The aim of this study was to evaluate the effects hatchery-tank colours (white, yellow, red, blue, green and black) on performance larval culture Macrobrachium amazonicum. larvae were fed daily with newly hatched Artemia nauplii. affected light level inside tanks, consumption nauplii (AN), development, survival, mass gain productivity postlarvae (PL). overall per larva during cycle 30% 45% higher in red tanks respectively. significant variation AN among tank (P = 0.0006) indicates that M....

Introduction of Macrobrachium rosenbergii to Brazil for prawn farming has resulted in escapes the local natural environment. In some areas risk feral populations establishing environments is considered low due a lack suitable habitat completing life cycle. contrast, introduction this species along mangrove coasts northern can result escape highly reproduction. We confirm colonization these habitats by M. and define as casual exotic Brazil. highlight that reproduction now occurring, meaning...

Number of nephrons, renal hemodynamics, and glomerular morphometry were assessed in rats submitted to a multideficient diet which was developed from basic regional consumed Brazilian region sugarcane cultivation. We evaluated three groups male Wistar rat offspring: (1) dams fed standard throughout mating, pregnancy lactation (control group) (2) the during mating (MalN1 or (3) pregnancy, (MalN2 group). At adult age, animals anesthetized measure mean arterial blood pressure hemodynamics. The...

The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in world and has been introduced into more than 40 countries. In some countries, this prawn considered an invasive species that requires close monitoring. Recent changes taxonomy (separation M. rosenbergii dacqueti) require a re-evaluation taxa. work, molecular analyses were used to determine which these two was Brazil establish geographic origin populations have invaded Amazonian coastal...

The freshwater prawn Macrobrachium equidens, which is native species of the Indo-Pacific Region, was recorded for first time on Amazon coast Brazil. This found to inhabit same environment as two species, M. amazonicum and acanthurus, morphologically very similar latter. identification confirmed by genetic analysis sequences mitochondrial Cytochrome Oxidase (COI) gene. A detailed description morphological features reproductive biology equidens in this new presented.

The present study analyzed the effects of prey density, time day, and ontogenetic development on predation Artemia nauplii by larvae Amazon river prawn, Macrobrachium amazonicum, as well possible synergy among these factors. Larvae were raised in 120‐L tanks with biological filter systems, fed recently hatched nauplii, using two feeding management protocols: (a) once per day at 2000 h (high density – HD) (b) half ration provided h, complemented 0800 following a replacement consumed up to...

The appropriate feeding regime for larvae and post-larvae of crustacean decapods is essential successful larval culture. Reports on the development morphology mouthparts foregut these crustaceans have aided in selection foodstuffs consequently increased survival growth rate during development. In present study, functional was investigated freshwater prawn M. amazonicum (Heller, 1862). From observations gathered both outer inner apparati first stage obligatory lecithotrophy behaviour...

O camarão-da-Amazônia (Macrobrachium amazonicum) é um recurso pesqueiro explorado comercialmente em todo o estado do Pará, sendo vendido feiras, mercados, supermercados e peixarias. Este produto gera trabalho renda para significativo contingente de pessoas, como pescadores, intermediários, funcionários estabelecimentos processadores comerciantes. objetivo deste estudo foi analisar a comercialização no visando identificar os produtos ofertados por mesorregião percepção dos varejistas termos...

Here we describe and illustrate in detail four early zoeal stages of Alpheus estuariensis Christoffersen, 1984 from larvae reared the laboratory. Two ovigerous females were collected tidal creek Bragança estuary, state Pará, northeastern Brazil. After hatching, placed small containers (with 10 each). Females deposited Museu Paraense Emilio Goeldi (MPEG 0803) each larval stage Zoological Museum São Paulo University (MUSP18452). Ten exuviae dissected with fine needles under an ocular...

