Reprodução de Hemiancistrus punctulatus Cardoso &amp; Malabarba, 1999 (Siluriformes: Loricariidae) no sistema da laguna dos Patos: uma espécie de ambiente lótico frente às alterações provocadas por represamentos

Hirschmann, Alice; Fialho, Clarice Bernhardt; Grillo, Hamilton César Zanardi

doi:10.4013/nbc.2011.63.10

Cited by 5 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cichlidae (G. brasiliensis) and Loricariidae (H. punctatus and Rineloricaria sp.) are territorial species, presenting parental care and nesting sites, so these reproductive traits constrain their movement (Marcucci et al, 2005;Hirschmann et al, 2011) and explain our findings during recapture experiments.…”

Section: Discussionmentioning

confidence: 52%

Fish movement in an Atlantic Forest stream

et al. 2018

View full text Add to dashboard Cite

Given the importance of fish movement to the dynamics and maintenance of stream dwelling fish communities from the Atlantic Forest, we analysed patterns of fish movement in a coastal stream from Southeastern Brazil, using mark-recapture technique. Displacement distance of each species were presented and discussed considering seasonal (rainy and dry) and body size patterns. We marked 10 species along the stream and recaptured 440 (34.6%) of the 1,270 marked fishes. The species with significant number of upstream moving individuals were Astyanax janeiroensis, Characidium interruptum, Astyanax hastatus, Parotocinclus maculicauda and Awaous tajasica. Only Pimelodella lateristriga presented significant differences between resident and moving individuals. Characidium interruptum and A. tajasica demonstrated greater downstream and upstream movement, respectively, moving up to 2,100 m. Even after controlling for species identity we found no significant correlation between fish length and individual displacement distance. Fishes moved longer distances during the rainy season, in accordance to the breeding season. Patterns of fish movement were in agreement to life-history traits of many of the studied species and can be reflecting specific behaviour and morphologies.Keywords: Coastal stream, Migration, Reproduction, Stream dwelling fish.Considerando-se a importância do movimento de peixes para a dinâmica e manutenção das comunidades de peixes de riachos da mata Atlântica, nós analisamos os padrões de movimento de peixes de um riacho costeiro do sudeste do Brasil, usando a técnica da marcação e recaptura. Avaliamos a distância do deslocamento de cada espécie e também se os padrões de movimento apresentavam alguma relação com a estação do ano (chuva e seca) e o tamanho do corpo. Marcamos 10 espécies ao longo do riacho e recapturamos 400 (34.6%) dos 1.270 peixes marcados. As espécies com número significativo de indivíduos se movendo para cima foram Astyanax janeiroensis, Characidium interruptum, Astyanax hastatus, Parotocinclus maculicauda e Awaous tajasica. Apenas Pimelodella lateristriga apresentou diferenças significativas entre os indivíduos residentes e em movimento. Characidium interruptum e A. tajasica foram as espécies com maior movimento tanto para baixo como para cima, respectivamente, se movendo até mais de 2.100 m. Mesmo após controlar a identidade das espécies, não registramos correlação significativa entre o comprimento e a distância individual do deslocamento. Registramos maiores densidades de peixes se movendo para montante durante a época de chuvas, em coincidência com a estação reprodutiva. Os padrões de movimento registrados estão de acordo com os componentes da história de vida de várias das espécies estudadas, e podem estar refletindo componentes morfológicos e comportamentais específicos.Palavras-chave: Migração, Peixes de riacho, Riacho costeiro, Reprodução.

show abstract

Section: Discussionmentioning

confidence: 52%

Fish movement in an Atlantic Forest stream

et al. 2018

View full text Add to dashboard Cite

show abstract

“…isbrueckeri (October to January) is similar to that of other loricariids from tropical latitudes, although armored catfishes encompass a wide diversity of forms and behaviors (Burgess, 1989;Agostinho et al, 1995;Suzuki et al, 2000). Present knowledge about loricariid life-history indicates that reproduction takes place in spring and summer (Agostinho et al,1987(Agostinho et al, , 1991Mazzoni, Caramaschi, 1995, 1997a, 1997bRamos, Konrad, 1998Hirschmann et al, 2011;Gomes et al, 2015), as is also the case for many other Neotropical groups (Lampert et al, 2004;Dala-Corte, Azevedo, 2010). However, in contrast to species from tropical latitudes and floodplain rivers, we observed that GSI values of Hem.…”

Section: Discussionmentioning

confidence: 94%

Reproduction of two loricariid species in a confined river and implications for environmental impacts of dams

Fries

Rosa

Silva³

et al. 2018

Neotrop. ichthyol.

View full text Add to dashboard Cite

Fish reproduction in floodplain rivers is often linked to flow regime and with the inundation of floodplain habitats. However, in confined rivers, where floodplains are absent, the relation between reproduction and flow can in comparison be expected to be distinct. In this study, we describe the reproductive life-history of Hemiancistrus fuliginosus and Hypostomus isbrueckeri in a confined river and discuss its differences relative to floodplain loricariids and also the implications for effects of dam construction and flow regulation. We found the reproductive peak of both species occurred during lowering waters, just after maximum river flow, in contrast to floodplain species that tend to spawn during rising waters. The studied species presented attributes of equilibrium life-history strategy, which are related to predictable river flow variation. Because both species spawned during low river flow, which is historically predictable in summer, we suggest that their reproduction may be severely disrupted, depending on how flow regime is affected by dam operation. These results have implications for assessing and mitigating the impacts of river damming on fish populations in confined rivers, and we point to ecologically driven flow management and conservation of free-flowing rivers as mitigation and conservation alternatives.

show abstract