scholarly journals Braga nasuta (Cymothoidae): an ectoparasite of the Giant Amazonian fish Arapaima gigas (Osteoglossidae) fingerlings cultured in the Amazon region in Northern Brazil

2017 ◽  
Vol 39 (4) ◽  
pp. 507511 ◽  
Author(s):  
Elson Cardoso de Jesus ◽  
Lucas Cardoso ◽  
Tamiris Henrique Ferreira ◽  
Mauricio Laterça Martins ◽  
Marília Danyelle Nunes Rodrigues
Keyword(s):  
Amazon Region ◽  
Amazonian Fish ◽  
Arapaima Gigas ◽  
Northern Brazil

Community and infracommunities of metazoan parasites in Hemiodus unimaculatus (Hemiodontidae) from Jari River basin, a tributary of Amazon River (Brazil)

2021 ◽  
Vol 30 (4) ◽  
Author(s):  
Odonei Moia Almeida ◽  
Marcos Sidney Brito Oliveira ◽  
Marcos Tavares-Dias
Keyword(s):  
Species Richness ◽  
River Basin ◽  
Parasite Community ◽  
Amazon Region ◽  
Amazon River ◽  
Metazoan Parasites ◽  
Random Dispersion ◽  
Northern Brazil ◽  
Species Richness And Abundance ◽  
Over Time

Abstract Parasites are an important part of biodiversity, and knowledge of species and their relationship with their hosts helps in monitoring an ecosystem over time. The aim of this study was to investigate the fauna of metazoan parasites in Hemiodus unimaculatus from the Jari River, in the eastern Amazon region, northern Brazil. Of the fish examined, 96.7% were parasitized by one or more species, and a total of 336 parasites such as Dactylogyridae gen. sp.1, Dactylogyridae gen. sp.2, Dactylogyridae gen. sp.3, Dactylogyridae gen. sp.4, Gyrodactilydae gen. sp., Urocleidoides sp.1, Urocleidoides sp.2, Urocleidoides sp.3, metacercariae of Digenea gen. sp., Procamallanus (Spirocamallanus) inopinatus, Contracaecum sp., Neoechinorhynchus sp. and Acarina gen. sp. The parasite community showed low Brillouin diversity (0.58 ± 0.29), low evenness (0.44 ± 0.21) and low species richness (7.40 ± 3.83). There was a predominance of ectoparasites, mainly monogeneans and digeneans. The parasites showed an aggregate dispersion, except for P. (S.) inopinatus, which had a random dispersion. The size of the hosts had no effect on diversity, species richness and abundance of parasites, but other factors structured the parasite community. This is the first study on the parasite community and infracommunities in H. unimaculatus.

A new species of Xenylla Tullberg, 1869 (Collembola: Hypogastruridae) from Central Amazon, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4347 (1) ◽  
pp. 187
Author(s):  
ANA C. R. NEVES ◽  
MARIA C. MENDONÇA
Keyword(s):  
New Species ◽  
Brazilian Amazon ◽  
Amazon Region ◽  
Amazon Forest ◽  
Central Amazon ◽  
Brazilian Amazon Region ◽  
Northern Brazil ◽  
A New Species

A new species of the cosmopolitan genus Xenylla Tullberg, 1869 is herein described and illustrated. The new species, Xenylla hodori sp. nov., from the Amazon Forest of Northern Brazil, resembles X. capixaba Fernandes & Mendonça, 2010 and X. welchi Folsom, 1916 due, the number of eyes, chaetotaxy head and shape of furca. X. hodori sp. nov. is the second species recorded for the Brazilian Amazon Region. 

