Fish movement in an Atlantic Forest stream

Mazzoni, Rosana; Pinto, Míriam Plaza; Iglesias-Rios, Ricardo; Costa, Raquel

doi:10.1590/1982-0224-20170065

Cited by 10 publications

(10 citation statements)

References 70 publications

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“…Migration can be motivated by a search for places with better conditions (Schlosser, ; Welcome, ). Upstream movements may be important for the reproduction and population maintenance of some species (Mazzoni & Iglesias‐Rios, ; Mazzoni, Pinto, Iglesias‐Rios, & Costa, ; Mazzoni, Schubart, & Iglesias‐Rios, ), say by avoiding predation. Reciprocal migration is believed to reflect the interplay of temporal variation in local conditions and spatial heterogeneity among sites (Holt & Fryxell, ).…”

Section: Discussionmentioning

confidence: 99%

Environmental and spatial effects on coastal stream fishes in the Atlantic rain forest

et al. 2019

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Contemporary and historical factors influence assemblage structure. The environmental and spatial influences acting on fish organization of rain forest coastal streams in the Atlantic rain forest of Brazil were examined. Fish (and functional traits such as morphology, diet, velocity preference, body size), environmental variables (pH, water conductivity, dissolved oxygen, temperature, stream width, flow, depth, substrate), and altitude were measured from 59 stream reaches. Asymmetric eigenvector maps were used to model the spatial structure considering direction of fish movements. Elevation played an important role-fish abundance, biomass, and richness all decrease with increasing elevation. Fish communities are influenced by both environmental and spatial factors, but downstream movements were shown to be more important in explaining the observed spatial variation than were bidirectional and upstream movements. Spatial factors, as well as environmental variables influenced by the spatial structure, explained most of the variation in fish assemblages. The strong spatial structuring is probably attributable to asymmetric dispersal limitation along the altitudinal profile: Dispersal is likely to be more limiting moving upstream than downstream. These fish assemblages reflect scale-dependent processes: At the stream-reach scale, fish respond to local environmental filters (habitat structure, water chemistry, and food supply), which are in turn influenced by a larger scale, namely the altitudinal gradient expected in steep coastal mountains. Thus, environmental drivers are not independent of spatial factors, and the effects of local factors can be confounded across the altitudinal gradient. These results may have implications for conservation, because downstream reaches are often neglected in management and conservation plans.Abstract in Portuguese is available with online material. K E Y W O R D Saltitude, asymmetric eigenvector maps, dispersal limitation, environmental filtering, fish metacommunities, fish movement, tropical streams conservation, variation partitioning

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Section: Discussionmentioning

confidence: 99%

Environmental and spatial effects on coastal stream fishes in the Atlantic rain forest

et al. 2019

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“…Thus, not only the definition of patch but also that of its neighbourhood are critical for understanding metapopulation dynamics.Species-specific scale dependency on neighbourhood occupancy probably reflects species differences in movement pattern.A recent study on the movement capacity of Neotropical stream fishes(Mazzoni, Pinto, Iglesias-Rios, & Costa, 2018) showed that most individuals of Pimelodella lateristriga were residents. We found that the occupancy dynamics of P. gracilis respond to the occupancy state of sites within150 m, whereas L. friderici is sensitive to occupancy of sites within 50 m; see Bergerot, Hugueny, & Belliard, 2013 for a similar conclusion.…”

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confidence: 99%

Scale‐dependent effects of isolation on seasonal patch colonisation by two Neotropical freshwater fishes

