Fish, flows and flood plains: links between freshwater fishes and their environment in the Murray-Darling River system, Australia

Humphries, Paul; King, Alison J.; Koehn, John D.

doi:10.1007/978-94-017-3678-7_10

Cited by 189 publications

(379 citation statements)

References 74 publications

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“…This result indicates that the larvae in more advanced stages tend to prefer calmer environments that, according to Houde (2002) and Werner (2002), offer better conditions for their development. Several authors (Humphries et al, 1999;King et al, 2003;King, 2004) maintain that in regions of rivers that do not present a floodplain, the main channel provides lateral habitats along the banks that are adequate for larvae development.…”

Section: Discussionmentioning

confidence: 99%

“…This model has been used for native fish in floodplain rivers in several locations (Castro et al, 2002;King, 2004). Several studies (Humphries et al, 1999;Galat & Zweimüller, 2001;King et al, 2003) have questioned the generalization of this model because the main river channel, in its diverse structural mosaic, can also offer favorable conditions for the development of larvae through the lateral habitats located along the banks, which are characterized by a low flow speed and the subsidence of thin particles. In addition, Humphries et al (2002) mention the possibility of several species being able to spawn and recruit in the main channel of the river during the low water period, when the access to floodplain environments is unavailable.…”

Section: Introductionmentioning

confidence: 99%

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Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains

2014

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This study aimed to evaluate the importance of two environments situated in the main channel of the Peixe River (a tributary of the upper Uruguay River) on fish reproduction and initial growth. Ichthyoplankton, macrozooplankton, and zoobenthos collections were taken on a monthly basis from October 2011 to March 2012, sampling a rapids and a pool environment. The instrument used for the capture of the ichthyoplankton in both environments was a light trap. In total, 795 eggs and 274 larvae were captured. The species that presented higher abundance and occurrence frequency out of the total captured in both environments were Leporinus obtusidens, Bryconamericus iheringii, and Bryconamericus stramineus. The evaluation of the feeding activity reveals a major repletion degree of the larvae in more advanced stages in the pool. The pool environment presented a higher abundance of larvae in more advanced development stages. We conclude that the channel of the Peixe River is important for the reproduction and initial growth of fish and that each river environment seems to fulfill a different role in the life cycle of the ichthyoplankton community.Este trabalho avaliou a importância de dois ambientes situados no canal principal do rio do Peixe (afluente do alto rio Uruguai) na reprodução e crescimento inicial dos peixes. As coletas de ictioplâncton, macrozooplâncton e zoobentos foram realizadas mensalmente no período de outubro de 2011 a março de 2012, amostrando um ambiente de corredeira e um ambiente de poço. O instrumento utilizado para a captura do ictioplâncton nos dois ambientes foi a armadilha luminosa. No total, foram capturados 795 ovos e 274 larvas. As espécies que apresentaram maior abundância e frequência de ocorrência do total capturado nos dois ambientes foram Leporinus obtusidens, Bryconamericus iheringii e Bryconamericus stramineus. A avaliação da atividade alimentar revela um maior grau de repleção das larvas em estágios mais avançados no ambiente de poço. O ambiente de poço apresentou uma maior abundância de larvas nos estágios mais avançados de desenvolvimento. Conclui-se que o canal do rio do Peixe é importante para a reprodução e crescimento inicial de peixes e que cada ambiente do rio parece cumprir um papel diferente no ciclo de vida da comunidade ictioplanctônica.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains

2014

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“…In riverine systems, the natural flow regime can play a critical role in reproduction and recruitment of aquatic and terrestrial organisms (Humphries et al, 1999;Nunn et al, 2007), and ultimately in structuring community assemblages and functioning as an overarching ecosystem driver (Bunn and Arthington, 2002;Lytle and Poff, 2004). Human needs for freshwater however have made substantial impacts on hydrology and geomorphology of many riverine systems worldwide (Nilsson and Berggren, 2000).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variation in flow-dependent recruitment of long-lived riverine fish: Model development and evaluation

Goto¹,

Hamel²,

Hammen³

et al. 2015

Ecological Modelling

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“…Humphries et al (2002, Figure 5) displayed 'occurrence bars' for larvae of Hypseleotris spp., sampled monthly in 1995-1999 in the highly regulated Campaspe River and in the mildly regulated Broken River (southern MDB). Whilst the extent of occurrence in the Campaspe River was limited to 1-2 months between November and January, the occurrence of larvae in the Broken River was up to 6-7 months in some years, ranging from late spring (November) to early autumn (April), and this duration was third only to that of flathead gudgeon Philypnodon grandiceps and Australian smelt Retropinna semoni, two Mode 3a species with longer spawning seasons (Humphries et al, 1999). In a previous paper, based on the first three years of the above data set (i.e.…”

Section: Spawningmentioning

confidence: 99%

“…Yet, taxonomical difficulties in species identification combined with extensive hybridization (Bertozzi et al, 2000;Schmidt et al, 2011) have resulted in the MDB carp gudgeons to be referred to either as western carp gudgeon (in the broad sense) or as a species complex Hypseleotris spp., otherwise known as 'carp gudgeon group' (Humphries et al, 1999;King et al, 2003;Vilizzi, 2012). Across the MDB, Hypseleotris spp.…”

Section: Introductionmentioning

confidence: 99%

Improving the ecological understanding of species complexes: the case of piscivory and protracted spawning in the carp gudgeon group Hypseleotris spp. (Eleotridae, Teleostei)

Vilizzi¹,

Tarkan²

2016

Turk J Zool

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Species complexes are a common occurrence in freshwater fish assemblages and may often pose a challenge to the understanding of their ecology. A typical case is the 'cryptic' carp gudgeon group Hypseleotris spp. in southeastern Australia, which is thought to comprise four closely related species occurring sympatrically within the Murray-Darling Basin (MDB), where flow delivery scenarios have been proposed for the management and conservation of the native fish faunas. The objective of this study was to provide a deeper insight into the occurrence of piscivory and protracted spawning seasons in Hypseleotris spp. based on six years of sampling, and to cast the findings within the broader context of interrelationships between species complexes and their ecology. It is argued that what has been so far referred to as conspecific predation (cannibalism) in Hypseleotris spp. could be explained alternatively as 'congeneric' predation, or even as a combination of both. Furthermore, the presence of larvae all year round should be accounted for when assessing the effectiveness of taxon-specific water allocation programs. Better matching of taxonomy with ecology is, therefore, essential for the successful management and conservation of species complexes, and further insights may be provided through the assessment of altricial/precocial forms.

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Fish, flows and flood plains: links between freshwater fishes and their environment in the Murray-Darling River system, Australia

Cited by 189 publications

References 74 publications

Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains

Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains

Spatiotemporal variation in flow-dependent recruitment of long-lived riverine fish: Model development and evaluation

Improving the ecological understanding of species complexes: the case of piscivory and protracted spawning in the carp gudgeon group Hypseleotris spp. (Eleotridae, Teleostei)

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