A systematic review of the production chain of the Arapaima gigas, the giant fish of the Amazon

2020 ◽  
Vol 31 (2) ◽  
pp. 349-363 ◽  
Author(s):  
Gleriani Ferreira ◽  
Jacques Marcovitch ◽  
Adalberto Luis Val
Keyword(s):  
Broad Spectrum ◽  
Empirical Studies ◽  
Single Species ◽  
Amazon Region ◽  
Future Research ◽  
Production Chain ◽  
Content Type ◽  
General Overview ◽  
Arapaima Gigas ◽  
Practical Implications

Purpose The development of the Amazon region depends on the organisation and improvement of production chains able to benefit forest species and animals. The purpose of this paper is to map and categorise the studies developed on the Arapaima gigas, a commercialisable fish native to the Amazon, responding to the following research questions: first, which links of the production chain have most of the studies on the pisciculture of the Amazon region? Second, is environmental performance being approached in studies on production chains in the Amazon region? To reach the objective, the authors used the systematic literature review (SLR) method. The authors analysed a sample of 121 articles published in 95 journals between 1981 and 2018. The research contains bibliometric and contents analyses. The main conclusions include the identification of various possibilities of studies throughout the different production chains in the Amazon region; the multidisciplinarity of research on a single species in the Amazon region; the importance of empirical studies in the construction of knowledge about the natural behaviour of the species; the need for integration and sharing of knowledge to create an efficient and competitive production chain. As a limitation, this study encompasses a broad spectrum of issues in the literature, therefore, it was only possible to offer a general overview of these issues. At the same time, this broad and intentional approach presents a comprehensive framing of the themes and phenomena that occur at each link of the production chain of Amazon fish farming. Design/methodology/approach This research consists in an SLR with organised, transparent and replicable procedures as recommended in the literature (Littell et al., 2008). The SLR is suited to the mapping of areas where there is a high level of uncertainty and new studies are necessary (Petticrew and Roberts, 2006). This research method is especially useful when dealing with a large volume of information (Tranfield et al., 2003). The use of SLR limits researcher bias by trying to evaluate and select relevant studies on the study theme (Petticrew and Roberts, 2006). Findings There are a number of possibilities for studies of the different production chains in the Amazon region; the results of mapping the production chains help to prioritise “what” should be researched in the Amazon region to promote more effective impacts for all stakeholders; research on pisciculture in the Amazon region can be used as a diagnostic tool for public policy formulators; the development of corporate environmental management is intrinsically linked to the process of analysis and understanding of the operations and costs that arise in different links of the production chain. Research limitations/implications As a limitation, this study encompasses a broad spectrum of issues in the literature, therefore, it was only possible to offer a general overview of these issues. Practical implications In terms of practical implications, it is possible to note that the dispersion of themes found in this study confirms the plurality of the richness of the Amazon and suggests that research institutions should be able to commit to the drafting of integrated planning of science, as well as compilation of the results reached. It is also important to highlight Brazil’s role in the leadership of research in the Amazon region compared to other countries. Originality/value The aim of the paper was twofold: to supply a focussed review of the literature on the production chain of a species in Amazon pisciculture and to identify a research agenda capable of overcoming the gaps that impede the development of this chain. More specifically, this study reviewed the available research on the chain in question to analyse the links that have the largest volume of studies and to orient future research.

THE LATERITIC BAUXITE DEPOSIT OF RONDON DO PARÁ: A NEW GIANT DEPOSIT IN THE AMAZON REGION, NORTHERN BRAZIL

2016 ◽  
Vol 111 (5) ◽  
pp. 1277-1290 ◽  
Author(s):  
Saulo Batista de Oliveira ◽  
Marcondes Lima da Costa ◽  
Hélcio José dos Prazeres Filho
Keyword(s):  
Amazon Region ◽  
Bauxite Deposit ◽  
Northern Brazil

scholarly journals Palaemonidae, Euryrhynchidae, and Sergestidae (Crustacea: Decapoda): records of native species from the states of Amapá and Pará, Brazil, with maps of geographic distribution

Check List ◽  
2014 ◽  
Vol 10 (6) ◽  
pp. 1300 ◽  
Author(s):  
Fabiana Ribeiro Pimentel ◽  
Célio Magalhães
Keyword(s):  
Geographic Distribution ◽  
Native Species ◽  
Amazon Region ◽  
Freshwater Shrimps ◽  
Voucher Specimens ◽  
Northern Brazil

A list of the distribution records for 18 species of freshwater shrimps of the families Euryrhynchidae (3 spp.), Palaemonidae (13 spp.) and Sergestidae (2 spp.) from the states of Amapá and Pará are presented. All records are documented by voucher specimens deposited in the three main carcinological collections from northern Brazil: Instituto de Pesquisas Científicas e Tecnológicas do Amapá (Macapá), Instituto Nacional de Pesquisas da Amazônia (Manaus), and Museu Paraense Emílio Goeldi (Belém). Maps of the geographic distribution of these records in the eastern Amazon region are offered, and comments on the zoogeography of the species are made.

