TRaCK: Tropical Rivers and Coastal Knowledge

Science and knowledge that governments, communities, industries for sustainable use of Australia's tropical rivers and estuaries

The Rainbow Connection: An integrative approach to identifying melanotaeniid (Melanotaenia splendida inornata) dispersal in response to flooding.

TitleThe Rainbow Connection: An integrative approach to identifying melanotaeniid (Melanotaenia splendida inornata) dispersal in response to flooding.
Publication TypeConference Participation
Year of Publication2010
AuthorsMills, CE, Hadwen, WL, Schmidt, D, Hughes, JM
Keywords5: Foodwebs and biodiversity
Abstract

While genetic markers or stable isotope signatures are frequently applied to resolve patterns of dispersal, very rarely are these methods used in conjunction as a way of determining migration events in different time scales. As genetic markers can investigate gene flow in ancestral populations, stable isotope analyses can complement dispersal studies by revealing very recent patterns of migration. A combination of microsatellite loci and stable isotope analyses (using C and N) were used to investigate the effects of Wet Season flooding on dispersal of the Chequered Rainbowfish (Melanotaenia splendida inornata) in tropical Queensland (Australia). Samples were collected from the Mitchell River headwaters to capture the 2009/2010 Wet Season. Populations were identified using genetic and stable isotope analyses, with immigrants being outlying individuals of defined populations. By comparing and contrasting these two measurements of dispersal, an integrated and holistic approach to identifying important dispersal corridors may be gained.

URLhttp://www.aslo.org/meetings/santafe2010/files/aslo_nabs_2010-abstracts.pdf