Genetic variation in Avicennia marina in three estuaries

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Show simple item record Melville, F. R en_US Burchett, M. en_US 2009-12-21T02:29:11Z 2009-12-21T02:29:11Z 2001 en_US
dc.identifier 2004002936 en_US
dc.identifier.citation Melville, F. and Burchett, M. 2001 'Genetic variation in Avicennia marina in three estuaries', Marine Pollution Bulletin, vol. 44, no. 6, pp. 417-424. en_US
dc.identifier.issn 0025-326X en_US
dc.identifier.other C1 en_US
dc.description.abstract In order to ensure conservation of mangroves, genetic diversity in remaining populations must be explored. Both morphological and isozyme analyses were used and compared in investigating the intra- and inter-estuarine variation in Avicennia marina in Sydney, the most urbanised area in Australia. Sediment characteristics, metal levels, tree attributes, leaf morphology and isozyme/allozyme analyses were conducted. Tree characteristics did not prove to be adequate genetic markers, but leaf morphology may be of use in this species. Isozyme/allozyme analyses indicated that genetic distance corresponded with geographic distance, although habitat metal levels may indicate local selection pressures. High levels of heterozygote deficiencies were displayed in each estuary, which could threaten future viability. The results hold implications for management as periodic isozyme analysis may be useful in indicating management needs. The identification of metal-tolerant types may also be useful. Transplantation among estuaries may assist in increasing genetic diversity, if considered desirable. Whatever the management aims, isozyme/allozyme analyses are shown to be useful for revealing genetic diversity in this species. en_US
dc.publisher Elsevier en_US
dc.relation.isbasedon en_US
dc.title Genetic variation in Avicennia marina in three estuaries en_US
dc.parent Marine Pollution Bulletin en_US
dc.journal.volume 44 en_US
dc.journal.number 6 en_US
dc.publocation Oxford, UK en_US
dc.identifier.startpage 417 en_US
dc.identifier.endpage 424 en_US Cell and Molecular Biology en_US

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