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Effect of separation distance on isolation call structure in squirrel monkeys ( Saimiri sciureus )
Author(s) -
Masataka Nobuo,
Symmes David
Publication year - 1986
Publication title -
american journal of primatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 81
eISSN - 1098-2345
pISSN - 0275-2565
DOI - 10.1002/ajp.1350100307
Subject(s) - saimiri sciureus , squirrel monkey , separation (statistics) , biology , isolation (microbiology) , zoology , anatomy , mathematics , statistics , microbiology and biotechnology
Isolation calls of captive squirrel monkeys were recorded by separating infants from their natal group members and then permitting vocal contact between the “lost” baby and the group at systematically varied distances. Separated infants gave longer calls at greater separation distances from their natal group members, and responding adults and juveniles similarly extended the length of their vocalizations. In the longer variants, a highfrequency element was prolonged, which is considered to be an example of the net advantage of a “frequency window” in the ambient noise of environments.