Thermal avoidance in inanga,<i>Galaxias maculatus</i>(Jenyns), from the Waikato River, New Zealand

Boubee, J; Schicker, Kathryn P.; Stancliff, A. G.

doi:10.1080/00288330.1991.9516468

Cited by 11 publications

(12 citation statements)

References 6 publications

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“…Lake Purrumbete is fresh, Lake Bullen Merri is saline and Lake Corangamite hypersaline. Laboratory‐based studies provide little evidence to suggest that oxygen (Boubee et al , 1991), temperature (Dean & Richardson, 1999) or turbidity (Rowe et al , 2002) reach sufficiently extreme levels to negatively affect the galaxid populations, but salinity in Lake Corangamite can exceed the laboratory determined tolerance levels of G. maculatus (LD 50 62) (Chessman & Williams, 1975). Notably, the LD 50 identified in Chessman & Williams (1975) is well below the salinities in which this species was regularly found in Lake Corangamite.…”

Section: Discussionmentioning

confidence: 99%

“…It has a remarkably flexible life history, capable of completing its life cycle within lakes and rivers (Pollard, 1971 a , b , 1972 a , b ) or equally utilizing marginal catadromy (McDowall, 1968 a , 2010). The adaptability of life style is reflected in its tolerance of a wide variety of environmental conditions including salinities ranging between 1 and 62 (Chessman & Williams, 1975), temperatures between 11 and 29° C (Boubee et al , 1991; Chapman et al , 2006) and dissolved oxygen levels of 1 mg l −1 for relatively short periods of time (Dean & Richardson, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Aspects of the biology of Galaxias maculatus

Laurenson

French

Jones

et al. 2012

Journal of Fish Biology

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The biology of three landlocked and a riverine population of Galaxias maculatus were examined in western Victoria, Australia. All systems supported reproducing populations of these fish, including Lake Corangamite which had salinities that on occasion reached 82. Spawning sites in Lake Corangamite were located in adjacent tributaries and not in the main lake as was the case for other populations. The smallest fish were found in the fresh water Lake Purrumbete and the largest in the hypersaline Lake Corangamite. The size at which 50% of the population attained sexual maturity varied across sites, with fish maturing at a smaller size in Lake Purrumbete, followed by the Merri River, Lake Bullen Merri and Lake Corangamite. Condition was higher in the freshwater Lake Purrumbete and there was no relationship between condition and temperature, conductivity, turbidity and pH; but there was a positive relationship between condition and dissolved oxygen. Length frequency analysis suggested that the majority of fishes live for a year.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aspects of the biology of Galaxias maculatus

Laurenson

French

Jones

et al. 2012

Journal of Fish Biology

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“…The method facilitates the determination of the effects of gradual temperature changes and allows ontogenetic shifts in temperature preferences to be calculated. Boubee et al (1991) showed experimentally that the final preferred temperature of Galaxias maculates resident in New Zealand is about 20 o C and temperatures above 29.5 o C were totally avoided.…”

Section: Behavioural Preferences and Avoidancementioning

confidence: 99%

“…Gerald and Spezzano, 2005). Thermal gradient tanks have been used to determine temperature preferences (Cherry and Cairns, 1982;Boubee et al, 1991;Richardson et al, 1994). This technique involves the establishment of a temperature gradient that is then used to evaluate the temperatures preferred or avoided by various organisms.…”

Section: Behavioural Preferences and Avoidancementioning

confidence: 99%

Water temperature and riverine ecosystems: An overview of knowledge and approaches for assessing biotic responses, with special reference to South Africa

Dallas

2018

WSA

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Available information pertaining to water temperature in riverine ecosystems is examined and consolidated into an overview that describes the spatial and temporal variation in water temperature, the importance of water temperature in lotic ecosystems, the measurement and modelling of water temperature, anthropogenic factors that modify water temperature, the effects of temperature changes on the physical and chemical characteristics of water; and on aquatic organisms and ecosystems. Methods for assessing the effects of temperature changes on aquatic organisms are discussed and current water temperature guidelines for the protection of aquatic ecosystems are outlined. This paper highlights the complexity of water temperature in the aquatic environment and the importance of understanding the spatio-temporal variability in water temperature and the variable responses of aquatic organisms to thermal stress. Anthropogenic modifiers of the thermal regime, which include heated discharges, flow modifications, riparian vegetation removal and global climate change; present ongoing threats to aquatic ecosystems. Whilst Northern Hemisphere information on water temperature is plentiful, this overview has identified the huge gap that exists in temperature-related data in South Africa. Without baseline data on water temperature and the thermal requirements of aquatic organisms, it is extremely difficult to adequately manage aquatic ecosystems. The risk of increasingly harsh conditions caused by greater water demands and climate change accentuates the need for a greater understanding of the thermal conditions in aquatic ecosystems in South Africa and the requirements and triggers of the associated aquatic biota. Future directions for thermal research are described.

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“…It is unclear from the available data whether there are different responses to temperature shown by the minnows from the two areas, however one might suspect a priori that gravid females or juveniles may be particularly susceptible to thermal stress. Thermal avoidance may also reflect scope for exercising choice: Galaxias maculatus avoids a plume of warm water discharged from a power station (Boubee et al 1991). The predation rate on flying ants and adult Diptera, i.e.…”

Section: ±5 150 ± 149mentioning

confidence: 99%

Biology of the Black-stripe minnow Galaxiella nigrostriata, (Galaxiidae) in an acidic, black-water lake in Melaleuca Park near Perth, Western Australia

Smith¹,

Knott²,

Jasinska³

2002

Rec West Aust Mus

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Individuals of GalaxieIla nigrostriata (Shipway) from acidic, temporary, black-water wetland designated EPP 173 at Melaleuca Park, Ellen Brook, Western Australia, are compared with members from the main area of distribution of the species some 350+ km further south in Western Australia. They were found to be similar to the southern populations in size frequency distribution and habitat. Adult fish from EPP 173 were first sampled, and breed, one month later than those from southern sites. Diets of all populations were similar, comprising predominantly microcrustaceans, dipterans and rotifers; however, prey items at the water surface were consumed less commonly by the northern specimens. G. nigrostriata was found to be sensitive to high water temperatures. Laboratory trials showed that the fish cannot tolerate, for more than a few seconds, temperatures >26°C but preferred a temperature of 14,SOC. The survival of the G. nigrostriata population in EPP 173 is related to the strong thermal stratification which develops on hot days, with the surface water temperature typically reaching values >26°C but overlying cooler bottom water around 15°C which provides a cool water refuge for the resident fish population. The northern outlier population in EPP 173 occurs in the path of the urban expansion of Perth and, since it has high intrinsic conservation value, its management for conservation is paramount.

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Thermal avoidance in inanga,Galaxias maculatus(Jenyns), from the Waikato River, New Zealand

Cited by 11 publications

References 6 publications

Aspects of the biology of Galaxias maculatus

Aspects of the biology of Galaxias maculatus

Water temperature and riverine ecosystems: An overview of knowledge and approaches for assessing biotic responses, with special reference to South Africa

Biology of the Black-stripe minnow Galaxiella nigrostriata, (Galaxiidae) in an acidic, black-water lake in Melaleuca Park near Perth, Western Australia

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