Aspectos da conservação sobre a reprodução de peixes de riachos na Reserva Biológica de Sooretama (Sooretama-ES)

• Autor(a) principal: Silva, Priscila Plesley Alves da
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/8296
• topic: Icthyofauna; Conservation units; Ecology; Atlantic Forest; Reproductive strategies; Estratégias reprodutivas; Ecologia; Ictiologia; Áreas de conservação de recursos naturais; Ecologia; Peixe x Reprodução; Mata Atlântica - Espírito Santo (Estado); 502

The preservation of the Atlantic Forest and its faunal and floristic biodiversity is a relevant concern today, being the second most threatened forest in the world, it demands special attention regarding its conservation. Knowing how fish communities maintain themselves in these impacted environments is fundamental for proposing management plans, especially in protected areas such as biological reserves. In order to understand the relationship between protection of conservation units and reproductive strategies and tactics of streams fish, four study bases were selected that include protected areas by the Sooretama Biological Reserve (Espírito Santo) and unprotected areas. The samplings occurred systematically, monthly for one year. Environmental quality was interpreted through the "Habitat Integrity Index" (IIH) and complemented by the measurement of abiotic factors, as well as sediment analyzes that aided in the characterization of the sample bases. In all, 2410 individuals were collected, distributed in five orders, ten families, 18 genera and 20 species, distributed among the study bases. Geophagus brasiliensis, Astyanax aff. intermedius, Hoplias malabaricus, Knodus cf. moenkhausii and Mimagoniates microlepis, were analyzed for reproductive aspects, presenting all, except G. brasiliensis, split spawning and varied strategies regarding the occurrence environment. The internal points of the Reserve were considered more preserved environments, offering the necessary resources for reproduction, and the points outside the Reserve, considered more impacted, show scarcity of resources, causing the occurring species to use appropriate tactics to guarantee the survival of the offspring. Based on the results obtained in this study, it is suggested measures to protect the areas surrounding conservation units, since the impacts occurring upstream of the reserve areas affect local biodiversity, causing incalculable damage to the fish communities.