Effects of turbidity on the feeding ability of the juvenile migrant stage of six New Zealand freshwater fish species

Rowe, David K.; Dean, Tracie L.

doi:10.1080/00288330.1998.9516803

Cited by 95 publications

(97 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, this should not be taken to mean that their abundance will be maintained in turbid rivers. Increased siltation of rivers may reduce food supplies and/or spawning sites and reduce abundance even though turbidity does not affect feeding (Rowe & Dean 1998). A high proportion (75%) of the larger (>80 mm long) smelt were not feeding and we noted that 67% of these fish contained either ripe eggs or milt.…”

Section: Discussionmentioning

confidence: 80%

“…Indeed, Rowe et al (2000) found that adult smelt and inanga were less common in turbid rivers than in clear rivers. Furthermore, correlations between turbidity level and the mean feeding rates for juvenile migratory smelt and inanga (i.e., r = -0.81 and-0.94) were both negative and higher than for other native fish species (Rowe & Dean 1998). These data suggest that smelt and inanga may be the next most sensitive native species to be affected by elevated turbidity levels in rivers.…”

Section: Introductionmentioning

confidence: 71%

“…The sediment used was from the bed of the Waihi Stream in the Waikato River catchment. Physical characteristics are provided by Boubee et al (1995), and the experimental protocol is described in Rowe & Dean (1998). Basically, fish were placed in the test tanks and acclimated overnight.…”

Section: Apparatus and Test Protocolmentioning

confidence: 99%

“…Laboratory tank studies on the juvenile migratory stage of the most common native fish species revealed that the banded kokopu {Galaxias fasciatus Gray) was the most sensitive species Rowe & Dean 1998). It avoided turbid waters much over 20-25 Nephelometric Turbidity Units (NTU) whereas other species tolerated higher levels.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of turbidity on the feeding ability of adult, riverine smelt (Retropinna retropinna)and inanga (Galaxias maculatus)

Rowe¹,

Smith

Williams

2002

New Zealand Journal of Marine and Freshwater Research

Self Cite

View full text Add to dashboard Cite

Laboratory tank experiments indicated that turbidity levels up to 160 Nephelometric Turbidity Units (NTU) did not reduce the feeding rates of adult smelt (Retropinna retropinna Richardson), or inanga (Galaxias maculatus Jenyns), on Daphnia sp. Mean feeding rates were higher for inanga than for smelt. However, the lower rates for smelt were related to the greater variation in individual feeding rates. Specifically, a few fish fed intensively while most did not. As the feeding ability of both species was unaffected by turbidity levels up to 160 NTU, they were less sensitive to turbidity than juvenile banded kokopu (Galaxias fasciatus Gray). Juvenile banded kokopu should therefore be used as the benchmark species for setting turbidity guidelines to protect native fish in rivers where this species is present. Both juvenile and adult rainbow trout (Oncorhynchus mykiss Richardson) appear to be more sensitive to turbidity than adult inanga and smelt, so should be used as benchmark species in all other waters.

show abstract

Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 71%

Section: Apparatus and Test Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of turbidity on the feeding ability of adult, riverine smelt (Retropinna retropinna)and inanga (Galaxias maculatus)

Rowe¹,

Smith

Williams

2002

New Zealand Journal of Marine and Freshwater Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…Increased turbidity is more disruptive to animals that detect prey from a long-distance in contrast to those that detect prey at short distances (Chesney 1989;Giske et al 1994;Rowe and Dean 1998). Therefore, turbidity affects animals differently depending on their visual ecology; and those animals that are not predominantly visual may be unaffected by changing turbidity levels, including many invertebrates, which dominate animal biomass in rivers.…”

Section: Turbidity Suspended Sediment and Water Claritymentioning

confidence: 99%

Animal perception in gravel-bed rivers: scales of sensing and environmental controls on sensory information

Johnson

Rice

2014

Can. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

Animals make decisions based on the sensory information that they obtain from the environment and other organisms within that environment. In a river, this information is transported, transmitted, masked, and filtered by fluvial factors and processes, such as relative roughness and turbulent flow. By interpreting the resultant signals, animals decide on the suitability of habitat and their reaction to other organisms. While a great deal is known about the sensory biology of animals, only limited attention has been paid to the environmental controls on the propagation of sensory information within rivers. Here, the potential transport mechanisms and masking processes of the sensory information used by animals in gravel-bed rivers are assessed by considering how the physical nature of sensory signals are affected by river hydromorphology. In addition, the physical processes that animals have the potential to directly perceive are discussed. Understanding the environmental phenomena that animals directly perceive will substantially improve understanding of what controls animal distributions, shifting emphasis from identifying correlations between biotic and abiotic factors to a better appreciation of causation, with benefits for successful management.

show abstract

The importance of ecosystem‐based management for conserving aquatic migratory pathways on tropical high islands: a case study from Fiji

Jenkins

Jupiter

Qauqau

et al. 2009

Aquatic Conservation

View full text Add to dashboard Cite

ABSTRACT1. Tropical, high islands of the Pacific have developed unique freshwater fish faunas that are currently threatened by a range of human activities. This paper documents distinct differences in life history strategies from fish communities found in streams of Fiji compared with fish assemblages in freshwater systems on larger continental land masses. While river systems of northern Australia and Papua New Guinea have a high proportion of freshwater residents, the Fiji fauna is dominated by amphidromous gobiids that migrate across a broad range of habitats throughout their life cycle.2. The number of amphidromous fish species and the number of all fish species in mid-reaches of Fiji rivers are significantly affected by loss of catchment forest cover and introductions of tilapia (Oreochromis spp.). On average, stream networks with established Oreochromis spp. populations have 11 fewer species of native fish than do intact systems. The fish that disappear are mostly eleotrid and gobiid taxa, which have important dietary and economic value.3. Based on the strong links between catchment land clearing, non-native species introductions and loss of migratory pathways for freshwater fish, spatial information was compiled on a national scale to identify priority areas for conservation in Fiji with intact connectivity between forests, hydrologic networks and coral reefs. Areas with high connectivity included remote, largely undeveloped regions of Vanua Levu (Kubulau, Wainunu, Dama, Udu Point, Natewa, Qelewara) and Taveuni, as well as smaller mapping units (Naikorokoro, Sawakasa) of Viti Levu with low density of roads and high relative amounts of mangroves and reefs.4. These priority areas for conservation can only be effectively protected and managed through cross-sectoral collaboration and ecosystem-based approaches.

show abstract

Effects of turbidity on the feeding ability of the juvenile migrant stage of six New Zealand freshwater fish species

Cited by 95 publications

References 16 publications

Effects of turbidity on the feeding ability of adult, riverine smelt (Retropinna retropinna)and inanga (Galaxias maculatus)

Effects of turbidity on the feeding ability of adult, riverine smelt (Retropinna retropinna)and inanga (Galaxias maculatus)

Animal perception in gravel-bed rivers: scales of sensing and environmental controls on sensory information

The importance of ecosystem‐based management for conserving aquatic migratory pathways on tropical high islands: a case study from Fiji

Contact Info

Product

Resources

About