Community structure of the ichthyofauna associated with seagrass beds ( Halodule wrightii) in Formoso River estuary - Pernambuco, Brazil

Anais da Academia Brasileira de Ciências

Pedro H.c. Pereira¹  Beatrice P. Ferreira¹  Sérgio M. Rezende¹ 

[1] ,Universidade Federal de Pernambuco Departamento de Oceanografia

关键词: connectivity;    seagrass beds;    reef fishes;    diversity;    conectividade;    bancos de fanerógamas;    peixes recifais;    diversidade;   

DOI  :  10.1590/S0001-37652010000300009

来源: SciELO

【 摘 要 】

Seagrass beds are used by juvenile fishes in different ways, generally as nursery sites, shelter from predators, reducing competition and increasing availability of food resources, thus establishing a relationship of connectivity with other ecosystems. In the present study, the community structure of the ichthyofauna associated with seagrass beds on the Formoso River (Pernambuco - Brazil) was evaluated during the winter of 2008. Twenty-seven manual trawls (15 daytime and 12 nighttime) were performed, and a total of 358 fishes belonging to 18 families, 21 genus and 25 species were collected. The Catch Per Unit Effort (CPUE) by trawling average was 13.5 and 4.95 individuals per species per trawl. The most abundant families were Scaridae (n = 111), Tetraodontidae (n = 63), Lutjanidae (n = 56), Mullidae (n = 39) and Engraulidae (n = 19). Ecological indices for dial changes were always higher for the night period, confirming that such areas are used more frequently during this period. The need for measures to conserve these areas is emphasized, by its importance and vulnerability to human impacts.

【 授权许可】

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