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Titolo:
SPATIAL AUTOCORRELATION ANALYSIS OF SMALL-SCALE GENETIC-STRUCTURE IN A CLONAL SOFT CORAL WITH LIMITED LARVAL DISPERSAL
Autore:
MCFADDEN CS; AYDIN KY;
Indirizzi:
HARVEY MUDD COLL,DEPT BIOL CLAREMONT CA 91711
Titolo Testata:
Marine Biology
fascicolo: 2, volume: 126, anno: 1996,
pagine: 215 - 224
SICI:
0025-3162(1996)126:2<215:SAAOSG>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUTO-CORRELATION ANALYSIS; OCTOCORAL BRIAREUM-ASBESTINUM; ANEMONE ACTINIA-TENEBROSA; GREAT-BARRIER-REEF; POCILLOPORA-DAMICORNIS; ASEXUAL REPRODUCTION; BALANOPHYLLIA-ELEGANS; POPULATION-STRUCTURE; IMPATIENS-CAPENSIS; LOCAL-POPULATIONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
74
Recensione:
Indirizzi per estratti:
Citazione:
C.S. Mcfadden e K.Y. Aydin, "SPATIAL AUTOCORRELATION ANALYSIS OF SMALL-SCALE GENETIC-STRUCTURE IN A CLONAL SOFT CORAL WITH LIMITED LARVAL DISPERSAL", Marine Biology, 126(2), 1996, pp. 215-224

Abstract

The philopatric larval dispersal and small effective population sizescharacteristic of many clonal species should promote the development of significant small-scale genetic structure within populations as a result of isolation-by-distance. We used spatial autocorrelation statistics to detect genetic structure, arising from both clonal reproduction and philopatric dispersal of sexual propagules, for five allozyme loci within populations of the soft coral Alcyonium sp. In a population on Tatoosh Island, Washington, USA, sampled in 1991/1992, we found significant positive spatial autocorrelation at all loci among individuals separated by < 40 cm, reflecting the presence of significant small-scale genetic structure due to associations among clonemates. For 4 of 5 loci, however, we detected no significant spatial autocorrelation among the different clones within this population over distances of 1 to40 m. Analysis of soft-coral populations from six additional, topographically diverse sites in the north-east Pacific also did not reveal significant spatial autocorrelation among clones at any loci. This general lack of spatial autocorrelation of genotypes among clones suggeststhat significant small-scale genetic structure has not arisen in populations of Alcyonium sp. as a consequence of isolation-by-distance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 14:27:00