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Titolo:
Skewed paternity and sex allocation in hermaphroditic plants and animals
Autore:
Greeff, JM; Nason, JD; Compton, SG;
Indirizzi:
Univ Pretoria, Dept Genet, ZA-0002 Pretoria, South Africa Univ Pretoria Pretoria South Africa ZA-0002 -0002 Pretoria, South Africa Iowa State Univ, Dept Bot, Ames, IA 50011 USA Iowa State Univ Ames IA USA50011 tate Univ, Dept Bot, Ames, IA 50011 USA Univ Leeds, Ctr Biodivers & Conservat, Sch Biol, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1481, volume: 268, anno: 2001,
pagine: 2143 - 2147
SICI:
0962-8452(20011022)268:1481<2143:SPASAI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPERM COMPETITION GAMES; BREEDING STRUCTURE; GENE FLOW; FIG; POLLINATORS; PRECEDENCE; EVOLUTION;
Keywords:
sex allocation; Ficus; paternity; sperm competition; local mate competition;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Greeff, JM Univ Pretoria, Dept Genet, ZA-0002 Pretoria, South Africa Univ Pretoria Pretoria South Africa ZA-0002 ria, South Africa
Citazione:
J.M. Greeff et al., "Skewed paternity and sex allocation in hermaphroditic plants and animals", P ROY SOC B, 268(1481), 2001, pp. 2143-2147

Abstract

Models predict a reduced allocation to sperm when females preferentially use one of two males' sperm and the males do not know who is favoured. An analogous discounting occurs in plants when their paternity success is skewedby random, non-heritable factors such as location in the population and pollinator behaviour. We present a model that shows that skewed paternity call affect the sex allocation of hermaphrodites, that is it leads to a female-biased investment. The model highlights the close links between local matecompetition and sperm competition. We use paternity data front Ficus in order to illustrate that skews in paternity success can lead to a high degreeof sibling gamete competition in all apparently open breeding system. Since skews in paternity arc ubiquitous in hermaphroditic plants and animals these findings should apply broadly.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 10:50:26