A5055629615- Fish Ecology and Management Studies
- Marine and fisheries research
- Fish Biology and Ecology Studies
- Marine animal studies overview
- Physiological and biochemical adaptations
- Animal Behavior and Reproduction
- Aquatic Invertebrate Ecology and Behavior
- Fish biology, ecology, and behavior
- Ichthyology and Marine Biology
- Microplastics and Plastic Pollution
- Cephalopods and Marine Biology
- Coral and Marine Ecosystems Studies
- Reproductive biology and impacts on aquatic species
- Aquaculture Nutrition and Growth
- Toxic Organic Pollutants Impact
- Marine Bivalve and Aquaculture Studies
New South Wales Department of Primary Industries
2011-2023
Environmental Earth Sciences
2012-2023
UNSW Sydney
2012-2023
IC Independent Consulting (Australia)
2010-2014
University of Wollongong
2013
Summary Temperature strongly regulates the distribution and fitness of ectotherms, many studies have measured temperature dependence physiological performance in controlled laboratory settings. In contrast, little is known about how influences ectotherm wild, so ecological significance as unclear. Our aim was to measure wild for several species fishes explore temperatures that maximize ( T optE ) are related biogeographies. We gathered body activity growth data from nine tropical temperate...
Activity rhythms are ubiquitous in nature, and generally synchronized with the day–night cycle. Several taxa have been shown to switch between nocturnal diurnal activity response environmental variability, these relatively uncommon switches provide a basis for greater understanding of mechanisms adaptive significance circadian (approx. 24 h) rhythms. Plasticity has identified association variety factors, from changes predation pressure an altered nutritional or social status. Here, we report...
Abstract Delineation of population structure (i.e. stocks) is crucial to successfully manage exploited species and address conservation concerns for threatened species. Fish migration associated movements are key mechanisms through which discrete populations mix thus important determinants structure. Detailed information on fish becoming more accessible advances in telemetry analysis methods however such not yet used systematically stock assessment. Here, we described how detections...
Abstract Theoretical and laboratory studies generally show ectotherm performance increases with temperature to an optimum, subsequently declines. Several physiological mechanisms likely shape thermal curves, but responses of free-ranging animals variation will represent a compromise between these ecological constraints. Thermal data from wild balancing physiology ecology is rare, this represents hindrance for predicting population impacts future change. We used internally-implanted...
ABSTRACT The migratory response and behaviour of catadromous Australian bass with regard to hourly mean river flows water temperatures was assessed over 15 months. Fish movement using a 75‐km passive acoustic telemetry array in the regulated Shoalhaven River below Tallowa Dam, NSW, Australia. majority (62%) downstream pre‐spawning migrations from freshwater estuarine habitats were stimulated by series flow pulses April September, but proportion fish (38%) commenced under baseflow conditions...
Abstract – Understanding movement patterns and habitat utilisation is critical for the management of diadromous fishes. An acoustic telemetry array was used to monitor 33 estuary perch, Macquaria colonorum 39 Australian bass, novemaculeata in freshwater estuarine reaches on Shoalhaven River, south‐east Australia. On average, tagged M. were detected a considerably shorter period than , evidence suggested that fishing pressure may have impacted their survival. displayed significant shifts...
Physicochemical variability in estuarine systems plays an important role processes and the lifecycles of organisms. In particular, seasonality freshwater inflow to estuaries may be various aspects fish lifecycles. This study aimed further understand these relationships by studying movements a top-level predator response physicochemical large, temperate south-east Australian estuary (Shoalhaven River). Mulloway (Argyrosomus japonicus, 47–89 cm total length) were surgically implanted with...
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,...
Animal activity patterns evolve as an optimal balance between energy use, acquisition, and predation risk, so understanding how animals partition relative to extrinsic environmental fluctuations is central their ecology, biology physiology. Here we use accelerometry examine the degree which of estuarine teleost predator are driven by a series rhythmic arrhythmic fluctuations. We implanted free-ranging bream Acanthopagrus australis with acoustic transmitters that measured bi-axial...
Determining the links among estuarine hydrography, habitat and spawning of estuarine-dependent fish is essential for understanding reproductive dynamics, recruitment processes directing conservation efforts. Acoustic tracking was used to evaluate fine-scale spatial temporal patterns in activity Percalates colonorum (estuary perch) within Shoalhaven River, south-eastern Australia. Plankton tows were determine timing events. Tagged P. exhibited movements restricted areas structurally complex...
Temperate basses and perches (family Percichthyidae) worldwide have declined in distribution abundance during the past few decades due to anthropogenic impacts such as fishing, habitat degradation alteration river flows. This study examined differences age, growth longevity of Macquaria colonorum among three south-eastern Australian coastal rivers. Estimates ages were made by counting opaque zones sectioned otoliths. Ages validated using marginal increment analysis, staining fish otoliths...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 528:267-275 (2015) - DOI: https://doi.org/10.3354/meps11285 Rain-driven changes in fish dynamics: a switch from spatial temporal segregation Nicholas L. Payne1,2,*, Dylan E. van der Meulen1,3, Iain M. Suthers1,4, Charles A. Gray1,5, Chris T. Walsh3, Matthew D. Taylor6 1School of Biological, Earth and...
AbstractUnifying models have shown that the amount of space used by animals (e.g., activity space, home range) scales allometrically with body mass for terrestrial taxa; however, such relationships are far less clear marine species. We compiled movement data from 1,596 individuals across 79 taxa collected using a continental passive acoustic telemetry network receivers to assess allometric scaling space. found ectothermic do exhibit an overall exponent 0.64. However, alone explained only 35%...
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 21:127-142 (2014) - DOI: https://doi.org/10.3354/ab00578 Depth interactions and reproductive ecology of sympatric Sillaginidae: Sillago robusta S. flindersi Charles A. Gray1,2,3,*, Lachlan M. Barnes1,4, Dylan E. van der Meulen1,5, Benjamin W. Kendall1,6, Faith Ochwada-Doyle1,7, William D. Robbins1,8 1NSW Primary Industries, Cronulla...
Abstract Fish assemblages in dryland rivers have life‐history strategies that evolved response to environmental conditions and triggers, particularly water temperatures flow regimes. The regulation of through the construction dams, weirs other diversion structures has altered natural regimes associated ecological processes river systems worldwide. Over a 3‐year period, using standardized fish sampling daily otolith ageing, recruitment eight freshwater species was monitored various abiotic...
This study assessed variability in the length and age compositions, longevity, length-at-age rates of growth mortality east Australian stout whiting Sillago robusta Stead, 1908 population harvested by demersal trawl fisheries. Sampling was done over 2 years spatially stratified across three depth strata between 11 90 m at two locations approximately 400 km apart. There were no consistent depth-related differences but mean median greater lower latitude location. Age classes 3 dominated...
Understanding the impacts of extreme events is essential to effective fisheries management. During summer 2018–19 millions native fish died in Lower Darling–Baaka River adjacent Menindee, New South Wales, Australia. Hypoxia during a period protracted low flow, triggered by climatic events, was responsible for kills. From June 2019 March 2020, further broader-scale kills occurred throughout ~600 km as disconnected refuge pools contracted and water quality deteriorated. This study examined...