Substrate specificity, physicochemical and kinetic properties of a trypsin from the giant Amazonian fish pirarucu (Arapaima gigas)

2021 ◽  
pp. 102073
Author(s):  
Augusto Cézar V. de Freitas-Júnior ◽  
Helane Maria S. da Costa ◽  
Marina Marcuschi ◽  
Marcelo Y. Icimoto ◽  
Marcelo F.M. Machado ◽  
...  
Keyword(s):  
Substrate Specificity ◽  
Kinetic Properties ◽  
Amazonian Fish ◽  
Arapaima Gigas

scholarly journals Updating the geographic records of social wasps (Vespidae: Polistinae) in Roraima state

Sociobiology ◽  
2017 ◽  
Vol 64 (3) ◽  
pp. 339 ◽  
Author(s):  
Paulo Cézar Salgado Barroso ◽  
Alexandre Somavilla ◽  
Rafael Boldrini
Keyword(s):  
Light Trap ◽  
Social Wasp ◽  
Social Wasps ◽  
Amazon Region ◽  
Wasp Species ◽  
Northern Brazil ◽  
High Degree ◽  
New Distribution ◽  
Comprehensive Studies

The Roraima state in Brazil is part of Northern Amazon, an area harboring high biodiversity and high degree of endemism. Nevertheless, there are few studies on diversity of social wasps occurring in this region. This study presents a list of social wasps (Vespidae: Polistinae) collected actively and using Malaise, Suspended and Light trap in six localities in Roraima state. A total of 85 species of 14 genera were collected. Fourty-five of these species are new distribution records to Roraima state, some species are not common found in the collections and lists of species, and some are recorded for the second time to Brazil or the Amazon region. This increase may be an indication that the Polistinae richness is probably higher in the regions studied and that Roraima may well contain a number of additional (as yet unrecorded) social wasp species. More comprehensive studies are needed in order to increase the knowledge of wasp species in Roraima, contributing to increased knowledge of the diversity in Northern Brazil.

scholarly journals Diversity of yeasts during fermentation of cocoa from two sites in the Brazilian Amazon

2019 ◽  
Vol 49 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Silvana de F. Oliveira de ALMEIDA ◽  
Letícia R Carvalho SILVA ◽  
Gilson Celso A. Chagas JUNIOR ◽  
Guilherme OLIVEIRA ◽  
Silvia Helena Marques da SILVA ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
Amazon Region ◽  
Starter Cultures ◽  
Universal Primers ◽  
Spontaneous Fermentation ◽  
Zygosaccharomyces Bailii ◽  
Brazilian Amazon Region ◽  
Pichia Manshurica ◽  
Northern Brazil

ABSTRACT The purpose of this study was to identify the yeasts involved in spontaneous fermentation of cocoa from the Brazilian Amazon region. The fermentation process was carried out experimentally with cocoa seeds from two sites (Medicilândia and Tucumã), State of Pará, northern Brazil, during a six-day period. Totals of 44 yeasts were isolated from Medicilândia and 29 from Tucumã. Molecular identification was carried out by sequencing the D1/D2 region fragment of the rRNA 26S gene, expanded with universal primers for the NL1GC and LS2 eukaryotes. Pichia manshurica and Saccharomyces cerevisiae were identified in Medicilândia and five yeast species (Pichia fermentans, P. kudriavzevii, P. manshurica, S. cerevisiae and Zygosaccharomyces bailii) were identified in Tucumã. The results showed that P. manshurica and S. cerevisiae may have potential for use as starter cultures in future studies to improve the quality of cocoa seeds fermented in the Brazilian Amazon region.

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