DNA barcoding reveals blend of silver catfishRhamdiaspecies from fish farms in Southern Brazil

2018 ◽  
Vol 49 (5) ◽  
pp. 1907-1913 ◽  
Author(s):  
Bianca Maria Soares Scaranto ◽  
Josiane Ribolli ◽  
Evoy Zaniboni-Filho
Keyword(s):  
Dna Barcoding ◽  
Southern Brazil ◽  
Fish Farms

scholarly journals From Africa to Brazil: detection of African Oreochromis niloticus parasites in Brazilian fish farms

2019 ◽  
Vol 31 ◽  
Author(s):  
Diego Azevedo Zoccal Garcia ◽  
Mário Luís Orsi ◽  
Ângela Teresa Silva-Souza
Keyword(s):  
Oreochromis Niloticus ◽  
Native Species ◽  
Parasite Species ◽  
River Basins ◽  
Southern Brazil ◽  
Specific Procedure ◽  
Fish Farms ◽  
Gill Parasite ◽  
Gill Parasites ◽  
Imminent Risk

Abstract Aim To evaluate the introduction of Oreochromis niloticus gill parasites in the Paranapanema River basin, northern Paraná, southern Brazil, as well as to inventory its occurrences in Brazilian fish farms and discuss the risks of transmission to native fauna. Methods The gills of 632 fish specimens from four fish farms in the Paranapanema Basin were analyzed. The parasites were collected, processed and identified according to specific procedure. Literature review was carried out to compile records of occurrence of gill parasites species in other Brazilian river basins. Results A total of seven (7) species of parasites were recorded, five (5) of the genus Cichlidogyrus, one (1) of Scutogyrus (Ancyrocephalidae, Monogenoidea) and one (1) of Lamproglena, Lamproglena monodi (Copepoda, Lernaeidae). All native from Africa. Some of these species have been reported in fish farms located in five other Brazilian watersheds. However, in this study a greater number of African gill parasite species was recorded in fish farms in northern Paraná (seven species), in the Paranapanema Basin, with Cichlidogyrus rognoni reported only for this basin. Conclusions The results confirm the introduction of these African parasites along with their host, O. niloticus, and the establishment of these species in Brazilian waters, since many specimens belonging to the species identified herein presented breeding activity for at least one period of the year. Although, only L. monodi has been recorded parasitizing Brazilian native species, data reported for other countries demonstrates the imminent risk of transmission of these O. niloticus parasites to native cichlids.

scholarly journals Molecular Identification of Shark Meat From Local Markets in Southern Brazil Based on DNA Barcoding: Evidence for Mislabeling and Trade of Endangered Species

2018 ◽  
Vol 9 ◽  
Author(s):  
Fernanda Almerón-Souza ◽  
Christian Sperb ◽  
Carolina L. Castilho ◽  
Pedro I. C. C. Figueiredo ◽  
Leonardo T. Gonçalves ◽  
...  
Keyword(s):  
Endangered Species ◽  
Dna Barcoding ◽  
Molecular Identification ◽  
Southern Brazil ◽  
Local Markets

scholarly journals Seasonal influence on the hematological parameters in cultured Nile tilapia from southern Brazil

2011 ◽  
Vol 71 (3) ◽  
pp. 719-725 ◽  
Author(s):  
GT. Jerônimo ◽  
LV. Laffitte ◽  
GM. Speck ◽  
ML. Martins
Keyword(s):  
Nile Tilapia ◽  
Hematological Parameters ◽  
Fish Farm ◽  
Southern Brazil ◽  
Fish Farms ◽  
Handling Characteristics ◽  
Four Seasons ◽  
Hematological Analysis ◽  
Red Blood Cell Count ◽  
Autumn And Winter

This study evaluated seasonality in hematological parameters of Nile tilapia cultured in the state of Santa Catarina, southern Brazil. A total of 240 fish were examined during four seasons between April 2007 and March 2008 in three different fish farms. After being anesthetised in a benzocaine solution, blood samples were withdrawn into syringes containing a drop of 10% EDTA for hematological analysis. The results were compared between fish farms and seasons, which are well delimited in southern Brazil. In a traditional fish farm in Joinville in the summer, there was an increase in the percentage of hematocrit and in the red blood cell count. The highest values of total leukocytes were found in fish from fee-fishing in Blumenau in the autumn while the lowest values occurred in those from swine consorted system in Ituporanga in the summer. Thrombocytosis was observed in the autumn, and lymphocytosis was found in both the autumn and winter in tilapia from all fish farms investigated. Neutrophilia was only observed in winter and autumn in fish from Blumenau and Ituporanga. This work demonstrated the influence of seasonality and the handling characteristics of each fish farm on certain hematological parameters in Nile tilapia.

