Lifetime changes in vocal syntactic complexity of rock hyrax males are determined by social class
نویسندگان
چکیده
منابع مشابه
Elevated testosterone levels and social ranks in female rock hyrax.
In mammals, males maintain significantly higher testosterone (T, 'the male hormone') levels than females throughout the year and are typically dominant over females. Our study of the cooperatively breeding rock hyrax (Procavia capensis) demonstrated a distinct exception. In most hyrax social groups that we studied, adult females were at the highest social rank within the group and showed higher...
متن کاملProcavia capensis – Rock Hyrax
Taxonomic notes: While as many as 17 subspecies have been described across its range by Hoeck and Bloomer (2013), only one (P. c. capensis), is recognised from the assessment region (Meester et al. 1986). However, Prinsloo and Robinson (1992) discovered a genetic break between the north-western and south-central populations in South Africa, indicating a possible species complex. Similarly, Viss...
متن کاملSleep in the rock hyrax, Procavia capensis.
We investigated sleep in therock hyrax, Procavia capensis, a social mammal that typically lives in colonies on rocky outcrops throughout most parts of Southern Africa. The sleep of 5 wild-captured, adult rock hyraxes was recorded continuously for 72 h using telemetric relay of signals and allowing unimpeded movement. In addition to waking, slow wave sleep (SWS) and an unambiguous rapid eye move...
متن کاملCyclic changes in the osmolality and electrolyte composition in the gastrointestinal tract of the rock hyrax.
The rock hyrax has been shown to have a very unusual and complex digestive tract. The gastrointestinal tract is comparable to that of the simple and complex stomach of mammals as well as to that of birds. Determinations of osmolality and electrolytes have been made in different sections of the gut of the hyrax. However, with the exception of the elevated potassium levels observed in the cranial...
متن کاملSteroidogenic correlates of pregnancy in the rock hyrax (Procavia capensis).
In pregnant rock hyraxes isolated leucocytes metabolise both [3H]pregnenolone and [3H]progesterone while whole blood, erythrocytes and an erythrocyte/leucocyte mixture only metabolised [3H]progesterone. Plasma displayed no tendency to metabolically convert any one of these two steroids. In whole blood [3H]progesterone appears to be converted to 5alpha-pregnane-3,20-dione and a compound with chr...
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ژورنال
عنوان ژورنال: Animal Behaviour
سال: 2019
ISSN: 0003-3472
DOI: 10.1016/j.anbehav.2019.05.011