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RESUMO Este estudo tem como objetivo analisar a importância da carcinicultura marinha para as os trabalhadores e comunidades próximas a uma fazenda de carcicnicultura no Município de Luís Correia (PI), ABSTRACT This study aims to analyze the importance of the marine shrimp farming for workers and communities near a shrimp farm in the municipality of Luis Correia (PI) by socioeconomic characterization and perception of changes in the social, economic and environmental aspects from the establishment of the farm. Thus were prepared two questionnaires, one addressed to employees (55) of the farm and another for residents (57)

RESUMO. O presente trabalho teve o objetivo de relatar a primeira ocorrência do camarão tigre-gigante Penaeus monodon Fabricius, 1798 no litoral piauiense. Foi capturado um único exemplar em março de 2015 por uma embarcação da frota camaroneira. No laboratório o espécime foi identificado, sexado, pesado e mensurado no comprimento do cefalotórax (CC), comprimento do pós-orbital (CPO) e comprimento total (CT). O exemplar capturado foi uma fêmea de 298,45 g, 316,20 mm (CT), 133,85 mm (CC), e 90,10 mm (CPO) capturada na faixa de profundidade de 4 a 6 metros na latitude: 2°50'51.1" S e longitude: 41°40'03.9" W. Palavras-chave: bioinvasão, Penaeus monodon, plataforma continental piauiense. ABSTRACT. This study aimed to report the first occurrence of giant asian tiger shrimp Penaeus monodon Fabricius, 1798 in Piauí coast. A unique example was captured in March 2015 by a shrimp fishing boat. In the laboratory the specimen was identified, sexed, weighed and measured in carapace length (CL), post-orbital length (POL) and length (TL). The exemplary captured it is a female with 298.45 g, 316.20 mm (TL), 133.85 mm (CL) and 90.10 mm (POL) and was found in the depth range of 4 to 6 meters in latitude: 02°50'51.1"S and longitude: 041°40'03.9"W.

There is an increasing interest in essential oils extracted from Verbenaceae plant species as potential sources of biologically active compounds that could provide a starting point for designing novel phyto-pharmaceuticals in aquaculture. The present study was aimed to investigate the chemical composition, antioxidant activity, acute toxicity and antimicrobial effects against Vibrio parahaemolyticus of essential oils extracted from Lippia alba and L. origanoides. Approximately 23 components were identified and quantified by gas chromatography-mass spectrometry and flame ionization detection in each species' essential oil. The most predominant compounds were geranial (23.0%), limonene (17.0%) and neral (15.5%) in L. alba, and thymol (47.2%), p-cymene (16.0%) and E-caryophyllene (11.3%) in L. origanoides. The essential oils have antibacterial activity against Vibrio parahaemolyticus presenting Minimum Inhibitory Concentration (MIC) and Bactericidal Concentration (MBC) values between 156-625 µg mL -1 . The essential oils also show antioxidant potential estimated by 1,1-diphenyl-2picrylhydrazyl (DPPH) free radical scavenging assays, presenting IC 50 of 60.16 mg mL -1 and 0.22 mg mL -1 for L. alba and L. origanoides EO, respectively. Both oils were classified as toxic to Artemia salina nauplii. Therefore, these essential oils may be useful for controlling pathogenic bacteria important to the aquaculture industry.

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