Ecosystem engineering species create, modify, and/or maintain the characteristics of the environment. The polychaete Phragmatopoma caudata builds large sand reefs in the intertidal region of the Brazilian coast with high structural complexity, favoring the increase of diversity and interactions among the species associated. However, there are no studies concerning the association of polychaetes with crustacean macrofauna in the northeastern Brazil ecoregion, leaving an information gap on baseline biodiversity. Our aim was to analyze the effect of P. caudata colonies (PC) on the local diversity of macrocrustaceans compared to the rocky shore (RS) microhabitat. Monthly collections were carried out in low tide from September 2015 to August 2016 on 10 × 10 m quadrants for fauna and environmental variables (temperature and salinity) samples. In each microhabitat, the capture effort was two hours by two researchers. We collected 3,390 individuals, 60% associated with the colonies of PC and 40% with the RS. The PC obtained higher Shannon diversity, Pielou evenness and species richness coupled with milder water temperature and salinity conditions (minor air exposure during tide), compared to the RS that obtained greater species dominance and more extreme abiotic conditions (major air exposure). The Porcellanidae family stood out because all its species were highly abundant and had high occurrence in the colonies. The tropical Brazil porcelain crab Pachycheles greeleyi was dominant in both microhabitats (major dominance in PC). The structural complexity in the reefs of PC promoted higher availability of niches for the species, as more shelter for the resident species and refugium for temporary species with preference for more complex microhabitats. Conservation managers should prioritize the health of these colonies and subsequent species that constitute important ecosystemic and fishery resources.

After more than 30 years of species' first capture on the Brazilian northeast coast, we report the second occurrence of the starfish Luidia senegalensis with niche modeling remarks on its distribution. Bottom trawl net collected specimens with artisanal fishery boat in Rio Grande do Norte State, northeast Brazil. It was noted the existence of a large number of regions, with high suitability for the occurrence of this species, in South America taking into account the ecological niche modeling, when compared to North and Central American continents. Benthic salinity range, calcite, and benthic minimum temperature were the most relevant for modeling. The northeastern, eastern, and southeastern Brazil ecoregions showed the most considerable amount of areas with high suitability for L. senegalensis. The niche modeling revealed essential aspects of the species and its distribution, raising concerns with regards to its future stability.

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O presente estudo teve como objetivo analisar a forma que a propaganda atua na sociedade e influência de forma direta na decisão de compra dos diversos perfis de consumidores do município de Itumbiara. Foi realizado em um dos supermercados da cidade de Itumbiara, mediante pesquisa de campo composta pela aplicação de questionários indutivos a 30 clientes e ao gestor de marketing da referida empresa. Foi relatado que apropaganda antes se dava através de mascates, ambulantes, os quais divulgavam os produtos de porta em porta ou nos estabelecimentos. Com o passar dos anos isso foi mudando, o acesso a televisão em meados dos anos 50 foi fundamental para alcançar os consumidores, que atualmente são convencidos pelos vários meios de marketing (internet, rádio, jornais e revistas) a consumir cada vez mais além de visualizarem facilmente informações sobre os produtos: marca, quantidade, qualidade, etc. Os lucros aumentam e a propaganda informatizada sempre estabelece novas estratégias a fim de atrair clientes.

Among the most abundant organisms in marine regions are crustaceans. Arthropod group that presents high ecological and morphological diversification. Representatives of this group include the Porcellanidae family, made up of organisms known as porcelain crabs. Pachycheles greeleyi is a endemic anomura from the northeast coast of Brazil, belonging to the Porcellanidae family and found in various substrates such corals and sandstone reefs formed by polychaetes. P. greeleyi specimens were collected from a beach in the state of Rio Grande do Norte and evaluated when the deformities present in their carapaces due to the presence of the parasite Aporobopyrus curtatus.