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The relative effect...
The relative effects of pace of life-history and habitat characteristics on the evolution of sexual ornaments : A comparative assessment
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- Sowersby, Will (author)
- Stockholms universitet,Zoologiska institutionen,Osaka City University, Japan
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- Eckerström-Liedholm, Simon, 1988- (author)
- Stockholms universitet,Zoologiska institutionen,Wild Animal Initiative, USA
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- Rowiński, Piotr K., 1982- (author)
- Stockholms universitet,Zoologiska institutionen
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- Balogh, Julia (author)
- Stockholms universitet,Zoologiska institutionen
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- Eiler, Stefan (author)
- Stockholms universitet,Zoologiska institutionen
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- Upstone, Joseph D. (author)
- Stockholms universitet,Zoologiska institutionen
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- Gonzalez-Voyer, Alejandro (author)
- Stockholms universitet,Zoologiska institutionen,Universidad Nacional Autónoma de México, Mexico
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- Rogell, Björn, 1979- (author)
- Sveriges lantbruksuniversitet,Stockholms universitet,Zoologiska institutionen,Swedish University of Agricultural Sciences, Sweden,Institutionen för akvatiska resurser,Department of Aquatic Resources,Stockholm University
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(creator_code:org_t)
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- 2021-10-04
- 2022
- English.
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In: Evolution. - : Wiley. - 0014-3820 .- 1558-5646. ; 76:1, s. 114-127
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Abstract
Subject headings
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- Selection may favor greater investment into sexual ornaments when opportunities for future reproduction are limited, for example, under high adult mortality. However, predation, a key driver of mortality, typically selects against elaborate sexual ornaments. Here, we examine the evolution of sexual ornaments in killifishes, which have marked contrasts in life-history strategy among species and inhabit environments that differ in accessibility to aquatic predators. We first assessed if the size of sexual ornaments (unpaired fins) influenced swimming performance. Second, we investigated whether the evolution of larger ornamental fins is driven primarily by the pace of life-history (investment into current vs. future reproduction) or habitat type (a proxy for predation risk). We found that larger fins negatively affected swimming performance. Further, males from species inhabiting ephemeral habitats, with lower predation risk, had larger fins and greater sexual dimorphism in fin size, compared to males from more accessible permanent habitats. We show that enlarged ornamental fins, which impair locomotion, evolve more frequently in environments that are less accessible to predators, without clear associations to life-history strategy. Our results provide a rare link between the evolution of sexual ornaments, effects on locomotion performance, and natural selection on ornament size potentially through habitat differences in predation risk.
Subject headings
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Fisk- och akvakulturforskning (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Fish and Aquacultural Science (hsv//eng)
Keyword
- finfish
- habitat type
- life history
- locomotion
- mortality
- natural selection
- predation risk
- reproduction
- sexual dimorphism
- sexual selection
- swimming
- animal
- ecosystem
- fin (organ)
- genetic selection
- male
- sexual behavior
- sexual characteristics
- Animal Fins
- Animals
- Selection
- Genetic
- Sex Characteristics
- Sexual Behavior
- Animal
Publication and Content Type
- ref (subject category)
- art (subject category)
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