&lt;htm&gt;Estrutura populacional de &lt;i&gt;Mimagoniates microlepis &lt;/i&gt;(Steindachner, 1876) (Characidae, Glandulocaudinae) em um riacho de Floresta Atlântica, Paraná (Brasil)&lt;/htm&gt;

Braga, Marcelo Rennó; Vitule, J. R. S.; Aranha, José Marcelo Rocha

doi:10.5380/abpr.v36i0.9804

Cited by 6 publications

(6 citation statements)

References 18 publications

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“…It was found that larger individuals were abundant in the upstream sections, and smaller juveniles were abundant in the downstream section (MAZZONI et al 2004). This same distribution pattern was reported for Mimagoniates microlepis (Steindachner, 1877) in a coastal stream in the state of Paraná, Brazil (BRAGA et al 2007).…”

Section: Discussionsupporting

confidence: 57%

Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil

Lourenço

Fernandes²,

Súarez³

2012

Zoologia (Curitiba)

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The present study has assessed spatial and temporal variations in the length structure of Hemigrammus marginatus Ellis, 1911 and estimated growth parameters for the species. Sampling was carried out in five streams in the Vitória and Piravevê sub-basins of the Ivinhema River from January to December 2002. A total of 933 specimens of H. marginatus were caught (97 in the Vitória sub-basin and 836 in the Piravevê sub-basin). Mean length of the individuals caught in the Piravevê sub-basin was shorter (21.58 mm, SD = 4.67) than that of individuals caught in the Vitória sub-basin (29.24 mm, SD = 4.42). Analysis of condition factor calculated from the weight/length relationship revealed that the values were constant both spatially (between sub-basins) and temporally (throughout the year). In the Piravevê sub-basin, the theoretical maximal length estimated for this species was 37.26 mm, with natural mortality rate of 1.22 year¹, growth rate (k) of 0.66 year-1, and growth performance index (w) of 3.80 and 4.25 years of longevity. The input of new individuals in the population occurs twice per year, with greater recruitment at the peak of the rainy season (May) and the peak of the dry season (August)

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Section: Discussionsupporting

confidence: 57%

Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil

Lourenço

Fernandes²,

Súarez³

2012

Zoologia (Curitiba)

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“…This pattern was observed for Hypostomus punctatus, Astyanax janeiroensis, Deuterodon langei, Geophagus brasiliensis, and Mimagoniates microlepis (Menezes & Caramaschi, 2000;Mazzoni & Lobón-Cerviá, 2000;Braga et al, 2007;Vitule et al, 2008a). This is probably a pattern derived mainly by ecological factors with low phylogenetic interference.…”

Section: Ontogenetic Migrationmentioning

confidence: 56%

Fishes of the Atlantic Rain Forest Streams: Ecological Patterns and Conservation

Abilhôa¹,

Braga²,

Bornatowski³

et al. 2011

Changing Diversity in Changing Environment

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“…A population of M . microlepis from a tributary of Rio Paranaguá, PR, Brazil, not only showed a well‐defined reproductive period from winter to spring, but also showed mature males in 7 months and mature females in 9 months (Braga et al ., , , ) indicating a long reproductive season. In both cases, the long reproductive period associated with a reproductive peak in the colder months distinguishes the reproductive strategy of this species compared with most Characiformes (Azevedo, ).…”

Section: Discussionmentioning

confidence: 99%

Reproductive strategies in two inseminating species of Glandulocaudini, Mimagoniates microlepis and Mimagoniates rheocharis (Characiformes: Characidae: Stevardiinae)

Azevedo

Fialho

Malabarba

2016

Journal of Fish Biology

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The reproductive biology of two inseminating Glandulocaudini species, Mimagoniates microlepis and Mimagoniates rheocharis, was investigated and compared with reproductive patterns described for other inseminating and non-inseminating characids, hypothesizing the evolutionary history of these reproductive traits. The long reproductive period, with higher activity in colder months, distinguishes the reproductive strategy of these species when compared with most characiforms. The M. rheocharis population was structured in two groups of males throughout the year, mature males with high gonado-somatic index (IG = 2·0 and 4·4) and immature and maturing males with low IG values (0·0 and 1·2). Mimagoniates rheocharis and M. microlepis showed the lowest absolute mean fecundities known for characids, indicating that inseminating species allocate less energy to oocyte production and reinforcing the hypothesis that insemination has an adaptive advantage, which provides a higher chance of fertilization.

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<htm>Estrutura populacional de <i>Mimagoniates microlepis </i>(Steindachner, 1876) (Characidae, Glandulocaudinae) em um riacho de Floresta Atlântica, Paraná (Brasil)</htm>

Abstract: Estrutura populacional de Mimagoniates microlepis (Steindachner, 1876) (Characidae, Glandulocaudinae) em um riacho de Floresta Atlântica, Paraná (Brasil)

Cited by 6 publications

References 18 publications

Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil

Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil

Fishes of the Atlantic Rain Forest Streams: Ecological Patterns and Conservation

Reproductive strategies in two inseminating species of Glandulocaudini, Mimagoniates microlepis and Mimagoniates rheocharis (Characiformes: Characidae: Stevardiinae)

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