منابع مشابه
An overview of the barbary macaque, Macaca sylvanus, vocal repertoire.
This study provides an overview of the vocalizations of Barbary macaques, Macaca sylvanus. Spectrographic displays of calls are presented along with photographs of the accompanying facial gestures. We give a general description of the contexts in which the different calls are uttered, with special regard to the age and sex of the caller. The vocal repertoire of Barbary macaques mainly consists ...
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An aged Barbary ape (Macaca sylvanus) at the Toronto Zoo became infected with naturally acquired West Nile virus encephalitis that caused neurologic signs, which, associated with other medical problems, led to euthanasia. The diagnosis was based on immunohistochemical assay of brain lesions, reverse transcriptase-polymerase chain reaction, and virus isolation.
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Cardinal scores of individual competitive ability allow us to quantify the magnitude of the difference between the competitive ability of any two individuals. However, they have rarely been used in animal behaviour because most researchers were mainly interested in ordinal ranking. In this paper, we validated the normalized David's score (David H. A., Biometrika 74, 1987, 432; de Vries H., Stev...
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Terrorism has been considered as a challenge with serious effect in the world as a result of instability, corruption and lack of democracy in most countries. Confronting this phenomenon requires recognizing its roots to find possible solutions. This study aims to examine the effect of some actual factors which causes the terrorism in short and long run. To this end, investigation has been condu...
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ژورنال
عنوان ژورنال: Oryx
سال: 1978
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605300015581