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Titolo:
DOES ANT DISPERSAL OF SEEDS IN SCLEROLAENA-DIACANTHA (CHENOPODIACEAE)GENERATE LOCAL SPATIAL GENETIC-STRUCTURE
Autore:
PEAKALL R; BEATTIE AJ;
Indirizzi:
AUSTRALIAN NATL UNIV,DIV BOT & ZOOL CANBERRA ACT 0200 AUSTRALIA MACQUARIE UNIV,SCH BIOL SCI N RYDE NSW 2109 AUSTRALIA
Titolo Testata:
Heredity
, volume: 75, anno: 1995,
parte:, 4
pagine: 351 - 361
SICI:
0018-067X(1995)75:<351:DADOSI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUTO-CORRELATION ANALYSIS; AUTOCORRELATION ANALYSIS; PLANT-POPULATIONS; BLACK SPRUCE; GENOTYPES; SELECTION; DISTANCE; STANDS; PINE;
Keywords:
ANT DISPERSAL; GENE CORRELATION; GENE FLOW; GENETIC STRUCTURE; RELATEDNESS; SPATIAL AUTOCORRELATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
R. Peakall e A.J. Beattie, "DOES ANT DISPERSAL OF SEEDS IN SCLEROLAENA-DIACANTHA (CHENOPODIACEAE)GENERATE LOCAL SPATIAL GENETIC-STRUCTURE", Heredity, 75, 1995, pp. 351-361

Abstract

Sclerolaena diacantha is unusual in that it can exhibit contrasting diaspore dispersal at adjacent sites. At most sites, the diaspores merely fall to the ground where secondary dispersal occurs. However, at some sites ants actively collect the diaspore that contains a food body and subsequently thousands of seeds accumulate on the long-lived ant mounds. The study evaluated the patterns of local spatial genetic structure within and among replicated sites with and without ant dispersal. Spatial autocorrelation, relatedness coefficients and gene correlation statistics based on four polymorphic allozyme loci showed that localspatial structure was minimal at two sites without ant dispersal. In contrast, moderate local spatial structure was apparent at one of the ant-dispersed sites whereas weak spatial structure was detected at theother. Restricted diaspore dispersal centred on long-li led ant mounds may explain the observed spatial structure at the first site whereasother forces appear to have contributed to the erosion of spatial structure at the second site. This multisite spatial study highlights thecomplexity of the interacting forces that may create or erode geneticstructure in natural plant populations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 15:53:40