Movements of <i>Macquaria ambigua</i>, in the Murray River, south‐eastern Australia

O’Connor, J. P.; O’Mahony, Damien J.; O’Mahony, Justin

doi:10.1111/j.0022-1112.2005.00604.x

Cited by 69 publications

(106 citation statements)

References 14 publications

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“…Small ranges have been found previously in this species based on a markrecapture study (Lintermans, 1998), and in river blackfish based on radio-tracking (Khan et al, 2004;Koster & Crook, 2008). Similar findings have been made with members of the closely related family Percichthyidae (Simpson & Mapleston, 2002;Crook, 2004;O'Connor et al, 2005;Thiem et al, 2008;Ebner & Thiem, 2009;Koehn et al, 2009). Lintermans (1998) concluded that limited movement by twospined blackfish was most likely due to a behavioural, not physical or mechanical, phenomenon, and that larger individuals appear to be more sedentary than smaller individuals.…”

Section: Discussionsupporting

confidence: 86%

Response of two-spined blackfish Gadopsis bispinosus to short-term flow fluctuations in an upland Australian stream

et al. 2011

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Environmental flows are applied to regulated rivers, predominantly with the aim of benefiting native fauna. However, the outcomes for biodiversity and the mechanisms that underpin changes due to these manipulations are poorly understood. We examined the effects of elevated water release, of the magnitude used for riffle maintenance, on the movement and habitat use of the locally-threatened two-spined blackfish, Gadopsis bispinosus, in the Cotter River, a regulated upland stream in south-eastern Australia. We compared the behaviour of radio-tagged individuals during baseline flow conditions (0.12 m 3 s -1 ) and during elevated flow releases (1.74 m 3 s -1 ). Eight individuals (196 ± 8 mm TL) were radio-tracked at one site over 22 days, and six individuals (180 ± 5 mm TL) were monitored by fixed telemetry stations at a second site for 1 month. At both the sites, two-spined blackfish were nocturnal and occupied small linear ranges (23 ± 6 m). They preferentially used pools, but also used runs and riffles. Elevated discharge did not significantly affect movement, activity or dispersal of two-spined blackfish. Two individuals utilised inundated vegetation during high flow. Despite a small number of behavioural changes, there was no response to elevated flow at the population level. It is likely that the benthic nature of this species precludes its behaviour being affected by a 15-fold increase in-stream discharge. However, the indirect effects of flows of this magnitude on two-spined

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Section: Discussionsupporting

confidence: 86%

Response of two-spined blackfish Gadopsis bispinosus to short-term flow fluctuations in an upland Australian stream

et al. 2011

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“…The relatively large-scale breeding and homing movements by M. ikei have also been reported for other Australian percichthyids including Maccullochella peelii (Reynolds 1983, Koehn et al 2009), Macquaria ambigua (Reynolds 1983, O'Connor et al 2005) and estuary perch Macquaria colonorum (Walsh et al 2012). All species have been reported to relocate large distances to breed before returning to the vicinity of their original home-site some months later.…”

Section: Movement Patternsmentioning

confidence: 55%

Movement patterns and habitat selection of the Endangered eastern freshwater cod Maccullochella ikei in the Mann River, Australia

Butler¹,

Rowland²,

Baverstock³

et al. 2014

Endang. Species. Res.

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Movement and migration are fundamental activities in the life history of fishes. It is therefore critical in species conservation that there is a clear understanding of why movements or changes in habitat occur. The aim of the present study was to quantify the movement patterns and habitat selection of the Endangered eastern freshwater cod Maccullochella ikei in relation to river discharge, water temperature and season. Twenty-five adult M. ikei were implanted with radio tags and tracked for 12 mo in the Mann River, Australia. Fish were located manually once a week, whilst larger inter-pool movements were monitored continuously by automated tracking stations. Ten 24 h continuous tracking events were undertaken to quantify diel movement patterns. Underwater cameras were used to verify fixes and observe behaviour. Based on weekly fixes and tracking station data, 2 main types of behaviour were observed: extended periods of restricted movement and strong home-site fidelity, and short periods of relative high mobility and home-site shifts. Larger intra-and inter-pool movements were most often related to rises in river discharge. There was also increased movement and home-site shifts by males but not females during the breeding season. Diel behaviour was typified by sedentariness during the day and increased crepuscular and nocturnal activity. Habitat selection was for deep pools, and large boulders and woody debris were preferred as cover. These results suggest that the maintenance and restoration of quality habitat and natural flow regimes are essential for the ongoing conservation of remnant populations of M. ikei and for the successful reestablishment of the species in areas where it has become extirpated.

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“…Upstream and downstream spawning migrations, of up to 2500 km, have been suggested to explain spring movements of tagged golden perch (Reynolds 1983;O'Connor et al 2005;Mallen-Cooper and Brand 2007). The present study adds another component to this model with the greatest proportion (94%) of golden perch being adult sized and 41% of these individuals were males in spawning condition.…”

Section: Effectiveness Of the Fishwaymentioning

confidence: 63%

Can a low-gradient vertical-slot fishway provide passage for a lowland river fish community?

Stuart

Zampatti

Baumgartner

2008

Mar. Freshwater Res.

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Fishways are commonly used to restore native fish movements in regulated rivers. In the Murray-Darling Basin, Australia, 14 fishways are to be built by 2011 to improve passage along 2225 km of the river. The first of these fishways, constructed in 2003, is a vertical-slot design with low water velocities (0.98-1.4 m s −1 ) and turbulence (average 42 W m −3 ). This design was selected to provide passage for individuals between 20 and 1000 mm long. To determine passage success, trapping and a remote automated passive integrated transponder (PIT) tag reading system was used from October 2003 to February 2006. In 57 24-h samples at the exit (upstream end) and entrance (downstream end), 13 species and 30 409 fish were collected at a maximum rate of 4415 fish per day. Fish between 31 and 1030 mm successfully ascended the fishway. However, significantly smaller (<31 mm) fish and small-bodied (<50 mm) carp gudgeons (Hypseleotris spp.), a species previously considered non-migratory, were sampled downstream from the entrance of the fishway. The remote PIT tag reading system revealed that 81% of native golden perch (Macquaria ambigua) and 87% of non-native common carp (Cyprinus carpio) successfully ascended the fishway. These data will help maximise the efficiency of future fishways against a series of pre-determined performance criteria.

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Movements of Macquaria ambigua, in the Murray River, south‐eastern Australia

Cited by 69 publications

References 14 publications

Response of two-spined blackfish Gadopsis bispinosus to short-term flow fluctuations in an upland Australian stream

Response of two-spined blackfish Gadopsis bispinosus to short-term flow fluctuations in an upland Australian stream

Movement patterns and habitat selection of the Endangered eastern freshwater cod Maccullochella ikei in the Mann River, Australia

Can a low-gradient vertical-slot fishway provide passage for a lowland river fish community?

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