A5080825699- Fish Ecology and Management Studies
- Genetic diversity and population structure
- Fish Biology and Ecology Studies
- Identification and Quantification in Food
- Environmental DNA in Biodiversity Studies
- Microbial Community Ecology and Physiology
- Genetic and phenotypic traits in livestock
- Marine Bivalve and Aquaculture Studies
- Aquatic Invertebrate Ecology and Behavior
- Genomics and Phylogenetic Studies
- Hydrology and Sediment Transport Processes
- Fish biology, ecology, and behavior
- Species Distribution and Climate Change
- Genetic Mapping and Diversity in Plants and Animals
- Wildlife Ecology and Conservation
- Ecology and biodiversity studies
- Biopolymer Synthesis and Applications
- Marine and fisheries research
- Crustacean biology and ecology
- Animal Ecology and Behavior Studies
New South Wales Department of Primary Industries
2011-2024
Charles Sturt University
2021-2024
Deakin University
2014
Museums Victoria
2014
Monash University
2007-2011
Abstract Environmental DNA (eDNA)‐based methods are increasingly used by government agencies to detect pests and threatened species, for broader biodiversity monitoring. Given rapid technological advances a growing number of commercial service providers, there is need standardize quality assurance maintain confidence in eDNA‐based results. Here, we introduce two documents provide best‐practice guidelines Australian New Zealand eDNA researchers end‐users (available from...
Freshwater ecosystems and their biota are under increasing pressure from anthropogenic stressors. In response to declining fish stocks, hatchery stocking programmes widely implemented as core components of restoration management strategies, with positive outcomes for some wild populations. Despite this, remains contentious due potential genetic ecological risks Monitoring evaluation critical ensuring the long-term sustainability populations, but identification stocked individuals...
Monitoring long-term spatiotemporal changes in populations of vulnerable species requires non-lethal methods. Here we investigate the utility environmental DNA (eDNA) for estimating relative biomass and abundance globally Endangered mulloway ( Argyrosomus japonicus ) a southeastern Australian estuary. During minimal tidal movement, 10 parallel transects at each 12 sites were surveyed, involving water samples being collected determining eDNA concentrations prior to hydroacoustics used...
Abstract Adaptive differences across species’ ranges can have important implications for population persistence and conservation management decisions. Despite advances in genomic technologies, detecting adaptive variation natural populations remains challenging. Key challenges gene–environment association studies involve distinguishing the effects of drift from those selection identifying subtle signatures polygenic adaptation. We used paired‐end restriction site‐associated DNA sequencing...
Context Native fish populations in Australia’s Murray–Darling Basin (MDB) have experienced severe declines since European settlement. Information on their status is needed to guide management and recovery. Aims To quantify trends MDB New South Wales (NSW) from 1994 2022. Methods Relative abundance, biomass, size structure were examined using generalised additive mixed models at NSW river catchment (valley) scales for five native species (Murray cod, Maccullochella peelii; golden perch,...
In response to the need augment electrofishing surveys of golden perch, Macquaria ambigua (an important endemic freshwater fish in southeastern Australia), with other non-lethal survey methods, utility environmental DNA (eDNA) as an index relative abundance/biomass was investigated. From three adjacent rivers, five sites each were sampled for eDNA immediately before during sequential years. Up six individuals or 10 kg electrofished perch (200–548 mm total length) caught observed site −1 ....
Stocking of freshwater fish species with hatchery-bred is a common response to depleted wild stocks, but may have numerous genetic implications. Murray cod, Maccullochella peelii (Mitchell), been produced in captivity for stocking programs more than 30 years. The potential impacts this program on populations was investigated by using eight microsatellite markers determine the parentage 1380 offspring from 46 separate spawnings collected over three consecutive breeding seasons, and estimating...
Stocking wild fish populations with hatchery-bred has numerous genetic implications for species worldwide. In the present study, 16 microsatellite loci were used to determine effects of nearly three decades Murray cod (Maccullochella peelii peelii) stocking in five river catchments southern Australia. Genetic parameters taken from scale samples collected 1949 1954 before commencement compared 28 years after commenced, and a local hatchery that supplements these catchments. Given are highly...
