Burrowing, Emergence, Behavior, and Functional Morphology of the Australian Salamanderfish,<i>Lepidogalaxias salamandroides</i>

Berra, Tim M.; Allen, Gerald R.

doi:10.1577/1548-8446(1989)014<0002:bebafm>2.0.co;2

Cited by 35 publications

(16 citation statements)

References 4 publications

(4 reference statements)

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“…Three of the eight species, Lepidogalrxius szrlanzandvoides Mees (Lepidogalaxiidae), Galaxiella nigrostviota 808 0022--1 I l2/95/l 10808+ 18 $12.00/0 s f ) (Shipway) (Galaxiidae) and Nannatherina balstoni Regan (Nannopercidae), have a very restricted distribution, occurring only in the acidic pools, streams and lakes of the peat flats in the extreme south-western corner of Australia (Christensen, 1982;Allen, 1982;Pusey & Edward, 1990~). The very dry summers, characteristic of this region, result in many of the pools becoming either very low in water or even dry during the late summer and autumn (Berra & Allen, 1989). One of the three species, L. salamanduoides, possesses a combination of morphological, physiological and behavioural adaptations that enable it to aestivate, and thus survive in pools that become dry in that period (Berra & Allen, 1989;Pusey, 1989Pusey, , 1990.…”

Section: Introductionmentioning

confidence: 99%

Life cycle, growth and diet of Balston's pygmy perch in its natural habitat of acidic pools in south‐western Australia

Morgan¹,

Gill²,

Potter³

1995

Journal of Fish Biology

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Nunnutlierinu hulsroni is found in a few acidic pools (pH 3.9-6.0) in the extreme south-western corner of Australia. Although many of these pools become dry during summer and early autumn, they are recolonized by fish from nearby pools that overflow during winter Hoods. N. hdstoni spawns at the end of its first year of life, when, on average, the males and females have reached 60 and 63 mni .r.L., respectively, and then usually die within the next few months. The largest fish, which was one of only three in its third year of life, measured 90 mm and weighed 7.3 g. The von Bertalanffy growth curve parameters for K and to were 71.2 mm, 1.69 and -0,078 for males and 82.6 mm, I .3 I and ~ 0.095 for females. Fecundity ranged from 550 to 1600. N . hulsro/7i spawns during the middle of winter, after heavy flooding and when water temperatures are at, or close to. their annual minima. This enables the larvae and young juveniles to capitalize on those aquatic organisms, especially Cladocera, which are very abundant amongst the flooded riparian begetation that surrounds the pools in winter and spring. Hence, the fish grow rapidly and attain an appreciable aiLe belhrc stinimei-, when the increases that occur in the densities of the larger carnivorous fish species, as a result of marked declines i n water levels, increases the chances of predation. By spring, when most N. hufsioni exceed 25 rnm T.L., the diet changes markedly to one that consists almost exclusively of terrestrial fauna. In contrast, three of the six co-occurring native species of teleost fecd on aquatic and terrestrial fauna throughout the year, while a further two feed only within the water column and the sixth feeds on benthic invertebrates. The pronounced shift in diet exhibited by N . hakioni as it increases in size, allied to dietary differences amongst the other six co-occurring species, reduces any potential for interspecific competition Tor food resources during the summer and autumn. when such resources are declining. I ' 1995 The Fichcries Society of the British Isles

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Section: Introductionmentioning

confidence: 99%

Life cycle, growth and diet of Balston's pygmy perch in its natural habitat of acidic pools in south‐western Australia

Morgan¹,

Gill²,

Potter³

1995

Journal of Fish Biology

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“…Other aquatic invertebrates take refuge in moist depressions, under woody debris and leaf litter, or in crevices under rocks, or they burrow into the riverbed itself (Chester and Robson 2011). Some fish species aestivate in dry riverbeds until they are rewetted (Berra and Allen 1989). Such a strategy may provide these fish with a competitive advantage over other fish species that recolonize from upstream, downstream, or lateral refugial pools when flow resumes.…”

Section: Refuge For Specialized Aquatic Biotamentioning

confidence: 99%

When the river runs dry: human and ecological values of dry riverbeds

Steward¹,

Schiller²,

Tockner³

et al. 2012

Frontiers in Ecol & Environ

258

255

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Temporary rivers and streams that naturally cease to flow and dry up can be found on every continent. Many other water courses that were once perennial now also have temporary flow regimes due to the effects of water extraction for human use or as a result of changes in land use and climate. The dry beds of these temporary rivers are an integral part of river landscapes. We discuss their importance in human culture and their unique diversity of aquatic, amphibious, and terrestrial biota. We also describe their role as seed and egg banks for aquatic biota, as dispersal corridors and temporal ecotones linking wet and dry phases, and as sites for the storage and processing of organic matter and nutrients. In light of these valuable functions, dry riverbeds need to be fully integrated into river management policies and monitoring programs. We also identify key knowledge gaps and suggest research questions concerning the values of dry riverbeds.

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“…Some riffl e species can use the hyporheic zone during riffl e drying (Berra and Allen 1989, Gagen et al 1998, Stegman and Minckley 1959. However, Weston (2006) failed to fi nd any individuals occupying pits dug into the thalweg of MFB during riffl e drying.…”

Section: Density Estimatesmentioning

confidence: 99%

Density Dynamics of a Threatened Species of Darter at Spatial and Temporal Scales

Wine¹,

Weston²,

Johnson³

2008

Southeastern Naturalist

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Burrowing, Emergence, Behavior, and Functional Morphology of the Australian Salamanderfish,Lepidogalaxias salamandroides

Cited by 35 publications

References 4 publications

Life cycle, growth and diet of Balston's pygmy perch in its natural habitat of acidic pools in south‐western Australia

Life cycle, growth and diet of Balston's pygmy perch in its natural habitat of acidic pools in south‐western Australia

When the river runs dry: human and ecological values of dry riverbeds

Density Dynamics of a Threatened Species of Darter at Spatial and Temporal Scales

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