Does Group Size Affect Field Metabolic Rate of Arabian Babbler (Turdoides squamiceps) Nestlings?
نویسندگان
چکیده
منابع مشابه
Seasonal daily, daytime and night-time field metabolic rates in Arabian babblers (Turdoides squamiceps).
Arabian babblers (Turdoides squamiceps; mean adult body mass=72.5 g) inhabit extreme deserts of Israel. Previous studies have shown that their daily field metabolic rates are similar in winter and summer and that there is an increase during the breeding season. We hypothesized that the difference in seasonal daily field metabolic rate would be a consequence of differences in daytime metabolic r...
متن کاملThe sentinel behaviour of Arabian babbler floaters
The sentinel behaviour of 38 Arabian babbler adult floaters, who lived alone within a territory belonging to a foreign group, was studied and compared with their own sentinel behaviour in the past, when they were group members. All floaters acted as sentinels and uttered 'alarm calls'. This suggests that sentinel activity is due at least, in part, to selfish motives. Floaters sentinelled less t...
متن کاملField metabolic rate and body size.
The field metabolic rates (FMRs) of 229 species of terrestrial vertebrates, all measured using the doubly labeled water method in free-living individuals, were evaluated. Daily rates of energy expenditure were as low as 0.23 kJ per day in a small reptile (gecko), to as high as 52 500 kJ per day in a marine mammal (seal). This is a range of nearly six orders of magnitude. More than 70% of the va...
متن کاملHow Does Relative Group Size Affect Civil War Risk?
The literature on social polarization predicts that redistributive conflicts will be most intense in societies with two equally large groups. However, the effect of relative group size on the risk of onset of violent conflict remains unexplored. In this paper we study a game between a rentextracting government and an excluded social group which can explain the determinants of conflict onset and...
متن کاملPhysiology: Why does metabolic rate scale with body size?
used to promote plate tectonics on Mars. The classification of “andesite” rocks at the Mars Pathfinder landing site is tenuous: this name (actually icelandite) was originally assigned on the basis of its major-element chemistry, noting that a sedimentary origin or weathering rind could not be ruled out without textural or mineralogical data. A re-analysis of a-proton X-ray spectrometer chemistr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Auk
سال: 2001
ISSN: 1938-4254,0004-8038
DOI: 10.1093/auk/118.2.525