For instance, in sticklebacks (Gasterosteus aculeatus) males take care of the eggs, and hence male traits may signal the quality of paternal care (Künzler & Bakker, 2000), whereas female traits may signal fecundity (Kraak & Bakker, 1998). This example emphasizes the possibility that females and males may signal different qualities with different phenotypic traits.
Published in: Journal of Evolutionary Biology · 2001Authors: Alexandre Roulin · Cor Dijkstra · Christian Riols · A L DucrestAffiliation: University of Bern · Cancer Research InstituteAbout: Ecology · Reproductive success · Genetic correlation · Barn-owl · Sexual selection
barn owl; female ornamentation; genetic correlation; good genes; sexual selection. Abstract Most bird studies of female signalling have been conﬁned to species in which females display a male-ornament in a vestigial form. However, a great deal of beneﬁt may be gained from considering phenotypic traits that are speciﬁc to females.
Most bird studies of female signalling have been confined to species in which females display a male-ornament in a vestigial form. However, a great deal of benefit may be gained from considering
You have free access to this content Female- and male-specific signals of quality in the barn owl
This possibility is plausible because male J. EVOL. BIOL. 14 (2001) 255±266 ã 2001 BLACKWELL SCIENCE LTD Female- and male-speci®c signals of quality 265 barn owls invest more energy in the feeding of the de Bruijn, O. 1994.
Female‐and male‐specific signals of quality in the barn owl. 12 Pages. Female‐and male‐specific signals of quality in the barn owl. Authors. A or download with email. Female‐and male‐specific signals of quality in the barn owl. Download. Female‐and male‐specific signals of quality in the barn owl. Authors. A. Ducrest + 2. A
Most bird studies of female signalling have been confined to species in which females display a male-ornament in a vestigial form. However, a great deal of benefit may be gained from considering phenotypic traits that are specific to females.
Whereas in birds female mate choice for male indicator traits is common (Andersson 1994), in lizards there is remarkably little evidence for female mate choice or for the presence of male signals that could be used by females to assess male phenotypic quality (Olsson and Madsen 1995; Tokarz 1995; but see Cooper and Vitt 1993).
Ornamentation in birds is generally considered a male’s way to communicate their quality to females. A more ornamented, vibrant, decorated, etc. male is generally considered higher quality, thus driving selection for particular traits (Peacock is an easy example, but …
[Show full abstract] barn owl, Tyto alba, in which females exhibit on average more and larger black spots on the plumage than males, and in which males were suggested to choose a mate with respect
Sep 22, 2005 · Although the presence of feathers in the nest is widespread among birds, it has not been previously suggested that feathers can be used as sexual signals. Females of the spotless starling (Sturnus unicolor) regularly carry feathers to their nest, mostly during laying and incubation. We show that the arrangement of these feathers was non-random with respect to the side (obverse or reverse) …
Apr 23, 2010 · The fitness consequences of female ornamentation remain little studied and the results are often contradictory. Female ornamentation may be an artefact of a genetic correlation with male ornamentation, but this possibility can be disregarded if the ornament only occurs in females.
A female melanin ornament signals offspring fluctuating asymmetry in the barn owl Alexandre Roulin1*, Anne-Lyse Ducrest2,Franc¸oisBalloux3, Cor Dijkstra4 and Christian Riols5 1Department of Zoology, University Cambridge, Downing Street, Cambridge CB2 3EJ, UK
With 0% cover, G. allenbyi suffered higher predation rates than G. pyramidum, but with 10% cover, rates of owl predation did not differ between gerbil species. Rates of owl predation on the two species corresponded to their natural patterns of macro— and microhabitat partitioning; relative to G. allenbyi, G. pyramidum predominates on open sand dunes and biases its behavior toward the open microhabitat.