sex ratio

(redirected from Unbalanced sex ratio)
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sex ratio

[′seks ‚rā·shō]
(biology)
The relative proportion of males and females in a population.
References in periodicals archive ?
The characteristics of the Baillif cemetery (high number of graves, unbalanced sex ratio, absence of sub-adults, early death possibly linked to endemic diseases, and absence of grave goods) are similar to those recorded for the Hopital de la Charite graveyard.
These latter 2 possibilities can be excluded because the number of calves with cows in winter is comparable in hunting zones with unbalanced sex ratios (Courtois and Lamontagne 1999) and it has been shown that summer growth rates of calves originating from the first and second estrus does not differ (Schwartz et al.
The authors recommend that future research examine women's, sexual behavior--which may counterbalance men's behavior--and explore "the consequences of unbalanced sex ratios for men sand women's sexual health behavior in .
Unbalanced sex ratios, long hours of deskilled labor, and leisure institutions that encouraged drinking and gambling all promoted values where men could best achieve status in the eyes of their peers by behaving violently.
Throughout all three parts of the book, Berlin traces the balance between "Atlantic creoles," people who were born in the New World or belonged to its trans-Atlantic economy, and transported Africans, whose disorientation, unbalanced sex ratios, high mortality, and low fertility signaled misfortune in American settings.
In many parts of the country deer herds have lopsided age structures and unbalanced sex ratios.