Long call vocalizations were recorded in the field from four adjacent subspecies of the saddle‐back tamarin, Saguinus fusckollis ssp. Quantitative measurements of several call parameters were analyzed and four variables were found to be significantly different across subspecies. Each of the four subspecies had a distinctive set of long call parameters. One animal's call was a mosaic of its own subspecies call and that of the subspecies found directly across the river. Recordings of captive hybrids of the same two subspecies showed components of only one of the parental calls, and of calls of another subspecies with which they were housed. Long call structures of subspecies of Saguinus fusckollis are useful for studies of vocal ontogeny and identification of subspecies.
Zusammenfassung
Aus 4 einander benachbarten Unterarten des Krallenaffen Saguinus fuscicollis wurden „Lang‐Rufe” aufgenommen und quantitativ analysiert. In 4 Ruf‐Parametern unterscheiden sich alle Unterarten voneinander.
Ein Tier äußerte eine Mischform des Rufes zwischen seiner eigenen und einer anderen, in Hörweite lebenden Unterart. Gefangenschafts‐Hybriden zwischen diesen beiden Unterarten zeigten diese Mischform nicht; sie besaßen einige Rufkomponenten einer weiteren Unterart, mit der sie zusammen wohnten.
S. fuscicollis eignet sich gut zur Untersuchung der Ruf‐Ontogenese bei Affen. Die Unterschiede zwischen Unterarten eignen sich als taxonomisches Merkmal und lassen den Grad der Aufsplitterung erkennen.
Recently captured moustached tamarins (Suguinus mystax) were briefly separated from other members of their troop. Most separated animals emitted long calls that were, in general, similar in acoustic structure to those of sympatric tamarin species while retaining species distinctiveness. Individual differences also appeared in call structure. The long calls of a separated animal were responded to almost entirely by members of the animal's own troop rather than by other troops, and reciprocal calling occurred among troop members significantly more often than expected by chance. Although there was no evidence of troop-specific call structure or dialect, there were troop-specific responses to the calls of separated tamarins. This response implies the existence of a stable and integrated troop structure that allows troop members to learn and to respond to the individual specific features of each troop member's calls.
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