In this study, we evaluated the production potential of the polyculture of Freshwater Angelfish (Pterophyllum scalare, Cichlidae) and Pacific white shrimp (Litopenaeus vannamei). Two experimental trials were set up. The first trial entailed the use of a randomized design to investigate three treatments options: angelfish monoculture, shrimp monoculture, and fish and shrimp polyculture in 12 experimental 15 m2 ponds. In the second trial, we investigated two treatments (polyculture of caged fish and uncaged fish) in 10 experimental units. In trial 1, polyculture negatively affected fish growth and survival. However, fish did not affect shrimp growth and the greatest profit was achieved in polyculture. In trial 2, caging fish improve the growth of both fish and shrimp. An economic analysis showed the greatest profit and benefit cost ratio for caged fish compared with uncaged fish. We conclude that growing P. scalare and L. vannamei together is a better strategy than shrimp monoculture in low‐salinity water. The use of caged fish in such a polyculture operation would enhance productivity and profitability.
The goal of this study was to demonstrate the feasibility of culturing the seahorse Hippocampus reidi in an organic integrated multi-trophic aquaculture farm that produces the oyster Crassostrea brasiliana and the shrimp Litopenaeus vannamei. Experiments were conducted to evaluate the effects stocking density and food (natural zooplankton, Artemia nauplii, or both) for the juvenile I, which are fish from 1 to 15 days after birth. Stocking density effect was studied on growth and survival of juveniles II from 30 days to commercial size in net cages. Survival of the juvenile I was not affected by stocking densities from 2 to 5 ind L-1 and was greater than 70% in all treatments. Seahorse length, however, was inversely related to stocking density. Both treatments with wild zooplankton promoted higher seahorse survival and growth than diet composed exclusively by Artemia sp. during the first 15 days of life. Juvenile II growth decreased with stocking density from 5 to 40 ind m-3 but survival was not affected by it. The total benefit and proportion of colored animals increased significantly with stocking density. The present study confirms the technical feasibility of organic multi-trophic seahorse production in net cages. Even at the highest density tested the seahorses grew well and could generate high profits.
O presente trabalho tem como objetivo analisar quais as estratégias de responsabilidade social na empresa WF Comércio de Materiais Hidráulicos com foco na logística reversa. Apresenta-se a empresa alternativas para implementação de ações sustentáveis com foco na redução de desperdícios de dejetos sólidos, consequentemente, minimizando os custos diretos e indiretos em seus produtos e serviços, gerando visibilidade e mais competitividade a organização frente aos seus concorrentes. O marketing verde, proporciona campanhas e ações que objetivam minimizar a degradação e os impactos ambientais. Estando atrelado a logística reversa, torna-se possível a conscientização de funcionários, clientes e da sociedade ao que concerne a sustentabilidade, incentivando assim, a redução do uso de materiais, a reciclagem de resíduos para que ainda sirvam de matéria prima, a reutilização de materiais que estão em perfeito estado de uso, além de estimular hábitos e atitudes mais sustentáveis, logo são ações que passam ser adotadas pela empresa gerando equidade e garantindo melhor qualidade de vida as gerações futuras. Através da pesquisa, detectou-se como área crítica da organização a questão do meio ambiente. No entanto, apresentaram-se ferramentas da Gestão Ambiental como modo de eficácia no processo produtivo, gerando resultados satisfatórios a empresa.
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