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Variación espacial de la comunidad de peces asociados a un canal de mangles en Cayo Coco, Cuba/Spatial variation of a fish community inhabiting a mangrove channel in Cayo Coco, Cuba

2014; University of Havana; Volume: 31; Issue: 2 Linguagem: Espanhol

0252-1962

Héctor Miguel Salvat Torres, Fabián Piña Amargós, Gaspar González-Sansón,

Marine Bivalve and Aquaculture Studies

En este trabajo se caracterizo la comunidad de peces asociados a un canal de mangle que comunica al mar una laguna costera, ubicada en Cayo Coco, Ciego de Avila. Se comparo la distribucion de los peces en todo el canal de mangle y se relaciono con los parametros abioticos del area y las caracteristicas del habitat. Se realizaron censos visuales con buceo libre y se midio el area de refugio y sombra en toda su extension. Se tomo la temperatura del agua, salinidad, profundidad, marea, velocidad de la corriente de marea, transparencia del agua y la fase lunar de esa noche. Se observaron 47 especies de peces, pertenecientes a 22 familias. Se observo que al inicio (mas cerca del mar) del canal la abundancia de peces pequenos era mayor que al final del mismo (mas cerca de la laguna). Mientras que, los peces de mayor tamano estaban al final del canal. Se establecio una fuerte relacion entre la distribucion de los peces, la complejidad estructural y la sombra del canal, reforzando la importancia de los manglares para estos organismos. Palabras claves : variacion espacial; comunidad de peces; manglares; ASW, Cuba. ABSTRACT In this study, the characterization of a fish community inhabiting a mangrove channel that connects to a coastal lagoon with the open ocean in Cayo Coco, province of Ciego de Avila, was carried out. Fish distribution along the mangrove channel was assessed and related to the abiotic parameters of the area and to habitat characteristics. Daily visual censuses with snorkel gear were conducted for counting fish species. Refuge and shadow area were measured. Temperature, salinity, depth, tides, tidal current, transparency and face of the moon were also measured. 47 fish species grouped in 22 families were observed. Abundance of small-sized fish at the beginning (nearer to the sea) of the channel was greater than at the end (nearer to the lagoon). Meanwhile large-sized fish were found at the end of the channel. A strong relationship among fish distribution, structural complexity and shadow of the channel was found, which reinforces the importance of the mangrove forests for these organisms. Key words: spatial variation; fish community; mangrove forests; ASW, Cuba.