Song, Yixian ; Drossel, Barbara ; Scheu, Stefan (2010)
Temporal patterns of resource use in an ecological model of sexual reproduction and geographic parthenogenesis.
In: Evolutionary Ecology Research, 12
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Questions: How are the prevalence of sexual reproduction and the phenomenon of geographic parthenogenesis related to resource availability? What is the pattern in space of resource and consumer dynamics?

Mathematical methods: A population dynamics model with structured resources in short supply, including a spatial gradient of consumer mortality and resource diversity. Species are modelled using quantitative genetics, combined with random mating for sexuals and clonal reproduction for asexuals.

Key assumptions: Resources are limited and re-grow slowly. Only a few consumer genotypes can co-exist locally. The twofold cost of sex is incurred once per season.

Conclusions: The advantage of sexual reproduction is due to the ability of the sexual population to generate offspring that can use resources that have not been exploited for some time. Resource use of the sexual population, therefore, changes continuously. This advantage is most significant at the centre of a species’ range.

Typ des Eintrags:	Artikel
Erschienen:	2010
Autor(en):	Song, Yixian ; Drossel, Barbara ; Scheu, Stefan
Art des Eintrags:	Bibliographie
Titel:	Temporal patterns of resource use in an ecological model of sexual reproduction and geographic parthenogenesis
Sprache:	Englisch
Publikationsjahr:	2010
Titel der Zeitschrift, Zeitung oder Schriftenreihe:	Evolutionary Ecology Research
Jahrgang/Volume einer Zeitschrift:	12
Zugehörige Links:	Verwandtes Werk Verlag
Kurzbeschreibung (Abstract):	Questions: How are the prevalence of sexual reproduction and the phenomenon of geographic parthenogenesis related to resource availability? What is the pattern in space of resource and consumer dynamics? Mathematical methods: A population dynamics model with structured resources in short supply, including a spatial gradient of consumer mortality and resource diversity. Species are modelled using quantitative genetics, combined with random mating for sexuals and clonal reproduction for asexuals. Key assumptions: Resources are limited and re-grow slowly. Only a few consumer genotypes can co-exist locally. The twofold cost of sex is incurred once per season. Conclusions: The advantage of sexual reproduction is due to the ability of the sexual population to generate offspring that can use resources that have not been exploited for some time. Resource use of the sexual population, therefore, changes continuously. This advantage is most significant at the centre of a species’ range.
Freie Schlagworte:	genetic variance, Red Queen, resource dynamics, spatial variation, tangled bank
Fachbereich(e)/-gebiet(e):	05 Fachbereich Physik 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) > Statistische Physik und komplexe Systeme
Hinterlegungsdatum:	10 Nov 2011 14:10
Letzte Änderung:	25 Jun 2024 12:39
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• Temporal patterns of resource use in an ecological model of sexual reproduction and geographic parthenogenesis. (deposited 08 Nov 2011 14:49)
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