2010
DOI: 10.1590/s1679-62252010000200013
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Abstract: at 24 sampling sites. For analytical purposes, the sampling sites were grouped into upper, middle and lower areas. The upper area of the National Park had the highest egg density and should be considered the primary spawning area. The middle area should be considered a drift area, and the lower area likely functions as a growth and feeding habitat. Statistical analyses showed that the spawning was influenced by water temperature, pH, fluviometric level and rainfall, and that larval density was influenced by pH… Show more

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Cited by 29 publications
(34 citation statements)
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“…3 In regards to the spatial variation of spawning, the presence of mature females in all three sampled sections suggests that this event took place throughout the entire biotope. It should be stressed that Saraiva Lagoon is an important site for fish larvae survival (Gogola et al 2010), including L. platymetopon (Baumgartner et al 2008). This environment was regarded by Nakatani et al (2004) as a natural nursery, due to its high density of ichthyoplankton kept by the abundant aquatic vegetation in the margins, acting as a source of shelter and food.…”
Section: P T E Ro D O Ra S G Ra N U L O S U S Pa Ra U Ch E N I P T mentioning
confidence: 99%
“…3 In regards to the spatial variation of spawning, the presence of mature females in all three sampled sections suggests that this event took place throughout the entire biotope. It should be stressed that Saraiva Lagoon is an important site for fish larvae survival (Gogola et al 2010), including L. platymetopon (Baumgartner et al 2008). This environment was regarded by Nakatani et al (2004) as a natural nursery, due to its high density of ichthyoplankton kept by the abundant aquatic vegetation in the margins, acting as a source of shelter and food.…”
Section: P T E Ro D O Ra S G Ra N U L O S U S Pa Ra U Ch E N I P T mentioning
confidence: 99%
“…Larval distribution patterns often reflect adult fish distribution and reproductive traits (Doyle et al, 1993;Nonaka et al, 2000), and the abundance of adults can be inferred from the eggs and larval fish (Cao et al, 2007). Meanwhile, data on the relationships between larval fish and biotic or abiotic factors are crucial to understand the environmental requirements of reproduction (Gogola et al, 2013) and is also critical to explain the mechanisms determining the patterns of larval fish assemblages (Gogola et al, 2010). Furthermore, early life history stages play an important role in fish population dynamics and knowledge about the mechanisms underlying recruitment success during the early life history stages provides essential information to explain population dynamics (Kamler, 1992;Trippel & Chambers, 1997).…”
Section: Introductionmentioning
confidence: 99%
“…These tributaries, in addition to maintaining the reproduction events, have still contributed with the input of larvae to the downstream stretches. Numerous studies carried out in this basin Daga et al, 2009;Gogola et al, 2010;Reynalte-Tataje et al, 2011Da Silva et al, 2015;Silva et al, 2016) and in the basins of the rivers Uruguay (Reynalte-Tataje et al, 2008, 2012aHermes-Silva et al, 2009;Corrêa et al, 2011) and São Francisco (Sato et al, 2005;Weber et al, 2013;Normando et al, 2014;Nunes et al, 2015), as well as in other parts of the world (Bottcher et al, 2013;Webber et al, 2013;López-Casas et al, 2016), have argued for the importance of free-flowing tributaries upstream of regulated rivers as alternative migratory routes. Nevertheless, it is important to emphasize the need for an adequate distance between the spawning site and the complete early embryonic and larval development, preventing the drift of larvae to inappropriate places, such as reservoirs, where they can be preyed upon or settle to the substrate Olden, 2016).…”
Section: Discussionmentioning
confidence: 99%
“…main channel, tributaries and lagoon) that are used by species with different ecological requirements during their life cycle (Paiva, 1982;Junk et al, 1989). In particular, in the Upper Paraná River floodplain, although we have adopted a design with few samplings and only one equipment, the capture of eggs and larvae was considerable (592 eggs and 6,618 larvae) when compared, for example, to the study by Gogola et al (2010) developed exclusively during the reproductive period (October to March), in tributaries and lagoon of the Ilha Grande National Park, in which the authors found 8,029 eggs and 25,190 larvae. This result indicates that despite the fact that it is under several human impacts, the only dam-free stretch in the Upper Paraná River can still be considered an important breeding site for fish species, corroborating the results found by Baumgartner et al (2004), Bialetzki et al (2005), Gogola et al (2010Gogola et al ( , 2013, Reynalte-Tataje et al (2011, Barzotto et al (2015) and Silva et al (2016), which sampled some of the stations here evaluated, with most of the samples performed during the reproductive period.…”
Section: Discussionmentioning
confidence: 99%
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