in rats.
In the present study we assessed relationships between urinary concentrations of several parabens and a range of male reproductive health markers in an ongoing study of environmental determinants of reproductive health.
The cross-sectional design of the present analysis also restricts our ability to make conclusions regarding causal relationships, and the relatively small sample size provided low statistical power, which limited our ability to detect subtle relationships between urinary parabens and male reproductive health markers.
These results implicate the prospective use of leptin gene polymorphisms for association studies with different productive and reproductive performances and marker assisted selection (MAS).
Proposed mechanisms for the recognition of worker-laid eggs or active reproductive workers include marker hydrocarbons on the surface of queen-laid eggs, cuticle hydrocarbons on reproductive workers, and recognition of nest-mates.
The expression levels of OsMADS14 and OsMADS18, which are two well-known reproductive phase transition markers, were also increased at early developmental stages and are believed to be the major regulators responsible for early flowering in OsMADS45-overexpressing transgenic rice.
Apart from the observed differentiation between reproductive modes, nuclear markers also indicated limitations to gene flow between parasitoids collected from different aphids, i.e., host-associated differentiation (HAD).
When the researchers compared concentrations of reproductive hormones and markers of semen quality between the two groups of men, they found no significant differences.
The high levels of PCBs found in the females indicates they are not reproducing, he said: "It is a chemical marker of reproductive failure".
To evaluate anti-Müllerian hormone (AMH) as a marker of reproductive outcome after IVF/intracytoplasmic sperm injection (ICSI).
