کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4931096 1432746 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hormonal correlates of natal dispersal and rank attainment in wild male baboons
ترجمه فارسی عنوان
همبستگی های هورمونی از پراکندگی های زناشویی و رتبه بندی در پاپایان های وحشی
کلمات کلیدی
بابون پراکندگی، دستاوردهای رتبه، گلوکوکورتیکوئیدها، تستوسترون،
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی علوم غدد
چکیده انگلیسی


- We assessed the link between dispersal, rank attainment and hormones in male baboons.
- Attaining adult dominance rank is linked to increased fecal glucocorticoids levels.
- Natal dispersal is not associated with variation in hormone levels in this study.

In many mammals, maturational milestones such as dispersal and the attainment of adult dominance rank mark stages in the onset of reproductive activity and depend on a coordinated set of hormonal and socio-behavioral changes. Studies that focus on the link between hormones and maturational milestones are uncommon in wild mammals because of the challenges of obtaining adequate sample sizes of maturing animals and of tracking the movements of dispersing animals. We examined two maturational milestones in wild male baboons-adult dominance rank attainment and natal dispersal-and measured their association with variation in glucocorticoids (fGC) and fecal testosterone (fT). We found that rank attainment is associated with an increase in fGC levels but not fT levels: males that have achieved any adult rank have higher fGC than males that have not yet attained an adult rank. This indicates that once males have attained an adult rank they experience greater energetic and/or psychosocial demands than they did prior to attaining this milestone, most likely because of the resulting participation in both agonistic and sexual behaviors that accompany rank attainment. In contrast, natal dispersal does not produce sustained increases in either fGC or fT levels, suggesting that individuals are either well adapted to face the challenges associated with dispersal or that the effects of dispersal on hormone levels are ephemeral for male baboons.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hormones and Behavior - Volume 94, August 2017, Pages 153-161
نویسندگان
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