Microsatellite markers were utilized to examine the genetic structure of Murray cod Maccullochella peelii throughout its distribution in Murray--Darling Basin (MDB) eastern Australia, and assess effects over three decades stocking hatchery-reared fingerlings. Bayesian analysis using programme Structure indicated that species is largely genetically panmictic much extensive range, most probably due high level connectivity between catchments. Three catchments with terminal wetlands (the...
River regulation infrastructure has been implicated in worldwide aquatic biodiversity loss. In‐stream barriers such as weirs prevent fish migration and the impact can be particularly severe for diadromous species. Fishways are frequently installed on in‐stream to reconnect migratory pathways rehabilitate populations. Sequential fishways may necessary rivers where multiple migration. We monitored a coastal community's response passage restoration at 10 predominantly low‐level freshwater...
Abstract Australian abalone species are subject to wild harvest and aquaculture production. This study characterized 125 polymorphic microsatellite markers in the blacklip abalone, Haliotis rubra , evaluated cross‐species amplification laevigata coccoradiata . Segregation analysis of a mapping family revealed non‐amplifying polymerase chain reaction null alleles at 34 loci. Cross‐species was achieved for 89
The objective of this study was to identify QTL for growth rate in the blacklip abalone Haliotis rubra using selective DNA pooling. Three full-sibling families H. derived from crosses wild broodstock were used. extracted largest and smallest 10% progeny combined into two pools each phenotypic tail. typed with 139 microsatellites, markers showing significant differences between peak height ratios alleles inherited parents individually genotyped analysed by interval mapping. A strong...
Abstract Murray cod, Maccullochella peelii (Mitchell) is an iconic Australian species endemic to the Murray‐Darling Basin (MDB) of inland south‐eastern Australia. cod has been a valuable food source and supported large commercial fishery throughout much 20th century. Over‐fishing habitat destruction have resulted in significant declines populations its range. Since early 1980s, numbers stocked into waterways support both recreational fishing conservation efforts. In this study, likely...
Genomic vulnerability is a measure of how much evolutionary change required for population to maintain optimal genotype-environment associations under projected climates. Aquatic species, and in particular migratory ectotherms, are largely underrepresented studies genomic vulnerability. Such species might be well equipped tracking suitable habitat spreading diversity that could promote adaptation future We characterised range-wide the fisheries-important golden perch (Macquaria ambigua) from...
Context Rapid human population growth has increased demand for water supply, food security, electricity, and flood mitigation worldwide. To address these challenges, governments have invested heavily in the expansion of infrastructure. However, there is substantial evidence that globally, this infrastructure impacts aquatic ecosystems can a significant impact on persistence fish species. Despite being well understood dams been given scant attention Indonesia. Thus, considerations are rarely...
Mitochondrial sequence data is often used to reconstruct the demographic history of Pleistocene populations in an effort understand how species have responded past climate change events. However, departures from neutral equilibrium conditions can confound evolutionary inference with structured or those that experienced periods population expansion decline. Selection affect patterns mitochondrial DNA variation and variable mutation rates among genes compromise inferences drawn single markers....
Abstract Analysis of environmental (e)DNA can facilitate an understanding the presence and distribution aquatic species. However, eDNA detection using quantitative PCR requires validated standardized species‐specific assay designs. This study presents two assays to detect Murray cod, Maccullochella peelii , mulloway, Argyrosomus japonicus (two ecologically vulnerable Australian species), based on small fragments mitochondrial 12S ribosomal RNA gene. A comprehensive description development,...
Abstract This study reports the isolation and characterization of microsatellite DNA markers in a mahseer species, Tor tambroides (Pisces, Cyprinidae). Of total 14 loci evaluated, 10 were polymorphic T. samples, with an average 2.86 alleles per locus. Deviations from Hardy–Weinberg equilibrium observed at one locus there was no indication linkage disequilibrium among loci. A high level cross‐amplification four congeners achieved, 12 successfully amplifying 11 showing polymorphism least other...
Abstract We have isolated 102 polymorphic microsatellite loci from an enriched Murray cod DNA library and also assessed their amplification success in 13 native six introduced freshwater fish species. The will serve the dual purpose of assessing wild population genetic structure for future conservation efforts, identifying markers key quantitative trait important aquaculture.