The relationship, where one breeding female and one breeding male are closely associated with each other over several breeding seasons, appears to have evolved as a mating strategy.
One breeding farm, Berkshire Stud, produced Private Emblem, the winner of last year's Arkansas Derby and an early favorite in the 2002 Kentucky Derby.
The former Soviet states, among the world's most inhospitable to free expression, are one breeding ground for libel tourists (Ten of 12 former Soviet republics are rated "Not Free" in Freedom House's annual global survey of media independence).
Ships are one of the two leading causes of unnatural death among right whales, and scientists have warned that the unnatural death of even one breeding female has the potential to tip the species toward extinction.
However, the demographic model performed consistently better at predicting the presence of at least one breeding pair in local landscapes.
The performances of the proposed design are evaluated by means of new FE models of one breeding unit and the corresponding box structure.
A review of the nest platforms during the summer of 2003 indicated that at least one breeding pair that produced fledgling young occupied one nest.
Dimorphism in these traits is, in turn, correlated with social behavior insofar as highly dimorphic primates tend to be polygynous such that social groups are centered around several breeding females, one breeding male, and their offspring.
We ultimately received approval to film four mice: one breeding pair genetically engineered with two zonulin genes and one wild-type or "normal" breeding pair, which had no zonulin genes.
Therefore, we simulated only one breeding season, consisting of 10 discrete generations.
The value of one breeding chicken is considerably less than that of one bull or even one cow.
