Female tawny-bellied seedeaters do not prefer more colorful males in choice experiments

Abstract

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Song‐based species discrimination in a rapid Neotropical radiation of grassland seedeaters

“…Future laboratory controlled experiments on female choice are needed to provide a better understanding of the role of song in species discrimination and its possible function as a premating isolation barrier in the southern capuchinos. A female choice experiment has been conducted using S. hypoxantha females and conspecific males (Facchinetti and Reboreda ), however the relative preference of females for homospecific over heterospecific males remains to be tested.…”

“…Finally, we did not fi nd statistically signifi cant diff erences in the response to S. palustris song, during the PB stage, between populations of S. hypoxantha from CCP and EB for any of the response variables (two tailed t-test t 11 , p Ͼ 0.2). S. hypoxantha females and conspecifi c males (Facchinetti and Reboreda 2013), however the relative preference of females for homospecifi c over heterospecifi c males remains to be tested.…”

Variation in multicomponent recognition cues alters egg rejection decisions: a test of the optimal acceptance threshold hypothesis

“…The spectral reflectance of each egg was measured six times, prior to the addition of any spots, and we used the average reflectance spectrum to represent the colour of each egg. We also measured abandoned natural eggs of hosts (n ¼ 51) and their parasites (n ¼ 60) using an Ocean Optics 2000 reflectance spectrometer with a PX-2 pulsed xenon light source (Ocean Optics, Dunedin, Florida, USA), relative to a barium sulfate white standard, following [42,43]. The probe was consistently held 5 mm from the eggshell surface, at a 908 coincident normal measurement angle, for all measurements.…”