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• W236431171 abstract "As areas rasas alem de oferecerem abundância de alimento, sao tidas como importantes areas derefugio para as populacoes de peixes. A descricao das assembleias de peixes dos ambientes estuarinos ede fundamental importância para medidas de gerenciamento. Tal descricao gera subsidios que fundamentammedidas de uso sustentado dos ambientes em questao, bem como para monitorar os efeitos dautilizacao destas areas. As coletas foram realizadas de abril de 2000 a marco de 2001, em duas areasentre mares na Baia de Antonina. Em cada area, foram realizados dois arrastos mensais, na baixa-mar dequadratura, com uma rede tipo picare. Foram coletados 17386 especimes correspondentes a 43 taxa e 22familias, sendo os Engraulidae os mais representativos. A especie Anchoa parva foi a mais abundante,representando 40,3% das capturas. Nas amostras, individuos de menor porte foram os que predominarame 80% das capturas eram de imaturos. A maioria dos taxa (29) apresentou baixa abundância eocorreu ocasionalmente. Entre os meses de coleta observaram-se diferencas significativas na media donumero de especies, estando as maiores medias no verao, porem nao houve diferenca significativa entreo numero de exemplares capturados ao longo do ano. Os indices de riqueza e diversidade apresentaramvalores maiores no verao e inicio de outono e a equitabilidade de Pielou apresentou diferencas significativasnos meses de menores medias. Em estudos sobre a fauna de peixes em planicies de mare da regiaoobservou-se dominância numerica de especies residentes e marinho-estuarinas. A presenca deTrachinotus falcatus em Antonina e o primeiro registro local da especie em areas com salinidade mediaabaixo de 10. A maioria das especies de ocorrencia esporadica e baixa abundância sao estuarino-dependentese sao as maiores responsaveis pela variacao temporal na diversidade especifica. Em contrapartida,diferencas sazonais no numero de peixes capturados estao mais associadas as especies numericamentedominantes. Palavras-chave: ictiofauna, planicie de mare, variacao espacial, variacao temporal. ABSTRACT The use of shallow environment by fishes in antonina bay, parana Shallow areas are important places for refugee to fish populations, besides offering abundance offood. The description of fish assemblages in estuarine environments is indispensable to makemanagements decisions. Such description gives subsidies that will be underlying measures for thesustained use of these areas, as well as monitor the effects of their utilization. Samples were taken fromApril 2000 to March of 2001 in two intertidal areas in the Bay of Antonina. Two monthly seines weremade in each area, at low ebb tide, with a “picare” seine net. 17.386 specimens corresponding to 43 taxaand 22 families were collected, with Engraulidae being the most representative family. The speciesAnchoa parva was the most abundant, representing 40,3% of the total capture. In the samples, smaller individuals prevailed, and 80% of the individuals were constituted of immature fishes. Most taxa (29)were present in low abundance (up to 1% of the total catch) and occurred occasionally (less than 6months of 12). Significant differences among sampling months were observed in the mean number ofspecies, with the largest averages occurring in summer. However, no significant difference were foundamong the number of individuals caught along the year. The richness and diversity indexes showedgreatest values in summer and beginning of autumn. Pielou’s equitability presented significant differencesamong months of smaller means. In local studies was observed the numeric dominance of resident andmarine-estuarine species. This paper presents the first register of Trachinotus falcatus in areas withmean salinity Key words: ichthyofauna, tidal flat, spatial variation, temporal variation." @default.
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• W236431171 date "2006-01-01" @default.
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• W236431171 title "Utilizacao de ambientes rasos por peixes na baia de Antonina, Parana" @default.
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