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Life history traits...
Life history traits, but not body size, vary systematically along latitudinal gradients on three continents in the widespread yellow dung fly
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- Blanckenhorn, Wolf U. (author)
- Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
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- Bauerfeind, Stephanie S. (author)
- Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
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- Berger, David (author)
- Uppsala universitet,Zooekologi,Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
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- Davidowitz, Goggy (author)
- Univ Arizona, Dept Entomol, Tucson, AZ USA
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- Fox, Charles W. (author)
- Univ Kentucky, Dept Entomol, Lexington, KY USA
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- Guillaume, Frederic (author)
- Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
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- Nakamura, Satoshi (author)
- JIRCAS, Tsukuba, Ibaraki, Japan
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- Nishimura, Kinya (author)
- Hokkaido Univ, Fis Sci, Hakodate, Hokkaido, Japan
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- Sasaki, Hitoshi (author)
- Rakuno Gakuen Univ, Entomol Lab, Ebetsu, Hokkaido, Japan
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- Stillwell, R. Craig (author)
- Univ Arizona, Dept Entomol, Tucson, AZ USA;Univ Kentucky, Dept Entomol, Lexington, KY USA;Univ Lausanne, Dept Ecol & Evolut, Lausanne, Switzerland
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- Tachi, Takuji (author)
- Kyushu Univ, Biosystemat Lab, Fukuoka, Fukuoka, Japan
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- Schaefer, Martin A. (author)
- Univ Zurich, Dept Evolutionary Biol & Environm Studies, Zurich, Switzerland
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(creator_code:org_t)
- 2018-06-14
- 2018
- English.
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In: Ecography. - : Wiley. - 0906-7590 .- 1600-0587. ; 41:12, s. 2080-2091
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Abstract
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- Large-scale clinal variation in body size and other life-history traits is common enough to have stimulated the postulation of several eco-geographical rules. Whereas some clinal patterns are clearly adaptive, the causes of others remain unclear. We present a comprehensive intraspecific population comparison for the cosmopolitan yellow dung fly Scathophaga stercoraria (Diptera: Scathophagidae) to check for consistent world-wide patterns. Common garden assessment of various life history traits permitted continental comparison of (clinal) quantitative genetic differentiation (Qst) with putatively neutral genetic differentiation (Fst) derived from field-caught flies. Latitudinal clines in fly development time, growth rate, and overwintering propensity were consistent among North American, European and Japanese populations. Increased winter dormancy incidence and duration at higher latitude, combined with a faster growth rate and shorter development time, suggest that flies are adaptated to season length more than to temperature. The resulting body size clines, in contrast, were not very consistent; importantly, they were not negative, as expected under seasonal constraints, but flat or even positive clines. Quantitative genetic differentiation Q(ST) exceeded neutral molecular variation F-ST for most traits, suggesting that natural selection plays a consistent role in mediating global dung fly life histories. We conclude that faster growth and development in response to shorter growing seasons at higher latitudes may indirectly counteract expected direct effects of temperature on body-size, potentially resulting in flat or inconsistent body size clines in nature.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- body size
- development time
- diapause
- Fst
- geographic differentiation
- genetic differentiation
- growth rate
- latitudinal cline
- life history
- Qst
Publication and Content Type
- ref (subject category)
- art (subject category)
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Ecography
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- By the author/editor
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Blanckenhorn, Wo ...
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Bauerfeind, Step ...
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Berger, David
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Davidowitz, Gogg ...
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Fox, Charles W.
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Guillaume, Frede ...
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Nakamura, Satosh ...
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Nishimura, Kinya
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Sasaki, Hitoshi
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Stillwell, R. Cr ...
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Tachi, Takuji
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Schaefer, Martin ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Ecography
- By the university
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Uppsala University