Match!
Julian M. Hughes
New South Wales Department of Primary Industries
Spawn (biology)EcologyArripis truttaFisheryBiology
22Publications
8H-index
154Citations
What is this?
Publications 28
Newest
#1Hayden T. Schilling (UNSW: University of New South Wales)H-Index: 2
#2Jason D. Everett (UNSW: University of New South Wales)H-Index: 15
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 8 authors...
Source
#1John StewartH-Index: 13
#2Julian M. HughesH-Index: 8
Last. Ashley M. FowlerH-Index: 14
view all 4 authors...
Abstract Freshwater flows into estuaries influence fish populations through effects on recruitment, growth and mortality. We compared year class strength of a large sciaenid Argyrosomus japonicus with rainfall through a 16-year period in southeastern Australia, to understand the influence of freshwater input on this estuary-dependent and depleted population. Relative year class strength, estimated by back-calculating age composition data from commercial fishery landings, was positively related t...
Source
#1Julian M. Hughes (New South Wales Department of Primary Industries)H-Index: 8
#2John Stewart (New South Wales Department of Primary Industries)H-Index: 13
Last. Damian Collins (New South Wales Department of Primary Industries)H-Index: 4
view all 3 authors...
A key factor affecting survival of fish captured from depth and subsequently released is barotrauma – a suite of injuries caused by expanding swim bladder gas and formation of gas embolisms resulting from the decreasing ambient pressure experienced during capture. Mulloway (Argyrosomus japonicus) are an economically-important fishery species in southern Australia often released from deep-water capture suffering from barotrauma. Hyperbaric chambers were therefore used to simulate various catch an...
Source
#1Hayden T. Schilling (UNSW: University of New South Wales)H-Index: 2
#2James A. Smith (UNSW: University of New South Wales)H-Index: 15
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 6 authors...
Pomatomus saltatrix is an important recreational fishing species with seven major populations worldwide. The reproductive biology of the southwest Pacific Ocean (east Australian) population is uncertain, with both an extended spawning and multiple spawning periods previously hypothesised. Here we demonstrate an altered sex ratio biased towards females and a larger length at 50% maturity (L) compared to those recorded for the population 40 years ago, before comprehensive management strategies wer...
Source
#1Julian M. Hughes (New South Wales Department of Primary Industries)H-Index: 8
#2John Stewart (New South Wales Department of Primary Industries)H-Index: 13
Last. Damian Collins (New South Wales Department of Primary Industries)H-Index: 4
view all 3 authors...
Abstract A key factor affecting survival of fish which are captured at depth and subsequently released is barotrauma. Barotrauma are a suite of injuries which occur as a result of the decreasing ambient pressure experienced by a fish during capture and are caused by expanding swim bladder gas and formation of gas embolisms. Snapper (Chrysophrys auratus) are of key importance to both commercial and recreational fisheries in southern Australia and are often released after capture suffering from ba...
1 CitationsSource
#1Christopher L. Lawson (UNSW: University of New South Wales)H-Index: 1
#2Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
Last. Stephanie Brodie (UNSW: University of New South Wales)H-Index: 7
view all 7 authors...
Consumption rates are the foundation of trophic ecology, yet bioenergetics models used to estimate these rates can lack realism by not incorporating the ontogeny of diet. We constructed a bioenergetics model of a marine predatory fish (tailor, Pomatomus saltatrix) that incorporated high-resolution ontogenetic diet variation, and compared consumption estimates to those derived from typical bioenergetics models that do not consider ontogenetic diet variation. We found tailor consumption was over- ...
2 CitationsSource
#1Hayden T. Schilling (UNSW: University of New South Wales)H-Index: 2
#2Julian M. HughesH-Index: 8
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 6 authors...
Pelagic mesopredators are abundant in many marine ecosystems and exert strong top-down influence on food webs. We explored the dietary niche of Pomatomus saltatrix in eastern Australia, using a classification tree analysis to identify key factors driving diet variation. P. saltatrix was shown to be an opportunistic generalist predator which exhibited increased baitfish consumption, and decreased crustacean consumption, with increasing size. The classification tree analysis showed that body size ...
4 CitationsSource
#1Julian M. Hughes (UNSW: University of New South Wales)H-Index: 8
#2John Stewart (UTAS: University of Tasmania)H-Index: 13
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 5 authors...
Knowledge of the influence of both spatial and temporal environmental gradients on life history traits and population demographics is a critical requirement in the management of exploited fish populations. This study examined variation in the demographics of Arripis trutta, an economically-important pelagic fish species with a broad latitudinal distribution in the waters of coastal south-eastern (SE) Australia, a region dominated by the influence of the East Australian Current (EAC). A validated...
4 CitationsSource
#1Julian M. HughesH-Index: 8
#2Andrew J. Rowland (Murdoch University)H-Index: 6
Last. Howard S. Gill (Murdoch University)H-Index: 21
view all 4 authors...
Physoclistous fish are unable to rapidly ascend through the water column without significant risk of barotrauma via swim bladder hyperextension or rupture. Here, we report on the discovery of a highly specialised anatomical structure which permits some physoclistous fish species, the samson fish Seriola hippos and silver trevally Pseudocaranx georgianus, to vent swim bladder gas during ascent. Dissections of injected casts and X-ray imaging revealed the swim bladder ‘vent’ to consist of a membra...
4 CitationsSource
#1Julian M. Hughes (UNSW: University of New South Wales)H-Index: 8
#2John Stewart (New South Wales Department of Primary Industries)H-Index: 13
Last. Iain M. Suthers (UNSW: University of New South Wales)H-Index: 36
view all 5 authors...
This study investigated how the stock structure of Arripis trutta is influenced by the movement of adult fish. Five-year-old fish were sampled from four regions in south-east Australia encompassing ~1500km of coastline. Transverse otolith sections were analysed using laser-ablation inductively coupled plasma-mass spectrometry, providing age-related elemental profiles. Multivariate analyses showed that for most age groups, the elemental fingerprint of northern New South Wales (NSW) fish was signi...
4 CitationsSource
123