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Variation and population structure of the tourmaline sunangel, Heliangelus exortis exortis (Aves, Trochilidae). American Museum novitates ; no. 2811

Show simple item record Bleiweiss, Robert. en_US 2005-10-06T18:12:54Z 2005-10-06T18:12:54Z 1985 en_US
dc.description 14 p. : ill., map ; 26 cm. en_US
dc.description Includes bibliographical references (p. 13-14). en_US
dc.description.abstract "The nominate form of the polytypic Andean hummingbird the tourmaline sunangel, Heliangelus exortis exortis, exhibits dramatic variation in a female polychromatism of throat iridescence within and among populations that has not heretofore been appreciated. An analysis of the geographic population structure of samples referable to H. e. exortis was conducted to determine the biological status and historical process of differentiation of polychromatically differentiated samples. Geographic variation in additional color and six mensural characters is discordant within and between the sexes. The polychromatism shows both regular and mosaic patterns of geographic variation. Geographic patterns of variability in the polychromatism do not appear to result from increased variability in putative zones of hybridization between differentiated populations. No character breaks that might indicate noninterbreeding parapatric forms were noted. It is concluded that H. e. exortis comprises a single biological entity and taxon within the polytypic H. exortis complex. The evolutionary origins of the complex pattern of geographic variation in H. e. exortis are discussed. I suggest that biological attributes, in addition to potential geographic barriers, are necessary for a full understanding of the geographic differentiation seen in H. e. exortis"--P. [1]. en_US
dc.format.extent 1928191 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York, N.Y. : American Museum of Natural History en_US
dc.relation.ispartofseries American Museum novitates ; no. 2811 en_US
dc.subject.lcc QL1 .A436 no.2811, 1985 en_US
dc.subject.lcsh Heliangelus exortis exortis. en_US
dc.subject.lcsh Hummingbirds -- Andes Region. en_US
dc.subject.lcsh Hummingbirds -- Colombia. en_US
dc.subject.lcsh Hummingbirds -- Ecuador. en_US
dc.subject.lcsh Birds -- Andes Region. en_US
dc.subject.lcsh Birds -- Colombia. en_US
dc.subject.lcsh Birds -- Ecuador. en_US
dc.title Variation and population structure of the tourmaline sunangel, Heliangelus exortis exortis (Aves, Trochilidae). American Museum novitates ; no. 2811 en_US
dc.type text en_US

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  • American Museum Novitates
    Novitates (Latin for "new acquaintances"), published continuously and numbered consecutively since 1921, are short papers that contain descriptions of new forms and reports in zoology, paleontology, and geology. New numbers are published at irregular intervals.

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