Application of molecular tools for managing wild genetic resources in Australian freshwater crustaceans

Carini Giovanella, . and Bentley Andrew, . and Masci Kate, . and Page Tim, . and Hughes Jane M., . and Sharma Suman, . and Cook Ben, . (2009) Application of molecular tools for managing wild genetic resources in Australian freshwater crustaceans. [Proceedings Paper]

Major threat to the conservation of aquatic genetic diversity are the fragmentation of population by building dams and weirs and extraction of water for irrigation the degradation of aquatic habitat and the movement of water and animals between drainage systems. This paper presents molecular data on the Australian freshwater prawn Macrobrachium australiense to demonstrate the use of molecular markers in the conservation and management of genetic diversity in this species. First mitochondrial DNA sequence data is presented to test hypotheses concerning historical drainage structure. Comparisons are made across four major drainage basins the Gulf of Carpentaria Lake Eyre the Murray Darling and coastal southeast Queensland. The risks of moving animals between these basins are discussed in the light of evidence from another freshwater shrimp Paratya australiensis. Second mitochondrial sequence data and allozymes are used to compare patterns of connectivity within each of these basins. each situated in a different landscape type. Third microsatellite markers are used to assess movement between adjacent waterholes in a single river system. Finally the potential for using genetic data to identify aquatic bioregions is assessed first based on M. australiense data and then on other crustacean and fish species sampled across the same regions.

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Abstract

Major threat to the conservation of aquatic genetic diversity are the fragmentation of population by building dams and weirs and extraction of water for irrigation the degradation of aquatic habitat and the movement of water and animals between drainage systems. This paper presents molecular data on the Australian freshwater prawn Macrobrachium australiense to demonstrate the use of molecular markers in the conservation and management of genetic diversity in this species. First mitochondrial DNA sequence data is presented to test hypotheses concerning historical drainage structure. Comparisons are made across four major drainage basins the Gulf of Carpentaria Lake Eyre the Murray Darling and coastal southeast Queensland. The risks of moving animals between these basins are discussed in the light of evidence from another freshwater shrimp Paratya australiensis. Second mitochondrial sequence data and allozymes are used to compare patterns of connectivity within each of these basins. each situated in a different landscape type. Third microsatellite markers are used to assess movement between adjacent waterholes in a single river system. Finally the potential for using genetic data to identify aquatic bioregions is assessed first based on M. australiense data and then on other crustacean and fish species sampled across the same regions.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SH380.62 M3I61 2008
AGROVOC Term:	Genetic diversity within species
AGROVOC Term:	Dams
AGROVOC Term:	Weirs
AGROVOC Term:	Irrigation
AGROVOC Term:	Aquatic organisms
AGROVOC Term:	Macrobrachium australe
AGROVOC Term:	Drainage
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11924

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