Distribuição sazonal das larvas de Mylossoma aureum e Μ. duriventre (osteichthyes: serrasalmidae) na Costa do Catalão, Rio Amazonas, Amazonas, Brasil

Abstract

RESUMO -A distribuição sazonal das larvas de Mylossoma aureum e M. duriventre (Osteichthyes: Serrasalmidae), foi estudada na costa do Catalão, rio Amazonas durante três anos. As larvas de ambas espécies de Mylossoma foram mais abundantes na estação marginal do que na estação localizada no centro do rio. O período de ocorrência das duas espécies foi semelhante e durou em média 109 dias, variando de novembro-janeiro a abril-maio. A variação na abundância de larvas durante o período de ocorrência não se relacionou com a luminosidade da lua, nem com a pluviosidade local. Porém, a enchente apresentou efeito na variação da densidade de Palavras-chave: Amazônia, peixe, larva, distribuição sazonal, Characiformes.Seazonal Larval Distribution of the Mylossoma aureum and M. duriventre (Osteichthyes: Serrasalmidae) on the Coast of Catalão in the Amazon River, Amazonas State, Brazil ABSTRACT -The seazonal variation of larval distribution of Mylossoma aureum and M. duriventre (Osteichthyes: Serrasalmidae), were studied in the coast of Catalão, Amazon River during three years. Only the first feeding stage larvae were found drifting on the river. Larvae were more abundant near the banks than in the middle river channel. The average larval drift lasted 109 days, varying from November-January to April-May. The variation of larval abundance was not related to the rain or the moon phases, but only to an increase of water level for M. aureum in year of 1994-1995.

Distribution of economically important fish larvae (Characiformes, Prochilodontidae) in the Central Amazonia, Brazil

“…The high densities of larvae in areas at the mouths of lake channels and barrancos are consistent with the results of Oliveira and Araújo‐Lima () and Oliveira (). These authors also found a higher quantity of Characiformes larvae by the shores, and a lower density in the central channel of the Amazon River.…”

“…Such temporal patterns need to be understood to provide reliable evaluation of fish status and accurate basis for planning, and ensure healthy, well‐managed fisheries (Booth, ; Shuai et al., ). However, in the Amazon, studies of ecology and distribution the fish larvae remain scarce; exceptions are the studies of Oliveira and Araújo‐Lima (), Oliveira (), Araújo‐Lima, Silva, Petry, Oliveira and Moura (), Lima and Araújo‐Lima (), Oliveira and Ferreira (), Mounic‐Silva and Leite (), Ponte et al. (), Zacardi and Ponte () and Chaves et al.…”

“…However, in the Amazon, studies of ecology and distribution the fish larvae remain scarce; exceptions are the studies of Oliveira and Araújo- Lima (1998), Oliveira (2000), Araújo-Lima, Silva, Petry, Oliveira and Moura (2001), Lima and Araújo-Lima (2004), Oliveira and Ferreira (2008), Mounic-Silva and Leite (2013), Ponte et al (2016), Zacardi and Ponte (2016) and Chaves et al (2017) focusing on species of greater economic interest. This paper aims to contribute to filling this gap through the study of the spatial and temporal variation patterns of the larvae of S. taeniurus, S. insignis and P. nigricans and to establish their relationship to key environmental variables in the middle Solimões and lower Japurá rivers' area.…”

Spawning areas, dispersion and microhabitats of fish larvae in the Anavilhanas Ecological Station, rio Negro, Amazonas State, Brazil

“…were more abundant in the ravines, which are areas of erosion, similar to that described for the fish larvae of the Missouri River in microhabitats with these characteristics (Hergenrader et al, 1982), and for Mylossoma aureum and M. duriventre in the margins of the Amazon River Oliveira, 2000). This pattern probably gives advantages to the species of Plagioscion that would be more easily transported to the nursery areas, such as lake channels and lakes.…”

Ocorrência de ovos e larvas de Characiformes migradores no Rio Negro, Amazonas, Brasil

“…Na Amazônia, todos os trabalhos realizados sobre distribuição de ovos e larvas de Characiformes foram desenvolvidos nos rios Solimões e Amazonas (Araújo-Lima, 1984;Petry, 1989;Oliveira, 1996;Araújo-Lima & Oliveira. 1998;Oliveira & Araújo-Lima, 1998;Oliveira, 2000) que são rios de águas brancas.…”