Penha

Hakamada

Hines

et al. 2018

Ecology of Freshwater Fish

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The role that space plays in the processes underlying ecological patterns has been recently acknowledged in the ecological literature (e.g., Hanski, 1999;Holyoak, Leibold, & Holt, 2005). This results from better understanding of how dispersal influences population, community and ecosystem structure and dynamics.A group of populations linked by organisms' dispersal is referred to as a metapopulation, whereas a set of communities connected by dispersal is a metacommunity. Generally, metapopulation and metacommunity theories assume that extinction probability is a negative function of patch size while colonisation probability is inversely related to patch isolation. Consequently, patch area and distance between patches should affect both metapopulation AbstractThe metapopulation paradigm has been central to improve the conservation and management of natural populations. However, despite the large number of studies on metapopulation dynamics, the overall support for the relationships on which the paradigm is based has not been strong. Here, we studied the occupancy dynamics of two Neotropical fishes (i.e., Pimelodella gracilis and Leporinus friderici) to investigate two fundamental premises of the metapopulation paradigm, that is, that isolation and area/habitat quality affect colonisation and extinction probabilities in predictable ways. In order to do this, we used a modification of occupancy models that allows modelling the probability of a site's occupancy as a function of the occupancy of its neighbourhood. We found a weak positive effect of neighbourhood occupancy on P. gracilis colonisation, which is consistent with the propagule rain metapopulation, that is, colonists arriving from outside the studied system. However, we found a strong negative neighbourhood effect on extinction probability, suggesting that declining populations from stream sections are rescued from extinction by neighbouring patches. In contrast, the effect of neighbourhood occupancy on the metapopulation dynamics of L. friderici was in the opposite direction, affecting positively colonisation but not affecting extinction rates, which is consistent with the classical metapopulation model. In addition, the occupancy dynamics of both species were affected by water velocity. To our knowledge, this is the first study to link directly dispersal to local population dynamics in Neotropical fishes, and one of the few studies doing inferences on spatial population dynamics based on direct estimates of neighbourhood occupancy. K E Y W O R D Sautologistic model, connectivity, metapopulation, movement, neighbourhood occupancy, occupancy modelling | 275 PENHA Et Al.

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“…As marcações foram feitas com marcadores de Transponder Integrado Passivo (PIT-tags) e o monitoramento dos indivíduos por antenas de rádio telemetria. Apontaram, como perspectivas, que certas pistas ambientais, como a fase lunar e a vazão do riacho, podem ser determinantes para taxas mais altas de movimento de alguns Loricariidae: Siluriformes; (4) Mazzoni et al (2018) ampliaram o tempo de monitoramento dos peixes (Mazzoni & Iglesias, 2012) e obtiveram relação positiva marginal entre o tamanho do peixe e sua capacidade de movimento. Também corrigiram a classificação do tipo de movimento de algumas espécies do estudo de 2012; (5) Espírito-Santo et al (2018) avaliaram, por experimentos controlados, o papel da interação social na decisão do movimento entre poças temporárias (i.e.…”

Section: Estado Da Arteunclassified

“…A maioria desses estudos levantados na literatura foi baseada em variações do método de marcação e recaptura, utilizando marcadores a base de elastômeros (e.g. Mazzoni & Iglesias-Rios 2012, Espírito-Santo et al 2016, etiquetas alfanuméricas (Mazzoni et al 2018), rádio telemetria (Celestino et al 2017) e marcações individuais, tais como os padrões de campos elétricos (Henninger et al 2020).…”

Section: Estado Da Arteunclassified

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Ecologia Do Movimento Em Peixes De Riacho

Mazzoni

Barros

2021

Oecol. Aust.

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Movement is a key factor in spatial dynamics and the size of fish populations. It is one of the main mechanisms for maintaining viable populations and also accounts for the dispersion, colonization and performance of individuals life stages. The currently refuted restricted movement paradigm predicted that freshwater fish would not move. However, studies show that in addition to moving on a short and large scale, the movement patterns of these fish have, in general, reproductive, food, search for shelter, colonization or exploitation motivation. Studies on the movement of Neotropical fish are concentrated on the large migrators from large basins, such as Amazonas and Paraná. For streams, where small species predominate, little is known about the movement and its motivations. In this review, we show that studies on the movement of fish in neotropical streams are still very scarce. We propose a protocol for obtaining data and analytical tools for determining fish movement in streams. We highlight three tools for that: (i) analysis of the spatio-temporal structure of the size of the fish, (ii) mark-recapture experiments and (iii) molecular analyzes. We conclude that, given the limitation of each analysis, the use of the three tools must be carried out jointly.

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Fish movement in an Atlantic Forest stream

Cited by 10 publications

References 70 publications

Environmental and spatial effects on coastal stream fishes in the Atlantic rain forest

Environmental and spatial effects on coastal stream fishes in the Atlantic rain forest

Scale‐dependent effects of isolation on seasonal patch colonisation by two Neotropical freshwater fishes

Ecologia Do Movimento Em Peixes De Riacho

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