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Titolo:
PRIORITY EFFECTS AND SPECIES COEXISTENCE - EXPERIMENTS WITH FUNGAL-BREEDING DROSOPHILA
Autore:
SHORROCKS B; BINGLEY M;
Indirizzi:
UNIV LEEDS,DEPT PURE & APPL BIOL LEEDS LS2 9JT W YORKSHIRE ENGLAND
Titolo Testata:
Journal of Animal Ecology
fascicolo: 4, volume: 63, anno: 1994,
pagine: 799 - 806
SICI:
0021-8790(1994)63:4<799:PEASC->2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHALLUS-IMPUDICUS PERS; EPHEMERAL RESOURCE; DENSITY DEPENDENCE; PATCHY ENVIRONMENT; MYCOPHAGOUS DROSOPHILA; REGIONAL COEXISTENCE; SIMULATION-MODEL; COMPETITION; AGGREGATION; VARIABILITY;
Keywords:
COEXISTENCE; COMPETITION; DROSOPHILA-PHALERATA; DROSOPHILA-SUBOBSCURA; PRIORITY EFFECT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
B. Shorrocks e M. Bingley, "PRIORITY EFFECTS AND SPECIES COEXISTENCE - EXPERIMENTS WITH FUNGAL-BREEDING DROSOPHILA", Journal of Animal Ecology, 63(4), 1994, pp. 799-806

Abstract

1. Priority experiments were carried out using the fungal-breeding species Drosophila phalerata and D. subobscura and the mushroom Agaricusbispora forma albida. 2. Field experiments showed that an ovipositionwindow exists for these species and that priority in increments of 1 day are suitable for laboratory experiments. 3. Priority (arriving first) had a clear effect upon three components of 'fitness'. When a species arrived late it had lower survival, smaller size and longer developmental time. 4. A priority model [based upon the 'aggregation model' of Atkinson & Shorrocks (1981)] showed that traditional priority (bothspecies arrive on average together, but with a range of priorities) does not significantly contribute to coexistence. 5. When the average arrival time is moved so that more fugitive situations are modelled, then priority can have a marked effect upon coexistence. 6. Both 'priority' and 'fugitive' situations are dominated by realistic amounts of intraspecific aggregation. This has implications for metapopulation dynamics.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 23:49:57