Digit ratios, secondary sexual characters and condition in barn swallows Hirundo rustica
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Digit ratios, secondary sexual characters and condition in barn swallows Hirundo rustica
Amélie N. Dreiss, Carlos Navarro, Florentino de Lope, and Anders P. Møller Laboratoire Fonctionnement et Evolution des Systèmes Ecologiques, Université Pierre et Marie Curie-Paris 6, Paris, France, Departamento Ecologı́a Funcional y Evolutiva, Consejo Superior de Investigaciones Cientı́ficas, Almerı́a, Spain, Departamento de Biologı́a Animal, Universidad de Extremadura, Badajoz, Spain, and Laborato...
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1. Recent studies in Scotland suggest that the outermost tail feathers of Barn Swallows ( Hirundo rustica Linnaeus) may be around 10–12 mm longer than the aerodynamic optimum, with sexual selection for long tails accounting for this extra length. 2. To test this hypothesis, we shortened the outermost tail feathers in male and female Barn Swallows in southern Spain by cutting 1, 11 or 21 mm from...
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The effects of mutation on phenotypic expression are supposed to be mainly deleterious because mutations disrupt the expression of genes that function relatively well under current environmental conditions. Thus, mutations are assumed to give rise to deviant phenotypes that are generally selected against. Radioactive contamination in the Chernobyl region of Ukraine is associated with a signific...
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JOSÉ J. CUERVO, 1 * ANDERS P. MØLLER 2 & FLORENTINO DE LOPE 3 1 Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, Calle General Segura 1, E-04001 Almería, Spain 2 Laboratoire de Parasitologie Evolutive, CNRS UMR 7103, Université Pierre et Marie Curie, 7 quai St. Bernard, Case 237, F-75252 Paris Cedex 05, France 3 Departamento de Ciencias Morfológicas y Biol...
متن کاملVariation in the Costs, Benefits, and Frequency of Nest Reuse by Barn Swallows (hirundo Rustica)
ABSTP•CT.--The frequency of nest reuse and the costs and benefits of this behavior were investigated in a population of Barn Swallows (Hirundo rustica) at Delta Marsh, Manitoba, during 1984-1986. Slightly less than half the clutches were laid in old nests, and this proportion did not change seasonally except in one late year when old nests were preferred by late-nesting pairs. The delay between...
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ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2007
ISSN: 1465-7279,1045-2249
DOI: 10.1093/beheco/arm095