scholarly journals Identifying Nile tilapia strains and their hybrids farmed in Brazil using microsatellite markers

2016 ◽  
Vol 51 (10) ◽  
pp. 1744-1750 ◽  
Author(s):  
Rafael Antunes Baggio ◽  
Raphael Orélis-Ribeiro ◽  
Walter Antonio Boeger
Keyword(s):  
Oreochromis Niloticus ◽  
Bayesian Model ◽  
Nile Tilapia ◽  
Southern Brazil ◽  
Clustering Method ◽  
Fish Farms ◽  
Model Based Clustering ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Uruguay River ◽  
Reference Strains

Abstract: The objective of this work was to evaluate a Bayesian model-based clustering method to identify the strains of Nile tilapia (Oreochromis niloticus) individuals from fish farms in Southern Brazil. Assignment methods using nine microsatellite loci were applied to differentiate individuals of five reference strains (GIFT, GST, Nilótica, Chitralada, and Saint Peter) and to identify individuals of unknown strains from fish farms near the Itaipu reservoir and in the Uruguay River basin. The procedure assigned the correct strain in more than 90% of the cases and was also able to detect hybrids between strains. The obtained results showed that several fish farms in Southern Brazil cultivate more than one tilapia strain and even interstrain hybrids. The proposed methodology is a reliable tool for the identification of the strain origin of Nile tilapia individuals.

scholarly journals Escapes of non-native fish from flooded aquaculture facilities: the case of Paranapanema River, southern Brazil

2018 ◽  
Vol 35 ◽  
pp. 1-6 ◽  
Author(s):  
Armando César Rodrigues Casimiro ◽  
Diego Azevedo Zoccal Garcia ◽  
Ana Paula Vidotto-Magnoni ◽  
John Robert Britton ◽  
Angelo Antonio Agostinho ◽  
...  
Keyword(s):  
River Basin ◽  
Native Species ◽  
Biodiversity Loss ◽  
Native Fish ◽  
Southern Brazil ◽  
Fish Farms ◽  
Native Fishes ◽  
Aquaculture Facilities ◽  
The Impact ◽  
Large Floods

Non-native species are a major driver of biodiversity loss. Aquaculture activities play a key role in introductions, including the escape of fishes from fish farm facilities. Here, the impact of flooding due to El Niño rains in 2015/2016 in the Lower and Middle Paranapanema River basin, southern Brazil, was investigated by evaluating fish escapes from 12 fish farms. The flooding resulted in the escape of approximately 1.14 million fishes into the river, encompassing 21 species and three hybrids. Non-native species were the most abundant escapees, especially Oreochromisniloticus (Linnaeus, 1758) and Coptodonrendalli (Boulenger, 1897) (96% of all fish). Only seven native fishes were in the escapee fauna, comprising 1% of all fish. Large floods, coupled with inadequate biosecurity, thus resulted in considerable inputs of non-native fish into this already invaded system.

scholarly journals Seasonal variation on the ectoparasitic communities of Nile tilapia cultured in three regions in southern Brazil

2011 ◽  
Vol 71 (2) ◽  
pp. 365-373 ◽  
Author(s):  
GT. Jerônimo ◽  
GM. Speck ◽  
MM Cechinel ◽  
ELT Gonçalves ◽  
ML Martins
Keyword(s):  
Culture System ◽  
Nile Tilapia ◽  
Normal Values ◽  
The Body ◽  
Fish Ponds ◽  
Southern Brazil ◽  
Fish Farms ◽  
Mean Intensity ◽  
Four Seasons ◽  
Autumn And Winter

