Stability of reindeer harems according to male age and social rank
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چکیده
منابع مشابه
One-male harems and female social dynamics in Guinea baboons.
Little is known about the mating system and social organization of Guinea baboons. This study investigated whether Guinea baboons have a harem-based mating system similar to that of hamadryas and gelada baboons and whether one-male mating units also correspond to social units. Ten adult females in a captive multi-male multi-female group of Guinea baboons were focally observed 2 h per week for 1...
متن کاملstability and attraction domains of traffic equilibria in day-to-day dynamical system formulation
در این پژوهش مسئله واگذاری ترافیک را از دید سیستم های دینامیکی فرمول بندی می کنیم.فرض کرده ایم که همه فاکتورهای وابسته در طول زمان ثابت باشند و تعادل کاربر را از طریق فرایند منظم روزبه روز پیگیری کنیم.دینامیک ترافیک توسط یک نگاشت بازگشتی نشان داده می شود که تکامل سیستم در طول زمان را نشان می دهد.پایداری تعادل و دامنه جذب را توسط مطالعه ویژگی های توپولوژیکی تکامل سیستم تجزیه و تحلیل می کنیم.پاید...
Mating Tactics and Mate Choice in Relation to Age and Social Rank in Male Mountain Goats
In polygynous mammals, mating success of males often depends on intense male–male competition and the use of alternative mating tactics. Because reproduction incurs substantial energetic costs and risks of fight injuries, mate selection by males should be expected, particularly when females vary in their ability to produce offspring but can only be defended 1 at a time. Here, we investigated du...
متن کاملPredictions of post-traumatic growth according to spirituality, social support and positive affection in deferent age groups with breast cancer
Cancer causes a great suffering situation which leads the psychosocial outcomes and quality of life such as anxiety and depression. The purpose of this research is prediction of PTG by spirituality, social support and positive affection in women with breast cancer. The results were presented according to different ages. Participants were 106 females with breast cancer who were hospitalized at 3...
متن کاملPrediction of Gestational Age According to Fetal Femur Length
SUMMARY Determination of gestational age have several usages in obstetrics and gynecology. The relation between fetal femur length and gestational age has determined in this research using real time sonography. 1000 iranian pregnant women between 12-40 weeks of gestation with accuratic last menstrual period and with out the history of diabetes lllellitus, hypertension, renal disease and fetal ...
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ژورنال
عنوان ژورنال: Rangifer
سال: 2011
ISSN: 1890-6729
DOI: 10.7557/2.31.2.2007