SPECIES-UNIVERSAL MICROSTRUCTURE IN THE LEARNED SONG OF THE SWAMP SPARROW (MELOSPIZA-GEORGIANA)
SPECIES-UNIVERSAL MICROSTRUCTURE IN THE LEARNED SONG OF THE SWAMP SPARROW (MELOSPIZA-GEORGIANA)
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DOI:
10.1016/s0003-3472(84)80143-8
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发表时间:
1984-01-01
期刊:
影响因子:
2.5
通讯作者:
PICKERT, R
中科院分区:
文献类型:
--
作者:
MARLER, P;PICKERT, R
A swamp sparrow song is a 2-s string of .apprx. 10 identical syllables, each made up of 2-5 distinct notes. Naturally-occurring syllables are highly polymorphic. The development of syllable patterning is strongly influenced by imitation. Analysis of 452 songs indicates that, whether simple or complex, all syllables were assembled from the same species-universal set of note types, consisting of 6 basic categories. Two populations studied intensively, 1000 km apart, differed in the number of notes per syllable and the ordering of note types within a syllable. It appears that song dialects can be defined in the swamp sparrow by reference to these features. The process of song learning in the swamp sparrow consists of the selection of a particular number, timing and sequence of notes from a limited set of types. While some degree of selection of within-type note variants is possible, the structure of the major categories of swamp sparrow note types is in large degree genetically preordained.