Diversidade funcional da ictiofauna da zona de arrebentação de Jaguaribe, Itamaracá, litoral norte de Pernambuco

• Autor(a) principal: FAVERO, Fernanda de Lima Toledo
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
• Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/8421
• topic: Ictiofauna; Ecomorfologia; Diversidade funcional; Zona de arrebentação; CIENCIAS AGRARIAS::RECURSOS PESQUEIROS E ENGENHARIA DE PESCA

Surf zones are key habitats in fish ecology, providing shelter against predators and high abundance of food. The resulting chapters of this research, aimed to describe the structure and functioning of the assemblage of inventoried fish in the surfzone and deposited in the Ichthyology Laboratory Reference Collection / DEPAq / UFRPE (LIUFRPE), analyzing the occurrence of these species considering the influence of the time scale (years 2005 to 2008), crescent and new moon, dry and rainy seasons and day and night periods through different functional diversity methodologies (functional guilds, ecomorphology and functional diversity indices). Chapter 1 deals with the classification of LIUFRPE fish into functional and trophic guilds. Of the 125 species belonging to two classes, 25 orders and 44 families, there was a higher classification of species in migrant, opportunistic and dependent marine use guilds (90.6%) and within trophic guilds there was a predominance of piscivorous and omnivorous species (82.0%). Regarding their patterns of occurrence, homogeneity was observed throughout the sampling period, without variation due to any of the temporal variables (day and night, dry and rainy seasons, new and crescent moon, months and years) studied. In general, the results point to the high importance of this environment in the composition and abundance of fish communities, especially marine species. In chapter 2 the ecomorphology of the fifteen dominant species of LIUFRPE was studied, where 15 morphological measures related to fish feeding and locomotion were taken to apply 16 ecomorphological indices. The results showed a great variety of morphology among the analyzed species, such as the greater number of them presenting laterally flattened body, relatively developed eyes and high body adaptation for fast swimming and maneuverability, fundamental characteristics for fish using high hydrodynamic environments, such as surfzones. Differing from the other species, Catharops spixii, a ventrally flattened fish with an omnivore feeding habit, had a high correlation only with the bowel length (Gl) and caudal peduncle (CP) acceleration indexes. The use of ecomorphological indices applied in studies of organization and functioning of fish assemblages in surfzones, proved to be a strong ally for understanding the behavior of the usual species of this environment, and may add important information for management of these environments.