Intercourse ratios (the fresh proportions of lady) from public teams ranged from 0

We’d 2,544 catches of 340 personal (165 males and you will 175 people) gerbils away from . I seen 164 personal organizations and you will 46 unmarried people through the the a dozen trapping days at the 31 burrow options. Social groups contains 2–18 individuals. I receive 142 communal organizations (68%) and you will 22 men-lady organizations (10%). Unmarried anybody incorporated twenty-seven solitary ladies and you may 19 solitary boys. The new communal groups contained 0-cuatro reproduction boys, 0-step three reproduction female, and 0-11 juveniles and you can, averaged 6.7 anyone each burrow system (SE = 0.3). 00 to at least one.00 and you may averaged 0.sixty (SE = 0.02), and average proportion out of people in public communities is actually 0.70 (SE = 0.03) in entire investigation months.

Sex percentages fluctuated through the years, between 0.52 to help you 0.77 and you may averaging 0.sixty (SE = 0.26; Fig. 1); hence, the newest gerbil society are people-biased. The fresh new proportion off adult people into the reproductive status rejected regarding 0.29 to help you 0.0 of later April so you can later August; meanwhile, the latest ratio out of males that were reproductively productive declined from 0.50 to 0.13 ( Fig. 1). (more…)