Estrutura populacional da nematofauna nas proximidades do Hotel Tropical Tambaú, praia de Tambaú, João Pessoa - PB.

Abstract

Nematode, group highlighted in meiofauna, they have representatives in many terrestrial and aquatic enviroments. Its composition ond distribution are influenced by diferente abiotic favors. Studies about this group has developed increasingly due to importance to marine ecosystems, participating nutrient cycling, as food resource for other species and/or as indicators of envirironmental quality. In order to know the community nematofaunista around Tropical Hotel Tambaú two collections of material in the field for laboratory analysis were peformed in April (a rainy seasons) and another in October (dry season) in three fixed profiles with nine points in midlittoral, region around Tropical Hotel Tambaú (starting near the wall and away towards the sea). Each point consists of four replicates, totaling thirty-six samples per collection in total seventy-two samples collected always with aid of a PVC pipe 9,42 cm² internal área and 15 cm of lenght. It was collected sediment samples for particle size and verification of organic contente analysis. Temperature and salinity were measured on site of collection. Nematodes in the laboratory the samples and indentified at genus level. Nematofauna of the search region was composed of 48 gender distributed in 17 families. The rainy season genres that presented constant frequency were Anoplastoma, Daptonema, Neochromadora and Sabatieria, in the dry season was Daptonema. Concerning proximity to the Tropical Hotel Tambaú, in points abutting the genre with constant frequency was Anoplastoma, in the intermediate Sabatieria, and for way Daptonema, Microlaimus, and Neochromadora, in rainy season. In dry season was not constant at points abutting gender, in the intermediate were Daptonema and Microlaimus, in Daptonema, Sabatieria and Pseudosteneiria away. No dominant genre in the rainy and dry seasons, the highest relative abundance was Daptonema. Statiscally community structure proved different, as spatially as seasonally. In terms of diversity, evenness and richness, the rainy season had the highest rates.