In the present study, we carried out experiments on diet of freshwater prawn Macrobrachium equidens. We tested which type food and density is suitable for larval development. For experiment food, eight treatments were out: (I) starvation, (AL) microalgae, (RO) rotifers, (AN) Artemia, (RO + AN) rotifers (AL RO) microalgae RO Artemia. used had resulted in a high survival rate previous experiment. Three 4, 8 16 Artemia nauplii /mL. The feeding during development was observed. survival, weight...

The present study describes the morphological changes of mouthparts and foregut freshwater prawn M. acanthurus that occur during development larvae first juvenile. results indicate zoeae I have with reduced setae a structureless indicates obligatory lecithotrophic behaviour. There is an increase in number these structures between zoea II juvenile stage, indicating adaptation organism for feeding. More complex structural alterations were observed juvenile, which acquires benthonic habits,...

Abstract Background Macrobrachium amazonicum is a freshwater prawn widely distributed in South America that undergoing speciation, so the denomination “ M. complex” used for it. The mitochondrial cytochrome c oxidase subunit I (COI) gene has been to elucidate this but heteroplasmies and pseudogenes have recorded, making separation difficult. Obtaining genes from cDNA (RNA) rather than genomic DNA an effective tool mitigate those two types of occurrences. aim study was assemble silico (mtDNA)...

O camarão-da-Amazônia Macrobrachium amazonicum é um recurso pesqueiro explorado com fins de subsistência e comerciais no estado do Pará, sendo consumido por membros todas as classes sociais. objetivo deste estudo foi analisar o perfil consumidor território paraense. Entre fevereiro agosto 2019 foram aplicados 1.260 questionários à consumidores pescado dos municípios Belém, Cametá, Tucuruí, Santarém, Altamira Breves. As informações socioeconômicas referentes ao consumo tabuladas em planilhas...

No cultivo das larvas de crustáceos maiores sobrevivências são observados nas salinidades ideais devido ao menor gasto energético com a osmorregulação. Em ótimas condições, é esperado maior longevidade destas sob completa inanição. presente estudo, foram obtidas fêmeas oví­­geras do camarão água doce Macrobrachium amazonicum, capturadas duas regiões costeiras da Amazônia: várzea (Abaetetuba/PA) e estuarina (Bragança/PA). As mantidas em inanição partir zoea I VII submetidas í­Â s 0, 2, 5, 10,...

Over recent years, Macrobrachium amazonicum has become a popular species for shrimp farming due to their fast growth, high survival rates, and marketability. Several studies have focused on the development of new technology culture this species, but many aspects nutrition physiology remain unknown. Thus, goal present study was obtain transcripts putative genes encoding digestive enzymes, based library cDNA from hepatopancreas M. amazonicum, sequenced in Ion TorrentTM platform. We identified...

Abstract Bopyrid isopods of the genus Probopyrus are well-known parasites freshwater prawns Macrobrachium . The parasitism coastal populations amazonicum by bithynis , for example, has been documented since late 1980s. Despite this, molecular data on different not available any species. present study is first to describe from distinct regions Amazon basin based sequences two genes, mitochondrial cytochrome oxidase C subunit I (COI) and nuclear 18S ribosomal DNA (18S rDNA) gene. analyses...

The canned Amazon River prawn with sauce (tucupi and jambu) was thermally prepared (121 ºC) at three different times (T1: 15 T2: 20 T3: 25 minutes) in glass bottles. product obtained 20.86% crude protein, good acceptance by consumers (global >7) measured through centesimal sensory analysis of the hedonic scale. Increased exposure caused obvious changes sensorial characteristics product, which were not evidenced analysis, for this reason, texture profile (TPA) color (CIELAB) carried out,...

The acid phosphatase (ACP) enzyme is responsible for the hydrolysis of phosphate monoesters under acidic conditions, being widely found in microorganisms, animals and plants. In crustaceans, ACP plays a key role defense mechanism distinct species. Furthermore, expression sensitive to pollution, particularly related stress response by exposure heavy metals organophosphate pesticides. However, most studies crustaceans refer biochemical properties but little known about its structural...