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No pre-existing bias in sailfin molly females, Poecilia latipinna , for a sword in males Klaudia Witte 1) & Karin B. Klink (Lehrstuhl für Verhaltensforschung, Universität Bielefeld) (Accepted: 7 February 2005) Summary The origination of female mate preference is still not well known and may

In: Behaviour

bias hypotheses. This support is independent of the assumptions associated with phylogenetic inference. Unlike the two sexual species, the unisexual hybrid P. formosa had no detectable preference for the novel male traits. Keywords: pre-existing bias, novel ornament, sexual selection, tumor, Poecilia

In: Behaviour

formosa ) is a hybrid of the Atlantic molly ( P. mexicana ) and sailfin molly ( P. latipinna ). Although none of these three species have sword tails, the two parental species differ in preference for swords on conspecifics. We further examined the variation in pre-existing bias within this species

In: Behaviour
Author: Jessica Begon

similarly light on action-guiding principles, focussing on the problems that occur if adaptive preferences are mis diagnosed. Barnes notes that “misapplied, the adaptive preference model can simply entrench pre-existing bias” (p. 137), and considers the epistemic injustice of unwarranted attributions of

In: Journal of Moral Philosophy

selection (Basolo, 1990a; Ryan, 1990; Ryan & Rand, 1993). The role of pre-existing biases on female preference for male traits has been well studied in certain species of live-bearing fishes of the family Poe- ciliidae. For example, male green swordtails, Xiphophorus helleri , possess an elongation of

In: Behaviour

, 1990, 1995a, b; Proctor, 1991, 1992; Ryan & Rand, 1993). Here females have a pre-existing bias for male traits which are not expressed by males of their own species (but see Tobias & Hill, 1998; Wilkinson et al. , 1998). Part of an explanation for the evolution of novel male traits could be sexual

In: Behaviour

, Poecilia mexicana : Evidence for a pre-existing bias in sexual selection. — Ethology 112: 678-690. MacLaren, R.D., Rowland, W.J. & Morgan, N. (2004). Female preferences for sailfin and body size in the sailfin molly, Poecilia latipinna . — Ethology 110: 363-379. O’Brien, W.J., Slade, N.A. & Vinyard, G

In: Behaviour

female mating preference. — Evolution 51, p. 1244-1248. McClintock, W.J. & Uetz, G.W. (1996). Female choice and pre-existing bias: visual cues during courtship in two Schizocosa wolf spiders (Araneae: Lycosidae). — Anim. Behav. 52, p. 167-181. McKinnon, J. (1995). Video mate preferences of female three

In: Behaviour

). Familiarity leads to female mate preference for novel males in the guppy, Poecilia reticulata . — Anim. Behav. 58: 907- 916. McLaren, D.R. & Rowland, W.J. (2006). Female preference for male lateral projection area in the shortfin molly Poecilia mexicana : evidence for a pre-existing bias in sexual selection

In: Behaviour

ornaments: male bluethroats prefer colourful females. — Proc. Roy. Soc. Lond. B Biol. 264: 1579- 1586. Andersson, M. (1994). Sexual selection. — Princeton University Press, Princeton, NJ. Basolo, A. (1995). Phylogenetic evidence for the role of a pre-existing bias in sexual selec- tion. — Proc. Biol. Sci

In: Behaviour