A total of 240 Nile tilapia were examined between April 2007 and March 2008, gathered from three different fish farms, 20 fish in each fish farm, in the four seasons of the year. Fish ponds were located in Joinville, Blumenau and Ituporanga, Santa Catarina state, Brazil and each pond had a different culture system. Prevalence, mean intensity, mean abundance and mean relative dominance were compared among fish ponds and seasons. During this period, the water quality was kept in normal values. Piscinoodinium pillulare (Dinoflagellida) was the most dominant parasite followed by Trichodina magna e T. compacta (Ciliophora), Cichlydogyrus sclerosus, C halli, C. thurstonae, Scutogyrus longicornis (Monogenoidea), copepodids Lernaeidae gen. sp. The highest prevalence, mean intensity and mean abundance of ectoparasites were found on the body surface in fish from Joinville followed by Blumenau and Ituporanga. In the gills, the highest mean intensity and mean abundance were found in fish from Blumenau and Ituporanga in the winter. Piscinoodinium pillulare showed prevalence 100% during autumn in Blumenau and Ituporanga. In winter P. pillulare occurred in all study facilities. Fish from Joinville showed 100% prevalence of Monogenoidea during all seasons, as well as the highest mean intensity and abundance. The results showed that the majority of examined fish had higher infestations by protozoan during autumn and winter and higher infestations by metazoan have occurred in spring and summer.

The label “Cação” is a shark or a ray and can be a threatened species! Elasmobranch trade in Southern Brazil unveiled by DNA barcoding

Marine Policy ◽  
2020 ◽  
Vol 116 ◽  
pp. 103920 ◽  
Author(s):  
Cristina Bernardo ◽  
Aisni Mayumi Corrêa de Lima Adachi ◽  
Vanessa Paes da Cruz ◽  
Fausto Foresti ◽  
Robin H. Loose ◽  
...  
Keyword(s):  
Dna Barcoding ◽  
Threatened Species ◽  
Southern Brazil

scholarly journals Whole-Genome Sequence of Streptococcus agalactiae Strain S13, Isolated from a Fish Eye from a Nile Tilapia Farm in Southern Brazil

2017 ◽  
Vol 5 (35) ◽  
Author(s):  
César T. Facimoto ◽  
Roberta T. Chideroli ◽  
Daniela D. Gonçalves ◽  
Anderson O. do Carmo ◽  
Evanguedes Kalaphotakis ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Streptococcus Agalactiae ◽  
Nile Tilapia ◽  
Mortality Rates ◽  
Whole Genome Sequence ◽  
Economic Losses ◽  
Southern Brazil ◽  
Fish Farms ◽  
Content Type ◽  
Fish Eye

ABSTRACT Streptococcus agalactiae is an important pathogen to world aquaculture due to its high mortality rates in fish farms and consequent economic losses. Our study presents the complete genome sequence of strain S13, isolated from a tilapia farm outbreak in southern Brazil.

scholarly journals Molecular-genetic testing of freshwater species and breeds of animals (fish, narrow-clawed crayfish, mollusks)

2018 ◽  
Vol 22 ◽  
pp. 126-131
Author(s):  
S. E. Dromashko ◽  
A. M. Slukvin ◽  
O. Yu. Koneva ◽  
A. A. Rouba ◽  
M. A. Sasinovich ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Dna Barcoding ◽  
Molecular Genetic ◽  
Molecular Genetic Analysis ◽  
Freshwater Species ◽  
Fish Farms ◽  
Genetic Studies ◽  
Sturgeon Species ◽  
Species Population ◽  
Mollusk Species

Aim. Description of the results of molecular genetic studies of a number of fish, narrow-clawed crayfish, and mollusk species. Methods. For the analysis, RAPD, SSR, and DNA-barcoding methods were used. Results. Unique RAPD amplicones were identified to differentiate Lahvinsky, Tremlyansky and Isobelinsky carp breeds. With the use of SSR markers, the Dniester-Dnieper and Kama population belonging to the sterlet, grown in two farms of Belarus, was established. An instruction on the application of molecular genetic analysis to establish the species belonging to meat and caviar of sturgeon species was developed. The species composition and genetic polymorphism in narrow-clawed crayfish in reservoirs of Brest and Gomel regions was estimated. The work on DNA-barcoding of mollusks has begun. Conclusions. Molecular-genetic passports of carp breeds of Belarusian breeding are compiled. The population belonging to sterlet is determined in two fish farms inBelarus. Instruction for the use of molecular genetic analysis to establish the species (population) belonging to the sturgeon fish and their products is introduced in the country and used for testing and certification of sturgeon products. For the Byelorussian Polesie region, it is established that the narrow-clawed crayfish in theGomel region reservoirs has the greatest genetic diversity. Keywords: molecular markers, carp, sturgeon, narrow-clawed crayfish, mollusks.

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