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| Winkler,David W.. |
| Swallows of the north temperate zone display a wide variety of territorial behaviour during the breeding season, but as soon as breeding is over, they all appear to adopt a pattern of independent diurnal foraging interleaved with aggregation every night in dense roosts. Swallows generally migrate during the day, feeding on the wing. On many stretches of their annual journeys, their migrations can thus be seen as the simple spatial translation of nocturnal roost sites with foraging routes straightening out to connect them. However, swallows that must make long journeys over ecological barriers clearly fly at night as well as in the day, and many suggestions indicate that there is considerable complexity in the altitude and bearing of flights even during the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diurnal; Hirundinidae; Martins; Migration; Nocturnal; Roost; Swallows. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072006000200004 |
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| Barcellos,Suziane Alves; Kretschmer,Rafael; Souza,Marcelo Santos de; Costa,Alice Lemos; Degrandi,Tiago Marafiga; Lopes,Cassiane Furlan; Ferguson-Smith,Malcolm A.; Pereira,Jorge; Oliveira,Edivaldo Herculano Correa de; Gunski,Ricardo José; Garnero,Analía del Valle. |
| Abstract Despite the richness of species in the Hirudinidae family, little is known about the genome organization of swallows. The Progne tapera species presents genetic and morphological difference when compared to other members of the same genus. Hence, the aims of this study were to analyze the chromosomal evolution of three species Progne tapera, Progne chalybea and Pygochelidon cyanoleuca - by comparative chromosome painting using two sets of probes, Gallus gallus and Zenaida auriculata, in order to determine chromosome homologies and the relationship between these species. All karyotypes exhibited 76 chromosomes with similar morphology, except for the 5th, 6th and 7th chromosome pairs in P. cyanoleuca. Additionally, comparative chromosome painting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Homology; Molecular cytogenetics; Fluorescent in situ hybridization; Hirundinidae. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100201 |
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